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        <channel>
                <title>Petter Reinholdtsen - Entries tagged english</title>
                <description>Entries tagged english</description>
                <link>http://people.skolelinux.org/pere/blog/</link>

        
        <item>
                <title>Nikita version 0.4 released - free software archive API server</title>
                <link>http://people.skolelinux.org/pere/blog/Nikita_version_0_4_released___free_software_archive_API_server.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Nikita_version_0_4_released___free_software_archive_API_server.html</guid>
                <pubDate>Wed, 22 May 2019 11:30:00 +0200</pubDate>
                <description>&lt;p&gt;This morning,  a new release of 
&lt;a href=&quot;https://gitlab.com/OsloMet-ABI/nikita-noark5-core/&quot;&gt;Nikita
Noark 5 core project&lt;/a&gt; was
&lt;a href=&quot;https://lists.nuug.no/pipermail/nikita-noark/2019-May/000468.html&quot;&gt;announced
on the project mailing list&lt;/a&gt;.  The Nikita free software solution is
an implementation of the Norwegian archive standard Noark 5 used by
government offices in Norway.  These were the changes in version 0.4
since version 0.3, see the email link above for links to a demo site:&lt;/p&gt;

&lt;ul&gt;

  &lt;li&gt;Roll out OData handling to all endpoints where applicable&lt;/li&gt;
  &lt;li&gt;Changed the relation key for &quot;ny-journalpost&quot; to the official one.&lt;/li&gt;
  &lt;li&gt;Better link generation on outgoing links.&lt;/li&gt;
  &lt;li&gt;Tidy up code and make code and approaches more consistent throughout
   the codebase&lt;/li&gt;
  &lt;li&gt;Update rels to be in compliance with updated version in the
   interface standard&lt;/li&gt;
  &lt;li&gt;Avoid printing links on empty objects as they can&#39;t have links&lt;/li&gt;
  &lt;li&gt;Small bug fixes and improvements&lt;/li&gt;
  &lt;li&gt;Start moving generation of outgoing links to @Service layer so access
   control can be used when generating links&lt;/li&gt;
  &lt;li&gt;Log exception that was being swallowed so it&#39;s traceable&lt;/li&gt;
  &lt;li&gt;Fix name mapping problem&lt;/li&gt;
  &lt;li&gt;Update templated printing so templated should only be printed if it
   is set true. Requires more work to roll out across entire
   application.&lt;/li&gt;
  &lt;li&gt;Remove Record-&gt;DocumentObject as per domain model of n5v4&lt;/li&gt;
  &lt;li&gt;Add ability to delete lists filtered with OData&lt;/li&gt;
  &lt;li&gt;Return NO_CONTENT (204) on delete as per interface standard&lt;/li&gt;
  &lt;li&gt;Introduce support for ConstraintViolationException exception&lt;/li&gt;
  &lt;li&gt;Make Service classes extend NoarkService&lt;/li&gt;
  &lt;li&gt;Make code base respect X-Forwarded-Host, X-Forwarded-Proto and
   X-Forwarded-Port&lt;/li&gt;
  &lt;li&gt;Update CorrespondencePart* code to be more in line with Single
   Responsibility Principle&lt;/li&gt;
  &lt;li&gt;Make package name follow directory structure&lt;/li&gt;
  &lt;li&gt;Make sure Document number starts at 1, not 0&lt;/li&gt;
  &lt;li&gt;Fix isues discovered by FindBugs&lt;/li&gt;
  &lt;li&gt;Update from Date to ZonedDateTime&lt;/li&gt;
  &lt;li&gt;Fix wrong tablename&lt;/li&gt;
  &lt;li&gt;Introduce Service layer tests&lt;/li&gt;
  &lt;li&gt;Improvements to CorrespondencePart&lt;/li&gt;
  &lt;li&gt;Continued work on Class / Classificationsystem&lt;/li&gt;
  &lt;li&gt;Fix feature where authors were stored as storageLocations&lt;/li&gt;
  &lt;li&gt;Update HQL builder for OData&lt;/li&gt;
  &lt;li&gt;Update OData search capability from webpage&lt;/li&gt;
  
&lt;/ul&gt;

&lt;p&gt;If free and open standardized archiving API sound interesting to
you, please contact us on IRC
(&lt;a href=&quot;irc://irc.freenode.net/%23nikita&quot;&gt;#nikita on
irc.freenode.net&lt;/a&gt;) or email
(&lt;a href=&quot;https://lists.nuug.no/mailman/listinfo/nikita-noark&quot;&gt;nikita-noark
mailing list&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>MIME type &quot;text/vnd.sosi&quot; for SOSI map data</title>
                <link>http://people.skolelinux.org/pere/blog/MIME_type__text_vnd_sosi__for_SOSI_map_data.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/MIME_type__text_vnd_sosi__for_SOSI_map_data.html</guid>
                <pubDate>Mon, 20 May 2019 08:35:00 +0200</pubDate>
                <description>&lt;p&gt;As part of my involvement in the work to
&lt;a href=&quot;https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard&quot;&gt;standardise
a REST based API for Noark 5&lt;/a&gt;, the Norwegian archiving standard, I
spent some time the last few months to try to register a
&lt;a href=&quot;https://www.iana.org/assignments/media-types/&quot;&gt;MIME type&lt;/a&gt;
and &lt;a href=&quot;https://www.nationalarchives.gov.uk/PRONOM/&quot;&gt;PRONOM
code&lt;/a&gt; for the SOSI file format.  The background is that there is a
set of formats approved for long term storage and archiving in Norway,
and among these formats, SOSI is the only format missing a MIME type
and PRONOM code.&lt;/p&gt;

&lt;p&gt;What is SOSI, you might ask?  To quote Wikipedia: SOSI is short for
Samordnet Opplegg for Stedfestet Informasjon (literally &quot;Coordinated
Approach for Spatial Information&quot;, but more commonly expanded in
English to Systematic Organization of Spatial Information).  It is a
text based file format for geo-spatial vector information used in
Norway.  Information about the SOSI format can be found in English
from &lt;a href=&quot;https://en.wikipedia.org/wiki/SOSI&quot;&gt;Wikipedia&lt;/a&gt;.  The
specification is available in Norwegian from
&lt;a href=&quot;https://www.kartverket.no/geodataarbeid/Standarder/SOSI/&quot;&gt;the
Norwegian mapping authority&lt;/a&gt;.  The SOSI standard, which originated
in the beginning of nineteen eighties, was the inspiration and formed the
basis for the XML based
&lt;a href=&quot;https://en.wikipedia.org/wiki/Geography_Markup_Language&quot;&gt;Geography
Markup Language&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I have so far written
&lt;a href=&quot;https://github.com/file/file/pull/67&quot;&gt;a pattern matching
rule&lt;/a&gt; for the file(1) unix tool to recognize SOSI files, submitted
a request to the PRONOM project to have a PRONOM ID assigned to the
format (reference TNA1555078202S60), and today send a request to IANA
to register the &quot;text/vnd.sosi&quot; MIME type for this format (referanse
&lt;a href=&quot;https://tools.iana.org/public-view/viewticket/1143144&quot;&gt;IANA
#1143144&lt;/a&gt;).  If all goes well, in a few months, anyone implementing
the Noark 5 Tjenestegrensesnitt API spesification should be able to
use an official MIME type and PRONOM code for SOSI files.  In
addition, anyone using SOSI files on Linux should be able to
automatically recognise the format and web sites handing out SOSI
files can begin providing a more specific MIME type.  So far, SOSI
files has been handed out from web sites using the
&quot;application/octet-stream&quot; MIME type, which is just a nice way of
stating &quot;I do not know&quot;.  Soon, we will know. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>PlantUML for text based UML diagram modelling - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/PlantUML_for_text_based_UML_diagram_modelling___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/PlantUML_for_text_based_UML_diagram_modelling___nice_free_software.html</guid>
                <pubDate>Mon, 25 Mar 2019 09:35:00 +0100</pubDate>
                <description>&lt;p&gt;As part of my involvement with the
&lt;a href=&quot;https://gitlab.com/OsloMet-ABI/nikita-noark5-core/&quot;&gt;Nikita
Noark 5 core project&lt;/a&gt;, I have been proposing improvements to the
API specification created by &lt;a href=&quot;https://www.arkivverket.no/&quot;&gt;The
National Archives of Norway&lt;/a&gt; and helped migrating the text from a
version control system unfriendly binary format (docx) to Markdown in
git.  Combined with the migration to a public git repository (on
github), this has made it possible for anyone to suggest improvement
to the text.&lt;/p&gt;

&lt;p&gt;The specification is filled with UML diagrams.  I believe the
original diagrams were modelled using Sparx Systems Enterprise
Architect, and exported as EMF files for import into docx.  This
approach make it very hard to track changes using a version control
system.  To improve the situation I have been looking for a good text
based UML format with associated command line free software tools on
Linux and Windows, to allow anyone to send in corrections to the UML
diagrams in the specification.  The tool must be text based to work
with git, and command line to be able to run it automatically to
generate the diagram images.  Finally, it must be free software to
allow anyone, even those that can not accept a non-free software
license, to contribute.&lt;/p&gt;

&lt;p&gt;I did not know much about free software UML modelling tools when I
started.  I have used dia and inkscape for simple modelling in the
past, but neither are available on Windows, as far as I could tell.  I
came across a nice
&lt;a href=&quot;https://modeling-languages.com/text-uml-tools-complete-list/&quot;&gt;list
of text mode uml tools&lt;/a&gt;, and tested out a few of the tools listed
there.  &lt;a href=&quot;http://plantuml.com/&quot;&gt;The PlantUML tool&lt;/a&gt; seemed
most promising.  After verifying that the packages
&lt;a href=&quot;https://tracker.debian.org/pkg/plantuml&quot;&gt;is available in
Debian&lt;/a&gt; and found &lt;a href=&quot;https://github.com/plantuml/plantuml&quot;&gt;its
Java source&lt;/a&gt; under a GPL license on github, I set out to test if it
could represent the diagrams we needed, ie the ones currently in
&lt;a href=&quot;https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/&quot;&gt;the
Noark 5 Tjenestegrensesnitt specification&lt;/a&gt;.  I am happy to report
that it could represent them, even thought it have a few warts here
and there.&lt;/p&gt;

&lt;p&gt;After a few days of modelling I completed the task this weekend.  A
temporary link to the complete set of diagrams (original and from
PlantUML) is available in
&lt;a href=&quot;https://github.com/arkivverket/noark5-tjenestegrensesnitt-standard/issues/76&quot;&gt;the
github issue discussing the need for a text based UML format&lt;/a&gt;, but
please note I lack a sensible tool to convert EMF files to PNGs, so
the &quot;original&quot; rendering is not as good as the original was in the
publised PDF.&lt;/p&gt;

&lt;p&gt;Here is an example UML diagram, showing the core classes for
keeping metadata about archived documents:&lt;/p&gt;

&lt;pre&gt;
@startuml
skinparam classAttributeIconSize 0

!include media/uml-class-arkivskaper.iuml
!include media/uml-class-arkiv.iuml
!include media/uml-class-klassifikasjonssystem.iuml
!include media/uml-class-klasse.iuml
!include media/uml-class-arkivdel.iuml
!include media/uml-class-mappe.iuml
!include media/uml-class-merknad.iuml
!include media/uml-class-registrering.iuml
!include media/uml-class-basisregistrering.iuml
!include media/uml-class-dokumentbeskrivelse.iuml
!include media/uml-class-dokumentobjekt.iuml
!include media/uml-class-konvertering.iuml
!include media/uml-datatype-elektronisksignatur.iuml

Arkivstruktur.Arkivskaper &quot;+arkivskaper 1..*&quot; &lt;-o &quot;+arkiv 0..*&quot; Arkivstruktur.Arkiv
Arkivstruktur.Arkiv o--&gt; &quot;+underarkiv 0..*&quot; Arkivstruktur.Arkiv
Arkivstruktur.Arkiv &quot;+arkiv 1&quot; o--&gt; &quot;+arkivdel 0..*&quot; Arkivstruktur.Arkivdel
Arkivstruktur.Klassifikasjonssystem &quot;+klassifikasjonssystem [0..1]&quot; &lt;--o &quot;+arkivdel 1..*&quot; Arkivstruktur.Arkivdel
Arkivstruktur.Klassifikasjonssystem &quot;+klassifikasjonssystem [0..1]&quot; o--&gt; &quot;+klasse 0..*&quot; Arkivstruktur.Klasse
Arkivstruktur.Arkivdel &quot;+arkivdel 0..1&quot; o--&gt; &quot;+mappe 0..*&quot; Arkivstruktur.Mappe
Arkivstruktur.Arkivdel &quot;+arkivdel 0..1&quot; o--&gt; &quot;+registrering 0..*&quot; Arkivstruktur.Registrering
Arkivstruktur.Klasse &quot;+klasse 0..1&quot; o--&gt; &quot;+mappe 0..*&quot; Arkivstruktur.Mappe
Arkivstruktur.Klasse &quot;+klasse 0..1&quot; o--&gt; &quot;+registrering 0..*&quot; Arkivstruktur.Registrering
Arkivstruktur.Mappe --&gt; &quot;+undermappe 0..*&quot; Arkivstruktur.Mappe
Arkivstruktur.Mappe &quot;+mappe 0..1&quot; o--&gt; &quot;+registrering 0..*&quot; Arkivstruktur.Registrering
Arkivstruktur.Merknad &quot;+merknad 0..*&quot; &lt;--* Arkivstruktur.Mappe
Arkivstruktur.Merknad &quot;+merknad 0..*&quot; &lt;--* Arkivstruktur.Dokumentbeskrivelse
Arkivstruktur.Basisregistrering -|&gt; Arkivstruktur.Registrering
Arkivstruktur.Merknad &quot;+merknad 0..*&quot; &lt;--* Arkivstruktur.Basisregistrering
Arkivstruktur.Registrering &quot;+registrering 1..*&quot; o--&gt; &quot;+dokumentbeskrivelse 0..*&quot; Arkivstruktur.Dokumentbeskrivelse
Arkivstruktur.Dokumentbeskrivelse &quot;+dokumentbeskrivelse 1&quot; o-&gt; &quot;+dokumentobjekt 0..*&quot; Arkivstruktur.Dokumentobjekt
Arkivstruktur.Dokumentobjekt *-&gt; &quot;+konvertering 0..*&quot; Arkivstruktur.Konvertering
Arkivstruktur.ElektroniskSignatur -[hidden]-&gt; Arkivstruktur.Dokumentobjekt
@enduml
&lt;/pre&gt;

&lt;p&gt;&lt;a href=&quot;http://plantuml.com/class-diagram&quot;&gt;The format&lt;/a&gt; is quite
compact, with little redundant information.  The text expresses
entities and relations, and there is little layout related fluff.  One
can reuse content by using include files, allowing for consistent
naming across several diagrams.  The include files can be standalone
PlantUML too.  Here is the content of
&lt;tt&gt;media/uml-class-arkivskaper.iuml&lt;tt&gt;:&lt;/p&gt;

&lt;pre&gt;
@startuml
class Arkivstruktur.Arkivskaper &lt;Arkivenhet&gt; {
  +arkivskaperID : string
  +arkivskaperNavn : string
  +beskrivelse : string [0..1]
}
@enduml
&lt;/pre&gt;

&lt;p&gt;This is what the complete diagram for the PlantUML notation above
look like:&lt;/p&gt;

&lt;p&gt;&lt;img width=&quot;80%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2019-03-25-noark5-plantuml-diagrameksempel.png&quot;&gt;&lt;/p&gt;

&lt;p&gt;A cool feature of PlantUML is that the generated PNG files include
the entire original source diagram as text.  The source (with include
statements expanded) can be extracted using for example
&lt;tt&gt;exiftool&lt;/tt&gt;.  Another cool feature is that parts of the entities
can be hidden after inclusion.  This allow to use include files with
all attributes listed, even for UML diagrams that should not list any
attributes.&lt;/p&gt;

&lt;p&gt;The diagram also show some of the warts.  Some times the layout
engine place text labels on top of each other, and some times it place
the class boxes too close to each other, not leaving room for the
labels on the relationship arrows.  The former can be worked around by
placing extra newlines in the labes (ie &quot;\n&quot;).  I did not do it here
to be able to demonstrate the issue.  I have not found a good way
around the latter, so I normally try to reduce the problem by changing
from vertical to horizontal links to improve the layout.&lt;/p&gt;

&lt;p&gt;All in all, I am quite happy with PlantUML, and very impressed with
how quickly its lead developer responds to questions.  So far I got an
answer to my questions in a few hours when I send an email.  I
definitely recommend looking at PlantUML if you need to make UML
diagrams.  Note, PlantUML can draw a lot more than class relations.
Check out the documention for a complete list. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Release 0.3 of free software archive API system Nikita announced</title>
                <link>http://people.skolelinux.org/pere/blog/Release_0_3_of_free_software_archive_API_system_Nikita_announced.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Release_0_3_of_free_software_archive_API_system_Nikita_announced.html</guid>
                <pubDate>Sun, 24 Mar 2019 14:30:00 +0100</pubDate>
                <description>&lt;p&gt;Yesterday,  a new release of 
&lt;a href=&quot;https://gitlab.com/OsloMet-ABI/nikita-noark5-core/&quot;&gt;Nikita
Noark 5 core project&lt;/a&gt; was
&lt;a href=&quot;https://lists.nuug.no/pipermail/nikita-noark/2019-March/000451.html&quot;&gt;announced
on the project mailing list&lt;/a&gt;.  The free software solution is an
implementation of the Norwegian archive standard Noark 5 used by
government offices in Norway.  These were the changes in version 0.3
since version 0.2.1 (from NEWS.md):&lt;/p&gt;

&lt;ul&gt;
  &lt;li&gt;Improved ClassificationSystem and Class behaviour.&lt;/li&gt;
  &lt;li&gt;Tidied up known inconsistencies between domain model and hateaos links.&lt;/li&gt;
  &lt;li&gt;Added experimental code for blockchain integration.  &lt;/li&gt;
  &lt;li&gt;Make token expiry time configurable at upstart from properties file.&lt;/li&gt;
  &lt;li&gt;Continued work on OData search syntax.&lt;/li&gt;
  &lt;li&gt;Started work on pagination for entities, partly implemented for Saksmappe.&lt;/li&gt;
  &lt;li&gt;Finalise ClassifiedCode Metadata entity.&lt;/li&gt;
  &lt;li&gt;Implement mechanism to check if authentication token is still
   valid.  This allow the GUI to return a more sensible message to the
   user if the token is expired.&lt;/li&gt;
  &lt;li&gt;Reintroduce browse.html page to allow user to browse JSON API using
   hateoas links.&lt;/li&gt;
  &lt;li&gt;Fix bug in handling file/mappe sequence number.  Year change was
   not properly handled.&lt;/li&gt;
  &lt;li&gt;Update application yml files to be in sync with current development.&lt;/li&gt;
  &lt;li&gt;Stop &#39;converting&#39; everything to PDF using libreoffice.  Only
   convert the file formats doc, ppt, xls, docx, pptx, xlsx, odt, odp
   and ods.&lt;/li&gt;
  &lt;li&gt;Continued code style fixing, making code more readable.&lt;/li&gt;
  &lt;li&gt;Minor bug fixes.&lt;/li&gt;
  
&lt;/ul&gt;

&lt;p&gt;If free and open standardized archiving API sound interesting to
you, please contact us on IRC
(&lt;a href=&quot;irc://irc.freenode.net/%23nikita&quot;&gt;#nikita on
irc.freenode.net&lt;/a&gt;) or email
(&lt;a href=&quot;https://lists.nuug.no/mailman/listinfo/nikita-noark&quot;&gt;nikita-noark
mailing list&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Websocket from Kraken in Valutakrambod</title>
                <link>http://people.skolelinux.org/pere/blog/Websocket_from_Kraken_in_Valutakrambod.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Websocket_from_Kraken_in_Valutakrambod.html</guid>
                <pubDate>Fri, 1 Feb 2019 22:25:00 +0100</pubDate>
                <description>&lt;p&gt;Yesterday, the Kraken virtual currency exchange announced
&lt;a href=&quot;https://blog.kraken.com/post/2019/websockets-public-api-launching-soon/&quot;&gt;their
Websocket service&lt;/a&gt;, providing a stream of exchange updates to its
clients.  Getting updated rates quickly is a good idea, so I used
their &lt;a href=&quot;https://www.kraken.com/en-us/help/websocket-api&quot;&gt;API
documentation&lt;/a&gt; and added Websocket support to the Kraken service in
Valutakrambod today.  The python library can now get updates
from Kraken several times per second, instead of every time the
information is polled from the REST API.&lt;/p&gt;

&lt;p&gt;If this sound interesting to you, the code for valutakrambod is
available from
&lt;a href=&quot;http://github.com/petterreinholdtsen/valutakrambod&quot;&gt;github&lt;/a&gt;.
Here is example output from the example client displaying rates in a
curses view:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
           Name Pair   Bid         Ask         Spr    Ftcd    Age
 BitcoinsNorway BTCEUR   2959.2800   3021.0500   2.0%   36    nan    nan
       Bitfinex BTCEUR   3087.9000   3088.0000   0.0%   36     37    nan
        Bitmynt BTCEUR   3001.8700   3135.4600   4.3%   36     52    nan
         Bitpay BTCEUR   3003.8659         nan   nan%   35    nan    nan
       Bitstamp BTCEUR   3008.0000   3010.2300   0.1%    0      1      1
           Bl3p BTCEUR   3000.6700   3010.9300   0.3%    1    nan    nan
       Coinbase BTCEUR   2992.1800   3023.2500   1.0%   34    nan    nan
         Kraken+BTCEUR   3005.7000   3006.6000   0.0%    0      1      0
        Paymium BTCEUR   2940.0100   2993.4400   1.8%    0   2688    nan
 BitcoinsNorway BTCNOK  29000.0000  29360.7400   1.2%   36    nan    nan
        Bitmynt BTCNOK  29115.6400  29720.7500   2.0%   36     52    nan
         Bitpay BTCNOK  29029.2512         nan   nan%   36    nan    nan
       Coinbase BTCNOK  28927.6000  29218.5900   1.0%   35    nan    nan
        MiraiEx BTCNOK  29097.7000  29741.4200   2.2%   36    nan    nan
 BitcoinsNorway BTCUSD   3385.4200   3456.0900   2.0%   36    nan    nan
       Bitfinex BTCUSD   3538.5000   3538.6000   0.0%   36     45    nan
         Bitpay BTCUSD   3443.4600         nan   nan%   34    nan    nan
       Bitstamp BTCUSD   3443.0100   3445.0500   0.1%    0      2      1
       Coinbase BTCUSD   3428.1600   3462.6300   1.0%   33    nan    nan
         Gemini BTCUSD   3445.8800   3445.8900   0.0%   36    326    nan
         Hitbtc BTCUSD   3473.4700   3473.0700  -0.0%    0      0      0
         Kraken+BTCUSD   3444.4000   3445.6000   0.0%    0      1      0
  Exchangerates EURNOK      9.6685      9.6685   0.0%   36  22226    nan
     Norgesbank EURNOK      9.6685      9.6685   0.0%   36  22226    nan
       Bitstamp EURUSD      1.1440      1.1462   0.2%    0      1      2
  Exchangerates EURUSD      1.1471      1.1471   0.0%   36  22226    nan
 BitcoinsNorway LTCEUR      1.0009     22.6538  95.6%   35    nan    nan
 BitcoinsNorway LTCNOK    259.0900    264.9300   2.2%   35    nan    nan
 BitcoinsNorway LTCUSD      0.0000     29.0000 100.0%   35    nan    nan
     Norgesbank USDNOK      8.4286      8.4286   0.0%   36  22226    nan
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Yes, I notice the strange negative spread on Hitbtc.  I&#39;ve seen the
same on Kraken.  Another strange observation is that Kraken some times
announce trade orders a fraction of a second in the future.  I really
wonder what is going on there.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian now got everything you need to program Micro:bit</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_now_got_everything_you_need_to_program_Micro_bit.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_now_got_everything_you_need_to_program_Micro_bit.html</guid>
                <pubDate>Tue, 22 Jan 2019 17:20:00 +0100</pubDate>
                <description>&lt;p&gt;I am amazed and very pleased to discover that since a few days ago,
everything you need to program the &lt;a href=&quot;https://microbit.org/&quot;&gt;BBC
micro:bit&lt;/a&gt; is available from the Debian archive.  All this is
thanks to the hard work of Nick Morrott and the Debian python
packaging team.  The micro:bit project recommend the mu-editor to
program the microcomputer, as this editor will take care of all the
machinery required to injekt/flash micropython alongside the program
into the micro:bit, as long as the pieces are available.&lt;/p&gt;

&lt;p&gt;There are three main pieces involved.  The first to enter Debian
was
&lt;a href=&quot;https://tracker.debian.org/pkg/python-uflash&quot;&gt;python-uflash&lt;/a&gt;,
which was accepted into the archive 2019-01-12.  The next one was
&lt;a href=&quot;https://tracker.debian.org/pkg/mu-editor&quot;&gt;mu-editor&lt;/a&gt;, which
showed up 2019-01-13.  The final and hardest part to to into the
archive was
&lt;a href=&quot;https://tracker.debian.org/pkg/firmware-microbit-micropython&quot;&gt;firmware-microbit-micropython&lt;/a&gt;,
which needed to get its build system and dependencies into Debian
before it was accepted 2019-01-20.  The last one is already in Debian
Unstable and should enter Debian Testing / Buster in three days.  This
all allow any user of the micro:bit to get going by simply running
&#39;apt install mu-editor&#39; when using Testing or Unstable, and once
Buster is released as stable, all the users of Debian stable will be
catered for.&lt;/p&gt;

&lt;p&gt;As a minor final touch, I added rules to
&lt;a href=&quot;https://tracker.debian.org/pkg/isenkram&quot;&gt;the isenkram
package&lt;/a&gt; for recognizing micro:bit and recommend the mu-editor
package.  This make sure any user of the isenkram desktop daemon will
get a popup suggesting to install mu-editor then the USB cable from
the micro:bit is inserted for the first time.&lt;/p&gt;

&lt;p&gt;This should make it easier to have fun.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>CasparCG Server for TV broadcast playout in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/CasparCG_Server_for_TV_broadcast_playout_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/CasparCG_Server_for_TV_broadcast_playout_in_Debian.html</guid>
                <pubDate>Tue, 15 Jan 2019 00:10:00 +0100</pubDate>
                <description>&lt;p&gt;The layered video playout server created by Sveriges Television,
&lt;a href=&quot;https://casparcg.com/&quot;&gt;CasparCG Server&lt;/a&gt;, entered Debian
today.  This completes many months of work to get the source ready to
go into Debian.  The first upload to the Debian NEW queue happened a
month ago, but the work upstream to prepare it for Debian started more
than two and a half month ago.  So far
&lt;a href=&quot;https://tracker.debian.org/pkg/casparcg-server&quot;&gt;the
casparcg-server package&lt;/a&gt; is only available for amd64, but I hope
this can be improved.  The package is in contrib because it depend on
the &lt;a href=&quot;https://tracker.debian.org/pkg/fdk-aac&quot;&gt;non-free fdk-aac
library&lt;/a&gt;.  The Debian package lack support for streaming web pages
because Debian is missing CEF, Chromium Embedded Framework.  CEF is
wanted by several packages in Debian.  But because the Chromium source
is &lt;a href=&quot;https://bugs.debian.org/893448&quot;&gt;not available as a build
dependency&lt;/a&gt;, it is not yet possible to upload CEF to Debian.  I
hope this will change in the future.&lt;/p&gt;

&lt;p&gt;The reason I got involved is that
&lt;a href=&quot;https://frikanalen.no/&quot;&gt;the Norwegian open channel
Frikanalen&lt;/a&gt; is starting to use CasparCG for our HD playout, and I
would like to have all the free software tools we use to run the TV
channel available as packages from the Debian project.  The last
remaining piece in the puzzle is Open Broadcast Encoder, but it depend
on quite a lot of patched libraries which would have to be included in
Debian first.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Learn to program with Minetest on Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Learn_to_program_with_Minetest_on_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Learn_to_program_with_Minetest_on_Debian.html</guid>
                <pubDate>Sat, 15 Dec 2018 15:30:00 +0100</pubDate>
                <description>&lt;p&gt;A fun way to learn how to program
&lt;a href=&quot;https://www.python.org/&quot;&gt;Python&lt;/a&gt; is to follow the
instructions in the book
&quot;&lt;a href=&quot;https://nostarch.com/programwithminecraft&quot;&gt;Learn to program
with Minecraft&lt;/a&gt;&quot;, which introduces programming in Python to people
who like to play with Minecraft.  The book uses a Python library to
talk to a TCP/IP socket with an API accepting build instructions and
providing information about the current players in a Minecraft world.
The TCP/IP API was first created for the Minecraft implementation for
Raspberry Pi, and has since been ported to some server versions of
Minecraft.  The book contain recipes for those using Windows, MacOSX
and Raspian.  But a little known fact is that you can follow the same
recipes using the free software construction game
&lt;a href=&quot;https://minetest.net/&quot;&gt;Minetest&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;There is &lt;a href=&quot;https://github.com/sprintingkiwi/pycraft_mod&quot;&gt;a
Minetest module implementing the same API&lt;/a&gt;, making it possible to
use the Python programs coded to talk to Minecraft with Minetest too.
I
&lt;a href=&quot;https://ftp-master.debian.org/new/minetest-mod-pycraft_0.20%2Bgit20180331.0376a0a%2Bdfsg-1.html&quot;&gt;uploaded
this module&lt;/a&gt; to Debian two weeks ago, and as soon as it clears the
FTP masters NEW queue, learning to program Python with Minetest on
Debian will be a simple &#39;apt install&#39; away.  The Debian package is
maintained as part of the Debian Games team, and
&lt;a href=&quot;https://salsa.debian.org/games-team/unfinished/minetest-mod-pycraft&quot;&gt;the
packaging rules&lt;/a&gt; are currently located under &#39;unfinished&#39; on
Salsa.&lt;/p&gt;

&lt;p&gt;You will most likely need to install several of the Minetest
modules in Debian for the examples included with the library to work
well, as there are several blocks used by the example scripts that are
provided via modules in Minetest.  Without the required blocks, a
simple stone block is used instead.  My initial testing with a analog
clock did not get gold arms as instructed in the python library, but
instead used stone arms.&lt;/p&gt;

&lt;p&gt;I tried to find a way to add the API to the desktop version of
Minecraft, but were unable to find any working recipes.  The
&lt;a href=&quot;https://www.epiphanydigest.com/tag/minecraft-python-api/&quot;&gt;recipes&lt;/a&gt;
I &lt;a href=&quot;https://github.com/kbsriram/mcpiapi&quot;&gt;found&lt;/a&gt; are only
working with a standalone Minecraft server setup.  Are there any
options to use with the normal desktop version?&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Non-blocking bittorrent plugin for vlc</title>
                <link>http://people.skolelinux.org/pere/blog/Non_blocking_bittorrent_plugin_for_vlc.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Non_blocking_bittorrent_plugin_for_vlc.html</guid>
                <pubDate>Wed, 12 Dec 2018 07:20:00 +0100</pubDate>
                <description>&lt;p&gt;A few hours ago, a new and improved version (2.4) of
&lt;a href=&quot;https://tracker.debian.org/pkg/vlc-plugin-bittorrent&quot;&gt;the VLC
bittorrent plugin&lt;/a&gt; was uploaded to Debian.  This new version
include a complete rewrite of the bittorrent related code, which seem
to make the plugin non-blocking.  This mean you can actually exit VLC
even when the plugin seem to be unable to get the bittorrent streaming
started.  The new version also include support for filtering playlist
by file extension using command line options, if you want to avoid
processing audio, video or images.  The package is currently in Debian
unstable, but should be available in Debian testing in two days.  To
test it, simply install it like this:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
apt install vlc-plugin-bittorrent
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;After it is installed, you can try to use it to play a file
downloaded live via bittorrent like this:

&lt;p&gt;&lt;pre&gt;
vlc https://archive.org/download/Glass_201703/Glass_201703_archive.torrent
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Why is your site not using Content Security Policy / CSP?</title>
                <link>http://people.skolelinux.org/pere/blog/Why_is_your_site_not_using_Content_Security_Policy___CSP_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Why_is_your_site_not_using_Content_Security_Policy___CSP_.html</guid>
                <pubDate>Sun, 9 Dec 2018 15:00:00 +0100</pubDate>
                <description>&lt;p&gt;Yesterday, I had the pleasure of watching on Frikanalen the OWASP
talk by Scott Helme titled
&quot;&lt;a href=&quot;https://frikanalen.no/video/626080/&quot;&gt;What We’ve Learned From
Billions of Security Reports&lt;/a&gt;&quot;.  I had not heard of the
&lt;a href=&quot;https://en.wikipedia.org/wiki/Content_Security_Policy&quot;&gt;Content
Security Policy standard&lt;/a&gt; nor its ability to &quot;call home&quot; when a
browser detect a policy breach (I do not follow web page design
development much these days), and found the talk very illuminating.&lt;/p&gt;

&lt;p&gt;The mechanism allow a web site owner to use HTTP headers to tell
visitors web browser which sources (internal and external) are allowed to
be used on the web site.  Thus it become possible to enforce a &quot;only
local content&quot; policy despite web designers urge to fetch programs
from random sites on the Internet, like the one
&lt;a href=&quot;https://securityaffairs.co/wordpress/68966/hacking/browsealoud-plugin-hack.html&quot;&gt;enabling
the attack&lt;/a&gt; reported by Scott Helme earlier this year.&lt;/p&gt;

&lt;p&gt;Using CSP seem like an obvious thing for a site admin to implement
to take some control over the information leak that occur when
external sources are used to render web pages, it is a mystery more
sites are not using CSP?  It is being
&lt;a href=&quot;https://www.w3.org/TR/CSP/&quot;&gt;standardized under W3C&lt;/a&gt; these
days, and is supposed by most web browsers&lt;/p&gt;

&lt;p&gt;I managed to find &lt;a href=&quot;https://github.com/mozilla/django-csp&quot;&gt;a
Django middleware for implementing CSP&lt;/a&gt; and was happy to discover
it was already in Debian.  I plan to use it to add CSP support to the
Frikanalen web site soon.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>New and improved Frikanalen Kodi addon version 0.0.3</title>
                <link>http://people.skolelinux.org/pere/blog/New_and_improved_Frikanalen_Kodi_addon_version_0_0_3.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/New_and_improved_Frikanalen_Kodi_addon_version_0_0_3.html</guid>
                <pubDate>Thu, 8 Nov 2018 10:30:00 +0100</pubDate>
                <description>&lt;p&gt;If you read my blog regularly, you probably know I am involved in
running and developing the &lt;a href=&quot;https://frikanalen.no/&quot;&gt;Norwegian
TV channel Frikanalen&lt;/a&gt;.  It is an open channel, allowing everyone
in Norway to publish videos on a TV channel with national coverage.
You can think of it as Youtube for national television.
In addition to distribution on RiksTV and Uninett, Frikanalen is also
available as a Kodi addon.  The last few days I have updated the code
to add more features.  A
&lt;a href=&quot;https://kodi.tv/addon/plugins-video-add-ons/frikanalen-nett-tv&quot;&gt;new
and improved version 0.0.3 Frikanalen addon&lt;/a&gt; was just made
available via the Kodi repositories.  This new version include a
option to browse videos by category, as well as free text search
in the video archive.  It will now also show the video duration in the
video lists, which were missing earlier.  A new and experimental
link to the HD video stream currently being worked on is provided, for
those that want to see what the &lt;a href=&quot;https://casparcg.com/&quot;&gt;CasparCG&lt;/a&gt;
output look like.  The alternative is the SD video stream, generated
using MLT.  CasparCG is controlled by our
&lt;a href=&quot;https://github.com/Frikanalen/mltplayout/&quot;&gt;mltplayout
server&lt;/a&gt; which instead of talking to mlt is giving PLAY instructions
to the CasparCG server when it is time to start a new program.&lt;/p&gt;

&lt;p&gt;By now, you are probably wondering what kind of content is being
played on the channel.  These days, it is filled with technical
presentations like those from &lt;a href=&quot;https://www.nuug.no/&quot;&gt;NUUG&lt;/a&gt;,
&lt;a href=&quot;https://www.debconf.org/&quot;&gt;Debconf&lt;/a&gt;, Makercon, and TED,
but there are also some periods with
&lt;a href=&quot;https://www.empo.no/&quot;&gt;EMPT TV&lt;/a&gt; and
&lt;a href=&quot;https://www.p7.no/&quot;&gt;P7&lt;/a&gt;.

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Time for an official MIME type for patches?</title>
                <link>http://people.skolelinux.org/pere/blog/Time_for_an_official_MIME_type_for_patches_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Time_for_an_official_MIME_type_for_patches_.html</guid>
                <pubDate>Thu, 1 Nov 2018 08:15:00 +0100</pubDate>
                <description>&lt;p&gt;As part of my involvement in
&lt;a href=&quot;https://gitlab.com/OsloMet-ABI/nikita-noark5-core&quot;&gt;the Nikita
archive API project&lt;/a&gt;, I&#39;ve been importing a fairly large lump of
emails into a test instance of the archive to see how well this would
go.  I picked a subset of &lt;a href=&quot;https://notmuchmail.org/&quot;&gt;my
notmuch email database&lt;/a&gt;, all public emails sent to me via
@lists.debian.org, giving me a set of around 216 000 emails to import.
In the process, I had a look at the various attachments included in
these emails, to figure out what to do with attachments, and noticed
that one of the most common attachment formats do not have
&lt;a href=&quot;https://www.iana.org/assignments/media-types/media-types.xhtml&quot;&gt;an
official MIME type&lt;/a&gt; registered with IANA/IETF.  The output from
diff, ie the input for patch, is on the top 10 list of formats
included in these emails.  At the moment people seem to use either
text/x-patch or text/x-diff, but neither is officially registered.  It
would be better if one official MIME type were registered and used
everywhere.&lt;/p&gt;

&lt;p&gt;To try to get one official MIME type for these files, I&#39;ve brought
up the topic on
&lt;a href=&quot;https://www.ietf.org/mailman/listinfo/media-types&quot;&gt;the
media-types mailing list&lt;/a&gt;.  If you are interested in discussion
which MIME type to use as the official for patch files, or involved in
making software using a MIME type for patches, perhaps you would like
to join the discussion?&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Measuring the speaker frequency response using the AUDMES free software GUI - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/Measuring_the_speaker_frequency_response_using_the_AUDMES_free_software_GUI___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Measuring_the_speaker_frequency_response_using_the_AUDMES_free_software_GUI___nice_free_software.html</guid>
                <pubDate>Mon, 22 Oct 2018 08:40:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2018-10-22-audmes-measure-speakers.png&quot; align=&quot;right&quot; width=&quot;40%&quot;/&gt;&lt;/p&gt;

&lt;p&gt;My current home stereo is a patchwork of various pieces I got on
flee markeds over the years.  It is amazing what kind of equipment
show up there.  I&#39;ve been wondering for a while if it was possible to
measure how well this equipment is working together, and decided to
see how far I could get using free software.  After trawling the web I
came across an article from DIY Audio and Video on
&lt;a href=&quot;https://www.diyaudioandvideo.com/Tutorial/SpeakerResponseTesting/&quot;&gt;Speaker
Testing and Analysis&lt;/a&gt; describing how to test speakers, and it listing
several software options, among them
&lt;a href=&quot;https://sourceforge.net/projects/audmes/&quot;&gt;AUDio MEasurement
System (AUDMES)&lt;/a&gt;.  It is the only free software system I could find
focusing on measuring speakers and audio frequency response.  In the
process I also found an interesting article from NOVO on
&lt;a href=&quot;http://novo.press/understanding-speaker-specifications-and-frequency-response/&quot;&gt;Understanding
Speaker Specifications and Frequency Response&lt;/a&gt; and an article from
ecoustics on
&lt;a href=&quot;https://www.ecoustics.com/articles/understanding-speaker-frequency-response/&quot;&gt;Understanding
Speaker Frequency Response&lt;/a&gt;, with a lot of information on what to
look for and how to interpret the graphs.  Armed with this knowledge,
I set out to measure the state of my speakers.&lt;/p&gt;

&lt;p&gt;The first hurdle was that AUDMES hadn&#39;t seen a commit for 10 years
and did not build with current compilers and libraries.  I got in
touch with its author, who no longer was spending time on the program
but gave me write access to the subversion repository on Sourceforge.
The end result is that now the code build on Linux and is capable of
saving and loading the collected frequency response data in CSV
format.  The application is quite nice and flexible, and I was able to
select the input and output audio interfaces independently.  This made
it possible to use a USB mixer as the input source, while sending
output via my laptop headphone connection.  I lacked the hardware and
cabling to figure out a different way to get independent cabling to
speakers and microphone.&lt;/p&gt;

&lt;p&gt;Using this setup I could see how a large range of high frequencies
apparently were not making it out of my speakers.  The picture show
the frequency response measurement of one of the speakers.  Note the
frequency lines seem to be slightly misaligned, compared to the CSV
output from the program.  I can not hear several of these are high
frequencies, according to measurement from
&lt;a href=&quot;http://freehearingtestsoftware.com&quot;&gt;Free Hearing Test
Software&lt;/a&gt;, an freeware system to measure your hearing (still
looking for a free software alternative), so I do not know if they are
coming out out the speakers.  I thus do not quite know how to figure
out if the missing frequencies is a problem with the microphone, the
amplifier or the speakers, but I managed to rule out the audio card in my
PC by measuring my Bose noise canceling headset using its own
microphone.  This setup was able to see the high frequency tones, so
the problem with my stereo had to be in the amplifier or speakers.&lt;/p&gt;

&lt;p&gt;Anyway, to try to role out one factor I ended up picking up a new
set of speakers at a flee marked, and these work a lot better than the
old speakers, so I guess the microphone and amplifier is OK.  If you
need to measure your own speakers, check out AUDMES.  If more people
get involved, perhaps the project could become good enough to
&lt;a href=&quot;https://bugs.debian.org/910876&quot;&gt;include in Debian&lt;/a&gt;?  And if
you know of some other free software to measure speakers and amplifier
performance, please let me know.  I am aware of the freeware option
&lt;a href=&quot;https://www.roomeqwizard.com/&quot;&gt;REW&lt;/a&gt;, but I want something
that can be developed also when the vendor looses interest.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Web browser integration of VLC with Bittorrent support</title>
                <link>http://people.skolelinux.org/pere/blog/Web_browser_integration_of_VLC_with_Bittorrent_support.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Web_browser_integration_of_VLC_with_Bittorrent_support.html</guid>
                <pubDate>Sun, 21 Oct 2018 09:50:00 +0200</pubDate>
                <description>&lt;p&gt;Bittorrent is as far as I know, currently the most efficient way to
distribute content on the Internet.  It is used all by all sorts of
content providers, from national TV stations like
&lt;a href=&quot;https://www.nrk.no/&quot;&gt;NRK&lt;/a&gt;, Linux distributors like
&lt;a href=&quot;https://www.debian.org/&quot;&gt;Debian&lt;/a&gt; and
&lt;a href=&quot;https://www.ubuntu.com/&quot;&gt;Ubuntu&lt;/a&gt;, and of course the
&lt;a href=&quot;https://archive.org/&quot;&gt;Internet archive&lt;/A&gt;.

&lt;p&gt;Almost a month ago
&lt;a href=&quot;https://tracker.debian.org/pkg/vlc-plugin-bittorrent&quot;&gt;a new
package adding Bittorrent support to VLC&lt;/a&gt; became available in
Debian testing and unstable.  To test it, simply install it like
this:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
apt install vlc-plugin-bittorrent
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Since the plugin was made available for the first time in Debian,
several improvements have been made to it.  In version 2.2-4, now
available in both testing and unstable, a desktop file is provided to
teach browsers to start VLC when the user click on torrent files or
magnet links.  The last part is thanks to me finally understanding
what the strange x-scheme-handler style MIME types in desktop files
are used for.  By adding x-scheme-handler/magnet to the MimeType entry
in the desktop file, at least the browsers Firefox and Chromium will
suggest to start VLC when selecting a magnet URI on a web page.  The
end result is that now, with the plugin installed in Buster and Sid,
one can visit any
&lt;a href=&quot;https://archive.org/details/CopyingIsNotTheft1080p&quot;&gt;Internet
Archive page with movies&lt;/a&gt; using a web browser and click on the
torrent link to start streaming the movie.&lt;/p&gt;

&lt;p&gt;Note, there is still some misfeatures in the plugin.  One is the
fact that it will hang and
&lt;a href=&quot;https://github.com/johang/vlc-bittorrent/issues/13&quot;&gt;block VLC
from exiting until the torrent streaming starts&lt;/a&gt;.  Another is the
fact that it
&lt;a href=&quot;https://github.com/johang/vlc-bittorrent/issues/9&quot;&gt;will pick
and play a random file in a multi file torrent&lt;/a&gt;.  This is not
always the video file you want.  Combined with the first it can be a
bit hard to get the video streaming going.  But when it work, it seem
to do a good job.&lt;/p&gt;

&lt;p&gt;For the Debian packaging, I would love to find a good way to test
if the plugin work with VLC using autopkgtest.  I tried, but do not
know enough of the inner workings of VLC to get it working.  For now
the autopkgtest script is only checking if the .so file was
successfully loaded by VLC.  If you have any suggestions, please
submit a patch to the Debian bug tracking system.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Release 0.2 of free software archive system Nikita announced</title>
                <link>http://people.skolelinux.org/pere/blog/Release_0_2_of_free_software_archive_system_Nikita_announced.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Release_0_2_of_free_software_archive_system_Nikita_announced.html</guid>
                <pubDate>Thu, 18 Oct 2018 14:40:00 +0200</pubDate>
                <description>&lt;p&gt;This morning, the new release of the
&lt;a href=&quot;https://gitlab.com/OsloMet-ABI/nikita-noark5-core/&quot;&gt;Nikita
Noark 5 core project&lt;/a&gt; was
&lt;a href=&quot;https://lists.nuug.no/pipermail/nikita-noark/2018-October/000406.html&quot;&gt;announced
on the project mailing list&lt;/a&gt;.  The free software solution is an
implementation of the Norwegian archive standard Noark 5 used by
government offices in Norway.  These were the changes in version 0.2
since version 0.1.1 (from NEWS.md):

&lt;ul&gt;
  &lt;li&gt;Fix typos in REL names&lt;/li&gt;
  &lt;li&gt;Tidy up error message reporting&lt;/li&gt;
  &lt;li&gt;Fix issue where we used Integer.valueOf(), not Integer.getInteger()&lt;/li&gt;
  &lt;li&gt;Change some String handling to StringBuffer&lt;/li&gt;
  &lt;li&gt;Fix error reporting&lt;/li&gt;
  &lt;li&gt;Code tidy-up&lt;/li&gt;
  &lt;li&gt;Fix issue using static non-synchronized SimpleDateFormat to avoid 
      race conditions&lt;/li&gt;
  &lt;li&gt;Fix problem where deserialisers were treating integers as strings&lt;/li&gt;
  &lt;li&gt;Update methods to make them null-safe&lt;/li&gt;
  &lt;li&gt;Fix many issues reported by coverity&lt;/li&gt;
  &lt;li&gt;Improve equals(), compareTo() and hash() in domain model&lt;/li&gt;
  &lt;li&gt;Improvements to the domain model for metadata classes&lt;/li&gt;
  &lt;li&gt;Fix CORS issues when downloading document&lt;/li&gt;
  &lt;li&gt;Implementation of case-handling with registryEntry and document upload&lt;/li&gt;
  &lt;li&gt;Better support in Javascript for OPTIONS&lt;/li&gt;
  &lt;li&gt;Adding concept description of mail integration&lt;/li&gt;
  &lt;li&gt;Improve setting of default values for GET on ny-journalpost&lt;/li&gt;
  &lt;li&gt;Better handling of required values during deserialisation &lt;/li&gt;
  &lt;li&gt;Changed tilknyttetDato (M620) from date to dateTime&lt;/li&gt;
  &lt;li&gt;Corrected some opprettetDato (M600) (de)serialisation errors.&lt;/li&gt;
  &lt;li&gt;Improve parse error reporting.&lt;/li&gt;
  &lt;li&gt;Started on OData search and filtering.&lt;/li&gt;
  &lt;li&gt;Added Contributor Covenant Code of Conduct to project.&lt;/li&gt;
  &lt;li&gt;Moved repository and project from Github to Gitlab.&lt;/li&gt;
  &lt;li&gt;Restructured repository, moved code into src/ and web/.&lt;/li&gt;
  &lt;li&gt;Updated code to use Spring Boot version 2.&lt;/li&gt;
  &lt;li&gt;Added support for OAuth2 authentication.&lt;/li&gt;
  &lt;li&gt;Fixed several bugs discovered by Coverity.&lt;/li&gt;
  &lt;li&gt;Corrected handling of date/datetime fields.&lt;/li&gt;
  &lt;li&gt;Improved error reporting when rejecting during deserializatoin.&lt;/li&gt;
  &lt;li&gt;Adjusted default values provided for ny-arkivdel, ny-mappe,
   ny-saksmappe, ny-journalpost and ny-dokumentbeskrivelse.&lt;/li&gt;
  &lt;li&gt;Several fixes for korrespondansepart*.&lt;/li&gt;
  &lt;li&gt;Updated web GUI:
     &lt;ul&gt;
       &lt;li&gt;Now handle both file upload and download.&lt;/li&gt;
       &lt;li&gt;Uses new OAuth2 authentication for login.&lt;/li&gt;
       &lt;li&gt;Forms now fetches default values from API using GET.&lt;/li&gt;
       &lt;li&gt;Added RFC 822 (email), TIFF and JPEG to list of possible file formats.&lt;/li&gt;
     &lt;/ul&gt;&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;The changes and improvements are extensive.  Running diffstat on
the changes between git tab 0.1.1 and 0.2 show 1098 files changed,
108666 insertions(+), 54066 deletions(-).&lt;/p&gt;

&lt;p&gt;If free and open standardized archiving API sound interesting to
you, please contact us on IRC
(&lt;a href=&quot;irc://irc.freenode.net/%23nikita&quot;&gt;#nikita on
irc.freenode.net&lt;/a&gt;) or email
(&lt;a href=&quot;https://lists.nuug.no/mailman/listinfo/nikita-noark&quot;&gt;nikita-noark
mailing list&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Fetching trusted timestamps using the rfc3161ng python module</title>
                <link>http://people.skolelinux.org/pere/blog/Fetching_trusted_timestamps_using_the_rfc3161ng_python_module.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Fetching_trusted_timestamps_using_the_rfc3161ng_python_module.html</guid>
                <pubDate>Mon, 8 Oct 2018 12:30:00 +0200</pubDate>
                <description>&lt;p&gt;I have  earlier covered the basics of trusted timestamping using the
&#39;openssl ts&#39; client.  See blog post for
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html&quot;&gt;2014&lt;/a&gt;,
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/syslog_trusted_timestamp___chain_of_trusted_timestamps_for_your_syslog.html&quot;&gt;2016&lt;/a&gt;
and
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html&quot;&gt;2017&lt;/a&gt;
for those stories.  But some times I want to integrate the timestamping
in other code, and recently I needed to integrate it into Python.
After searching a bit, I found
&lt;a href=&quot;https://dev.entrouvert.org/projects/python-rfc3161&quot;&gt;the
rfc3161 library&lt;/a&gt; which seemed like a good fit, but I soon
discovered it only worked for python version 2, and I needed something
that work with python version 3.  Luckily I next came across
&lt;a href=&quot;https://github.com/trbs/rfc3161ng/&quot;&gt;the rfc3161ng library&lt;/a&gt;,
a fork of the original rfc3161 library.  Not only is it working with
python 3, it have fixed a few of the bugs in the original library, and
it has an active maintainer.  I decided to wrap it up and make it
&lt;a href=&quot;https://tracker.debian.org/pkg/python-rfc3161ng&quot;&gt;available in
Debian&lt;/a&gt;, and a few days ago it entered Debian unstable and testing.&lt;/p&gt;

&lt;p&gt;Using the library is fairly straight forward.  The only slightly
problematic step is to fetch the required certificates to verify the
timestamp.  For some services it is straight forward, while for others
I have not yet figured out how to do it.  Here is a small standalone
code example based on of the integration tests in the library code:&lt;/p&gt;

&lt;pre&gt;
#!/usr/bin/python3

&quot;&quot;&quot;

Python 3 script demonstrating how to use the rfc3161ng module to
get trusted timestamps.

The license of this code is the same as the license of the rfc3161ng
library, ie MIT/BSD.

&quot;&quot;&quot;

import os
import pyasn1.codec.der
import rfc3161ng
import subprocess
import tempfile
import urllib.request

def store(f, data):
    f.write(data)
    f.flush()
    f.seek(0)

def fetch(url, f=None):
    response = urllib.request.urlopen(url)
    data = response.read()
    if f:
        store(f, data)
    return data

def main():
    with tempfile.NamedTemporaryFile() as cert_f,\
         tempfile.NamedTemporaryFile() as ca_f,\
         tempfile.NamedTemporaryFile() as msg_f,\
         tempfile.NamedTemporaryFile() as tsr_f:

        # First fetch certificates used by service
        certificate_data = fetch(&#39;https://freetsa.org/files/tsa.crt&#39;, cert_f)
        ca_data_data = fetch(&#39;https://freetsa.org/files/cacert.pem&#39;, ca_f)

        # Then timestamp the message
        timestamper = \
            rfc3161ng.RemoteTimestamper(&#39;http://freetsa.org/tsr&#39;,
                                        certificate=certificate_data)
        data = b&quot;Python forever!\n&quot;
        tsr = timestamper(data=data, return_tsr=True)

        # Finally, convert message and response to something &#39;openssl ts&#39; can verify
        store(msg_f, data)
        store(tsr_f, pyasn1.codec.der.encoder.encode(tsr))
        args = [&quot;openssl&quot;, &quot;ts&quot;, &quot;-verify&quot;,
                &quot;-data&quot;, msg_f.name,
                &quot;-in&quot;, tsr_f.name,
                &quot;-CAfile&quot;, ca_f.name,
                &quot;-untrusted&quot;, cert_f.name]
        subprocess.check_call(args)

if &#39;__main__&#39; == __name__:
   main()
&lt;/pre&gt;

&lt;p&gt;The code fetches the required certificates, store them as temporary
files, timestamp a simple message, store the message and timestamp to
disk and ask &#39;openssl ts&#39; to verify the timestamp.  A timestamp is
around 1.5 kiB in size, and should be fairly easy to store for future
use.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Automatic Google Drive sync using grive in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Automatic_Google_Drive_sync_using_grive_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Automatic_Google_Drive_sync_using_grive_in_Debian.html</guid>
                <pubDate>Thu, 4 Oct 2018 15:20:00 +0200</pubDate>
                <description>&lt;p&gt;A few days, I rescued a Windows victim over to Debian.  To try to
rescue the remains, I helped set up automatic sync with Google Drive.
I did not find any sensible Debian package handling this
automatically, so I rebuild the grive2 source from
&lt;a href=&quot;http://www.webupd8.org/&quot;&gt;the Ubuntu UPD8 PPA&lt;/a&gt; to do the
task and added a autostart desktop entry and a small shell script to
run in the background while the user is logged in to do the sync.
Here is a sketch of the setup for future reference.&lt;/p&gt;

&lt;p&gt;I first created &lt;tt&gt;~/googledrive&lt;/tt&gt;, entered the directory and
ran &#39;&lt;tt&gt;grive -a&lt;/tt&gt;&#39; to authenticate the machine/user.  Next, I
created a autostart hook in &lt;tt&gt;~/.config/autostart/grive.desktop&lt;/tt&gt;
to start the sync when the user log in:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
[Desktop Entry]
Name=Google drive autosync
Type=Application
Exec=/home/user/bin/grive-sync
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Finally, I wrote the &lt;tt&gt;~/bin/grive-sync&lt;/tt&gt; script to sync
~/googledrive/ with the files in Google Drive.&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
set -e
cd ~/
cleanup() {
    if [ &quot;$syncpid&quot; ] ; then
        kill $syncpid
    fi
}
trap cleanup EXIT INT QUIT
/usr/lib/grive/grive-sync.sh listen googledrive 2&gt;&amp;1 | sed &quot;s%^%$0:%&quot; &amp;
syncpdi=$!
while true; do
    if ! xhost &gt;/dev/null 2&gt;&amp;1 ; then
        echo &quot;no DISPLAY, exiting as the user probably logged out&quot;
        exit 1
    fi
    if [ ! -e /run/user/1000/grive-sync.sh_googledrive ] ; then
        /usr/lib/grive/grive-sync.sh sync googledrive
    fi
    sleep 300
done 2&gt;&amp;1 | sed &quot;s%^%$0:%&quot;
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Feel free to use the setup if you want.  It can be assumed to be
GNU GPL v2 licensed (or any later version, at your leisure), but I
doubt this code is possible to claim copyright on.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Valutakrambod - A python and bitcoin love story</title>
                <link>http://people.skolelinux.org/pere/blog/Valutakrambod___A_python_and_bitcoin_love_story.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Valutakrambod___A_python_and_bitcoin_love_story.html</guid>
                <pubDate>Sat, 29 Sep 2018 22:20:00 +0200</pubDate>
                <description>&lt;p&gt;It would come as no surprise to anyone that I am interested in
bitcoins and virtual currencies.  I&#39;ve been keeping an eye on virtual
currencies for many years, and it is part of the reason a few months
ago, I started writing a python library for collecting currency
exchange rates and trade on virtual currency exchanges.  I decided to
name the end result valutakrambod, which perhaps can be translated to
small currency shop.&lt;/p&gt;

&lt;p&gt;The library uses the tornado python library to handle HTTP and
websocket connections, and provide a asynchronous system for
connecting to and tracking several services.  The code is available
from
&lt;a href=&quot;http://github.com/petterreinholdtsen/valutakrambod&quot;&gt;github&lt;/a&gt;.&lt;/p&gt;

&lt;/p&gt;There are two example clients of the library.  One is very simple and
list every updated buy/sell price received from the various services.
This code is started by running bin/btc-rates and call the client code
in valutakrambod/client.py.  The simple client look like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
import functools
import tornado.ioloop
import valutakrambod
class SimpleClient(object):
    def __init__(self):
        self.services = []
        self.streams = []
        pass
    def newdata(self, service, pair, changed):
        print(&quot;%-15s %s-%s: %8.3f %8.3f&quot; % (
            service.servicename(),
            pair[0],
            pair[1],
            service.rates[pair][&#39;ask&#39;],
            service.rates[pair][&#39;bid&#39;])
        )
    async def refresh(self, service):
        await service.fetchRates(service.wantedpairs)
    def run(self):
        self.ioloop = tornado.ioloop.IOLoop.current()
        self.services = valutakrambod.service.knownServices()
        for e in self.services:
            service = e()
            service.subscribe(self.newdata)
            stream = service.websocket()
            if stream:
                self.streams.append(stream)
            else:
                # Fetch information from non-streaming services immediately
                self.ioloop.call_later(len(self.services),
                                       functools.partial(self.refresh, service))
                # as well as regularly
                service.periodicUpdate(60)
        for stream in self.streams:
            stream.connect()
        try:
            self.ioloop.start()
        except KeyboardInterrupt:
            print(&quot;Interrupted by keyboard, closing all connections.&quot;)
            pass
        for stream in self.streams:
            stream.close()
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The library client loops over all known &quot;public&quot; services,
initialises it, subscribes to any updates from the service, checks and
activates websocket streaming if the service provide it, and if no
streaming is supported, fetches information from the service and sets
up a periodic update every 60 seconds.  The output from this client
can look like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
Bl3p            BTC-EUR: 5687.110 5653.690
Bl3p            BTC-EUR: 5687.110 5653.690
Bl3p            BTC-EUR: 5687.110 5653.690
Hitbtc          BTC-USD: 6594.560 6593.690
Hitbtc          BTC-USD: 6594.560 6593.690
Bl3p            BTC-EUR: 5687.110 5653.690
Hitbtc          BTC-USD: 6594.570 6593.690
Bitstamp        EUR-USD:    1.159    1.154
Hitbtc          BTC-USD: 6594.570 6593.690
Hitbtc          BTC-USD: 6594.580 6593.690
Hitbtc          BTC-USD: 6594.580 6593.690
Hitbtc          BTC-USD: 6594.580 6593.690
Bl3p            BTC-EUR: 5687.110 5653.690
Paymium         BTC-EUR: 5680.000 5620.240
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The exchange order book is tracked in addition to the best buy/sell
price, for those that need to know the details.&lt;/p&gt;

&lt;p&gt;The other example client is focusing on providing a curses view
with updated buy/sell prices as soon as they are received from the
services.  This code is located in bin/btc-rates-curses and activated
by using the &#39;-c&#39; argument.  Without the argument the &quot;curses&quot; output
is printed without using curses, which is useful for debugging.  The
curses view look like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
           Name Pair   Bid         Ask         Spr    Ftcd    Age
 BitcoinsNorway BTCEUR   5591.8400   5711.0800   2.1%   16    nan     60
       Bitfinex BTCEUR   5671.0000   5671.2000   0.0%   16     22     59
        Bitmynt BTCEUR   5580.8000   5807.5200   3.9%   16     41     60
         Bitpay BTCEUR   5663.2700         nan   nan%   15    nan     60
       Bitstamp BTCEUR   5664.8400   5676.5300   0.2%    0      1      1
           Bl3p BTCEUR   5653.6900   5684.9400   0.5%    0    nan     19
       Coinbase BTCEUR   5600.8200   5714.9000   2.0%   15    nan    nan
         Kraken BTCEUR   5670.1000   5670.2000   0.0%   14     17     60
        Paymium BTCEUR   5620.0600   5680.0000   1.1%    1   7515    nan
 BitcoinsNorway BTCNOK  52898.9700  54034.6100   2.1%   16    nan     60
        Bitmynt BTCNOK  52960.3200  54031.1900   2.0%   16     41     60
         Bitpay BTCNOK  53477.7833         nan   nan%   16    nan     60
       Coinbase BTCNOK  52990.3500  54063.0600   2.0%   15    nan    nan
        MiraiEx BTCNOK  52856.5300  54100.6000   2.3%   16    nan    nan
 BitcoinsNorway BTCUSD   6495.5300   6631.5400   2.1%   16    nan     60
       Bitfinex BTCUSD   6590.6000   6590.7000   0.0%   16     23     57
         Bitpay BTCUSD   6564.1300         nan   nan%   15    nan     60
       Bitstamp BTCUSD   6561.1400   6565.6200   0.1%    0      2      1
       Coinbase BTCUSD   6504.0600   6635.9700   2.0%   14    nan    117
         Gemini BTCUSD   6567.1300   6573.0700   0.1%   16     89    nan
         Hitbtc+BTCUSD   6592.6200   6594.2100   0.0%    0      0      0
         Kraken BTCUSD   6565.2000   6570.9000   0.1%   15     17     58
  Exchangerates EURNOK      9.4665      9.4665   0.0%   16 107789    nan
     Norgesbank EURNOK      9.4665      9.4665   0.0%   16 107789    nan
       Bitstamp EURUSD      1.1537      1.1593   0.5%    4      5      1
  Exchangerates EURUSD      1.1576      1.1576   0.0%   16 107789    nan
 BitcoinsNorway LTCEUR      1.0000     49.0000  98.0%   16    nan    nan
 BitcoinsNorway LTCNOK    492.4800    503.7500   2.2%   16    nan     60
 BitcoinsNorway LTCUSD      1.0221     49.0000  97.9%   15    nan    nan
     Norgesbank USDNOK      8.1777      8.1777   0.0%   16 107789    nan
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The code for this client is too complex for a simple blog post, so
you will have to check out the git repository to figure out how it
work.  What I can tell is how the three last numbers on each line
should be interpreted.  The first is how many seconds ago information
was received from the service.  The second is how long ago, according
to the service, the provided information was updated.  The last is an
estimate on how often the buy/sell values change.&lt;/p&gt;

&lt;p&gt;If you find this library useful, or would like to improve it, I
would love to hear from you.  Note that for some of the services I&#39;ve
implemented a trading API.  It might be the topic of a future blog
post.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>VLC in Debian now can do bittorrent streaming</title>
                <link>http://people.skolelinux.org/pere/blog/VLC_in_Debian_now_can_do_bittorrent_streaming.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/VLC_in_Debian_now_can_do_bittorrent_streaming.html</guid>
                <pubDate>Mon, 24 Sep 2018 21:20:00 +0200</pubDate>
                <description>&lt;p&gt;Back in February, I got curious to see
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html&quot;&gt;if
VLC now supported Bittorrent streaming&lt;/a&gt;.  It did not, despite the
fact that the idea and code to handle such streaming had been floating
around for years.  I did however find
&lt;a href=&quot;https://github.com/johang/vlc-bittorrent&quot;&gt;a standalone plugin
for VLC&lt;/a&gt; to do it, and half a year later I decided to wrap up the
plugin and get it into Debian.  I uploaded it to NEW a few days ago,
and am very happy to report that it
&lt;a href=&quot;https://tracker.debian.org/pkg/vlc-plugin-bittorrent&quot;&gt;entered
Debian&lt;/a&gt; a few hours ago, and should be available in Debian/Unstable
tomorrow, and Debian/Testing in a few days.&lt;/p&gt;

&lt;p&gt;With the vlc-plugin-bittorrent package installed you should be able
to stream videos using a simple call to&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
vlc https://archive.org/download/TheGoat/TheGoat_archive.torrent
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;/p&gt;It can handle magnet links too.  Now if only native vlc had
bittorrent support.  Then a lot more would be helping each other to
share public domain and creative commons movies.  The plugin need some
stability work with seeking and picking the right file in a torrent
with many files, but is already usable.  Please note that the plugin
is not removing downloaded files when vlc is stopped, so it can fill
up your disk if you are not careful.  Have fun. :)&lt;/p&gt;

&lt;p&gt;I would love to get help maintaining this package.  Get in touch if
you are interested.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Using the Kodi API to play Youtube videos</title>
                <link>http://people.skolelinux.org/pere/blog/Using_the_Kodi_API_to_play_Youtube_videos.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_the_Kodi_API_to_play_Youtube_videos.html</guid>
                <pubDate>Sun, 2 Sep 2018 23:40:00 +0200</pubDate>
                <description>&lt;p&gt;I continue to explore my Kodi installation, and today I wanted to
tell it to play a youtube URL I received in a chat, without having to
insert search terms using the on-screen keyboard.  After searching the
web for API access to the Youtube plugin and testing a bit, I managed
to find a recipe that worked.  If you got a kodi instance with its API
available from http://kodihost/jsonrpc, you can try the following to
have check out a nice cover band.&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;curl --silent --header &#39;Content-Type: application/json&#39; \
  --data-binary &#39;{ &quot;id&quot;: 1, &quot;jsonrpc&quot;: &quot;2.0&quot;, &quot;method&quot;: &quot;Player.Open&quot;,
  &quot;params&quot;: {&quot;item&quot;: { &quot;file&quot;:
  &quot;plugin://plugin.video.youtube/play/?video_id=LuRGVM9O0qg&quot; } } }&#39; \
  http://projector.local/jsonrpc&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I&#39;ve extended kodi-stream program to take a video source as its
first argument.  It can now handle direct video links, youtube links
and &#39;desktop&#39; to stream my desktop to Kodi.  It is almost like a
Chromecast. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Software created using taxpayers’ money should be Free Software</title>
                <link>http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html</guid>
                <pubDate>Thu, 30 Aug 2018 13:50:00 +0200</pubDate>
                <description>&lt;p&gt;It might seem obvious that software created using tax money should
be available for everyone to use and improve.  Free Software
Foundation Europe recentlystarted a campaign to help get more people
to understand this, and I just signed the petition on
&lt;a href=&quot;https://publiccode.eu/&quot;&gt;Public Money, Public Code&lt;/a&gt; to help
them. I hope you too will do the same.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A bit more on privacy respecting health monitor / fitness tracker</title>
                <link>http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html</guid>
                <pubDate>Mon, 13 Aug 2018 09:00:00 +0200</pubDate>
                <description>&lt;p&gt;A few days ago, I wondered if there are any privacy respecting
health monitors and/or fitness trackers available for sale these days.
I would like to buy one, but do not want to share my personal data
with strangers, nor be forced to have a mobile phone to get data out
of the unit.  I&#39;ve received some ideas, and would like to share them
with you.

One interesting data point was a pointer to a Free Software app for
Android named
&lt;a href=&quot;https://github.com/Freeyourgadget/Gadgetbridge/&quot;&gt;Gadgetbridge&lt;/a&gt;.
It provide cloudless collection and storing of data from a variety of
trackers.  Its
&lt;a href=&quot;https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices&quot;&gt;list
of supported devices&lt;/a&gt; is a good indicator for units where the
protocol is fairly open, as it is obviously being handled by Free
Software.  Other units are reportedly encrypting the collected
information with their own public key, making sure only the vendor
cloud service is able to extract data from the unit.  The people
contacting me about Gadgetbirde said they were using
&lt;a href=&quot;https://us.amazfit.com/shop/bip?variant=336750&quot;&gt;Amazfit
Bip&lt;/a&gt; and
&lt;a href=&quot;http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/&quot;&gt;Xiaomi
Band 3&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I also got a suggestion to look at some of the units from Garmin.
I was told their GPS watches can be connected via USB and show up as a
USB storage device with
&lt;a href=&quot;https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html&quot;&gt;Garmin
FIT files&lt;/a&gt; containing the collected measurements.  While
proprietary, FIT files apparently can be read at least by
&lt;a href=&quot;https://www.gpsbabel.org&quot;&gt;GPSBabel&lt;/a&gt; and the
&lt;a href=&quot;https://apps.nextcloud.com/apps/gpxpod&quot;&gt;GpxPod&lt;/a&gt; Nextcloud
app.  It is unclear to me if they can read step count and heart rate
data.  The person I talked to was using a
&lt;a href=&quot;https://buy.garmin.com/en-US/US/p/564291&quot;&gt;Garmin Forerunner
935&lt;/a&gt;, which is a fairly expensive unit.  I doubt it is worth it for
a unit where the vendor clearly is trying its best to move from open
to closed systems.  I still remember when Garmin dropped NMEA support
in its GPSes.&lt;/p&gt;

&lt;p&gt;A final idea was to build ones own unit, perhaps by basing it on a
wearable hardware platforms like
&lt;a href=&quot;https://learn.adafruit.com/flora-geo-watch&quot;&gt;the Flora Geo
Watch&lt;/a&gt;.  Sound like fun, but I had more money than time to spend on
the topic, so I suspect it will have to wait for another time.&lt;/p&gt;

&lt;p&gt;While I was working on tracking down links, I came across an
inspiring TED talk by Dave Debronkart about
&lt;a href=&quot;https://archive.org/details/DavedeBronkart_2010X&quot;&gt;being a
e-patient&lt;/a&gt;, and discovered the web site
&lt;a href=&quot;https://participatorymedicine.org/epatients/&quot;&gt;Participatory
Medicine&lt;/a&gt;.  If you too want to track your own health and fitness
without having information about your private life floating around on
computers owned by others, I recommend checking it out.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Privacy respecting health monitor / fitness tracker?</title>
                <link>http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html</guid>
                <pubDate>Tue, 7 Aug 2018 16:00:00 +0200</pubDate>
                <description>&lt;p&gt;Dear lazyweb,&lt;/p&gt;

&lt;p&gt;I wonder, is there a fitness tracker / health monitor available for
sale today that respect the users privacy?  With this I mean a
watch/bracelet capable of measuring pulse rate and other
fitness/health related values (and by all means, also the correct time
and location if possible), which is &lt;strong&gt;only&lt;/strong&gt; provided for
me to extract/read from the unit with computer without a radio beacon
and Internet connection.  In other words, it do not depend on a cell
phone app, and do make the measurements available via other peoples
computer (aka &quot;the cloud&quot;).  The collected data should be available
using only free software.  I&#39;m not interested in depending on some
non-free software that will leave me high and dry some time in the
future.  I&#39;ve been unable to find any such unit.  I would like to buy
it.  The ones I have seen for sale here in Norway are proud to report
that they share my health data with strangers (aka &quot;cloud enabled&quot;).
Is there an alternative?  I&#39;m not interested in giving money to people
requiring me to accept &quot;privacy terms&quot; to allow myself to measure my
own health.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Sharing images with friends and family using RSS and EXIF/XMP metadata</title>
                <link>http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html</guid>
                <pubDate>Tue, 31 Jul 2018 23:30:00 +0200</pubDate>
                <description>&lt;p&gt;For a while now, I have looked for a sensible way to share images
with my family using a self hosted solution, as it is unacceptable to
place images from my personal life under the control of strangers
working for data hoarders like Google or Dropbox.  The last few days I
have drafted an approach that might work out, and I would like to
share it with you.  I would like to publish images on a server under
my control, and point some Internet connected display units using some
free and open standard to the images I published.  As my primary
language is not limited to ASCII, I need to store metadata using
UTF-8.  Many years ago, I hoped to find a digital photo frame capable
of reading a RSS feed with image references (aka using the
&amp;lt;enclosure&amp;gt; RSS tag), but was unable to find a current supplier
of such frames.  In the end I gave up that approach.&lt;/p&gt;

&lt;p&gt;Some months ago, I discovered that
&lt;a href=&quot;https://www.jwz.org/xscreensaver/&quot;&gt;XScreensaver&lt;/a&gt; is able to
read images from a RSS feed, and used it to set up a screen saver on
my home info screen, showing images from the Daily images feed from
NASA.  This proved to work well.  More recently I discovered that
&lt;a href=&quot;https://kodi.tv&quot;&gt;Kodi&lt;/a&gt; (both using
&lt;a href=&quot;https://www.openelec.tv/&quot;&gt;OpenELEC&lt;/a&gt; and
&lt;a href=&quot;https://libreelec.tv&quot;&gt;LibreELEC&lt;/a&gt;) provide the
&lt;a href=&quot;https://github.com/grinsted/script.screensaver.feedreader&quot;&gt;Feedreader&lt;/a&gt;
screen saver capable of reading a RSS feed with images and news.  For
fun, I used it this summer to test Kodi on my parents TV by hooking up
a Raspberry PI unit with LibreELEC, and wanted to provide them with a
screen saver showing selected pictures from my selection.&lt;/p&gt;

&lt;p&gt;Armed with motivation and a test photo frame, I set out to generate
a RSS feed for the Kodi instance.  I adjusted my &lt;a
href=&quot;https://freedombox.org/&quot;&gt;Freedombox&lt;/a&gt; instance, created
/var/www/html/privatepictures/, wrote a small Perl script to extract
title and description metadata from the photo files and generate the
RSS file.  I ended up using Perl instead of python, as the
libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
tags I ended up using, while python3-exif did not.  The relevant EXIF
tags only support ASCII, so I had to find better alternatives.  XMP
seem to have the support I need.&lt;/p&gt;

&lt;p&gt;I am a bit unsure which EXIF/XMP tags to use, as I would like to
use tags that can be easily added/updated using normal free software
photo managing software.  I ended up using the tags set using this
exiftool command, as these tags can also be set using digiKam:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
exiftool -headline=&#39;The RSS image title&#39; \
  -description=&#39;The RSS image description.&#39; \
  -subject+=for-family photo.jpeg
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;I initially tried the &quot;-title&quot; and &quot;keyword&quot; tags, but they were
invisible in digiKam, so I changed to &quot;-headline&quot; and &quot;-subject&quot;.  I
use the keyword/subject &#39;for-family&#39; to flag that the photo should be
shared with my family.  Images with this keyword set are located and
copied into my Freedombox for the RSS generating script to find.&lt;/p&gt;

&lt;p&gt;Are there better ways to do this?  Get in touch if you have better
suggestions.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Simple streaming the Linux desktop to Kodi using GStreamer and RTP</title>
                <link>http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html</guid>
                <pubDate>Thu, 12 Jul 2018 17:55:00 +0200</pubDate>
                <description>&lt;p&gt;Last night, I wrote
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html&quot;&gt;a
recipe to stream a Linux desktop using VLC to a instance of Kodi&lt;/a&gt;.
During the day I received valuable feedback, and thanks to the
suggestions I have been able to rewrite the recipe into a much simpler
approach requiring no setup at all.  It is a single script that take
care of it all.&lt;/p&gt;

&lt;p&gt;This new script uses GStreamer instead of VLC to capture the
desktop and stream it to Kodi.  This fixed the video quality issue I
saw initially.  It further removes the need to add a m3u file on the
Kodi machine, as it instead connects to
&lt;a href=&quot;https://kodi.wiki/view/JSON-RPC_API/v8&quot;&gt;the JSON-RPC API in
Kodi&lt;/a&gt; and simply ask Kodi to play from the stream created using
GStreamer.  Streaming the desktop to Kodi now become trivial.  Copy
the script below, run it with the DNS name or IP address of the kodi
server to stream to as the only argument, and watch your screen show
up on the Kodi screen.  Note, it depend on multicast on the local
network, so if you need to stream outside the local network, the
script must be modified.  Also note, I have no idea if audio work, as
I only care about the picture part.&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
#
# Stream the Linux desktop view to Kodi.  See
# http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
# for backgorund information.

# Make sure the stream is stopped in Kodi and the gstreamer process is
# killed if something go wrong (for example if curl is unable to find the
# kodi server).  Do the same when interrupting this script.
kodicmd() {
    host=&quot;$1&quot;
    cmd=&quot;$2&quot;
    params=&quot;$3&quot;
    curl --silent --header &#39;Content-Type: application/json&#39; \
         --data-binary &quot;{ \&quot;id\&quot;: 1, \&quot;jsonrpc\&quot;: \&quot;2.0\&quot;, \&quot;method\&quot;: \&quot;$cmd\&quot;, \&quot;params\&quot;: $params }&quot; \
         &quot;http://$host/jsonrpc&quot;
}
cleanup() {
    if [ -n &quot;$kodihost&quot; ] ; then
        # Stop the playing when we end
        playerid=$(kodicmd &quot;$kodihost&quot; Player.GetActivePlayers &quot;{}&quot; |
                            jq .result[].playerid)
        kodicmd &quot;$kodihost&quot; Player.Stop &quot;{ \&quot;playerid\&quot; : $playerid }&quot; &gt; /dev/null
    fi
    if [ &quot;$gstpid&quot; ] &amp;&amp; kill -0 &quot;$gstpid&quot; &gt;/dev/null 2&gt;&amp;1; then
        kill &quot;$gstpid&quot;
    fi
}
trap cleanup EXIT INT

if [ -n &quot;$1&quot; ]; then
    kodihost=$1
    shift
else
    kodihost=kodi.local
fi

mcast=239.255.0.1
mcastport=1234
mcastttl=1

pasrc=$(pactl list | grep -A2 &#39;Source #&#39; | grep &#39;Name: .*\.monitor$&#39; | \
  cut -d&quot; &quot; -f2|head -1)
gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
  videoconvert ! queue2 ! \
  x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
  key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
  mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
  udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
  pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
  &gt; /dev/null 2&gt;&amp;1 &amp;
gstpid=$!

# Give stream a second to get going
sleep 1

# Ask kodi to start streaming using its JSON-RPC API
kodicmd &quot;$kodihost&quot; Player.Open \
        &quot;{\&quot;item\&quot;: { \&quot;file\&quot;: \&quot;udp://@$mcast:$mcastport\&quot; } }&quot; &gt; /dev/null

# wait for gst to end
wait &quot;$gstpid&quot;
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;I hope you find the approach useful.  I know I do.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Streaming the Linux desktop to Kodi using VLC and RTSP</title>
                <link>http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html</guid>
                <pubDate>Thu, 12 Jul 2018 02:00:00 +0200</pubDate>
                <description>&lt;p&gt;PS: See
&lt;ahref=&quot;http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html&quot;&gt;the
followup post&lt;/a&gt; for a even better approach.&lt;/p&gt;

&lt;p&gt;A while back, I was asked by a friend how to stream the desktop to
my projector connected to Kodi.  I sadly had to admit that I had no
idea, as it was a task I never had tried.  Since then, I have been
looking for a way to do so, preferable without much extra software to
install on either side.  Today I found a way that seem to kind of
work.  Not great, but it is a start.&lt;/p&gt;

&lt;p&gt;I had a look at several approaches, for example
&lt;a href=&quot;https://github.com/mfoetsch/dlna_live_streaming&quot;&gt;using uPnP
DLNA as described in 2011&lt;/a&gt;, but it required a uPnP server, fuse and
local storage enough to store the stream locally.  This is not going
to work well for me, lacking enough free space, and it would
impossible for my friend to get working.&lt;/p&gt;

&lt;p&gt;Next, it occurred to me that perhaps I could use VLC to create a
video stream that Kodi could play.  Preferably using
broadcast/multicast, to avoid having to change any setup on the Kodi
side when starting such stream.  Unfortunately, the only recipe I
could find using multicast used the rtp protocol, and this protocol
seem to not be supported by Kodi.&lt;/p&gt;

&lt;p&gt;On the other hand, the rtsp protocol is working!  Unfortunately I
have to specify the IP address of the streaming machine in both the
sending command and the file on the Kodi server.  But it is showing my
desktop, and thus allow us to have a shared look on the big screen at
the programs I work on.&lt;/p&gt;

&lt;p&gt;I did not spend much time investigating codeces.  I combined the
rtp and rtsp recipes from
&lt;a href=&quot;https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/&quot;&gt;the
VLC Streaming HowTo/Command Line Examples&lt;/a&gt;, and was able to get
this working on the desktop/streaming end.&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
vlc screen:// --sout \
  &#39;#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}&#39;
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;I ssh-ed into my Kodi box and created a file like this with the
same IP address:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
echo rtsp://192.168.11.4:8080/test.sdp \
  &gt; /storage/videos/screenstream.m3u
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;Note the 192.168.11.4 IP address is my desktops IP address.  As far
as I can tell the IP must be hardcoded for this to work.  In other
words, if someone elses machine is going to do the steaming, you have
to update screenstream.m3u on the Kodi machine and adjust the vlc
recipe.  To get started, locate the file in Kodi and select the m3u
file while the VLC stream is running.  The desktop then show up in my
big screen. :)&lt;/p&gt;

&lt;p&gt;When using the same technique to stream a video file with audio,
the audio quality is really bad.  No idea if the problem is package
loss or bad parameters for the transcode.  I do not know VLC nor Kodi
enough to tell.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2018-07-12&lt;/strong&gt;: Johannes Schauer send me a few
succestions and reminded me about an important step.  The &quot;screen:&quot;
input source is only available once the vlc-plugin-access-extra
package is installed on Debian.  Without it, you will see this error
message: &quot;VLC is unable to open the MRL &#39;screen://&#39;.  Check the log
for details.&quot;  He further found that it is possible to drop some parts
of the VLC command line to reduce the amount of hardcoded information.
It is also useful to consider using cvlc to avoid having the VLC
window in the desktop view.  In sum, this give us this command line on
the source end

&lt;blockquote&gt;&lt;pre&gt;
cvlc screen:// --sout \
  &#39;#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}&#39;
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;and this on the Kodi end&lt;p&gt;

&lt;blockquote&gt;&lt;pre&gt;
echo rtsp://192.168.11.4:8080/ \
  &gt; /storage/videos/screenstream.m3u
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;Still bad image quality, though.  But I did discover that streaming
a DVD using dvdsimple:///dev/dvd as the source had excellent video and
audio quality, so I guess the issue is in the input or transcoding
parts, not the rtsp part.  I&#39;ve tried to change the vb and ab
parameters to use more bandwidth, but it did not make a
difference.&lt;/p&gt;

&lt;p&gt;I further received a suggestion from Einar Haraldseid to try using
gstreamer instead of VLC, and this proved to work great!  He also
provided me with the trick to get Kodi to use a multicast stream as
its source.  By using this monstrous oneliner, I can stream my desktop
with good video quality in reasonable framerate to the 239.255.0.1
multicast address on port 1234:

&lt;blockquote&gt;&lt;pre&gt;
gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
  videoconvert ! queue2 ! \
  x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
  key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
  mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
  udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
  pulsesrc device=$(pactl list | grep -A2 &#39;Source #&#39; | \
    grep &#39;Name: .*\.monitor$&#39; |  cut -d&quot; &quot; -f2|head -1) ! \
  audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;and this on the Kodi end&lt;p&gt;

&lt;blockquote&gt;&lt;pre&gt;
echo udp://@239.255.0.1:1234 \
  &gt; /storage/videos/screenstream.m3u
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;Note the trick to pick a valid pulseaudio source.  It might not
pick the one you need.  This approach will of course lead to trouble
if more than one source uses the same multicast port and address.
Note the ttl-mc=1 setting, which limit the multicast packages to the
local network.  If the value is increased, your screen will be
broadcasted further, one network &quot;hop&quot; for each increase (read up on
multicast to learn more. :)!&lt;/p&gt;

&lt;p&gt;Having cracked how to get Kodi to receive multicast streams, I
could use this VLC command to stream to the same multicast address.
The image quality is way better than the rtsp approach, but gstreamer
seem to be doing a better job.&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
cvlc screen:// --sout &#39;#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}&#39;
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>What is the most supported MIME type in Debian in 2018?</title>
                <link>http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html</guid>
                <pubDate>Mon, 9 Jul 2018 08:05:00 +0200</pubDate>
                <description>&lt;p&gt;Five years ago,
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html&quot;&gt;I
measured what the most supported MIME type in Debian was&lt;/a&gt;, by
analysing the desktop files in all packages in the archive.  Since
then, the DEP-11 AppStream system has been put into production, making
the task a lot easier.  This made me want to repeat the measurement,
to see how much things changed.  Here are the new numbers, for
unstable only this time:

&lt;p&gt;&lt;strong&gt;Debian Unstable:&lt;/strong&gt;&lt;/p&gt;

&lt;pre&gt;
  count MIME type
  ----- -----------------------
     56 image/jpeg
     55 image/png
     49 image/tiff
     48 image/gif
     39 image/bmp
     38 text/plain
     37 audio/mpeg
     34 application/ogg
     33 audio/x-flac
     32 audio/x-mp3
     30 audio/x-wav
     30 audio/x-vorbis+ogg
     29 image/x-portable-pixmap
     27 inode/directory
     27 image/x-portable-bitmap
     27 audio/x-mpeg
     26 application/x-ogg
     25 audio/x-mpegurl
     25 audio/ogg
     24 text/html
&lt;/pre&gt;

&lt;p&gt;The list was created like this using a sid chroot: &quot;cat
/var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk &#39;/^
- \S+\/\S+$/ {print $2 }&#39; | sort | uniq -c | sort -nr | head -20&quot;&lt;/p&gt;

&lt;p&gt;It is interesting to see how image formats have passed text/plain
as the most announced supported MIME type.  These days, thanks to the
AppStream system, if you run into a file format you do not know, and
want to figure out which packages support the format, you can find the
MIME type of the file using &quot;file --mime &amp;lt;filename&amp;gt;&quot;, and then
look up all packages announcing support for this format in their
AppStream metadata (XML or .desktop file) using &quot;appstreamcli
what-provides mimetype &amp;lt;mime-type&amp;gt;.  For example if you, like
me, want to know which packages support inode/directory, you can get a
list like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
% appstreamcli what-provides mimetype inode/directory | grep Package: | sort
Package: anjuta
Package: audacious
Package: baobab
Package: cervisia
Package: chirp
Package: dolphin
Package: doublecmd-common
Package: easytag
Package: enlightenment
Package: ephoto
Package: filelight
Package: gwenview
Package: k4dirstat
Package: kaffeine
Package: kdesvn
Package: kid3
Package: kid3-qt
Package: nautilus
Package: nemo
Package: pcmanfm
Package: pcmanfm-qt
Package: qweborf
Package: ranger
Package: sirikali
Package: spacefm
Package: spacefm
Package: vifm
%
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Using the same method, I can quickly discover that the Sketchup file
format is not yet supported by any package in Debian:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
% appstreamcli what-provides mimetype  application/vnd.sketchup.skp
Could not find component providing &#39;mimetype::application/vnd.sketchup.skp&#39;.
%
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Yesterday I used it to figure out which packages support the STL 3D
format:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
% appstreamcli what-provides mimetype  application/sla|grep Package
Package: cura
Package: meshlab
Package: printrun
%
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;PS: A new version of Cura was uploaded to Debian yesterday.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian APT upgrade without enough free space on the disk...</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html</guid>
                <pubDate>Sun, 8 Jul 2018 12:10:00 +0200</pubDate>
                <description>&lt;p&gt;Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
for a while, and when I need to update it there is not enough free
space on the disk for apt to do a normal &#39;apt upgrade&#39;.  I normally
would resolve the issue by doing &#39;apt install &amp;lt;somepackages&amp;gt;&#39; to
upgrade only some of the packages in one batch, until the amount of
packages to download fall below the amount of free space available.
Today, I had about 500 packages to upgrade, and after a while I got
tired of trying to install chunks of packages manually.  I concluded
that I did not have the spare hours required to complete the task, and
decided to see if I could automate it.  I came up with this small
script which I call &#39;apt-in-chunks&#39;:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
#
# Upgrade packages when the disk is too full to upgrade every
# upgradable package in one lump.  Fetching packages to upgrade using
# apt, and then installing using dpkg, to avoid changing the package
# flag for manual/automatic.

set -e

ignore() {
    if [ &quot;$1&quot; ]; then
        grep -v &quot;$1&quot;
    else
        cat
    fi
}

for p in $(apt list --upgradable | ignore &quot;$@&quot; |cut -d/ -f1 | grep -v &#39;^Listing...&#39;); do
    echo &quot;Upgrading $p&quot;
    apt clean
    apt install --download-only -y $p
    for f in /var/cache/apt/archives/*.deb; do
        if [ -e &quot;$f&quot; ]; then
            dpkg -i /var/cache/apt/archives/*.deb
            break
        fi
    done
done
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The script will extract the list of packages to upgrade, try to
download the packages needed to upgrade one package, install the
downloaded packages using dpkg.  The idea is to upgrade packages
without changing the APT mark for the package (ie the one recording of
the package was manually requested or pulled in as a dependency).  To
use it, simply run it as root from the command line.  If it fail, try
&#39;apt install -f&#39; to clean up the mess and run the script again.  This
might happen if the new packages conflict with one of the old
packages.  dpkg is unable to remove, while apt can do this.&lt;/p&gt;

&lt;p&gt;It take one option, a package to ignore in the list of packages to
upgrade.  The option to ignore a package is there to be able to skip
the packages that are simply too large to unpack.  Today this was
&#39;ghc&#39;, but I have run into other large packages causing similar
problems earlier (like TeX).&lt;/p&gt;

&lt;p&gt;Update 2018-07-08: Thanks to Paul Wise, I am aware of two
alternative ways to handle this.  The &quot;unattended-upgrades
--minimal-upgrade-steps&quot; option will try to calculate upgrade sets for
each package to upgrade, and then upgrade them in order, smallest set
first.  It might be a better option than my above mentioned script.
Also, &quot;aptutude upgrade&quot; can upgrade single packages, thus avoiding
the need for using &quot;dpkg -i&quot; in the script above.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The worlds only stone power plant?</title>
                <link>http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html</guid>
                <pubDate>Sat, 30 Jun 2018 10:35:00 +0200</pubDate>
                <description>&lt;p&gt;So far, at least hydro-electric power, coal power, wind power,
solar power, and wood power are well known.  Until a few days ago, I
had never heard of stone power.  Then I learn about a quarry in a
mountain in
&lt;a href=&quot;https://en.wikipedia.org/wiki/Bremanger&quot;&gt;Bremanger&lt;/a&gt; i
Norway, where
&lt;a href=&quot;https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/&quot;&gt;the
Bremanger Quarry&lt;/a&gt; company is extracting stone and dumping the stone
into a shaft leading to its shipping harbour.  This downward movement
in this shaft is used to produce electricity.  In short, it is using
falling rocks instead of falling water to produce electricity, and
according to its own statements it is producing more power than it is
using, and selling the surplus electricity to the Norwegian power
grid.  I find the concept truly amazing.  Is this the worlds only
stone power plant?&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Add-on to control the projector from within Kodi</title>
                <link>http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html</guid>
                <pubDate>Tue, 26 Jun 2018 23:55:00 +0200</pubDate>
                <description>&lt;p&gt;My movie playing setup involve &lt;a href=&quot;https://kodi.tv/&quot;&gt;Kodi&lt;/a&gt;,
&lt;a href=&quot;https://openelec.tv&quot;&gt;OpenELEC&lt;/a&gt; (probably soon to be
replaced with &lt;a href=&quot;https://libreelec.tv/&quot;&gt;LibreELEC&lt;/a&gt;) and an
Infocus IN76 video projector.  My projector can be controlled via both
a infrared remote controller, and a RS-232 serial line.  The vendor of
my projector, &lt;a href=&quot;https://www.infocus.com/&quot;&gt;InFocus&lt;/a&gt;, had been
sensible enough to document the serial protocol in its user manual, so
it is easily available, and I used it some years ago to write
&lt;a href=&quot;https://github.com/petterreinholdtsen/infocus-projector-control&quot;&gt;a
small script to control the projector&lt;/a&gt;.  For a while now, I longed
for a setup where the projector was controlled by Kodi, for example in
such a way that when the screen saver went on, the projector was
turned off, and when the screen saver exited, the projector was turned
on again.&lt;/p&gt;

&lt;p&gt;A few days ago, with very good help from parts of my family, I
managed to find a Kodi Add-on for controlling a Epson projector, and
got in touch with its author to see if we could join forces and make a
Add-on with support for several projectors.  To my pleasure, he was
positive to the idea, and we set out to add InFocus support to his
add-on, and make the add-on suitable for the official Kodi add-on
repository.&lt;/p&gt;

&lt;p&gt;The Add-on is now working (for me, at least), with a few minor
adjustments.  The most important change I do relative to the master
branch in the github repository is embedding the
&lt;a href=&quot;https://github.com/pyserial/pyserial&quot;&gt;pyserial module&lt;/a&gt; in
the add-on.  The long term solution is to make a &quot;script&quot; type
pyserial module for Kodi, that can be pulled in as a dependency in
Kodi.  But until that in place, I embed it.&lt;/p&gt;

&lt;p&gt;The add-on can be configured to turn on the projector when Kodi
starts, off when Kodi stops as well as turn the projector off when the
screensaver start and on when the screesaver stops.  It can also be
told to set the projector source when turning on the projector.

&lt;p&gt;If this sound interesting to you, check out
&lt;a href=&quot;https://github.com/fredrik-eriksson/kodi_projcontrol&quot;&gt;the
project github repository&lt;/a&gt;.  Perhaps you can send patches to
support your projector too?  As soon as we find time to wrap up the
latest changes, it should be available for easy installation using any
Kodi instance.&lt;/p&gt;

&lt;p&gt;For future improvements, I would like to add projector model
detection and the ability to adjust the brightness level of the
projector from within Kodi.  We also need to figure out how to handle
the cooling period of the projector.  My projector refuses to turn on
for 60 seconds after it was turned off.  This is not handled well by
the add-on at the moment.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Self-appointed leaders of the Free World</title>
                <link>http://people.skolelinux.org/pere/blog/Self_appointed_leaders_of_the_Free_World.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Self_appointed_leaders_of_the_Free_World.html</guid>
                <pubDate>Thu, 22 Mar 2018 11:00:00 +0100</pubDate>
                <description>&lt;p&gt;The leaders of the worlds have started to congratulate the
re-elected Russian head of state, and this causes some criticism.  I
am though a little fascinated by a comment from USA senator John McCain,
&lt;a href=&quot;http://thehill.com/homenews/senate/379339-mccain-rips-trumps-congratulatory-call-to-putin-as-insult-to-russian-people&quot;&gt;sited
by The Hill and others&lt;/a&gt;:

&lt;p&gt;&lt;blockquote&gt;
&lt;p&gt;&quot;An American president does not lead the Free World by
congratulating dictators on winning sham elections.&quot;&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;While I totally agree with the senator here, the way the quote is
phrased make me suspect that he is unaware of the simple fact that USA
have not lead the Free World since at least before its government
&lt;a href=&quot;https://en.wikipedia.org/wiki/Maher_Arar&quot;&gt;kidnapped a
completely innocent Canadian citizen in transit on his way home to
Canada via John F. Kennedy International Airport in September 2002 and
sent him to be tortured in Syria for a year&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;USA might be running ahead, but the path they are taking is not the
one taken by any Free World.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Facebooks ability to sell your personal information is the real Cambridge Analytica scandal</title>
                <link>http://people.skolelinux.org/pere/blog/Facebooks_ability_to_sell_your_personal_information_is_the_real_Cambridge_Analytica_scandal.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Facebooks_ability_to_sell_your_personal_information_is_the_real_Cambridge_Analytica_scandal.html</guid>
                <pubDate>Wed, 21 Mar 2018 16:30:00 +0100</pubDate>
                <description>&lt;p&gt;So, Cambridge Analytica is getting some well deserved criticism for
(mis)using information it got from Facebook about 50 million people,
mostly in the USA.  What I find a bit surprising, is how little
criticism Facebook is getting for handing the information over to
Cambridge Analytica and others in the first place.  And what about the
people handing their private and personal information to Facebook?
And last, but not least, what about the government offices who are
handing information about the visitors of their web pages to Facebook?
No-one who looked at the terms of use of Facebook should be surprised
that information about peoples interests, political views, personal
lifes and whereabouts would be sold by Facebook.&lt;/p&gt;

&lt;p&gt;What I find to be the real scandal is the fact that Facebook is
selling your personal information, not that one of the buyers used it
in a way Facebook did not approve when exposed.  It is well known that
Facebook is selling out their users privacy, but a scandal
nevertheless.  Of course the information provided to them by Facebook
would be misused by one of the parties given access to personal
information about the millions of Facebook users.  Collected
information will be misused sooner or later.  The only way to avoid
such misuse, is to not collect the information in the first place.  If
you do not want Facebook to hand out information about yourself for
the use and misuse of its customers, do not give Facebook the
information.&lt;/p&gt;

&lt;p&gt;Personally, I would recommend to completely remove your Facebook
account, and take back some control of your personal information.
&lt;a href=&quot;https://www.theguardian.com/technology/2018/mar/19/how-to-protect-your-facebook-privacy-or-delete-yourself-completely&quot;&gt;According
to The Guardian&lt;/a&gt;, it is a bit hard to find out how to request
account removal (and not just &#39;disabling&#39;).  You need to
&lt;a href=&quot;https://www.facebook.com/help/224562897555674?helpref=faq_content&quot;&gt;visit
a specific Facebook page&lt;/a&gt; and click on &#39;let us know&#39; on that page
to get to &lt;a href=&quot;https://www.facebook.com/help/delete_account&quot;&gt;the
real account deletion screen&lt;/a&gt;.  Perhaps something to consider?  I
would not trust the information to really be deleted (who knows,
perhaps NSA, GCHQ and FRA already got a copy), but it might reduce the
exposure a bit.&lt;/p&gt;

&lt;p&gt;If you want to learn more about the capabilities of Cambridge
Analytica, I recommend to see the video recording of the one hour talk
Paul-Olivier Dehaye gave to &lt;a href=&quot;&quot;&gt;NUUG&lt;/a&gt; last april about
&lt;a href=&quot;https://www.nuug.no/aktiviteter/20170404-big-data-psychometric/&quot;&gt;
Data collection, psychometric profiling and their impact on
politics&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;And if you want to communicate with your friends and loved ones,
use some end-to-end encrypted method like
&lt;a href=&quot;https://www.signal.org/&quot;&gt;Signal&lt;/a&gt; or
&lt;a href=&quot;https://ring.cx/&quot;&gt;Ring&lt;/a&gt;, and stop sharing your private
messages with strangers like Facebook and Google.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First rough draft Norwegian and Spanish edition of the book Made with Creative Commons</title>
                <link>http://people.skolelinux.org/pere/blog/First_rough_draft_Norwegian_and_Spanish_edition_of_the_book_Made_with_Creative_Commons.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_rough_draft_Norwegian_and_Spanish_edition_of_the_book_Made_with_Creative_Commons.html</guid>
                <pubDate>Tue, 13 Mar 2018 13:00:00 +0100</pubDate>
                <description>&lt;p&gt;I am working on publishing yet another book related to Creative
Commons.  This time it is a book filled with interviews and histories
from those around the globe making a living using Creative
Commons.&lt;/p&gt;

&lt;p&gt;Yesterday, after many months of hard work by several volunteer
translators, the first draft of a Norwegian Bokmål edition of the book
&lt;a href=&quot;https://madewith.cc&quot;&gt;Made with Creative Commons from 2017&lt;/a&gt;
was complete.  The Spanish translation is also complete, while the
Dutch, Polish, German and Ukraine edition need a lot of work.  Get in
touch if you want to help make those happen, or would like to
translate into your mother tongue.&lt;/p&gt;

&lt;p&gt;The whole book project started when
&lt;a href=&quot;http://gwolf.org/node/4102&quot;&gt;Gunnar Wolf announced&lt;/a&gt; that he
was going to make a Spanish edition of the book.  I noticed, and
offered some input on how to make a book, based on my experience with
translating the
&lt;a href=&quot;https://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html&quot;&gt;Free
Culture&lt;/a&gt; and
&lt;a href=&quot;https://debian-handbook.info/get/#norwegian&quot;&gt;The Debian
Administrator&#39;s Handbook&lt;/a&gt; books to Norwegian Bokmål.  To make a
long story short, we ended up working on a Bokmål edition, and now the
first rough translation is complete, thanks to the hard work of
Ole-Erik Yrvin, Ingrid Yrvin, Allan Nordhøy and myself.  The first
proof reading is almost done, and only the second and third proof
reading remains.  We will also need to translate the 14 figures and
create a book cover.  Once it is done we will publish the book on
paper, as well as in PDF, ePub and possibly Mobi formats.&lt;/p&gt;

&lt;p&gt;The book itself originates as a manuscript on Google Docs, is
downloaded as ODT from there and converted to Markdown using pandoc.
The Markdown is modified by a script before is converted to DocBook
using pandoc.  The DocBook is modified again using a script before it
is used to create a Gettext POT file for translators.  The translated
PO file is then combined with the earlier mentioned DocBook file to
create a translated DocBook file, which finally is given to dblatex to
create the final PDF.  The end result is a set of editions of the
manuscript, one English and one for each of the translations.&lt;/p&gt;

&lt;p&gt;The translation is conducted using
&lt;a href=&quot;https://hosted.weblate.org/projects/madewithcc/translation/&quot;&gt;the
Weblate web based translation system&lt;/a&gt;.  Please have a look there
and get in touch if you would like to help out with proof
reading. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian used in the subway info screens in Oslo, Norway</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_used_in_the_subway_info_screens_in_Oslo__Norway.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_used_in_the_subway_info_screens_in_Oslo__Norway.html</guid>
                <pubDate>Fri, 2 Mar 2018 13:10:00 +0100</pubDate>
                <description>&lt;p&gt;Today I was pleasantly surprised to discover my operating system of
choice, Debian, was used in the info screens on the subway stations.
While passing Nydalen subway station in Oslo, Norway, I discovered the
info screen booting with some text scrolling.  I was not quick enough
with my camera to be able to record a video of the scrolling boot
screen, but I did get a photo from when the boot got stuck with a
corrupt file system:

&lt;p align=&quot;center&quot;&gt;&lt;a href=&quot;http://people.skolelinux.org/pere/blog/images/2018-03-02-ruter-debian-lenny.jpeg&quot;&gt;&lt;img align=&quot;center&quot; width=&quot;40%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2018-03-02-ruter-debian-lenny.jpeg&quot; alt=&quot;[photo of subway info screen]&quot;&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;While I am happy to see Debian used more places, some details of the
content on the screen worries me.&lt;/p&gt;

&lt;p&gt;The image show the version booting is &#39;Debian GNU/Linux lenny/sid&#39;,
indicating that this is based on code taken from Debian Unstable/Sid
after Debian Etch (version 4) was released 2007-04-08 and before
Debian Lenny (version 5) was released 2009-02-14.  Since Lenny Debian
has released version 6 (Squeeze) 2011-02-06, 7 (Wheezy) 2013-05-04, 8
(Jessie) 2015-04-25 and 9 (Stretch) 2017-06-15, according to
&lt;a href=&quot;https://en.wikipedia.org/wiki/Debian_version_history&quot;&gt;a Debian
version history on Wikpedia&lt;/a&gt;.  This mean the system is running
around 10 year old code, with no security fixes from the vendor for
many years.&lt;/p&gt;

&lt;p&gt;This is not the first time I discover the Oslo subway company,
Ruter, running outdated software.  In 2012,
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Er_billettautomatene_til_kollektivtrafikken_i_Oslo_uten_sikkerhetsoppdateringer_.html&quot;&gt;I
discovered the ticket vending machines were running Windows 2000&lt;/a&gt;,
and this was
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Fortsatt_ingen_sikkerhetsoppdateringer_for_billettautomatene_til_kollektivtrafikken_i_Oslo_.html&quot;&gt;still
the case in 2016&lt;/a&gt;.  Given the response from the responsible people
in 2016, I would assume the machines are still running unpatched
Windows 2000.  Thus, an unpatched Debian setup come as no surprise.&lt;/p&gt;

&lt;p&gt;The photo is made available under the license terms
&lt;a href=&quot;http://creativecommons.org/licenses/by/4.0/&quot;&gt;Creative Commons
4.0 Attribution International (CC BY 4.0)&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The SysVinit upstream project just migrated to git</title>
                <link>http://people.skolelinux.org/pere/blog/The_SysVinit_upstream_project_just_migrated_to_git.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_SysVinit_upstream_project_just_migrated_to_git.html</guid>
                <pubDate>Sun, 18 Feb 2018 09:20:00 +0100</pubDate>
                <description>&lt;p&gt;Surprising as it might sound, there are still computers using the
traditional Sys V init system, and there probably will be until
systemd start working on Hurd and FreeBSD.
&lt;a href=&quot;https://savannah.nongnu.org/projects/sysvinit&quot;&gt;The upstream
project still exist&lt;/a&gt;, though, and up until today, the upstream
source was available from Savannah via subversion.  I am happy to
report that this just changed.&lt;/p&gt;

&lt;p&gt;The upstream source is now in Git, and consist of three
repositories:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;http://git.savannah.nongnu.org/cgit/sysvinit.git&quot;&gt;sysvinit&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://git.savannah.nongnu.org/cgit/sysvinit/insserv.git&quot;&gt;insserv&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://git.savannah.nongnu.org/cgit/sysvinit/startpar.git&quot;&gt;startpar&lt;/a&gt;&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;I do not really spend much time on the project these days, and I
has mostly retired, but found it best to migrate the source to a good
version control system to help those willing to move it forward.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Using VLC to stream bittorrent sources</title>
                <link>http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html</guid>
                <pubDate>Wed, 14 Feb 2018 08:00:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago, a new major version of
&lt;a href=&quot;https://www.videolan.org/&quot;&gt;VLC&lt;/a&gt; was announced, and I
decided to check out if it now supported streaming over
&lt;a href=&quot;http://bittorrent.org/&quot;&gt;bittorrent&lt;/a&gt; and
&lt;a href=&quot;https://webtorrent.io&quot;&gt;webtorrent&lt;/a&gt;.  Bittorrent is one of
the most efficient ways to distribute large files on the Internet, and
Webtorrent is a variant of Bittorrent using
&lt;a href=&quot;https://webrtc.org&quot;&gt;WebRTC&lt;/a&gt; as its transport channel,
allowing web pages to stream and share files using the same technique.
The network protocols are similar but not identical, so a client
supporting one of them can not talk to a client supporting the other.
I was a bit surprised with what I discovered when I started to look.
Looking at
&lt;a href=&quot;https://www.videolan.org/vlc/releases/3.0.0.html&quot;&gt;the release
notes&lt;/a&gt; did not help answering this question, so I started searching
the web.  I found several news articles from 2013, most of them
tracing the news from Torrentfreak
(&quot;&lt;a href=https://torrentfreak.com/open-source-giant-vlc-mulls-bittorrent-support-130211/&quot;&gt;Open
Source Giant VLC Mulls BitTorrent Streaming Support&lt;/a&gt;&quot;), about a
initiative to pay someone to create a VLC patch for bittorrent
support.  To figure out what happend with this initiative, I headed
over to the #videolan IRC channel and asked if there were some bug or
feature request tickets tracking such feature.  I got an answer from
lead developer Jean-Babtiste Kempf, telling me that there was a patch
but neither he nor anyone else knew where it was.  So I searched a bit
more, and came across an independent
&lt;a href=&quot;https://github.com/johang/vlc-bittorrent&quot;&gt;VLC plugin to add
bittorrent support&lt;/a&gt;, created by Johan Gunnarsson in 2016/2017.
Again according to Jean-Babtiste, this is not the patch he was talking
about.&lt;/p&gt;

&lt;p&gt;Anyway, to test the plugin, I made a working Debian package from
the git repository, with some modifications.  After installing this
package, I could stream videos from
&lt;a href=&quot;https://www.archive.org/&quot;&gt;The Internet Archive&lt;/a&gt; using VLC
commands like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
vlc https://archive.org/download/LoveNest/LoveNest_archive.torrent
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The plugin is supposed to handle magnet links too, but since The
Internet Archive do not have magnet links and I did not want to spend
time tracking down another source, I have not tested it.  It can take
quite a while before the video start playing without any indication of
what is going on from VLC.  It took 10-20 seconds when I measured it.
Some times the plugin seem unable to find the correct video file to
play, and show the metadata XML file name in the VLC status line.  I
have no idea why.&lt;/p&gt;

&lt;p&gt;I have created a &lt;a href=&quot;https://bugs.debian.org/890360&quot;&gt;request for
a new package in Debian (RFP)&lt;/a&gt; and
&lt;a href=&quot;https://github.com/johang/vlc-bittorrent/issues/1&quot;&gt;asked if
the upstream author is willing to help make this happen&lt;/a&gt;.  Now we
wait to see what come out of this.  I do not want to maintain a
package that is not maintained upstream, nor do I really have time to
maintain more packages myself, so I might leave it at this.  But I
really hope someone step up to do the packaging, and hope upstream is
still maintaining the source.  If you want to help, please update the
RFP request or the upstream issue.&lt;/p&gt;

&lt;p&gt;I have not found any traces of webtorrent support for VLC.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Version 3.1 of Cura, the 3D print slicer, is now in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Version_3_1_of_Cura__the_3D_print_slicer__is_now_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Version_3_1_of_Cura__the_3D_print_slicer__is_now_in_Debian.html</guid>
                <pubDate>Tue, 13 Feb 2018 06:20:00 +0100</pubDate>
                <description>&lt;p&gt;A new version of the
&lt;a href=&quot;https://tracker.debian.org/pkg/cura&quot;&gt;3D printer slicer
software Cura&lt;/a&gt;, version 3.1.0, is now available in Debian Testing
(aka Buster) and Debian Unstable (aka Sid).  I hope you find it
useful.  It was uploaded the last few days, and the last update will
enter testing tomorrow.  See the
&lt;a href=&quot;https://ultimaker.com/en/products/cura-software/release-notes&quot;&gt;release
notes&lt;/a&gt; for the list of bug fixes and new features.  Version 3.2
was announced 6 days ago.  We will try to get it into Debian as
well.&lt;/p&gt;

&lt;p&gt;More information related to 3D printing is available on the
&lt;a href=&quot;https://wiki.debian.org/3DPrinting&quot;&gt;3D printing&lt;/a&gt; and
&lt;a href=&quot;https://wiki.debian.org/3D-printer&quot;&gt;3D printer&lt;/a&gt; wiki pages
in Debian.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How hard can æ, ø and å be?</title>
                <link>http://people.skolelinux.org/pere/blog/How_hard_can______and___be_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_hard_can______and___be_.html</guid>
                <pubDate>Sun, 11 Feb 2018 17:10:00 +0100</pubDate>
                <description>&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2018-02-11-peppes-unicode.jpeg&quot; align=&quot;right&quot;/&gt;

&lt;p&gt;We write 2018, and it is 30 years since Unicode was introduced.
Most of us in Norway have come to expect the use of our alphabet to
just work with any computer system.  But it is apparently beyond reach
of the computers printing recites at a restaurant.  Recently I visited
a Peppes pizza resturant, and noticed a few details on the recite.
Notice how &#39;ø&#39; and &#39;å&#39; are replaced with strange symbols in
&#39;Servitør&#39;, &#39;Å BETALE&#39;, &#39;Beløp pr. gjest&#39;, &#39;Takk for besøket.&#39; and &#39;Vi
gleder oss til å se deg igjen&#39;.&lt;/p&gt;

&lt;p&gt;I would say that this state is passed sad and over in embarrassing.&lt;/p&gt;

&lt;p&gt;I removed personal and private information to be nice.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Legal to share more than 11,000 movies listed on IMDB?</title>
                <link>http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_11_000_movies_listed_on_IMDB_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_11_000_movies_listed_on_IMDB_.html</guid>
                <pubDate>Sun, 7 Jan 2018 23:30:00 +0100</pubDate>
                <description>&lt;p&gt;I&#39;ve continued to track down list of movies that are legal to
distribute on the Internet, and identified more than 11,000 title IDs
in The Internet Movie Database (IMDB) so far.  Most of them (57%) are
feature films from USA published before 1923.  I&#39;ve also tracked down
more than 24,000 movies I have not yet been able to map to IMDB title
ID, so the real number could be a lot higher.  According to the front
web page for &lt;a href=&quot;https://retrofilmvault.com/&quot;&gt;Retro Film
Vault&lt;/A&gt;, there are 44,000 public domain films, so I guess there are
still some left to identify.&lt;/p&gt;

&lt;p&gt;The complete data set is available from
&lt;a href=&quot;https://github.com/petterreinholdtsen/public-domain-free-imdb&quot;&gt;a
public git repository&lt;/a&gt;, including the scripts used to create it.
Most of the data is collected using web scraping, for example from the
&quot;product catalog&quot; of companies selling copies of public domain movies,
but any source I find believable is used.  I&#39;ve so far had to throw
out three sources because I did not trust the public domain status of
the movies listed.&lt;/p&gt;

&lt;p&gt;Anyway, this is the summary of the 28 collected data sources so
far:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
 2352 entries (   66 unique) with and 15983 without IMDB title ID in free-movies-archive-org-search.json
 2302 entries (  120 unique) with and     0 without IMDB title ID in free-movies-archive-org-wikidata.json
  195 entries (   63 unique) with and   200 without IMDB title ID in free-movies-cinemovies.json
   89 entries (   52 unique) with and    38 without IMDB title ID in free-movies-creative-commons.json
  344 entries (   28 unique) with and   655 without IMDB title ID in free-movies-fesfilm.json
  668 entries (  209 unique) with and  1064 without IMDB title ID in free-movies-filmchest-com.json
  830 entries (   21 unique) with and     0 without IMDB title ID in free-movies-icheckmovies-archive-mochard.json
   19 entries (   19 unique) with and     0 without IMDB title ID in free-movies-imdb-c-expired-gb.json
 6822 entries ( 6669 unique) with and     0 without IMDB title ID in free-movies-imdb-c-expired-us.json
  137 entries (    0 unique) with and     0 without IMDB title ID in free-movies-imdb-externlist.json
 1205 entries (   57 unique) with and     0 without IMDB title ID in free-movies-imdb-pd.json
   84 entries (   20 unique) with and   167 without IMDB title ID in free-movies-infodigi-pd.json
  158 entries (  135 unique) with and     0 without IMDB title ID in free-movies-letterboxd-looney-tunes.json
  113 entries (    4 unique) with and     0 without IMDB title ID in free-movies-letterboxd-pd.json
  182 entries (  100 unique) with and     0 without IMDB title ID in free-movies-letterboxd-silent.json
  229 entries (   87 unique) with and     1 without IMDB title ID in free-movies-manual.json
   44 entries (    2 unique) with and    64 without IMDB title ID in free-movies-openflix.json
  291 entries (   33 unique) with and   474 without IMDB title ID in free-movies-profilms-pd.json
  211 entries (    7 unique) with and     0 without IMDB title ID in free-movies-publicdomainmovies-info.json
 1232 entries (   57 unique) with and  1875 without IMDB title ID in free-movies-publicdomainmovies-net.json
   46 entries (   13 unique) with and    81 without IMDB title ID in free-movies-publicdomainreview.json
  698 entries (   64 unique) with and   118 without IMDB title ID in free-movies-publicdomaintorrents.json
 1758 entries (  882 unique) with and  3786 without IMDB title ID in free-movies-retrofilmvault.json
   16 entries (    0 unique) with and     0 without IMDB title ID in free-movies-thehillproductions.json
   63 entries (   16 unique) with and   141 without IMDB title ID in free-movies-vodo.json
11583 unique IMDB title IDs in total, 8724 only in one list, 24647 without IMDB title ID
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt; I keep finding more data sources.  I found the cinemovies source
just a few days ago, and as you can see from the summary, it extended
my list with 63 movies.  Check out the mklist-* scripts in the git
repository if you are curious how the lists are created.  Many of the
titles are extracted using searches on IMDB, where I look for the
title and year, and accept search results with only one movie listed
if the year matches.  This allow me to automatically use many lists of
movies without IMDB title ID references at the cost of increasing the
risk of wrongly identify a IMDB title ID as public domain.  So far my
random manual checks have indicated that the method is solid, but I
really wish all lists of public domain movies would include unique
movie identifier like the IMDB title ID.  It would make the job of
counting movies in the public domain a lot easier.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Cura, the nice 3D print slicer, is now in Debian Unstable</title>
                <link>http://people.skolelinux.org/pere/blog/Cura__the_nice_3D_print_slicer__is_now_in_Debian_Unstable.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Cura__the_nice_3D_print_slicer__is_now_in_Debian_Unstable.html</guid>
                <pubDate>Sun, 17 Dec 2017 07:00:00 +0100</pubDate>
                <description>&lt;p&gt;After several months of working and waiting, I am happy to report
that the nice and user friendly 3D printer slicer software Cura just
entered Debian Unstable.  It consist of five packages,
&lt;a href=&quot;https://tracker.debian.org/pkg/cura&quot;&gt;cura&lt;/a&gt;,
&lt;a href=&quot;https://tracker.debian.org/pkg/cura-engine&quot;&gt;cura-engine&lt;/a&gt;,
&lt;a href=&quot;https://tracker.debian.org/pkg/libarcus&quot;&gt;libarcus&lt;/a&gt;,
&lt;a href=&quot;https://tracker.debian.org/pkg/fdm-materials&quot;&gt;fdm-materials&lt;/a&gt;,
&lt;a href=&quot;https://tracker.debian.org/pkg/libsavitar&quot;&gt;libsavitar&lt;/a&gt; and
&lt;a href=&quot;https://tracker.debian.org/pkg/uranium&quot;&gt;uranium&lt;/a&gt;.  The last
two, uranium and cura, entered Unstable yesterday.  This should make
it easier for Debian users to print on at least the Ultimaker class of
3D printers.  My nearest 3D printer is an Ultimaker 2+, so it will
make life easier for at least me. :)&lt;/p&gt;

&lt;p&gt;The work to make this happen was done by Gregor Riepl, and I was
happy to assist him in sponsoring the packages.  With the introduction
of Cura, Debian is up to three 3D printer slicers at your service,
Cura, Slic3r and Slic3r Prusa.  If you own or have access to a 3D
printer, give it a go. :)&lt;/p&gt;

&lt;p&gt;The 3D printer software is maintained by the 3D printer Debian
team, flocking together on the
&lt;a href=&quot;http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/3dprinter-general&quot;&gt;3dprinter-general&lt;/a&gt;
mailing list and the
&lt;a href=&quot;irc://irc.debian.org/#debian-3dprinting&quot;&gt;#debian-3dprinting&lt;/a&gt;
IRC channel.&lt;/p&gt;

&lt;p&gt;The next step for Cura in Debian is to update the cura package to
version 3.0.3 and then update the entire set of packages to version
3.1.0 which showed up the last few days.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Idea for finding all public domain movies in the USA</title>
                <link>http://people.skolelinux.org/pere/blog/Idea_for_finding_all_public_domain_movies_in_the_USA.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Idea_for_finding_all_public_domain_movies_in_the_USA.html</guid>
                <pubDate>Wed, 13 Dec 2017 10:15:00 +0100</pubDate>
                <description>&lt;p&gt;While looking at
&lt;a href=&quot;http://onlinebooks.library.upenn.edu/cce/&quot;&gt;the scanned copies
for the copyright renewal entries for movies published in the USA&lt;/a&gt;,
an idea occurred to me.  The number of renewals are so few per year, it
should be fairly quick to transcribe them all and add references to
the corresponding IMDB title ID.  This would give the (presumably)
complete list of movies published 28 years earlier that did _not_
enter the public domain for the transcribed year.  By fetching the
list of USA movies published 28 years earlier and subtract the movies
with renewals, we should be left with movies registered in IMDB that
are now in the public domain.  For the year 1955 (which is the one I
have looked at the most), the total number of pages to transcribe is
21.  For the 28 years from 1950 to 1978, it should be in the range
500-600 pages.  It is just a few days of work, and spread among a
small group of people it should be doable in a few weeks of spare
time.&lt;/p&gt;

&lt;p&gt;A typical copyright renewal entry look like this (the first one
listed for 1955):&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
  ADAM AND EVIL, a photoplay in seven reels by Metro-Goldwyn-Mayer
  Distribution Corp. (c) 17Aug27; L24293. Loew&#39;s Incorporated (PWH);
  10Jun55; R151558.
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The movie title as well as registration and renewal dates are easy
enough to locate by a program (split on first comma and look for
DDmmmYY).  The rest of the text is not required to find the movie in
IMDB, but is useful to confirm the correct movie is found.  I am not
quite sure what the L and R numbers mean, but suspect they are
reference numbers into the archive of the US Copyright Office.&lt;/p&gt;

&lt;p&gt;Tracking down the equivalent IMDB title ID is probably going to be
a manual task, but given the year it is fairly easy to search for the
movie title using for example
&lt;a href=&quot;http://www.imdb.com/find?q=adam+and+evil+1927&amp;s=all&quot;&gt;http://www.imdb.com/find?q=adam+and+evil+1927&amp;s=all&lt;/a&gt;.
Using this search, I find that the equivalent IMDB title ID for the
first renewal entry from 1955 is
&lt;a href=&quot;http://www.imdb.com/title/tt0017588/&quot;&gt;http://www.imdb.com/title/tt0017588/&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I suspect the best way to do this would be to make a specialised
web service to make it easy for contributors to transcribe and track
down IMDB title IDs.  In the web service, once a entry is transcribed,
the title and year could be extracted from the text, a search in IMDB
conducted for the user to pick the equivalent IMDB title ID right
away.  By spreading out the work among volunteers, it would also be
possible to make at least two persons transcribe the same entries to
be able to discover any typos introduced.  But I will need help to
make this happen, as I lack the spare time to do all of this on my
own.  If you would like to help, please get in touch.  Perhaps you can
draft a web service for crowd sourcing the task?&lt;/p&gt;

&lt;p&gt;Note, Project Gutenberg already have some
&lt;a href=&quot;http://www.gutenberg.org/ebooks/search/?query=copyright+office+renewals&quot;&gt;transcribed
copies of the US Copyright Office renewal protocols&lt;/a&gt;, but I have
not been able to find any film renewals there, so I suspect they only
have copies of renewal for written works.  I have not been able to find
any transcribed versions of movie renewals so far.  Perhaps they exist
somewhere?&lt;/p&gt;

&lt;p&gt;I would love to figure out methods for finding all the public
domain works in other countries too, but it is a lot harder.  At least
for Norway and Great Britain, such work involve tracking down the
people involved in making the movie and figuring out when they died.
It is hard enough to figure out who was part of making a movie, but I
do not know how to automate such procedure without a registry of every
person involved in making movies and their death year.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Is the short movie «Empty Socks» from 1927 in the public domain or not?</title>
                <link>http://people.skolelinux.org/pere/blog/Is_the_short_movie__Empty_Socks__from_1927_in_the_public_domain_or_not_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Is_the_short_movie__Empty_Socks__from_1927_in_the_public_domain_or_not_.html</guid>
                <pubDate>Tue, 5 Dec 2017 12:30:00 +0100</pubDate>
                <description>&lt;p&gt;Three years ago, a presumed lost animation film,
&lt;a href=&quot;https://en.wikipedia.org/wiki/Empty_Socks&quot;&gt;Empty Socks from
1927&lt;/a&gt;, was discovered in the Norwegian National Library.  At the
time it was discovered, it was generally assumed to be copyrighted by
The Walt Disney Company, and I blogged about
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Opphavsretts_status_for__Empty_Socks__fra_1927_.html&quot;&gt;my
reasoning to conclude&lt;/a&gt; that it would would enter the Norwegian
equivalent of the public domain in 2053, based on my understanding of
Norwegian Copyright Law.  But a few days ago, I came across
&lt;a href=&quot;http://www.toonzone.net/forums/threads/exposed-disneys-repurchase-of-oswald-the-rabbit-a-sham.4792291/&quot;&gt;a
blog post claiming the movie was already in the public domain&lt;/a&gt;, at
least in USA.  The reasoning is as follows: The film was released in
November or Desember 1927 (sources disagree), and presumably
registered its copyright that year.  At that time, right holders of
movies registered by the copyright office received government
protection for there work for 28 years.  After 28 years, the copyright
had to be renewed if the wanted the government to protect it further.
The blog post I found claim such renewal did not happen for this
movie, and thus it entered the public domain in 1956.  Yet someone
claim the copyright was renewed and the movie is still copyright
protected.  Can anyone help me to figure out which claim is correct?
I have not been able to find Empty Socks in Catalog of copyright
entries.  Ser.3 pt.12-13 v.9-12 1955-1958 Motion Pictures
&lt;a href=&quot;http://onlinebooks.library.upenn.edu/cce/1955r.html#film&quot;&gt;available
from the University of Pennsylvania&lt;/a&gt;, neither in
&lt;a href=&quot;https://babel.hathitrust.org/cgi/pt?id=mdp.39015084451130;page=root;view=image;size=100;seq=83;num=45&quot;&gt;page
45 for the first half of 1955&lt;/a&gt;, nor in
&lt;a href=&quot;https://babel.hathitrust.org/cgi/pt?id=mdp.39015084451130;page=root;view=image;size=100;seq=175;num=119&quot;&gt;page
119 for the second half of 1955&lt;/a&gt;.  It is of course possible that
the renewal entry was left out of the printed catalog by mistake.  Is
there some way to rule out this possibility?  Please help, and update
the wikipedia page with your findings.

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Metadata proposal for movies on the Internet Archive</title>
                <link>http://people.skolelinux.org/pere/blog/Metadata_proposal_for_movies_on_the_Internet_Archive.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Metadata_proposal_for_movies_on_the_Internet_Archive.html</guid>
                <pubDate>Tue, 28 Nov 2017 12:00:00 +0100</pubDate>
                <description>&lt;p&gt;It would be easier to locate the movie you want to watch in
&lt;a href=&quot;https://www.archive.org/&quot;&gt;the Internet Archive&lt;/a&gt;, if the
metadata about each movie was more complete and accurate.  In the
archiving community, a well known saying state that good metadata is a
love letter to the future.  The metadata in the Internet Archive could
use a face lift for the future to love us back.  Here is a proposal
for a small improvement that would make the metadata more useful
today.  I&#39;ve been unable to find any document describing the various
standard fields available when uploading videos to the archive, so
this proposal is based on my best quess and searching through several
of the existing movies.&lt;/p&gt;

&lt;p&gt;I have a few use cases in mind.  First of all, I would like to be
able to count the number of distinct movies in the Internet Archive,
without duplicates.  I would further like to identify the IMDB title
ID of the movies in the Internet Archive, to be able to look up a IMDB
title ID and know if I can fetch the video from there and share it
with my friends.&lt;/p&gt;

&lt;p&gt;Second, I would like the Butter data provider for The Internet
archive
(&lt;a href=&quot;https://github.com/butterproviders/butter-provider-archive&quot;&gt;available
from github&lt;/a&gt;), to list as many of the good movies as possible.  The
plugin currently do a search in the archive with the following
parameters:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
collection:moviesandfilms
AND NOT collection:movie_trailers
AND -mediatype:collection
AND format:&quot;Archive BitTorrent&quot;
AND year
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Most of the cool movies that fail to show up in Butter do so
because the &#39;year&#39; field is missing.  The &#39;year&#39; field is populated by
the year part from the &#39;date&#39; field, and should be when the movie was
released (date or year).  Two such examples are
&lt;a href=&quot;https://archive.org/details/SidneyOlcottsBen-hur1905&quot;&gt;Ben Hur
from 1905&lt;/a&gt; and
&lt;a href=&quot;https://archive.org/details/Caminandes2GranDillama&quot;&gt;Caminandes
2: Gran Dillama from 2013&lt;/a&gt;, where the year metadata field is
missing.&lt;/p&gt;

So, my proposal is simply, for every movie in The Internet Archive
where an IMDB title ID exist, please fill in these metadata fields
(note, they can be updated also long after the video was uploaded, but
as far as I can tell, only by the uploader):

&lt;dl&gt;

&lt;dt&gt;mediatype&lt;/dt&gt;
&lt;dd&gt;Should be &#39;movie&#39; for movies.&lt;/dd&gt;

&lt;dt&gt;collection&lt;/dt&gt;
&lt;dd&gt;Should contain &#39;moviesandfilms&#39;.&lt;/dd&gt;

&lt;dt&gt;title&lt;/dt&gt;
&lt;dd&gt;The title of the movie, without the publication year.&lt;/dd&gt;

&lt;dt&gt;date&lt;/dt&gt;
&lt;dd&gt;The data or year the movie was released.  This make the movie show
up in Butter, as well as make it possible to know the age of the
movie and is useful to figure out copyright status.&lt;/dd&gt;

&lt;dt&gt;director&lt;/dt&gt;
&lt;dd&gt;The director of the movie.  This make it easier to know if the
correct movie is found in movie databases.&lt;/dd&gt;

&lt;dt&gt;publisher&lt;/dt&gt;
&lt;dd&gt;The production company making the movie.  Also useful for
identifying the correct movie.&lt;/dd&gt;

&lt;dt&gt;links&lt;/dt&gt;

&lt;dd&gt;Add a link to the IMDB title page, for example like this: &amp;lt;a
href=&quot;http://www.imdb.com/title/tt0028496/&quot;&amp;gt;Movie in
IMDB&amp;lt;/a&amp;gt;.  This make it easier to find duplicates and allow for
counting of number of unique movies in the Archive.  Other external
references, like to TMDB, could be added like this too.&lt;/dd&gt;

&lt;/dl&gt;

&lt;p&gt;I did consider proposing a Custom field for the IMDB title ID (for
example &#39;imdb_title_url&#39;, &#39;imdb_code&#39; or simply &#39;imdb&#39;, but suspect it
will be easier to simply place it in the links free text field.&lt;/p&gt;

&lt;p&gt;I created
&lt;a href=&quot;https://github.com/petterreinholdtsen/public-domain-free-imdb&quot;&gt;a
list of IMDB title IDs for several thousand movies in the Internet
Archive&lt;/a&gt;, but I also got a list of several thousand movies without
such IMDB title ID (and quite a few duplicates).  It would be great if
this data set could be integrated into the Internet Archive metadata
to be available for everyone in the future, but with the current
policy of leaving metadata editing to the uploaders, it will take a
while before this happen.  If you have uploaded movies into the
Internet Archive, you can help.  Please consider following my proposal
above for your movies, to ensure that movie is properly
counted. :)&lt;/p&gt;

&lt;p&gt;The list is mostly generated using wikidata, which based on
Wikipedia articles make it possible to link between IMDB and movies in
the Internet Archive.  But there are lots of movies without a
Wikipedia article, and some movies where only a collection page exist
(like for &lt;a href=&quot;https://en.wikipedia.org/wiki/Caminandes&quot;&gt;the
Caminandes example above&lt;/a&gt;, where there are three movies but only
one Wikidata entry).&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Legal to share more than 3000 movies listed on IMDB?</title>
                <link>http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_3000_movies_listed_on_IMDB_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_3000_movies_listed_on_IMDB_.html</guid>
                <pubDate>Sat, 18 Nov 2017 21:20:00 +0100</pubDate>
                <description>&lt;p&gt;A month ago, I blogged about my work to
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html&quot;&gt;automatically
check the copyright status of IMDB entries&lt;/a&gt;, and try to count the
number of movies listed in IMDB that is legal to distribute on the
Internet.  I have continued to look for good data sources, and
identified a few more.  The code used to extract information from
various data sources is available in
&lt;a href=&quot;https://github.com/petterreinholdtsen/public-domain-free-imdb&quot;&gt;a
git repository&lt;/a&gt;, currently available from github.&lt;/p&gt;

&lt;p&gt;So far I have identified 3186 unique IMDB title IDs.  To gain
better understanding of the structure of the data set, I created a
histogram of the year associated with each movie (typically release
year).  It is interesting to notice where the peaks and dips in the
graph are located.  I wonder why they are placed there.  I suspect
World War II caused the dip around 1940, but what caused the peak
around 2010?&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2017-11-18-verk-i-det-fri-filmer.png&quot; /&gt;&lt;/p&gt;

&lt;p&gt;I&#39;ve so far identified ten sources for IMDB title IDs for movies in
the public domain or with a free license.  This is the statistics
reported when running &#39;make stats&#39; in the git repository:&lt;/p&gt;

&lt;pre&gt;
  249 entries (    6 unique) with and   288 without IMDB title ID in free-movies-archive-org-butter.json
 2301 entries (  540 unique) with and     0 without IMDB title ID in free-movies-archive-org-wikidata.json
  830 entries (   29 unique) with and     0 without IMDB title ID in free-movies-icheckmovies-archive-mochard.json
 2109 entries (  377 unique) with and     0 without IMDB title ID in free-movies-imdb-pd.json
  291 entries (  122 unique) with and     0 without IMDB title ID in free-movies-letterboxd-pd.json
  144 entries (  135 unique) with and     0 without IMDB title ID in free-movies-manual.json
  350 entries (    1 unique) with and   801 without IMDB title ID in free-movies-publicdomainmovies.json
    4 entries (    0 unique) with and   124 without IMDB title ID in free-movies-publicdomainreview.json
  698 entries (  119 unique) with and   118 without IMDB title ID in free-movies-publicdomaintorrents.json
    8 entries (    8 unique) with and   196 without IMDB title ID in free-movies-vodo.json
 3186 unique IMDB title IDs in total
&lt;/pre&gt;

&lt;p&gt;The entries without IMDB title ID are candidates to increase the
data set, but might equally well be duplicates of entries already
listed with IMDB title ID in one of the other sources, or represent
movies that lack a IMDB title ID.  I&#39;ve seen examples of all these
situations when peeking at the entries without IMDB title ID.  Based
on these data sources, the lower bound for movies listed in IMDB that
are legal to distribute on the Internet is between 3186 and 4713.

&lt;p&gt;It would be great for improving the accuracy of this measurement,
if the various sources added IMDB title ID to their metadata.  I have
tried to reach the people behind the various sources to ask if they
are interested in doing this, without any replies so far.  Perhaps you
can help me get in touch with the people behind VODO, Public Domain
Torrents, Public Domain Movies and Public Domain Review to try to
convince them to add more metadata to their movie entries?&lt;/p&gt;

&lt;p&gt;Another way you could help is by adding pages to Wikipedia about
movies that are legal to distribute on the Internet.  If such page
exist and include a link to both IMDB and The Internet Archive, the
script used to generate free-movies-archive-org-wikidata.json should
pick up the mapping as soon as wikidata is updates.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Some notes on fault tolerant storage systems</title>
                <link>http://people.skolelinux.org/pere/blog/Some_notes_on_fault_tolerant_storage_systems.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Some_notes_on_fault_tolerant_storage_systems.html</guid>
                <pubDate>Wed, 1 Nov 2017 15:35:00 +0100</pubDate>
                <description>&lt;p&gt;If you care about how fault tolerant your storage is, you might
find these articles and papers interesting.  They have formed how I
think of when designing a storage system.&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;USENIX :login; &lt;a
href=&quot;https://www.usenix.org/publications/login/summer2017/ganesan&quot;&gt;Redundancy
Does Not Imply Fault Tolerance.  Analysis of Distributed Storage
Reactions to Single Errors and Corruptions&lt;/a&gt; by Aishwarya Ganesan,
Ramnatthan Alagappan, Andrea C. Arpaci-Dusseau, and Remzi
H. Arpaci-Dusseau&lt;/li&gt;

&lt;li&gt;ZDNet
&lt;a href=&quot;http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/&quot;&gt;Why
RAID 5 stops working in 2009&lt;/a&gt; by Robin Harris&lt;/li&gt;

&lt;li&gt;ZDNet
&lt;a href=&quot;http://www.zdnet.com/article/why-raid-6-stops-working-in-2019/&quot;&gt;Why
RAID 6 stops working in 2019&lt;/a&gt; by Robin Harris&lt;/li&gt;

&lt;li&gt;USENIX FAST&#39;07
&lt;a href=&quot;http://research.google.com/archive/disk_failures.pdf&quot;&gt;Failure
Trends in a Large Disk Drive Population&lt;/a&gt; by Eduardo Pinheiro,
Wolf-Dietrich Weber and Luiz André Barroso&lt;/li&gt;

&lt;li&gt;USENIX ;login: &lt;a
href=&quot;https://www.usenix.org/system/files/login/articles/hughes12-04.pdf&quot;&gt;Data
Integrity.  Finding Truth in a World of Guesses and Lies&lt;/a&gt; by Doug
Hughes&lt;/li&gt;

&lt;li&gt;USENIX FAST&#39;08
&lt;a href=&quot;https://www.usenix.org/events/fast08/tech/full_papers/bairavasundaram/bairavasundaram_html/&quot;&gt;An
Analysis of Data Corruption in the Storage Stack&lt;/a&gt; by
L. N. Bairavasundaram, G. R. Goodson, B. Schroeder, A. C.
Arpaci-Dusseau, and R. H. Arpaci-Dusseau&lt;/li&gt;

&lt;li&gt;USENIX FAST&#39;07 &lt;a
href=&quot;https://www.usenix.org/legacy/events/fast07/tech/schroeder/schroeder_html/&quot;&gt;Disk
failures in the real world: what does an MTTF of 1,000,000 hours mean
to you?&lt;/a&gt; by B. Schroeder and G. A. Gibson.&lt;/li&gt;

&lt;li&gt;USENIX ;login: &lt;a
href=&quot;https://www.usenix.org/events/fast08/tech/full_papers/jiang/jiang_html/&quot;&gt;Are
Disks the Dominant Contributor for Storage Failures?  A Comprehensive
Study of Storage Subsystem Failure Characteristics&lt;/a&gt; by Weihang
Jiang, Chongfeng Hu, Yuanyuan Zhou, and Arkady Kanevsky&lt;/li&gt;

&lt;li&gt;SIGMETRICS 2007
&lt;a href=&quot;http://research.cs.wisc.edu/adsl/Publications/latent-sigmetrics07.pdf&quot;&gt;An
analysis of latent sector errors in disk drives&lt;/a&gt; by
L. N. Bairavasundaram, G. R. Goodson, S. Pasupathy, and J. Schindler&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;Several of these research papers are based on data collected from
hundred thousands or millions of disk, and their findings are eye
opening.  The short story is simply do not implicitly trust RAID or
redundant storage systems.  Details matter.  And unfortunately there
are few options on Linux addressing all the identified issues.  Both
ZFS and Btrfs are doing a fairly good job, but have legal and
practical issues on their own.  I wonder how cluster file systems like
Ceph do in this regard.  After all, there is an old saying, you know
you have a distributed system when the crash of a computer you have
never heard of stops you from getting any work done.  The same holds
true if fault tolerance do not work.&lt;/p&gt;

&lt;p&gt;Just remember, in the end, it do not matter how redundant, or how
fault tolerant your storage is, if you do not continuously monitor its
status to detect and replace failed disks.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Web services for writing academic LaTeX papers as a team</title>
                <link>http://people.skolelinux.org/pere/blog/Web_services_for_writing_academic_LaTeX_papers_as_a_team.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Web_services_for_writing_academic_LaTeX_papers_as_a_team.html</guid>
                <pubDate>Tue, 31 Oct 2017 21:00:00 +0100</pubDate>
                <description>&lt;p&gt;I was surprised today to learn that a friend in academia did not
know there are easily available web services available for writing
LaTeX documents as a team.  I thought it was common knowledge, but to
make sure at least my readers are aware of it, I would like to mention
these useful services for writing LaTeX documents.  Some of them even
provide a WYSIWYG editor to ease writing even further.&lt;/p&gt;

&lt;p&gt;There are two commercial services available,
&lt;a href=&quot;https://sharelatex.com&quot;&gt;ShareLaTeX&lt;/a&gt; and
&lt;a href=&quot;https://overleaf.com&quot;&gt;Overleaf&lt;/a&gt;.  They are very easy to
use.  Just start a new document, select which publisher to write for
(ie which LaTeX style to use), and start writing.  Note, these two
have announced their intention to join forces, so soon it will only be
one joint service.  I&#39;ve used both for different documents, and they
work just fine.  While
&lt;a href=&quot;https://github.com/sharelatex/sharelatex&quot;&gt;ShareLaTeX is free
software&lt;/a&gt;, while the latter is not.  According to &lt;a
href=&quot;https://www.overleaf.com/help/17-is-overleaf-open-source&quot;&gt;a
announcement from Overleaf&lt;/a&gt;, they plan to keep the ShareLaTeX code
base maintained as free software.&lt;/p&gt;

But these two are not the only alternatives.
&lt;a href=&quot;https://app.fiduswriter.org/&quot;&gt;Fidus Writer&lt;/a&gt; is another free
software solution with &lt;a href=&quot;https://github.com/fiduswriter&quot;&gt;the
source available on github&lt;/a&gt;.  I have not used it myself.  Several
others can be found on the nice
&lt;a href=&quot;https://alternativeto.net/software/sharelatex/&quot;&gt;alterntiveTo
web service&lt;/a&gt;.

&lt;p&gt;If you like Google Docs or Etherpad, but would like to write
documents in LaTeX, you should check out these services.  You can even
host your own, if you want to. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Locating IMDB IDs of movies in the Internet Archive using Wikidata</title>
                <link>http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html</guid>
                <pubDate>Wed, 25 Oct 2017 12:20:00 +0200</pubDate>
                <description>&lt;p&gt;Recently, I needed to automatically check the copyright status of a
set of &lt;a href=&quot;http://www.imdb.com/&quot;&gt;The Internet Movie database
(IMDB)&lt;/a&gt; entries, to figure out which one of the movies they refer
to can be freely distributed on the Internet.  This proved to be
harder than it sounds.  IMDB for sure list movies without any
copyright protection, where the copyright protection has expired or
where the movie is lisenced using a permissive license like one from
Creative Commons.  These are mixed with copyright protected movies,
and there seem to be no way to separate these classes of movies using
the information in IMDB.&lt;/p&gt;

&lt;p&gt;First I tried to look up entries manually in IMDB,
&lt;a href=&quot;https://www.wikipedia.org/&quot;&gt;Wikipedia&lt;/a&gt; and
&lt;a href=&quot;https://www.archive.org/&quot;&gt;The Internet Archive&lt;/a&gt;, to get a
feel how to do this.  It is hard to know for sure using these sources,
but it should be possible to be reasonable confident a movie is &quot;out
of copyright&quot; with a few hours work per movie.  As I needed to check
almost 20,000 entries, this approach was not sustainable.  I simply
can not work around the clock for about 6 years to check this data
set.&lt;/p&gt;

&lt;p&gt;I asked the people behind The Internet Archive if they could
introduce a new metadata field in their metadata XML for IMDB ID, but
was told that they leave it completely to the uploaders to update the
metadata.  Some of the metadata entries had IMDB links in the
description, but I found no way to download all metadata files in bulk
to locate those ones and put that approach aside.&lt;/p&gt;

&lt;p&gt;In the process I noticed several Wikipedia articles about movies
had links to both IMDB and The Internet Archive, and it occured to me
that I could use the Wikipedia RDF data set to locate entries with
both, to at least get a lower bound on the number of movies on The
Internet Archive with a IMDB ID.  This is useful based on the
assumption that movies distributed by The Internet Archive can be
legally distributed on the Internet.  With some help from the RDF
community (thank you DanC), I was able to come up with this query to
pass to &lt;a href=&quot;https://query.wikidata.org/&quot;&gt;the SPARQL interface on
Wikidata&lt;/a&gt;:

&lt;p&gt;&lt;pre&gt;
SELECT ?work ?imdb ?ia ?when ?label
WHERE
{
  ?work wdt:P31/wdt:P279* wd:Q11424.
  ?work wdt:P345 ?imdb.
  ?work wdt:P724 ?ia.
  OPTIONAL {
        ?work wdt:P577 ?when.
        ?work rdfs:label ?label.
        FILTER(LANG(?label) = &quot;en&quot;).
  }
}
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;If I understand the query right, for every film entry anywhere in
Wikpedia, it will return the IMDB ID and The Internet Archive ID, and
when the movie was released and its English title, if either or both
of the latter two are available.  At the moment the result set contain
2338 entries.  Of course, it depend on volunteers including both
correct IMDB and The Internet Archive IDs in the wikipedia articles
for the movie.  It should be noted that the result will include
duplicates if the movie have entries in several languages.  There are
some bogus entries, either because The Internet Archive ID contain a
typo or because the movie is not available from The Internet Archive.
I did not verify the IMDB IDs, as I am unsure how to do that
automatically.&lt;/p&gt;

&lt;p&gt;I wrote a small python script to extract the data set from Wikidata
and check if the XML metadata for the movie is available from The
Internet Archive, and after around 1.5 hour it produced a list of 2097
free movies and their IMDB ID.  In total, 171 entries in Wikidata lack
the refered Internet Archive entry.  I assume the 70 &quot;disappearing&quot;
entries (ie 2338-2097-171) are duplicate entries.&lt;/p&gt;

&lt;p&gt;This is not too bad, given that The Internet Archive report to
contain &lt;a href=&quot;https://archive.org/details/feature_films&quot;&gt;5331
feature films&lt;/a&gt; at the moment, but it also mean more than 3000
movies are missing on Wikipedia or are missing the pair of references
on Wikipedia.&lt;/p&gt;

&lt;p&gt;I was curious about the distribution by release year, and made a
little graph to show how the amount of free movies is spread over the
years:&lt;p&gt;

&lt;p&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2017-10-25-verk-i-det-fri-filmer.png&quot;&gt;&lt;/p&gt;

&lt;p&gt;I expect the relative distribution of the remaining 3000 movies to
be similar.&lt;/p&gt;

&lt;p&gt;If you want to help, and want to ensure Wikipedia can be used to
cross reference The Internet Archive and The Internet Movie Database,
please make sure entries like this are listed under the &quot;External
links&quot; heading on the Wikipedia article for the movie:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
* {{Internet Archive film|id=FightingLady}}
* {{IMDb title|id=0036823|title=The Fighting Lady}}
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Please verify the links on the final page, to make sure you did not
introduce a typo.&lt;/p&gt;

&lt;p&gt;Here is the complete list, if you want to correct the 171
identified Wikipedia entries with broken links to The Internet
Archive: &lt;a href=&quot;http://www.wikidata.org/entity/Q1140317&quot;&gt;Q1140317&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q458656&quot;&gt;Q458656&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q458656&quot;&gt;Q458656&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q470560&quot;&gt;Q470560&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q743340&quot;&gt;Q743340&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q822580&quot;&gt;Q822580&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q480696&quot;&gt;Q480696&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q128761&quot;&gt;Q128761&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1307059&quot;&gt;Q1307059&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1335091&quot;&gt;Q1335091&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1537166&quot;&gt;Q1537166&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1438334&quot;&gt;Q1438334&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1479751&quot;&gt;Q1479751&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1497200&quot;&gt;Q1497200&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1498122&quot;&gt;Q1498122&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q865973&quot;&gt;Q865973&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q834269&quot;&gt;Q834269&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q841781&quot;&gt;Q841781&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q841781&quot;&gt;Q841781&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1548193&quot;&gt;Q1548193&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q499031&quot;&gt;Q499031&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1564769&quot;&gt;Q1564769&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1585239&quot;&gt;Q1585239&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1585569&quot;&gt;Q1585569&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1624236&quot;&gt;Q1624236&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4796595&quot;&gt;Q4796595&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4853469&quot;&gt;Q4853469&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4873046&quot;&gt;Q4873046&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q915016&quot;&gt;Q915016&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4660396&quot;&gt;Q4660396&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4677708&quot;&gt;Q4677708&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4738449&quot;&gt;Q4738449&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4756096&quot;&gt;Q4756096&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4766785&quot;&gt;Q4766785&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q880357&quot;&gt;Q880357&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q882066&quot;&gt;Q882066&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q882066&quot;&gt;Q882066&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q204191&quot;&gt;Q204191&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q204191&quot;&gt;Q204191&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1194170&quot;&gt;Q1194170&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q940014&quot;&gt;Q940014&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q946863&quot;&gt;Q946863&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q172837&quot;&gt;Q172837&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q573077&quot;&gt;Q573077&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1219005&quot;&gt;Q1219005&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1219599&quot;&gt;Q1219599&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1643798&quot;&gt;Q1643798&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1656352&quot;&gt;Q1656352&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1659549&quot;&gt;Q1659549&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1660007&quot;&gt;Q1660007&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1698154&quot;&gt;Q1698154&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1737980&quot;&gt;Q1737980&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1877284&quot;&gt;Q1877284&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1199354&quot;&gt;Q1199354&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1199354&quot;&gt;Q1199354&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1199451&quot;&gt;Q1199451&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1211871&quot;&gt;Q1211871&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1212179&quot;&gt;Q1212179&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1238382&quot;&gt;Q1238382&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4906454&quot;&gt;Q4906454&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q320219&quot;&gt;Q320219&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1148649&quot;&gt;Q1148649&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q645094&quot;&gt;Q645094&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5050350&quot;&gt;Q5050350&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5166548&quot;&gt;Q5166548&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2677926&quot;&gt;Q2677926&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2698139&quot;&gt;Q2698139&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2707305&quot;&gt;Q2707305&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2740725&quot;&gt;Q2740725&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2024780&quot;&gt;Q2024780&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2117418&quot;&gt;Q2117418&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2138984&quot;&gt;Q2138984&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1127992&quot;&gt;Q1127992&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1058087&quot;&gt;Q1058087&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1070484&quot;&gt;Q1070484&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1080080&quot;&gt;Q1080080&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1090813&quot;&gt;Q1090813&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1251918&quot;&gt;Q1251918&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1254110&quot;&gt;Q1254110&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1257070&quot;&gt;Q1257070&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1257079&quot;&gt;Q1257079&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1197410&quot;&gt;Q1197410&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1198423&quot;&gt;Q1198423&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q706951&quot;&gt;Q706951&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q723239&quot;&gt;Q723239&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2079261&quot;&gt;Q2079261&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1171364&quot;&gt;Q1171364&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q617858&quot;&gt;Q617858&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5166611&quot;&gt;Q5166611&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5166611&quot;&gt;Q5166611&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q324513&quot;&gt;Q324513&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q374172&quot;&gt;Q374172&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7533269&quot;&gt;Q7533269&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q970386&quot;&gt;Q970386&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q976849&quot;&gt;Q976849&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7458614&quot;&gt;Q7458614&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5347416&quot;&gt;Q5347416&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5460005&quot;&gt;Q5460005&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5463392&quot;&gt;Q5463392&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3038555&quot;&gt;Q3038555&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5288458&quot;&gt;Q5288458&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2346516&quot;&gt;Q2346516&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5183645&quot;&gt;Q5183645&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5185497&quot;&gt;Q5185497&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5216127&quot;&gt;Q5216127&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5223127&quot;&gt;Q5223127&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5261159&quot;&gt;Q5261159&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q1300759&quot;&gt;Q1300759&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q5521241&quot;&gt;Q5521241&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7733434&quot;&gt;Q7733434&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7736264&quot;&gt;Q7736264&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7737032&quot;&gt;Q7737032&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7882671&quot;&gt;Q7882671&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7719427&quot;&gt;Q7719427&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7719444&quot;&gt;Q7719444&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7722575&quot;&gt;Q7722575&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2629763&quot;&gt;Q2629763&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2640346&quot;&gt;Q2640346&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2649671&quot;&gt;Q2649671&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7703851&quot;&gt;Q7703851&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7747041&quot;&gt;Q7747041&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q6544949&quot;&gt;Q6544949&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q6672759&quot;&gt;Q6672759&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2445896&quot;&gt;Q2445896&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q12124891&quot;&gt;Q12124891&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3127044&quot;&gt;Q3127044&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2511262&quot;&gt;Q2511262&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2517672&quot;&gt;Q2517672&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2543165&quot;&gt;Q2543165&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q426628&quot;&gt;Q426628&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q426628&quot;&gt;Q426628&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q12126890&quot;&gt;Q12126890&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q13359969&quot;&gt;Q13359969&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q13359969&quot;&gt;Q13359969&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2294295&quot;&gt;Q2294295&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2294295&quot;&gt;Q2294295&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2559509&quot;&gt;Q2559509&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2559912&quot;&gt;Q2559912&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7760469&quot;&gt;Q7760469&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q6703974&quot;&gt;Q6703974&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q4744&quot;&gt;Q4744&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7766962&quot;&gt;Q7766962&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7768516&quot;&gt;Q7768516&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7769205&quot;&gt;Q7769205&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7769988&quot;&gt;Q7769988&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q2946945&quot;&gt;Q2946945&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3212086&quot;&gt;Q3212086&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3212086&quot;&gt;Q3212086&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q18218448&quot;&gt;Q18218448&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q18218448&quot;&gt;Q18218448&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q18218448&quot;&gt;Q18218448&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q6909175&quot;&gt;Q6909175&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7405709&quot;&gt;Q7405709&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7416149&quot;&gt;Q7416149&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7239952&quot;&gt;Q7239952&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7317332&quot;&gt;Q7317332&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7783674&quot;&gt;Q7783674&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7783704&quot;&gt;Q7783704&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7857590&quot;&gt;Q7857590&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3372526&quot;&gt;Q3372526&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3372642&quot;&gt;Q3372642&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3372816&quot;&gt;Q3372816&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3372909&quot;&gt;Q3372909&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7959649&quot;&gt;Q7959649&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7977485&quot;&gt;Q7977485&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q7992684&quot;&gt;Q7992684&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3817966&quot;&gt;Q3817966&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3821852&quot;&gt;Q3821852&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3420907&quot;&gt;Q3420907&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q3429733&quot;&gt;Q3429733&lt;/a&gt;, 
&lt;a href=&quot;http://www.wikidata.org/entity/Q774474&quot;&gt;Q774474&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A one-way wall on the border?</title>
                <link>http://people.skolelinux.org/pere/blog/A_one_way_wall_on_the_border_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_one_way_wall_on_the_border_.html</guid>
                <pubDate>Sat, 14 Oct 2017 22:10:00 +0200</pubDate>
                <description>&lt;p&gt;I find it fascinating how many of the people being locked inside
the proposed border wall between USA and Mexico support the idea.  The
proposal to keep Mexicans out reminds me of
&lt;a href=&quot;http://www.history.com/news/10-things-you-may-not-know-about-the-berlin-wall&quot;&gt;the
propaganda twist from the East Germany government&lt;/a&gt; calling the wall
the “Antifascist Bulwark” after erecting the Berlin Wall, claiming
that the wall was erected to keep enemies from creeping into East
Germany, while it was obvious to the people locked inside it that it
was erected to keep the people from escaping.&lt;/p&gt;

&lt;p&gt;Do the people in USA supporting this wall really believe it is a
one way wall, only keeping people on the outside from getting in,
while not keeping people in the inside from getting out?&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Generating 3D prints in Debian using Cura and Slic3r(-prusa)</title>
                <link>http://people.skolelinux.org/pere/blog/Generating_3D_prints_in_Debian_using_Cura_and_Slic3r__prusa_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Generating_3D_prints_in_Debian_using_Cura_and_Slic3r__prusa_.html</guid>
                <pubDate>Mon, 9 Oct 2017 10:50:00 +0200</pubDate>
                <description>&lt;p&gt;At my nearby maker space,
&lt;a href=&quot;http://sonen.ifi.uio.no/&quot;&gt;Sonen&lt;/a&gt;, I heard the story that it
was easier to generate gcode files for theyr 3D printers (Ultimake 2+)
on Windows and MacOS X than Linux, because the software involved had
to be manually compiled and set up on Linux while premade packages
worked out of the box on Windows and MacOS X.  I found this annoying,
as the software involved,
&lt;a href=&quot;https://github.com/Ultimaker/Cura&quot;&gt;Cura&lt;/a&gt;, is free software
and should be trivial to get up and running on Linux if someone took
the time to package it for the relevant distributions.  I even found
&lt;a href=&quot;https://bugs.debian.org/706656&quot;&gt;a request for adding into
Debian&lt;/a&gt; from 2013, which had seem some activity over the years but
never resulted in the software showing up in Debian.  So a few days
ago I offered my help to try to improve the situation.&lt;/p&gt;

&lt;p&gt;Now I am very happy to see that all the packages required by a
working Cura in Debian are uploaded into Debian and waiting in the NEW
queue for the ftpmasters to have a look.  You can track the progress
on
&lt;a href=&quot;https://qa.debian.org/developer.php?email=3dprinter-general%40lists.alioth.debian.org&quot;&gt;the
status page for the 3D printer team&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The uploaded packages are a bit behind upstream, and was uploaded
now to get slots in &lt;a href=&quot;https://ftp-master.debian.org/new.html&quot;&gt;the NEW
queue&lt;/a&gt; while we work up updating the packages to the latest
upstream version.&lt;/p&gt;

&lt;p&gt;On a related note, two competitors for Cura, which I found harder
to use and was unable to configure correctly for Ultimaker 2+ in the
short time I spent on it, are already in Debian.  If you are looking
for 3D printer &quot;slicers&quot; and want something already available in
Debian, check out
&lt;a href=&quot;https://tracker.debian.org/pkg/slic3r&quot;&gt;slic3r&lt;/a&gt; and
&lt;a href=&quot;https://tracker.debian.org/pkg/slic3r-prusa&quot;&gt;slic3r-prusa&lt;/a&gt;.
The latter is a fork of the former.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Visualizing GSM radio chatter using gr-gsm and Hopglass</title>
                <link>http://people.skolelinux.org/pere/blog/Visualizing_GSM_radio_chatter_using_gr_gsm_and_Hopglass.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Visualizing_GSM_radio_chatter_using_gr_gsm_and_Hopglass.html</guid>
                <pubDate>Fri, 29 Sep 2017 10:30:00 +0200</pubDate>
                <description>&lt;p&gt;Every mobile phone announce its existence over radio to the nearby
mobile cell towers.  And this radio chatter is available for anyone
with a radio receiver capable of receiving them.  Details about the
mobile phones with very good accuracy is of course collected by the
phone companies, but this is not the topic of this blog post.  The
mobile phone radio chatter make it possible to figure out when a cell
phone is nearby, as it include the SIM card ID (IMSI).  By paying
attention over time, one can see when a phone arrive and when it leave
an area.  I believe it would be nice to make this information more
available to the general public, to make more people aware of how
their phones are announcing their whereabouts to anyone that care to
listen.&lt;/p&gt;

&lt;p&gt;I am very happy to report that we managed to get something
visualizing this information up and running for
&lt;a href=&quot;http://norwaymakers.org/osf17&quot;&gt;Oslo Skaperfestival 2017&lt;/a&gt;
(Oslo Makers Festival) taking place today and tomorrow at Deichmanske
library.  The solution is based on the
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html&quot;&gt;simple
recipe for listening to GSM chatter&lt;/a&gt; I posted a few days ago, and
will show up at the stand of &lt;a href=&quot;http://sonen.ifi.uio.no/&quot;&gt;Åpen
Sone from the Computer Science department of the University of
Oslo&lt;/a&gt;.  The presentation will show the nearby mobile phones (aka
IMSIs) as dots in a web browser graph, with lines to the dot
representing mobile base station it is talking to. It was working in
the lab yesterday, and was moved into place this morning.&lt;/p&gt;

&lt;p&gt;We set up a fairly powerful desktop machine using Debian
Buster/Testing with several (five, I believe) RTL2838 DVB-T receivers
connected and visualize the visible cell phone towers using an
&lt;a href=&quot;https://github.com/marlow925/hopglass&quot;&gt;English version of
Hopglass&lt;/a&gt;.  A fairly powerfull machine is needed as the
grgsm_livemon_headless processes from
&lt;a href=&quot;https://tracker.debian.org/pkg/gr-gsm&quot;&gt;gr-gsm&lt;/a&gt; converting
the radio signal to data packages is quite CPU intensive.&lt;/p&gt;
                                        
&lt;p&gt;The frequencies to listen to, are identified using a slightly
patched scan-and-livemon (to set the --args values for each receiver),
and the Hopglass data is generated using the
&lt;a href=&quot;https://github.com/petterreinholdtsen/IMSI-catcher/tree/meshviewer-output&quot;&gt;patches
in my meshviewer-output branch&lt;/a&gt;.  For some reason we could not get
more than four SDRs working.  There is also a geographical map trying
to show the location of the base stations, but I believe their
coordinates are hardcoded to some random location in Germany, I
believe.  The code should be replaced with code to look up location in
a text file, a sqlite database or one of the online databases
mentioned in
&lt;a href=&quot;https://github.com/Oros42/IMSI-catcher/issues/14&quot;&gt;the github
issue for the topic&lt;/a&gt;.

&lt;p&gt;If this sound interesting, visit the stand at the festival!&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Easier recipe to observe the cell phones around you</title>
                <link>http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html</guid>
                <pubDate>Sun, 24 Sep 2017 08:30:00 +0200</pubDate>
                <description>&lt;p&gt;A little more than a month ago I wrote
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html&quot;&gt;how
to observe the SIM card ID (aka IMSI number) of mobile phones talking
to nearby mobile phone base stations using Debian GNU/Linux and a
cheap USB software defined radio&lt;/a&gt;, and thus being able to pinpoint
the location of people and equipment (like cars and trains) with an
accuracy of a few kilometer.  Since then we have worked to make the
procedure even simpler, and it is now possible to do this without any
manual frequency tuning and without building your own packages.&lt;/p&gt;

&lt;p&gt;The &lt;a href=&quot;https://tracker.debian.org/pkg/gr-gsm&quot;&gt;gr-gsm&lt;/a&gt;
package is now included in Debian testing and unstable, and the
IMSI-catcher code no longer require root access to fetch and decode
the GSM data collected using gr-gsm.&lt;/p&gt;

&lt;p&gt;Here is an updated recipe, using packages built by Debian and a git
clone of two python scripts:&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;Start with a Debian machine running the Buster version (aka
  testing).&lt;/li&gt;

&lt;li&gt;Run &#39;&lt;tt&gt;apt install gr-gsm python-numpy python-scipy
  python-scapy&lt;/tt&gt;&#39; as root to install required packages.&lt;/li&gt;

&lt;li&gt;Fetch the code decoding GSM packages using &#39;&lt;tt&gt;git clone
  github.com/Oros42/IMSI-catcher.git&lt;/tt&gt;&#39;.&lt;/li&gt;

&lt;li&gt;Insert USB software defined radio supported by GNU Radio.&lt;/li&gt;

&lt;li&gt;Enter the IMSI-catcher directory and run &#39;&lt;tt&gt;python
  scan-and-livemon&lt;/tt&gt;&#39; to locate the frequency of nearby base
  stations and start listening for GSM packages on one of them.&lt;/li&gt;

&lt;li&gt;Enter the IMSI-catcher directory and run &#39;&lt;tt&gt;python
  simple_IMSI-catcher.py&lt;/tt&gt;&#39; to display the collected information.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;Note, due to a bug somewhere the scan-and-livemon program (actually
&lt;a href=&quot;https://github.com/ptrkrysik/gr-gsm/issues/336&quot;&gt;its underlying
program grgsm_scanner&lt;/a&gt;) do not work with the HackRF radio.  It does
work with RTL 8232 and other similar USB radio receivers you can get
very cheaply
(&lt;a href=&quot;https://www.ebay.com/sch/items/?_nkw=rtl+2832&quot;&gt;for example
from ebay&lt;/a&gt;), so for now the solution is to scan using the RTL radio
and only use HackRF for fetching GSM data.&lt;/p&gt;

&lt;p&gt;As far as I can tell, a cell phone only show up on one of the
frequencies at the time, so if you are going to track and count every
cell phone around you, you need to listen to all the frequencies used.
To listen to several frequencies, use the --numrecv argument to
scan-and-livemon to use several receivers.  Further, I am not sure if
phones using 3G or 4G will show as talking GSM to base stations, so
this approach might not see all phones around you.  I typically see
0-400 IMSI numbers an hour when looking around where I live.&lt;/p&gt;

&lt;p&gt;I&#39;ve tried to run the scanner on a
&lt;a href=&quot;https://wiki.debian.org/RaspberryPi&quot;&gt;Raspberry Pi 2 and 3
running Debian Buster&lt;/a&gt;, but the grgsm_livemon_headless process seem
to be too CPU intensive to keep up.  When GNU Radio print &#39;O&#39; to
stdout, I am told there it is caused by a buffer overflow between the
radio and GNU Radio, caused by the program being unable to read the
GSM data fast enough.  If you see a stream of &#39;O&#39;s from the terminal
where you started scan-and-livemon, you need a give the process more
CPU power.  Perhaps someone are able to optimize the code to a point
where it become possible to set up RPi3 based GSM sniffers?  I tried
using Raspbian instead of Debian, but there seem to be something wrong
with GNU Radio on raspbian, causing glibc to abort().&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Simpler recipe on how to make a simple $7 IMSI Catcher using Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html</guid>
                <pubDate>Wed, 9 Aug 2017 23:59:00 +0200</pubDate>
                <description>&lt;p&gt;On friday, I came across an interesting article in the Norwegian
web based ICT news magazine digi.no on
&lt;a href=&quot;https://www.digi.no/artikler/sikkerhetsforsker-lagde-enkel-imsi-catcher-for-60-kroner-na-kan-mobiler-kartlegges-av-alle/398588&quot;&gt;how
to collect the IMSI numbers of nearby cell phones&lt;/a&gt; using the cheap
DVB-T software defined radios.  The article refered to instructions
and &lt;a href=&quot;https://www.youtube.com/watch?v=UjwgNd_as30&quot;&gt;a recipe by
Keld Norman on Youtube on how to make a simple $7 IMSI Catcher&lt;/a&gt;, and I decided to test them out.&lt;/p&gt;

&lt;p&gt;The instructions said to use Ubuntu, install pip using apt (to
bypass apt), use pip to install pybombs (to bypass both apt and pip),
and the ask pybombs to fetch and build everything you need from
scratch.  I wanted to see if I could do the same on the most recent
Debian packages, but this did not work because pybombs tried to build
stuff that no longer build with the most recent openssl library or
some other version skew problem.  While trying to get this recipe
working, I learned that the apt-&gt;pip-&gt;pybombs route was a long detour,
and the only piece of software dependency missing in Debian was the
gr-gsm package.  I also found out that the lead upstream developer of
gr-gsm (the name stand for GNU Radio GSM) project already had a set of
Debian packages provided in an Ubuntu PPA repository.  All I needed to
do was to dget the Debian source package and built it.&lt;/p&gt;

&lt;p&gt;The IMSI collector is a python script listening for packages on the
loopback network device and printing to the terminal some specific GSM
packages with IMSI numbers in them.  The code is fairly short and easy
to understand.  The reason this work is because gr-gsm include a tool
to read GSM data from a software defined radio like a DVB-T USB stick
and other software defined radios, decode them and inject them into a
network device on your Linux machine (using the loopback device by
default).  This proved to work just fine, and I&#39;ve been testing the
collector for a few days now.&lt;/p&gt;

&lt;p&gt;The updated and simpler recipe is thus to&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;start with a Debian machine running Stretch or newer,&lt;/li&gt;

&lt;li&gt;build and install the gr-gsm package available from
&lt;a href=&quot;http://ppa.launchpad.net/ptrkrysik/gr-gsm/ubuntu/pool/main/g/gr-gsm/&quot;&gt;http://ppa.launchpad.net/ptrkrysik/gr-gsm/ubuntu/pool/main/g/gr-gsm/&lt;/a&gt;,&lt;/li&gt;

&lt;li&gt;clone the git repostory from &lt;a href=&quot;https://github.com/Oros42/IMSI-catcher&quot;&gt;https://github.com/Oros42/IMSI-catcher&lt;/a&gt;,&lt;/li&gt;

&lt;li&gt;run grgsm_livemon and adjust the frequency until the terminal
where it was started is filled with a stream of text (meaning you
found a GSM station).&lt;/li&gt;

&lt;li&gt;go into the IMSI-catcher directory and run &#39;sudo python simple_IMSI-catcher.py&#39; to extract the IMSI numbers.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;To make it even easier in the future to get this sniffer up and
running, I decided to package
&lt;a href=&quot;https://github.com/ptrkrysik/gr-gsm/&quot;&gt;the gr-gsm project&lt;/a&gt;
for Debian (&lt;a href=&quot;https://bugs.debian.org/871055&quot;&gt;WNPP
#871055&lt;/a&gt;), and the package was uploaded into the NEW queue today.
Luckily the gnuradio maintainer has promised to help me, as I do not
know much about gnuradio stuff yet.&lt;/p&gt;

&lt;p&gt;I doubt this &quot;IMSI cacher&quot; is anywhere near as powerfull as
commercial tools like
&lt;a href=&quot;https://www.thespyphone.com/portable-imsi-imei-catcher/&quot;&gt;The
Spy Phone Portable IMSI / IMEI Catcher&lt;/a&gt; or the
&lt;a href=&quot;https://en.wikipedia.org/wiki/Stingray_phone_tracker&quot;&gt;Harris
Stingray&lt;/a&gt;, but I hope the existance of cheap alternatives can make
more people realise how their whereabouts when carrying a cell phone
is easily tracked.  Seeing the data flow on the screen, realizing that
I live close to a police station and knowing that the police is also
wearing cell phones, I wonder how hard it would be for criminals to
track the position of the police officers to discover when there are
police near by, or for foreign military forces to track the location
of the Norwegian military forces, or for anyone to track the location
of government officials...&lt;/p&gt;

&lt;p&gt;It is worth noting that the data reported by the IMSI-catcher
script mentioned above is only a fraction of the data broadcasted on
the GSM network.  It will only collect one frequency at the time,
while a typical phone will be using several frequencies, and not all
phones will be using the frequencies tracked by the grgsm_livemod
program.  Also, there is a lot of radio chatter being ignored by the
simple_IMSI-catcher script, which would be collected by extending the
parser code.  I wonder if gr-gsm can be set up to listen to more than
one frequency?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Norwegian Bokmål edition of Debian Administrator&#39;s Handbook is now available</title>
                <link>http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_edition_of_Debian_Administrator_s_Handbook_is_now_available.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_edition_of_Debian_Administrator_s_Handbook_is_now_available.html</guid>
                <pubDate>Tue, 25 Jul 2017 21:10:00 +0200</pubDate>
                <description>&lt;p align=&quot;center&quot;&gt;&lt;img align=&quot;center&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2017-07-25-debian-handbook-nb-testprint.png&quot;/&gt;&lt;/p&gt;

&lt;p&gt;I finally received a copy of the Norwegian Bokmål edition of
&quot;&lt;a href=&quot;https://debian-handbook.info/&quot;&gt;The Debian Administrator&#39;s
Handbook&lt;/a&gt;&quot;.  This test copy arrived in the mail a few days ago, and
I am very happy to hold the result in my hand.   We spent around one and a half year translating it. This paperbook edition
&lt;a href=&quot;https://debian-handbook.info/get/#norwegian&quot;&gt;is available
from lulu.com&lt;/a&gt;.  If you buy it quickly, you save 25% on the list
price.  The book is also available for download in electronic form as
PDF, EPUB and Mobipocket, as can be
&lt;a href=&quot;https://debian-handbook.info/browse/nb-NO/stable/&quot;&gt;read online
as a web page&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This is the second book I publish (the first was the book
&quot;&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt;&quot; by Lawrence Lessig
in
&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22440520.html&quot;&gt;English&lt;/a&gt;,
&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html&quot;&gt;French&lt;/a&gt;
and
&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html&quot;&gt;Norwegian
Bokmål&lt;/a&gt;), and I am very excited to finally wrap up this
project.  I hope
&quot;&lt;a href=&quot;http://www.lulu.com/shop/rapha%C3%ABl-hertzog-and-roland-mas/h%C3%A5ndbok-for-debian-administratoren/paperback/product-23262290.html&quot;&gt;Håndbok
for Debian-administratoren&lt;/a&gt;&quot; will be well received.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Updated sales number for my Free Culture paper editions</title>
                <link>http://people.skolelinux.org/pere/blog/Updated_sales_number_for_my_Free_Culture_paper_editions.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Updated_sales_number_for_my_Free_Culture_paper_editions.html</guid>
                <pubDate>Mon, 12 Jun 2017 11:40:00 +0200</pubDate>
                <description>&lt;p&gt;It is pleasing to see that the work we put down in publishing new
editions of the classic &lt;a href=&quot;http://www.free-culture.cc/&quot;&gt;Free
Culture book&lt;/a&gt; by the founder of the Creative Commons movement,
Lawrence Lessig, is still being appreciated.  I had a look at the
latest sales numbers for the paper edition today.  Not too impressive,
but happy to see some buyers still exist.  All the revenue from the
books is sent to the &lt;a href=&quot;https://creativecommons.org/&quot;&gt;Creative
Commons Corporation&lt;/a&gt;, and they receive the largest cut if you buy
directly from Lulu.  Most books are sold via Amazon, with Ingram
second and only a small fraction directly from Lulu.  The ebook
edition is available for free from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;Github&lt;/a&gt;.&lt;/p&gt;

&lt;table border=&quot;0&quot;&gt;
&lt;tr&gt;&lt;th rowspan=&quot;2&quot; valign=&quot;bottom&quot;&gt;Title / language&lt;/th&gt;&lt;th colspan=&quot;3&quot;&gt;Quantity&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;th&gt;2016 jan-jun&lt;/th&gt;&lt;th&gt;2016 jul-dec&lt;/th&gt;&lt;th&gt;2017 jan-may&lt;/th&gt;&lt;/tr&gt;

&lt;tr&gt;
  &lt;td&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html&quot;&gt;Culture Libre / French&lt;/a&gt;&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;3&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;6&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;15&lt;/td&gt;
&lt;/tr&gt;

&lt;tr&gt;
  &lt;td&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html&quot;&gt;Fri kultur / Norwegian&lt;/a&gt;&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;7&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;1&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;0&lt;/td&gt;
&lt;/tr&gt;

&lt;tr&gt;
  &lt;td&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22440520.html&quot;&gt;Free Culture / English&lt;/a&gt;&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;14&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;27&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;16&lt;/td&gt;
&lt;/tr&gt;

&lt;tr&gt;
  &lt;td&gt;Total&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;24&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;34&lt;/td&gt;
  &lt;td align=&quot;right&quot;&gt;31&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

&lt;p&gt;A bit sad to see the low sales number on the Norwegian edition, and
a bit surprising the English edition still selling so well.&lt;/p&gt;

&lt;p&gt;If you would like to translate and publish the book in your native
language, I would be happy to help make it happen.  Please get in
touch.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Release 0.1.1 of free software archive system Nikita announced</title>
                <link>http://people.skolelinux.org/pere/blog/Release_0_1_1_of_free_software_archive_system_Nikita_announced.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Release_0_1_1_of_free_software_archive_system_Nikita_announced.html</guid>
                <pubDate>Sat, 10 Jun 2017 00:40:00 +0200</pubDate>
                <description>&lt;p&gt;I am very happy to report that the
&lt;a href=&quot;https://github.com/hiOA-ABI/nikita-noark5-core&quot;&gt;Nikita Noark 5
core project&lt;/a&gt; tagged its second release today.  The free software
solution is an implementation of the Norwegian archive standard Noark
5 used by government offices in Norway.  These were the changes in
version 0.1.1 since version 0.1.0 (from NEWS.md):

&lt;ul&gt;

 &lt;li&gt;Continued work on the angularjs GUI, including document upload.&lt;/li&gt;
 &lt;li&gt;Implemented correspondencepartPerson, correspondencepartUnit and
   correspondencepartInternal&lt;/li&gt;
 &lt;li&gt;Applied for coverity coverage and started submitting code on
   regualr basis.&lt;/li&gt;
 &lt;li&gt;Started fixing bugs reported by coverity&lt;/li&gt;
 &lt;li&gt;Corrected and completed HATEOAS links to make sure entire API is
   available via URLs in _links.&lt;/li&gt;
 &lt;li&gt;Corrected all relation URLs to use trailing slash.&lt;/li&gt;
 &lt;li&gt;Add initial support for storing data in ElasticSearch.&lt;/li&gt;
 &lt;li&gt;Now able to receive and store uploaded files in the archive.&lt;/li&gt;
 &lt;li&gt;Changed JSON output for object lists to have relations in _links.&lt;/li&gt;
 &lt;li&gt;Improve JSON output for empty object lists.&lt;/li&gt;
 &lt;li&gt;Now uses correct MIME type application/vnd.noark5-v4+json.&lt;/li&gt;
 &lt;li&gt;Added support for docker container images.&lt;/li&gt;
 &lt;li&gt;Added simple API browser implemented in JavaScript/Angular.&lt;/li&gt;
 &lt;li&gt;Started on archive client implemented in JavaScript/Angular.&lt;/li&gt;
 &lt;li&gt;Started on prototype to show the public mail journal.&lt;/li&gt;
 &lt;li&gt;Improved performance by disabling Sprint FileWatcher.&lt;/li&gt;
 &lt;li&gt;Added support for &#39;arkivskaper&#39;, &#39;saksmappe&#39; and &#39;journalpost&#39;.&lt;/li&gt;
 &lt;li&gt;Added support for some metadata codelists.&lt;/li&gt;
 &lt;li&gt;Added support for Cross-origin resource sharing (CORS).&lt;/li&gt;
 &lt;li&gt;Changed login method from Basic Auth to JSON Web Token (RFC 7519)
   style.&lt;/li&gt;
 &lt;li&gt;Added support for GET-ing ny-* URLs.&lt;/li&gt;
 &lt;li&gt;Added support for modifying entities using PUT and eTag.&lt;/li&gt;
 &lt;li&gt;Added support for returning XML output on request.&lt;/li&gt;
 &lt;li&gt;Removed support for English field and class names, limiting ourself
   to the official names.&lt;/li&gt;
 &lt;li&gt;...&lt;/li&gt;
 
&lt;/ul&gt;

&lt;p&gt;If this sound interesting to you, please contact us on IRC (#nikita
on irc.freenode.net) or email
(&lt;a href=&quot;https://lists.nuug.no/mailman/listinfo/nikita-noark&quot;&gt;nikita-noark
mailing list).&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Idea for storing trusted timestamps in a Noark 5 archive</title>
                <link>http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html</guid>
                <pubDate>Wed, 7 Jun 2017 21:40:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;em&gt;This is a copy of
&lt;a href=&quot;https://lists.nuug.no/pipermail/nikita-noark/2017-June/000297.html&quot;&gt;an
email I posted to the nikita-noark mailing list&lt;/a&gt;.  Please follow up
there if you would like to discuss this topic.  The background is that
we are making a free software archive system based on the Norwegian
&lt;a href=&quot;https://www.arkivverket.no/forvaltning-og-utvikling/regelverk-og-standarder/noark-standarden&quot;&gt;Noark
5 standard&lt;/a&gt; for government archives.&lt;/em&gt;&lt;/p&gt;

&lt;p&gt;I&#39;ve been wondering a bit lately how trusted timestamps could be
stored in Noark 5.
&lt;a href=&quot;https://en.wikipedia.org/wiki/Trusted_timestamping&quot;&gt;Trusted
timestamps&lt;/a&gt; can be used to verify that some information
(document/file/checksum/metadata) have not been changed since a
specific time in the past.  This is useful to verify the integrity of
the documents in the archive.&lt;/p&gt;

&lt;p&gt;Then it occured to me, perhaps the trusted timestamps could be
stored as dokument variants (ie dokumentobjekt referered to from
dokumentbeskrivelse) with the filename set to the hash it is
stamping?&lt;/p&gt;

&lt;p&gt;Given a &quot;dokumentbeskrivelse&quot; with an associated &quot;dokumentobjekt&quot;,
a new dokumentobjekt is associated with &quot;dokumentbeskrivelse&quot; with the
same attributes as the stamped dokumentobjekt except these
attributes:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;format -&gt; &quot;RFC3161&quot;
&lt;li&gt;mimeType -&gt; &quot;application/timestamp-reply&quot;
&lt;li&gt;formatDetaljer -&gt; &quot;&amp;lt;source URL for timestamp service&amp;gt;&quot;
&lt;li&gt;filenavn -&gt; &quot;&amp;lt;sjekksum&amp;gt;.tsr&quot;

&lt;/ul&gt;

&lt;p&gt;This assume a service following
&lt;a href=&quot;https://tools.ietf.org/html/rfc3161&quot;&gt;IETF RFC 3161&lt;/a&gt; is
used, which specifiy the given MIME type for replies and the .tsr file
ending for the content of such trusted timestamp.  As far as I can
tell from the Noark 5 specifications, it is OK to have several
variants/renderings of a dokument attached to a given
dokumentbeskrivelse objekt.  It might be stretching it a bit to make
some of these variants represent crypto-signatures useful for
verifying the document integrity instead of representing the dokument
itself.&lt;/p&gt;

&lt;p&gt;Using the source of the service in formatDetaljer allow several
timestamping services to be used.  This is useful to spread the risk
of key compromise over several organisations.  It would only be a
problem to trust the timestamps if all of the organisations are
compromised.&lt;/p&gt;

&lt;p&gt;The following oneliner on Linux can be used to generate the tsr
file.  $input is the path to the file to checksum, and $sha256 is the
SHA-256 checksum of the file (ie the &quot;&lt;sjekksum&gt;.tsr&quot; value mentioned
above).&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
openssl ts -query -data &quot;$inputfile&quot; -cert -sha256 -no_nonce \
  | curl -s -H &quot;Content-Type: application/timestamp-query&quot; \
      --data-binary &quot;@-&quot; http://zeitstempel.dfn.de &gt; $sha256.tsr
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;To verify the timestamp, you first need to download the public key
of the trusted timestamp service, for example using this command:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
wget -O ca-cert.txt \
  https://pki.pca.dfn.de/global-services-ca/pub/cacert/chain.txt
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Note, the public key should be stored alongside the timestamps in
the archive to make sure it is also available 100 years from now.  It
is probably a good idea to standardise how and were to store such
public keys, to make it easier to find for those trying to verify
documents 100 or 1000 years from now. :)&lt;/p&gt;

&lt;p&gt;The verification itself is a simple openssl command:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
openssl ts -verify -data $inputfile -in $sha256.tsr \
  -CAfile ca-cert.txt -text
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Is there any reason this approach would not work?  Is it somehow against
the Noark 5 specification?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Free software archive system Nikita now able to store documents</title>
                <link>http://people.skolelinux.org/pere/blog/Free_software_archive_system_Nikita_now_able_to_store_documents.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Free_software_archive_system_Nikita_now_able_to_store_documents.html</guid>
                <pubDate>Sun, 19 Mar 2017 08:00:00 +0100</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;https://github.com/hiOA-ABI/nikita-noark5-core&quot;&gt;Nikita
Noark 5 core project&lt;/a&gt; is implementing the Norwegian standard for
keeping an electronic archive of government documents.
&lt;a href=&quot;http://www.arkivverket.no/arkivverket/Offentlig-forvaltning/Noark/Noark-5/English-version&quot;&gt;The
Noark 5 standard&lt;/a&gt; document the requirement for data systems used by
the archives in the Norwegian government, and the Noark 5 web interface
specification document a REST web service for storing, searching and
retrieving documents and metadata in such archive.  I&#39;ve been involved
in the project since a few weeks before Christmas, when the Norwegian
Unix User Group
&lt;a href=&quot;https://www.nuug.no/news/NOARK5_kjerne_som_fri_programvare_f_r_epostliste_hos_NUUG.shtml&quot;&gt;announced
it supported the project&lt;/a&gt;.  I believe this is an important project,
and hope it can make it possible for the government archives in the
future to use free software to keep the archives we citizens depend
on.  But as I do not hold such archive myself, personally my first use
case is to store and analyse public mail journal metadata published
from the government.  I find it useful to have a clear use case in
mind when developing, to make sure the system scratches one of my
itches.&lt;/p&gt;

&lt;p&gt;If you would like to help make sure there is a free software
alternatives for the archives, please join our IRC channel
(&lt;a href=&quot;irc://irc.freenode.net/%23nikita&quot;&gt;#nikita on
irc.freenode.net&lt;/a&gt;) and
&lt;a href=&quot;https://lists.nuug.no/mailman/listinfo/nikita-noark&quot;&gt;the
project mailing list&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;When I got involved, the web service could store metadata about
documents.  But a few weeks ago, a new milestone was reached when it
became possible to store full text documents too.  Yesterday, I
completed an implementation of a command line tool
&lt;tt&gt;archive-pdf&lt;/tt&gt; to upload a PDF file to the archive using this
API.  The tool is very simple at the moment, and find existing
&lt;a href=&quot;https://en.wikipedia.org/wiki/Fonds&quot;&gt;fonds&lt;/a&gt;, series and
files while asking the user to select which one to use if more than
one exist.  Once a file is identified, the PDF is associated with the
file and uploaded, using the title extracted from the PDF itself.  The
process is fairly similar to visiting the archive, opening a cabinet,
locating a file and storing a piece of paper in the archive.  Here is
a test run directly after populating the database with test data using
our API tester:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
~/src//noark5-tester$ ./archive-pdf mangelmelding/mangler.pdf
using arkiv: Title of the test fonds created 2017-03-18T23:49:32.103446
using arkivdel: Title of the test series created 2017-03-18T23:49:32.103446

 0 - Title of the test case file created 2017-03-18T23:49:32.103446
 1 - Title of the test file created 2017-03-18T23:49:32.103446
Select which mappe you want (or search term): 0
Uploading mangelmelding/mangler.pdf
  PDF title: Mangler i spesifikasjonsdokumentet for NOARK 5 Tjenestegrensesnitt
  File 2017/1: Title of the test case file created 2017-03-18T23:49:32.103446
~/src//noark5-tester$
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;You can see here how the fonds (arkiv) and serie (arkivdel) only had
one option, while the user need to choose which file (mappe) to use
among the two created by the API tester.  The &lt;tt&gt;archive-pdf&lt;/tt&gt;
tool can be found in the git repository for the API tester.&lt;/p&gt;

&lt;p&gt;In the project, I have been mostly working on
&lt;a href=&quot;https://github.com/petterreinholdtsen/noark5-tester&quot;&gt;the API
tester&lt;/a&gt; so far, while getting to know the code base.  The API
tester currently use
&lt;a href=&quot;https://en.wikipedia.org/wiki/HATEOAS&quot;&gt;the HATEOAS links&lt;/a&gt;
to traverse the entire exposed service API and verify that the exposed
operations and objects match the specification, as well as trying to
create objects holding metadata and uploading a simple XML file to
store.  The tester has proved very useful for finding flaws in our
implementation, as well as flaws in the reference site and the
specification.&lt;/p&gt;

&lt;p&gt;The test document I uploaded is a summary of all the specification
defects we have collected so far while implementing the web service.
There are several unclear and conflicting parts of the specification,
and we have
&lt;a href=&quot;https://github.com/petterreinholdtsen/noark5-tester/tree/master/mangelmelding&quot;&gt;started
writing down&lt;/a&gt; the questions we get from implementing it.  We use a
format inspired by how &lt;a href=&quot;http://www.opengroup.org/austin/&quot;&gt;The
Austin Group&lt;/a&gt; collect defect reports for the POSIX standard with
&lt;a href=&quot;http://www.opengroup.org/austin/mantis.html&quot;&gt;their
instructions for the MANTIS defect tracker system&lt;/a&gt;, in lack of an official way to structure defect reports for Noark 5 (our first submitted defect report was a &lt;a href=&quot;https://github.com/petterreinholdtsen/noark5-tester/blob/master/mangelmelding/sendt/2017-03-15-mangel-prosess.md&quot;&gt;request for a procedure for submitting defect reports&lt;/a&gt; :).

&lt;p&gt;The Nikita project is implemented using Java and Spring, and is
fairly easy to get up and running using Docker containers for those
that want to test the current code base.  The API tester is
implemented in Python.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Detecting NFS hangs on Linux without hanging yourself...</title>
                <link>http://people.skolelinux.org/pere/blog/Detecting_NFS_hangs_on_Linux_without_hanging_yourself___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Detecting_NFS_hangs_on_Linux_without_hanging_yourself___.html</guid>
                <pubDate>Thu, 9 Mar 2017 15:20:00 +0100</pubDate>
                <description>&lt;p&gt;Over the years, administrating thousand of NFS mounting linux
computers at the time, I often needed a way to detect if the machine
was experiencing NFS hang.  If you try to use &lt;tt&gt;df&lt;/tt&gt; or look at a
file or directory affected by the hang, the process (and possibly the
shell) will hang too.  So you want to be able to detect this without
risking the detection process getting stuck too.  It has not been
obvious how to do this.  When the hang has lasted a while, it is
possible to find messages like these in dmesg:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
nfs: server nfsserver not responding, still trying
&lt;br&gt;nfs: server nfsserver OK
&lt;/blockquote&gt;&lt;/p&gt;
  
&lt;p&gt;It is hard to know if the hang is still going on, and it is hard to
be sure looking in dmesg is going to work.  If there are lots of other
messages in dmesg the lines might have rotated out of site before they
are noticed.&lt;/p&gt;

&lt;p&gt;While reading through the nfs client implementation in linux kernel
code, I came across some statistics that seem to give a way to detect
it.  The om_timeouts sunrpc value in the kernel will increase every
time the above log entry is inserted into dmesg.  And after digging a
bit further, I discovered that this value show up in
/proc/self/mountstats on Linux.&lt;/p&gt;

&lt;p&gt;The mountstats content seem to be shared between files using the
same file system context, so it is enough to check one of the
mountstats files to get the state of the mount point for the machine.
I assume this will not show lazy umounted NFS points, nor NFS mount
points in a different process context (ie with a different filesystem
view), but that does not worry me.&lt;/p&gt;

&lt;p&gt;The content for a NFS mount point look similar to this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
[...]
device /dev/mapper/Debian-var mounted on /var with fstype ext3
device nfsserver:/mnt/nfsserver/home0 mounted on /mnt/nfsserver/home0 with fstype nfs statvers=1.1
        opts:   rw,vers=3,rsize=65536,wsize=65536,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,soft,nolock,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=129.240.3.145,mountvers=3,mountport=4048,mountproto=udp,local_lock=all
        age:    7863311
        caps:   caps=0x3fe7,wtmult=4096,dtsize=8192,bsize=0,namlen=255
        sec:    flavor=1,pseudoflavor=1
        events: 61063112 732346265 1028140 35486205 16220064 8162542 761447191 71714012 37189 3891185 45561809 110486139 4850138 420353 15449177 296502 52736725 13523379 0 52182 9016896 1231 0 0 0 0 0 
        bytes:  166253035039 219519120027 0 0 40783504807 185466229638 11677877 45561809 
        RPC iostats version: 1.0  p/v: 100003/3 (nfs)
        xprt:   tcp 925 1 6810 0 0 111505412 111480497 109 2672418560317 0 248 53869103 22481820
        per-op statistics
                NULL: 0 0 0 0 0 0 0 0
             GETATTR: 61063106 61063108 0 9621383060 6839064400 453650 77291321 78926132
             SETATTR: 463469 463470 0 92005440 66739536 63787 603235 687943
              LOOKUP: 17021657 17021657 0 3354097764 4013442928 57216 35125459 35566511
              ACCESS: 14281703 14290009 5 2318400592 1713803640 1709282 4865144 7130140
            READLINK: 125 125 0 20472 18620 0 1112 1118
                READ: 4214236 4214237 0 715608524 41328653212 89884 22622768 22806693
               WRITE: 8479010 8494376 22 187695798568 1356087148 178264904 51506907 231671771
              CREATE: 171708 171708 0 38084748 46702272 873 1041833 1050398
               MKDIR: 3680 3680 0 773980 993920 26 23990 24245
             SYMLINK: 903 903 0 233428 245488 6 5865 5917
               MKNOD: 80 80 0 20148 21760 0 299 304
              REMOVE: 429921 429921 0 79796004 61908192 3313 2710416 2741636
               RMDIR: 3367 3367 0 645112 484848 22 5782 6002
              RENAME: 466201 466201 0 130026184 121212260 7075 5935207 5961288
                LINK: 289155 289155 0 72775556 67083960 2199 2565060 2585579
             READDIR: 2933237 2933237 0 516506204 13973833412 10385 3190199 3297917
         READDIRPLUS: 1652839 1652839 0 298640972 6895997744 84735 14307895 14448937
              FSSTAT: 6144 6144 0 1010516 1032192 51 9654 10022
              FSINFO: 2 2 0 232 328 0 1 1
            PATHCONF: 1 1 0 116 140 0 0 0
              COMMIT: 0 0 0 0 0 0 0 0

device binfmt_misc mounted on /proc/sys/fs/binfmt_misc with fstype binfmt_misc
[...]
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The key number to look at is the third number in the per-op list.
It is the number of NFS timeouts experiences per file system
operation.  Here 22 write timeouts and 5 access timeouts.  If these
numbers are increasing, I believe the machine is experiencing NFS
hang.  Unfortunately the timeout value do not start to increase right
away.  The NFS operations need to time out first, and this can take a
while.  The exact timeout value depend on the setup.  For example the
defaults for TCP and UDP mount points are quite different, and the
timeout value is affected by the soft, hard, timeo and retrans NFS
mount options.&lt;/p&gt;

&lt;p&gt;The only way I have been able to get working on Debian and RedHat
Enterprise Linux for getting the timeout count is to peek in /proc/.
But according to
&lt;ahref=&quot;http://docs.oracle.com/cd/E19253-01/816-4555/netmonitor-12/index.html&quot;&gt;Solaris
10 System Administration Guide: Network Services&lt;/a&gt;, the &#39;nfsstat -c&#39;
command can be used to get these timeout values.  But this do not work
on Linux, as far as I can tell.  I
&lt;ahref=&quot;http://bugs.debian.org/857043&quot;&gt;asked Debian about this&lt;/a&gt;,
but have not seen any replies yet.&lt;/p&gt;

&lt;p&gt;Is there a better way to figure out if a Linux NFS client is
experiencing NFS hangs?  Is there a way to detect which processes are
affected?  Is there a way to get the NFS mount going quickly once the
network problem causing the NFS hang has been cleared?  I would very
much welcome some clues, as we regularly run into NFS hangs.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How does it feel to be wiretapped, when you should be doing the wiretapping...</title>
                <link>http://people.skolelinux.org/pere/blog/How_does_it_feel_to_be_wiretapped__when_you_should_be_doing_the_wiretapping___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_does_it_feel_to_be_wiretapped__when_you_should_be_doing_the_wiretapping___.html</guid>
                <pubDate>Wed, 8 Mar 2017 11:50:00 +0100</pubDate>
                <description>&lt;p&gt;So the new president in the United States of America claim to be
surprised to discover that he was wiretapped during the election
before he was elected president.  He even claim this must be illegal.
Well, doh, if it is one thing the confirmations from Snowden
documented, it is that the entire population in USA is wiretapped, one
way or another.  Of course the president candidates were wiretapped,
alongside the senators, judges and the rest of the people in USA.&lt;/p&gt;

&lt;p&gt;Next, the Federal Bureau of Investigation ask the Department of
Justice to go public rejecting the claims that Donald Trump was
wiretapped illegally.  I fail to see the relevance, given that I am
sure the surveillance industry in USA believe they have all the legal
backing they need to conduct mass surveillance on the entire
world.&lt;/p&gt;

&lt;p&gt;There is even the director of the FBI stating that he never saw an
order requesting wiretapping of Donald Trump.  That is not very
surprising, given how the FISA court work, with all its activity being
secret.  Perhaps he only heard about it?&lt;/p&gt;

&lt;p&gt;What I find most sad in this story is how Norwegian journalists
present it.  In a news reports the other day in the radio from the
Norwegian National broadcasting Company (NRK), I heard the journalist
claim that &#39;the FBI denies any wiretapping&#39;, while the reality is that
&#39;the FBI denies any illegal wiretapping&#39;.  There is a fundamental and
important difference, and it make me sad that the journalists are
unable to grasp it.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2017-03-13:&lt;/strong&gt; Look like
&lt;a href=&quot;https://theintercept.com/2017/03/13/rand-paul-is-right-nsa-routinely-monitors-americans-communications-without-warrants/&quot;&gt;The
Intercept report that US Senator Rand Paul confirm what I state above&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Norwegian Bokmål translation of The Debian Administrator&#39;s Handbook complete, proofreading in progress</title>
                <link>http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_translation_of_The_Debian_Administrator_s_Handbook_complete__proofreading_in_progress.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_translation_of_The_Debian_Administrator_s_Handbook_complete__proofreading_in_progress.html</guid>
                <pubDate>Fri, 3 Mar 2017 14:50:00 +0100</pubDate>
                <description>&lt;p&gt;For almost a year now, we have been working on making a Norwegian
Bokmål edition of &lt;a href=&quot;https://debian-handbook.info/&quot;&gt;The Debian
Administrator&#39;s Handbook&lt;/a&gt;.  Now, thanks to the tireless effort of
Ole-Erik, Ingrid and Andreas, the initial translation is complete, and
we are working on the proof reading to ensure consistent language and
use of correct computer science terms.  The plan is to make the book
available on paper, as well as in electronic form.  For that to
happen, the proof reading must be completed and all the figures need
to be translated.  If you want to help out, get in touch.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://people.skolelinux.org/pere/debian-handbook/debian-handbook-nb-NO.pdf&quot;&gt;A

fresh PDF edition&lt;/a&gt; in A4 format (the final book will have smaller
pages) of the book created every morning is available for
proofreading.  If you find any errors, please
&lt;a href=&quot;https://hosted.weblate.org/projects/debian-handbook/&quot;&gt;visit
Weblate and correct the error&lt;/a&gt;.  The
&lt;a href=&quot;http://l.github.io/debian-handbook/stat/nb-NO/index.html&quot;&gt;state
of the translation including figures&lt;/a&gt; is a useful source for those
provide Norwegian bokmål screen shots and figures.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Unlimited randomness with the ChaosKey?</title>
                <link>http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html</guid>
                <pubDate>Wed, 1 Mar 2017 20:50:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago I ordered a small batch of
&lt;a href=&quot;http://altusmetrum.org/ChaosKey/&quot;&gt;the ChaosKey&lt;/a&gt;, a small
USB dongle for generating entropy created by Bdale Garbee and Keith
Packard.  Yesterday it arrived, and I am very happy to report that it
work great!  According to its designers, to get it to work out of the
box, you need the Linux kernel version 4.1 or later.  I tested on a
Debian Stretch machine (kernel version 4.9), and there it worked just
fine, increasing the available entropy very quickly.  I wrote a small
test oneliner to test.  It first print the current entropy level,
drain /dev/random, and then print the entropy level for five seconds.
Here is the situation without the ChaosKey inserted:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
% cat /proc/sys/kernel/random/entropy_avail; \
  dd bs=1M if=/dev/random of=/dev/null count=1; \
  for n in $(seq 1 5); do \
     cat /proc/sys/kernel/random/entropy_avail; \
     sleep 1; \
  done
300
0+1 oppføringer inn
0+1 oppføringer ut
28 byte kopiert, 0,000264565 s, 106 kB/s
4
8
12
17
21
%
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The entropy level increases by 3-4 every second.  In such case any
application requiring random bits (like a HTTPS enabled web server)
will halt and wait for more entrpy.  And here is the situation with
the ChaosKey inserted:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
% cat /proc/sys/kernel/random/entropy_avail; \
  dd bs=1M if=/dev/random of=/dev/null count=1; \
  for n in $(seq 1 5); do \
     cat /proc/sys/kernel/random/entropy_avail; \
     sleep 1; \
  done
1079
0+1 oppføringer inn
0+1 oppføringer ut
104 byte kopiert, 0,000487647 s, 213 kB/s
433
1028
1031
1035
1038
%
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;Quite the difference. :) I bought a few more than I need, in case
someone want to buy one here in Norway. :)&lt;/p&gt;

&lt;p&gt;Update: The dongle was presented at Debconf last year.  You might
find &lt;a href=&quot;https://debconf16.debconf.org/talks/94/&quot;&gt;the talk
recording illuminating&lt;/a&gt;.  It explains exactly what the source of
randomness is, if you are unable to spot it from the schema drawing
available from the ChaosKey web site linked at the start of this blog
post.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Detect OOXML files with undefined behaviour?</title>
                <link>http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</guid>
                <pubDate>Tue, 21 Feb 2017 00:20:00 +0100</pubDate>
                <description>&lt;p&gt;I just noticed
&lt;a href=&quot;http://www.arkivrad.no/aktuelt/riksarkivarens-forskrift-pa-horing&quot;&gt;the
new Norwegian proposal for archiving rules in the goverment&lt;/a&gt; list
&lt;a href=&quot;http://www.ecma-international.org/publications/standards/Ecma-376.htm&quot;&gt;ECMA-376&lt;/a&gt;
/ ISO/IEC 29500 (aka OOXML) as valid formats to put in long term
storage.  Luckily such files will only be accepted based on
pre-approval from the National Archive.  Allowing OOXML files to be
used for long term storage might seem like a good idea as long as we
forget that there are plenty of ways for a &quot;valid&quot; OOXML document to
have content with no defined interpretation in the standard, which
lead to a question and an idea.&lt;/p&gt;

&lt;p&gt;Is there any tool to detect if a OOXML document depend on such
undefined behaviour?  It would be useful for the National Archive (and
anyone else interested in verifying that a document is well defined)
to have such tool available when considering to approve the use of
OOXML.  I&#39;m aware of the
&lt;a href=&quot;https://github.com/arlm/officeotron/&quot;&gt;officeotron OOXML
validator&lt;/a&gt;, but do not know how complete it is nor if it will
report use of undefined behaviour.  Are there other similar tools
available?  Please send me an email if you know of any such tool.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Ruling ignored our objections to the seizure of popcorn-time.no (#domstolkontroll)</title>
                <link>http://people.skolelinux.org/pere/blog/Ruling_ignored_our_objections_to_the_seizure_of_popcorn_time_no___domstolkontroll_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Ruling_ignored_our_objections_to_the_seizure_of_popcorn_time_no___domstolkontroll_.html</guid>
                <pubDate>Mon, 13 Feb 2017 21:30:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago, we received the ruling from
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/A_day_in_court_challenging_seizure_of_popcorn_time_no_for__domstolkontroll.html&quot;&gt;my
day in court&lt;/a&gt;.  The case in question is a challenge of the seizure
of the DNS domain popcorn-time.no.  The ruling simply did not mention
most of our arguments, and seemed to take everything ØKOKRIM said at
face value, ignoring our demonstration and explanations.  But it is
hard to tell for sure, as we still have not seen most of the documents
in the case and thus were unprepared and unable to contradict several
of the claims made in court by the opposition.  We are considering an
appeal, but it is partly a question of funding, as it is costing us
quite a bit to pay for our lawyer.  If you want to help, please
&lt;a href=&quot;http://www.nuug.no/dns-beslag-donasjon.shtml&quot;&gt;donate to the
NUUG defense fund&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The details of the case, as far as we know it, is available in
Norwegian from
&lt;a href=&quot;https://www.nuug.no/news/tags/dns-domenebeslag/&quot;&gt;the NUUG
blog&lt;/a&gt;.  This also include
&lt;a href=&quot;https://www.nuug.no/news/Avslag_etter_rettslig_h_ring_om_DNS_beslaget___vurderer_veien_videre.shtml&quot;&gt;the
ruling itself&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A day in court challenging seizure of popcorn-time.no for #domstolkontroll</title>
                <link>http://people.skolelinux.org/pere/blog/A_day_in_court_challenging_seizure_of_popcorn_time_no_for__domstolkontroll.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_day_in_court_challenging_seizure_of_popcorn_time_no_for__domstolkontroll.html</guid>
                <pubDate>Fri, 3 Feb 2017 11:10:00 +0100</pubDate>
                <description>&lt;p align=&quot;center&quot;&gt;&lt;img width=&quot;70%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2017-02-01-popcorn-time-in-court.jpeg&quot;&gt;&lt;/p&gt;

&lt;p&gt;On Wednesday, I spent the entire day in court in Follo Tingrett
representing &lt;a href=&quot;https://www.nuug.no/&quot;&gt;the member association
NUUG&lt;/a&gt;, alongside &lt;a href=&quot;https://www.efn.no/&quot;&gt;the member
association EFN&lt;/a&gt; and &lt;a href=&quot;http://www.imc.no&quot;&gt;the DNS registrar
IMC&lt;/a&gt;, challenging the seizure of the DNS name popcorn-time.no.  It
was interesting to sit in a court of law for the first time in my
life.  Our team can be seen in the picture above: attorney Ola
Tellesbø, EFN board member Tom Fredrik Blenning, IMC CEO Morten Emil
Eriksen and NUUG board member Petter Reinholdtsen.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.domstol.no/no/Enkelt-domstol/follo-tingrett/Nar-gar-rettssaken/Beramming/?cid=AAAA1701301512081262234UJFBVEZZZZZEJBAvtale&quot;&gt;The
case at hand&lt;/a&gt; is that the Norwegian National Authority for
Investigation and Prosecution of Economic and Environmental Crime (aka
Økokrim) decided on their own, to seize a DNS domain early last
year, without following
&lt;a href=&quot;https://www.norid.no/no/regelverk/navnepolitikk/#link12&quot;&gt;the
official policy of the Norwegian DNS authority&lt;/a&gt; which require a
court decision.  The web site in question was a site covering Popcorn
Time.  And Popcorn Time is the name of a technology with both legal
and illegal applications.  Popcorn Time is a client combining
searching a Bittorrent directory available on the Internet with
downloading/distribute content via Bittorrent and playing the
downloaded content on screen.  It can be used illegally if it is used
to distribute content against the will of the right holder, but it can
also be used legally to play a lot of content, for example the
millions of movies
&lt;a href=&quot;https://archive.org/details/movies&quot;&gt;available from the
Internet Archive&lt;/a&gt; or the collection
&lt;a href=&quot;http://vodo.net/films/&quot;&gt;available from Vodo&lt;/a&gt;.  We created
&lt;a href=&quot;magnet:?xt=urn:btih:86c1802af5a667ca56d3918aecb7d3c0f7173084&amp;dn=PresentasjonFolloTingrett.mov&amp;tr=udp%3A%2F%2Fpublic.popcorn-tracker.org%3A6969%2Fannounce&quot;&gt;a
video demonstrating legally use of Popcorn Time&lt;/a&gt; and played it in
Court.  It can of course be downloaded using Bittorrent.&lt;/p&gt;

&lt;p&gt;I did not quite know what to expect from a day in court.  The
government held on to their version of the story and we held on to
ours, and I hope the judge is able to make sense of it all.  We will
know in two weeks time.  Unfortunately I do not have high hopes, as
the Government have the upper hand here with more knowledge about the
case, better training in handling criminal law and in general higher
standing in the courts than fairly unknown DNS registrar and member
associations.  It is expensive to be right also in Norway.  So far the
case have cost more than NOK 70 000,-.  To help fund the case, NUUG
and EFN have asked for donations, and managed to collect around NOK 25
000,- so far.  Given the presentation from the Government, I expect
the government to appeal if the case go our way.  And if the case do
not go our way, I hope we have enough funding to appeal.&lt;/p&gt;

&lt;p&gt;From the other side came two people from Økokrim.  On the benches,
appearing to be part of the group from the government were two people
from the Simonsen Vogt Wiik lawyer office, and three others I am not
quite sure who was.  Økokrim had proposed to present two witnesses
from The Motion Picture Association, but this was rejected because
they did not speak Norwegian and it was a bit late to bring in a
translator, but perhaps the two from MPA were present anyway.  All
seven appeared to know each other.  Good to see the case is take
seriously.&lt;/p&gt;

&lt;p&gt;If you, like me, believe the courts should be involved before a DNS
domain is hijacked by the government, or you believe the Popcorn Time
technology have a lot of useful and legal applications, I suggest you
too &lt;a href=&quot;http://www.nuug.no/dns-beslag-donasjon.shtml&quot;&gt;donate to
the NUUG defense fund&lt;/a&gt;.  Both Bitcoin and bank transfer are
available. If NUUG get more than we need for the legal action (very
unlikely), the rest will be spend promoting free software, open
standards and unix-like operating systems in Norway, so no matter what
happens the money will be put to good use.&lt;/p&gt;

&lt;p&gt;If you want to lean more about the case, I recommend you check out
&lt;a href=&quot;https://www.nuug.no/news/tags/dns-domenebeslag/&quot;&gt;the blog
posts from NUUG covering the case&lt;/a&gt;.  They cover the legal arguments
on both sides.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Where did that package go? &amp;mdash; geolocated IP traceroute</title>
                <link>http://people.skolelinux.org/pere/blog/Where_did_that_package_go___mdash__geolocated_IP_traceroute.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Where_did_that_package_go___mdash__geolocated_IP_traceroute.html</guid>
                <pubDate>Mon, 9 Jan 2017 12:20:00 +0100</pubDate>
                <description>&lt;p&gt;Did you ever wonder where the web trafic really flow to reach the
web servers, and who own the network equipment it is flowing through?
It is possible to get a glimpse of this from using traceroute, but it
is hard to find all the details.  Many years ago, I wrote a system to
map the Norwegian Internet (trying to figure out if our plans for a
network game service would get low enough latency, and who we needed
to talk to about setting up game servers close to the users.  Back
then I used traceroute output from many locations (I asked my friends
to run a script and send me their traceroute output) to create the
graph and the map.  The output from traceroute typically look like
this:

&lt;p&gt;&lt;pre&gt;
traceroute to www.stortinget.no (85.88.67.10), 30 hops max, 60 byte packets
 1  uio-gw10.uio.no (129.240.202.1)  0.447 ms  0.486 ms  0.621 ms
 2  uio-gw8.uio.no (129.240.24.229)  0.467 ms  0.578 ms  0.675 ms
 3  oslo-gw1.uninett.no (128.39.65.17)  0.385 ms  0.373 ms  0.358 ms
 4  te3-1-2.br1.fn3.as2116.net (193.156.90.3)  1.174 ms  1.172 ms  1.153 ms
 5  he16-1-1.cr1.san110.as2116.net (195.0.244.234)  2.627 ms he16-1-1.cr2.oslosda310.as2116.net (195.0.244.48)  3.172 ms he16-1-1.cr1.san110.as2116.net (195.0.244.234)  2.857 ms
 6  ae1.ar8.oslosda310.as2116.net (195.0.242.39)  0.662 ms  0.637 ms ae0.ar8.oslosda310.as2116.net (195.0.242.23)  0.622 ms
 7  89.191.10.146 (89.191.10.146)  0.931 ms  0.917 ms  0.955 ms
 8  * * *
 9  * * *
[...]
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;This show the DNS names and IP addresses of (at least some of the)
network equipment involved in getting the data traffic from me to the
www.stortinget.no server, and how long it took in milliseconds for a
package to reach the equipment and return to me.  Three packages are
sent, and some times the packages do not follow the same path.  This
is shown for hop 5, where three different IP addresses replied to the
traceroute request.&lt;/p&gt;

&lt;p&gt;There are many ways to measure trace routes.  Other good traceroute
implementations I use are traceroute (using ICMP packages) mtr (can do
both ICMP, UDP and TCP) and scapy (python library with ICMP, UDP, TCP
traceroute and a lot of other capabilities).  All of them are easily
available in &lt;a href=&quot;https://www.debian.org/&quot;&gt;Debian&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This time around, I wanted to know the geographic location of
different route points, to visualize how visiting a web page spread
information about the visit to a lot of servers around the globe.  The
background is that a web site today often will ask the browser to get
from many servers the parts (for example HTML, JSON, fonts,
JavaScript, CSS, video) required to display the content.  This will
leak information about the visit to those controlling these servers
and anyone able to peek at the data traffic passing by (like your ISP,
the ISPs backbone provider, FRA, GCHQ, NSA and others).&lt;/p&gt;

&lt;p&gt;Lets pick an example, the Norwegian parliament web site
www.stortinget.no.  It is read daily by all members of parliament and
their staff, as well as political journalists, activits and many other
citizens of Norway.  A visit to the www.stortinget.no web site will
ask your browser to contact 8 other servers: ajax.googleapis.com,
insights.hotjar.com, script.hotjar.com, static.hotjar.com,
stats.g.doubleclick.net, www.google-analytics.com,
www.googletagmanager.com and www.netigate.se.  I extracted this by
asking &lt;a href=&quot;http://phantomjs.org/&quot;&gt;PhantomJS&lt;/a&gt; to visit the
Stortinget web page and tell me all the URLs PhantomJS downloaded to
render the page (in HAR format using
&lt;a href=&quot;https://github.com/ariya/phantomjs/blob/master/examples/netsniff.js&quot;&gt;their
netsniff example&lt;/a&gt;.  I am very grateful to Gorm for showing me how
to do this).  My goal is to visualize network traces to all IP
addresses behind these DNS names, do show where visitors personal
information is spread when visiting the page.&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;a href=&quot;www.stortinget.no-geoip.kml&quot;&gt;&lt;img
src=&quot;http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-geoip-small.png&quot; alt=&quot;map of combined traces for URLs used by www.stortinget.no using GeoIP&quot;/&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;When I had a look around for options, I could not find any good
free software tools to do this, and decided I needed my own traceroute
wrapper outputting KML based on locations looked up using GeoIP.  KML
is easy to work with and easy to generate, and understood by several
of the GIS tools I have available.  I got good help from by NUUG
colleague Anders Einar with this, and the result can be seen in
&lt;a href=&quot;https://github.com/petterreinholdtsen/kmltraceroute&quot;&gt;my
kmltraceroute git repository&lt;/a&gt;.  Unfortunately, the quality of the
free GeoIP databases I could find (and the for-pay databases my
friends had access to) is not up to the task.  The IP addresses of
central Internet infrastructure would typically be placed near the
controlling companies main office, and not where the router is really
located, as you can see from &lt;a href=&quot;www.stortinget.no-geoip.kml&quot;&gt;the
KML file I created&lt;/a&gt; using the GeoLite City dataset from MaxMind.

&lt;p align=&quot;center&quot;&gt;&lt;a href=&quot;http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-scapy.svg&quot;&gt;&lt;img
src=&quot;http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-scapy-small.png&quot; alt=&quot;scapy traceroute graph for URLs used by www.stortinget.no&quot;/&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;I also had a look at the visual traceroute graph created by
&lt;a href=&quot;http://www.secdev.org/projects/scapy/&quot;&gt;the scrapy project&lt;/a&gt;,
showing IP network ownership (aka AS owner) for the IP address in
question.
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-scapy.svg&quot;&gt;The
graph display a lot of useful information about the traceroute in SVG
format&lt;/a&gt;, and give a good indication on who control the network
equipment involved, but it do not include geolocation.  This graph
make it possible to see the information is made available at least for
UNINETT, Catchcom, Stortinget, Nordunet, Google, Amazon, Telia, Level
3 Communications and NetDNA.&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;a href=&quot;https://geotraceroute.com/index.php?node=4&amp;host=www.stortinget.no&quot;&gt;&lt;img
src=&quot;http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-geotraceroute-small.png&quot; alt=&quot;example geotraceroute view for www.stortinget.no&quot;/&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;In the process, I came across the
&lt;a href=&quot;https://geotraceroute.com/&quot;&gt;web service GeoTraceroute&lt;/a&gt; by
Salim Gasmi.  Its methology of combining guesses based on DNS names,
various location databases and finally use latecy times to rule out
candidate locations seemed to do a very good job of guessing correct
geolocation.  But it could only do one trace at the time, did not have
a sensor in Norway and did not make the geolocations easily available
for postprocessing.  So I contacted the developer and asked if he
would be willing to share the code (he refused until he had time to
clean it up), but he was interested in providing the geolocations in a
machine readable format, and willing to set up a sensor in Norway.  So
since yesterday, it is possible to run traces from Norway in this
service thanks to a sensor node set up by
&lt;a href=&quot;https://www.nuug.no/&quot;&gt;the NUUG assosiation&lt;/a&gt;, and get the
trace in KML format for further processing.&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;a href=&quot;http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-geotraceroute-kml-join.kml&quot;&gt;&lt;img
src=&quot;http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-geotraceroute-kml-join.png&quot; alt=&quot;map of combined traces for URLs used by www.stortinget.no using geotraceroute&quot;/&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Here we can see a lot of trafic passes Sweden on its way to
Denmark, Germany, Holland and Ireland.  Plenty of places where the
Snowden confirmations verified the traffic is read by various actors
without your best interest as their top priority.&lt;/p&gt;

&lt;p&gt;Combining KML files is trivial using a text editor, so I could loop
over all the hosts behind the urls imported by www.stortinget.no and
ask for the KML file from GeoTraceroute, and create a combined KML
file with all the traces (unfortunately only one of the IP addresses
behind the DNS name is traced this time.  To get them all, one would
have to request traces using IP number instead of DNS names from
GeoTraceroute).  That might be the next step in this project.&lt;/p&gt;

&lt;p&gt;Armed with these tools, I find it a lot easier to figure out where
the IP traffic moves and who control the boxes involved in moving it.
And every time the link crosses for example the Swedish border, we can
be sure Swedish Signal Intelligence (FRA) is listening, as GCHQ do in
Britain and NSA in USA and cables around the globe.  (Hm, what should
we tell them? :) Keep that in mind if you ever send anything
unencrypted over the Internet.&lt;/p&gt;

&lt;p&gt;PS: KML files are drawn using
&lt;a href=&quot;http://ivanrublev.me/kml/&quot;&gt;the KML viewer from Ivan
Rublev&lt;a/&gt;, as it was less cluttered than the local Linux application
Marble.  There are heaps of other options too.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Introducing ical-archiver to split out old iCalendar entries</title>
                <link>http://people.skolelinux.org/pere/blog/Introducing_ical_archiver_to_split_out_old_iCalendar_entries.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Introducing_ical_archiver_to_split_out_old_iCalendar_entries.html</guid>
                <pubDate>Wed, 4 Jan 2017 12:20:00 +0100</pubDate>
                <description>&lt;p&gt;Do you have a large &lt;a href=&quot;https://icalendar.org/&quot;&gt;iCalendar&lt;/a&gt;
file with lots of old entries, and would like to archive them to save
space and resources?  At least those of us using KOrganizer know that
turning on and off an event set become slower and slower the more
entries are in the set.  While working on migrating our calendars to a
&lt;a href=&quot;http://radicale.org/&quot;&gt;Radicale CalDAV server&lt;/a&gt; on our
&lt;a href=&quot;https://freedomboxfoundation.org/&quot;&gt;Freedombox server&lt;/a/&gt;, my
loved one wondered if I could find a way to split up the calendar file
she had in KOrganizer, and I set out to write a tool.  I spent a few
days writing and polishing the system, and it is now ready for general
consumption.  The
&lt;a href=&quot;https://github.com/petterreinholdtsen/ical-archiver&quot;&gt;code for
ical-archiver&lt;/a&gt; is publicly available from a git repository on
github.  The system is written in Python and depend on
&lt;a href=&quot;http://eventable.github.io/vobject/&quot;&gt;the vobject Python
module&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;To use it, locate the iCalendar file you want to operate on and
give it as an argument to the ical-archiver script.  This will
generate a set of new files, one file per component type per year for
all components expiring more than two years in the past.  The vevent,
vtodo and vjournal entries are handled by the script.  The remaining
entries are stored in a &#39;remaining&#39; file.&lt;/p&gt;

&lt;p&gt;This is what a test run can look like:

&lt;p&gt;&lt;pre&gt;
% ical-archiver t/2004-2016.ics 
Found 3612 vevents
Found 6 vtodos
Found 2 vjournals
Writing t/2004-2016.ics-subset-vevent-2004.ics
Writing t/2004-2016.ics-subset-vevent-2005.ics
Writing t/2004-2016.ics-subset-vevent-2006.ics
Writing t/2004-2016.ics-subset-vevent-2007.ics
Writing t/2004-2016.ics-subset-vevent-2008.ics
Writing t/2004-2016.ics-subset-vevent-2009.ics
Writing t/2004-2016.ics-subset-vevent-2010.ics
Writing t/2004-2016.ics-subset-vevent-2011.ics
Writing t/2004-2016.ics-subset-vevent-2012.ics
Writing t/2004-2016.ics-subset-vevent-2013.ics
Writing t/2004-2016.ics-subset-vevent-2014.ics
Writing t/2004-2016.ics-subset-vjournal-2007.ics
Writing t/2004-2016.ics-subset-vjournal-2011.ics
Writing t/2004-2016.ics-subset-vtodo-2012.ics
Writing t/2004-2016.ics-remaining.ics
%
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;As you can see, the original file is untouched and new files are
written with names derived from the original file.  If you are happy
with their content, the *-remaining.ics file can replace the original
the the others can be archived or imported as historical calendar
collections.&lt;/p&gt;

&lt;p&gt;The script should probably be improved a bit.  The error handling
when discovering broken entries is not good, and I am not sure yet if
it make sense to split different entry types into separate files or
not.  The program is thus likely to change.  If you find it
interesting, please get in touch. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Appstream just learned how to map hardware to packages too!</title>
                <link>http://people.skolelinux.org/pere/blog/Appstream_just_learned_how_to_map_hardware_to_packages_too_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Appstream_just_learned_how_to_map_hardware_to_packages_too_.html</guid>
                <pubDate>Fri, 23 Dec 2016 10:30:00 +0100</pubDate>
                <description>&lt;p&gt;I received a very nice Christmas present today.  As my regular
readers probably know, I have been working on the
&lt;a href=&quot;http://packages.qa.debian.org/isenkram&quot;&gt;the Isenkram
system&lt;/a&gt; for many years.  The goal of the Isenkram system is to make
it easier for users to figure out what to install to get a given piece
of hardware to work in Debian, and a key part of this system is a way
to map hardware to packages.  Isenkram have its own mapping database,
and also uses data provided by each package using the AppStream
metadata format.  And today,
&lt;a href=&quot;https://tracker.debian.org/pkg/appstream&quot;&gt;AppStream&lt;/a&gt; in
Debian learned to look up hardware the same way Isenkram is doing it,
ie using fnmatch():&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
% appstreamcli what-provides modalias \
  usb:v1130p0202d0100dc00dsc00dp00ic03isc00ip00in00
Identifier: pymissile [generic]
Name: pymissile
Summary: Control original Striker USB Missile Launcher
Package: pymissile
% appstreamcli what-provides modalias usb:v0694p0002d0000
Identifier: libnxt [generic]
Name: libnxt
Summary: utility library for talking to the LEGO Mindstorms NXT brick
Package: libnxt
---
Identifier: t2n [generic]
Name: t2n
Summary: Simple command-line tool for Lego NXT
Package: t2n
---
Identifier: python-nxt [generic]
Name: python-nxt
Summary: Python driver/interface/wrapper for the Lego Mindstorms NXT robot
Package: python-nxt
---
Identifier: nbc [generic]
Name: nbc
Summary: C compiler for LEGO Mindstorms NXT bricks
Package: nbc
%
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;A similar query can be done using the combined AppStream and
Isenkram databases using the isenkram-lookup tool:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
% isenkram-lookup usb:v1130p0202d0100dc00dsc00dp00ic03isc00ip00in00
pymissile
% isenkram-lookup usb:v0694p0002d0000
libnxt
nbc
python-nxt
t2n
%
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;You can find modalias values relevant for your machine using
&lt;tt&gt;cat $(find /sys/devices/ -name modalias)&lt;/tt&gt;.

&lt;p&gt;If you want to make this system a success and help Debian users
make the most of the hardware they have, please
help&lt;a href=&quot;https://wiki.debian.org/AppStream/Guidelines&quot;&gt;add
AppStream metadata for your package following the guidelines&lt;/a&gt;
documented in the wiki.  So far only 11 packages provide such
information, among the several hundred hardware specific packages in
Debian. The Isenkram database on the other hand contain 101 packages,
mostly related to USB dongles.  Most of the packages with hardware
mapping in AppStream are LEGO Mindstorms related, because I have, as
part of my involvement in
&lt;a href=&quot;https://wiki.debian.org/LegoDesigners&quot;&gt;the Debian LEGO
team&lt;/a&gt; given priority to making sure LEGO users get proposed the
complete set of packages in Debian for that particular hardware.  The
team also got a nice Christmas present today.  The
&lt;a href=&quot;https://tracker.debian.org/pkg/nxt-firmware&quot;&gt;nxt-firmware
package&lt;/a&gt; made it into Debian.  With this package in place, it is
now possible to use the LEGO Mindstorms NXT unit with only free
software, as the nxt-firmware package contain the source and firmware
binaries for the NXT brick.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Isenkram updated with a lot more hardware-package mappings</title>
                <link>http://people.skolelinux.org/pere/blog/Isenkram_updated_with_a_lot_more_hardware_package_mappings.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Isenkram_updated_with_a_lot_more_hardware_package_mappings.html</guid>
                <pubDate>Tue, 20 Dec 2016 11:55:00 +0100</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://packages.qa.debian.org/isenkram&quot;&gt;The Isenkram
system&lt;/a&gt; I wrote two years ago to make it easier in Debian to find
and install packages to get your hardware dongles to work, is still
going strong.  It is a system to look up the hardware present on or
connected to the current system, and map the hardware to Debian
packages.  It can either be done using the tools in isenkram-cli or
using the user space daemon in the isenkram package.  The latter will
notify you, when inserting new hardware, about what packages to
install to get the dongle working.  It will even provide a button to
click on to ask packagekit to install the packages.&lt;/p&gt;

&lt;p&gt;Here is an command line example from my Thinkpad laptop:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
% isenkram-lookup  
bluez
cheese
ethtool
fprintd
fprintd-demo
gkrellm-thinkbat
hdapsd
libpam-fprintd
pidgin-blinklight
thinkfan
tlp
tp-smapi-dkms
tp-smapi-source
tpb
%
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;It can also list the firware package providing firmware requested
by the load kernel modules, which in my case is an empty list because
I have all the firmware my machine need:

&lt;p&gt;&lt;pre&gt;
% /usr/sbin/isenkram-autoinstall-firmware -l
info: did not find any firmware files requested by loaded kernel modules.  exiting
%
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The last few days I had a look at several of the around 250
packages in Debian with udev rules.  These seem like good candidates
to install when a given hardware dongle is inserted, and I found
several that should be proposed by isenkram.  I have not had time to
check all of them, but am happy to report that now there are 97
packages packages mapped to hardware by Isenkram.  11 of these
packages provide hardware mapping using AppStream, while the rest are
listed in the modaliases file provided in isenkram.&lt;/p&gt;

&lt;p&gt;These are the packages with hardware mappings at the moment.  The
&lt;strong&gt;marked packages&lt;/strong&gt; are also announcing their hardware
support using AppStream, for everyone to use:&lt;/p&gt;

&lt;p&gt;air-quality-sensor, alsa-firmware-loaders, argyll,
&lt;strong&gt;array-info&lt;/strong&gt;, avarice, avrdude, b43-fwcutter,
bit-babbler, bluez, bluez-firmware, &lt;strong&gt;brltty&lt;/strong&gt;,
&lt;strong&gt;broadcom-sta-dkms&lt;/strong&gt;, calibre, cgminer, cheese, colord,
&lt;strong&gt;colorhug-client&lt;/strong&gt;, dahdi-firmware-nonfree, dahdi-linux,
dfu-util, dolphin-emu, ekeyd, ethtool, firmware-ipw2x00, fprintd,
fprintd-demo, &lt;strong&gt;galileo&lt;/strong&gt;, gkrellm-thinkbat, gphoto2,
gpsbabel, gpsbabel-gui, gpsman, gpstrans, gqrx-sdr, gr-fcdproplus,
gr-osmosdr, gtkpod, hackrf, hdapsd, hdmi2usb-udev, hpijs-ppds, hplip,
ipw3945-source, ipw3945d, kde-config-tablet, kinect-audio-setup,
&lt;strong&gt;libnxt&lt;/strong&gt;, libpam-fprintd, &lt;strong&gt;lomoco&lt;/strong&gt;,
madwimax, minidisc-utils, mkgmap, msi-keyboard, mtkbabel,
&lt;strong&gt;nbc&lt;/strong&gt;, &lt;strong&gt;nqc&lt;/strong&gt;, nut-hal-drivers, ola,
open-vm-toolbox, open-vm-tools, openambit, pcgminer, pcmciautils,
pcscd, pidgin-blinklight, printer-driver-splix,
&lt;strong&gt;pymissile&lt;/strong&gt;, python-nxt, qlandkartegt,
qlandkartegt-garmin, rosegarden, rt2x00-source, sispmctl,
soapysdr-module-hackrf, solaar, squeak-plugins-scratch, sunxi-tools,
&lt;strong&gt;t2n&lt;/strong&gt;, thinkfan, thinkfinger-tools, tlp, tp-smapi-dkms,
tp-smapi-source, tpb, tucnak, uhd-host, usbmuxd, viking,
virtualbox-ose-guest-x11, w1retap, xawtv, xserver-xorg-input-vmmouse,
xserver-xorg-input-wacom, xserver-xorg-video-qxl,
xserver-xorg-video-vmware, yubikey-personalization and
zd1211-firmware&lt;/p&gt;

&lt;p&gt;If you know of other packages, please let me know with a wishlist
bug report against the isenkram-cli package, and ask the package
maintainer to
&lt;a href=&quot;https://wiki.debian.org/AppStream/Guidelines&quot;&gt;add AppStream
metadata according to the guidelines&lt;/a&gt; to provide the information
for everyone.  In time, I hope to get rid of the isenkram specific
hardware mapping and depend exclusively on AppStream.&lt;/p&gt;

&lt;p&gt;Note, the AppStream metadata for broadcom-sta-dkms is matching too
much hardware, and suggest that the package with with any ethernet
card.  See &lt;a href=&quot;http://bugs.debian.org/838735&quot;&gt;bug #838735&lt;/a&gt; for
the details.  I hope the maintainer find time to address it soon.  In
the mean time I provide an override in isenkram.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Oolite, a life in space as vagabond and mercenary - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/Oolite__a_life_in_space_as_vagabond_and_mercenary___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Oolite__a_life_in_space_as_vagabond_and_mercenary___nice_free_software.html</guid>
                <pubDate>Sun, 11 Dec 2016 11:40:00 +0100</pubDate>
                <description>&lt;p align=&quot;center&quot;&gt;&lt;img width=&quot;70%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2016-12-11-nice-oolite.png&quot;/&gt;&lt;/p&gt;

&lt;p&gt;In my early years, I played
&lt;a href=&quot;http://wiki.alioth.net/index.php/Classic_Elite&quot;&gt;the epic game
Elite&lt;/a&gt; on my PC.  I spent many months trading and fighting in
space, and reached the &#39;elite&#39; fighting status before I moved on.  The
original Elite game was available on Commodore 64 and the IBM PC
edition I played had a 64 KB executable.  I am still impressed today
that the authors managed to squeeze both a 3D engine and details about
more than 2000 planet systems across 7 galaxies into a binary so
small.&lt;/p&gt;

&lt;p&gt;I have known about &lt;a href=&quot;http://www.oolite.org/&quot;&gt;the free
software game Oolite inspired by Elite&lt;/a&gt; for a while, but did not
really have time to test it properly until a few days ago.  It was
great to discover that my old knowledge about trading routes were
still valid.  But my fighting and flying abilities were gone, so I had
to retrain to be able to dock on a space station.  And I am still not
able to make much resistance when I am attacked by pirates, so I
bougth and mounted the most powerful laser in the rear to be able to
put up at least some resistance while fleeing for my life. :)&lt;/p&gt;

&lt;p&gt;When playing Elite in the late eighties, I had to discover
everything on my own, and I had long lists of prices seen on different
planets to be able to decide where to trade what.  This time I had the
advantages of the
&lt;a href=&quot;http://wiki.alioth.net/index.php/Main_Page&quot;&gt;Elite wiki&lt;/a&gt;,
where information about each planet is easily available with common
price ranges and suggested trading routes.  This improved my ability
to earn money and I have been able to earn enough to buy a lot of
useful equipent in a few days.  I believe I originally played for
months before I could get a docking computer, while now I could get it
after less then a week.&lt;/p&gt;

&lt;p&gt;If you like science fiction and dreamed of a life as a vagabond in
space, you should try out Oolite.  It is available for Linux, MacOSX
and Windows, and is included in Debian and derivatives since 2011.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Quicker Debian installations using eatmydata</title>
                <link>http://people.skolelinux.org/pere/blog/Quicker_Debian_installations_using_eatmydata.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Quicker_Debian_installations_using_eatmydata.html</guid>
                <pubDate>Fri, 25 Nov 2016 14:50:00 +0100</pubDate>
                <description>&lt;p&gt;Two years ago, I did some experiments with eatmydata and the Debian
installation system, observing how using
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Speeding_up_the_Debian_installer_using_eatmydata_and_dpkg_divert.html&quot;&gt;eatmydata
could speed up the installation&lt;/a&gt; quite a bit.  My testing measured
speedup around 20-40 percent for Debian Edu, where we install around
1000 packages from within the installer.  The eatmydata package
provide a way to disable/delay file system flushing.  This is a bit
risky in the general case, as files that should be stored on disk will
stay only in memory a bit longer than expected, causing problems if a
machine crashes at an inconvenient time.  But for an installation, if
the machine crashes during installation the process is normally
restarted, and avoiding disk operations as much as possible to speed
up the process make perfect sense.

&lt;p&gt;I added code in the Debian Edu specific installation code to enable
&lt;a href=&quot;https://tracker.debian.org/pkg/libeatmydata&quot;&gt;eatmydata&lt;/a&gt;,
but did not have time to push it any further.  But a few months ago I
picked it up again and worked with the libeatmydata package maintainer
Mattia Rizzolo to make it easier for everyone to get this installation
speedup in Debian.  Thanks to our cooperation There is now an
eatmydata-udeb package in Debian testing and unstable, and simply
enabling/installing it in debian-installer (d-i) is enough to get the
quicker installations.  It can be enabled using preseeding.  The
following untested kernel argument should do the trick:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
preseed/early_command=&quot;anna-install eatmydata-udeb&quot;
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;This should ask d-i to install the package inside the d-i
environment early in the installation sequence.  Having it installed
in d-i in turn will make sure the relevant scripts are called just
after debootstrap filled /target/ with the freshly installed Debian
system to configure apt to run dpkg with eatmydata.  This is enough to
speed up the installation process.  There is a proposal to
&lt;a href=&quot;https://bugs.debian.org/841153&quot;&gt;extend the idea a bit further
by using /etc/ld.so.preload instead of apt.conf&lt;/a&gt;, but I have not
tested its impact.&lt;/p&gt;

</description>
        </item>
        
        <item>
                <title>Coz profiler for multi-threaded software is now in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Coz_profiler_for_multi_threaded_software_is_now_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Coz_profiler_for_multi_threaded_software_is_now_in_Debian.html</guid>
                <pubDate>Sun, 13 Nov 2016 12:30:00 +0100</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://coz-profiler.org/&quot;&gt;The Coz profiler&lt;/a&gt;, a nice
profiler able to run benchmarking experiments on the instrumented
multi-threaded program, finally
&lt;a href=&quot;https://tracker.debian.org/pkg/coz-profiler&quot;&gt;made it into
Debian unstable yesterday&lt;/A&gt;.  Lluís Vilanova and I have spent many
months since
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Coz_can_help_you_find_bottlenecks_in_multi_threaded_software___nice_free_software.html&quot;&gt;I
blogged about the coz tool&lt;/a&gt; in August working with upstream to make
it suitable for Debian.  There are still issues with clang
compatibility, inline assembly only working x86 and minimized
JavaScript libraries.&lt;/p&gt;

&lt;p&gt;To test it, install &#39;coz-profiler&#39; using apt and run it like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
&lt;tt&gt;coz run --- /path/to/binary-with-debug-info&lt;/tt&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;This will produce a profile.coz file in the current working
directory with the profiling information.  This is then given to a
JavaScript application provided in the package and available from
&lt;a href=&quot;http://plasma-umass.github.io/coz/&quot;&gt;a project web page&lt;/a&gt;.
To start the local copy, invoke it in a browser like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
&lt;tt&gt;sensible-browser /usr/share/coz-profiler/viewer/index.htm&lt;/tt&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;See the project home page and the
&lt;a href=&quot;https://www.usenix.org/publications/login/summer2016/curtsinger&quot;&gt;USENIX
;login: article on Coz&lt;/a&gt; for more information on how it is
working.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to talk with your loved ones in private</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_talk_with_your_loved_ones_in_private.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_talk_with_your_loved_ones_in_private.html</guid>
                <pubDate>Mon, 7 Nov 2016 10:25:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago I ran a very biased and informal survey to get an
idea about what options are being used to communicate with end to end
encryption with friends and family.  I explicitly asked people not to
list options only used in a work setting.  The background is the
uneasy feeling I get when using Signal, a feeling shared by others as
a blog post from Sander Venima about
&lt;a href=&quot;https://sandervenema.ch/2016/11/why-i-wont-recommend-signal-anymore/&quot;&gt;why
he do not recommend Signal anymore&lt;/a&gt; (with
&lt;a href=&quot;https://news.ycombinator.com/item?id=12883410&quot;&gt;feedback from
the Signal author available from ycombinator&lt;/a&gt;).  I wanted an
overview of the options being used, and hope to include those options
in a less biased survey later on.  So far I have not taken the time to
look into the individual proposed systems.  They range from text
sharing web pages, via file sharing and email to instant messaging,
VOIP and video conferencing.  For those considering which system to
use, it is also useful to have a look at
&lt;a href=&quot;https://www.eff.org/secure-messaging-scorecard&quot;&gt;the EFF Secure
messaging scorecard&lt;/a&gt; which is slightly out of date but still
provide valuable information.&lt;/p&gt;

&lt;p&gt;So, on to the list.  There were some used by many, some used by a
few, some rarely used ones and a few mentioned but without anyone
claiming to use them.  Notice the grouping is in reality quite random
given the biased self selected set of participants.  First the ones
used by many:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;https://whispersystems.org/&quot;&gt;Signal&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;Email w/&lt;a href=&quot;http://openpgp.org/&quot;&gt;OpenPGP&lt;/a&gt; (Enigmail, GPGSuite,etc)&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://www.whatsapp.com/&quot;&gt;Whatsapp&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;IRC w/&lt;a href=&quot;https://otr.cypherpunks.ca/&quot;&gt;OTR&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;XMPP w/&lt;a href=&quot;https://otr.cypherpunks.ca/&quot;&gt;OTR&lt;/a&gt;&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;Then the ones used by a few.&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;https://wiki.mumble.info/wiki/Main_Page&quot;&gt;Mumble&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;iMessage (included in iOS from Apple)&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://telegram.org/&quot;&gt;Telegram&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://jitsi.org/&quot;&gt;Jitsi&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://keybase.io/download&quot;&gt;Keybase file&lt;/a&gt;&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;Then the ones used by even fewer people&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;https://ring.cx/&quot;&gt;Ring&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://bitmessage.org/&quot;&gt;Bitmessage&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://wire.com/&quot;&gt;Wire&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;VoIP w/&lt;a href=&quot;https://en.wikipedia.org/wiki/ZRTP&quot;&gt;ZRTP&lt;/a&gt; or controlled &lt;a href=&quot;https://en.wikipedia.org/wiki/Secure_Real-time_Transport_Protocol&quot;&gt;SRTP&lt;/a&gt; (e.g using &lt;a href=&quot;https://en.wikipedia.org/wiki/CSipSimple&quot;&gt;CSipSimple&lt;/a&gt;, &lt;a href=&quot;https://en.wikipedia.org/wiki/Linphone&quot;&gt;Linphone&lt;/a&gt;)&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://matrix.org/&quot;&gt;Matrix&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://kontalk.org/&quot;&gt;Kontalk&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://0bin.net/&quot;&gt;0bin&lt;/a&gt; (encrypted pastebin)&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://appear.in&quot;&gt;Appear.in&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://riot.im/&quot;&gt;riot&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://www.wickr.com/&quot;&gt;Wickr Me&lt;/a&gt;&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;And finally the ones mentioned by not marked as used by
anyone. This might be a mistake, perhaps the person adding the entry
forgot to flag it as used?&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Email w/Certificates &lt;a href=&quot;https://en.wikipedia.org/wiki/S/MIME&quot;&gt;S/MIME&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://www.crypho.com/&quot;&gt;Crypho&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://cryptpad.fr/&quot;&gt;CryptPad&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;https://github.com/ricochet-im/ricochet&quot;&gt;ricochet&lt;/a&gt;&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;Given the network effect it seem obvious to me that we as a society
have been divided and conquered by those interested in keeping
encrypted and secure communication away from the masses.  The
finishing remarks &lt;a href=&quot;https://vimeo.com/97505679&quot;&gt;from Aral Balkan
in his talk &quot;Free is a lie&quot;&lt;/a&gt; about the usability of free software
really come into effect when you want to communicate in private with
your friends and family.  We can not expect them to allow the
usability of communication tool to block their ability to talk to
their loved ones.&lt;/p&gt;

&lt;p&gt;Note for example the option IRC w/OTR.  Most IRC clients do not
have OTR support, so in most cases OTR would not be an option, even if
you wanted to.  In my personal experience, about 1 in 20 I talk to
have a IRC client with OTR.  For private communication to really be
available, most people to talk to must have the option in their
currently used client.  I can not simply ask my family to install an
IRC client.  I need to guide them through a technical multi-step
process of adding extensions to the client to get them going.  This is
a non-starter for most.&lt;/p&gt;

&lt;p&gt;I would like to be able to do video phone calls, audio phone calls,
exchange instant messages and share files with my loved ones, without
being forced to share with people I do not know.  I do not want to
share the content of the conversations, and I do not want to share who
I communicate with or the fact that I communicate with someone.
Without all these factors in place, my private life is being more or
less invaded.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>My own self balancing Lego Segway</title>
                <link>http://people.skolelinux.org/pere/blog/My_own_self_balancing_Lego_Segway.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/My_own_self_balancing_Lego_Segway.html</guid>
                <pubDate>Fri, 4 Nov 2016 10:15:00 +0100</pubDate>
                <description>&lt;p&gt;A while back I received a Gyro sensor for the NXT
&lt;a href=&quot;mindstorms.lego.com&quot;&gt;Mindstorms&lt;/a&gt; controller as a birthday
present.  It had been on my wishlist for a while, because I wanted to
build a Segway like balancing lego robot.  I had already built
&lt;a href=&quot;http://www.nxtprograms.com/NXT2/segway/&quot;&gt;a simple balancing
robot&lt;/a&gt; with the kids, using the light/color sensor included in the
NXT kit as the balance sensor, but it was not working very well.  It
could balance for a while, but was very sensitive to the light
condition in the room and the reflective properties of the surface and
would fall over after a short while.  I wanted something more robust,
and had
&lt;a href=&quot;https://www.hitechnic.com/cgi-bin/commerce.cgi?preadd=action&amp;key=NGY1044&quot;&gt;the
gyro sensor from HiTechnic&lt;/a&gt; I believed would solve it on my
wishlist for some years before it suddenly showed up as a gift from my
loved ones. :)&lt;/p&gt;

&lt;p&gt;Unfortunately I have not had time to sit down and play with it
since then.  But that changed some days ago, when I was searching for
lego segway information and came across a recipe from HiTechnic for
building
&lt;a href=&quot;http://www.hitechnic.com/blog/gyro-sensor/htway/&quot;&gt;the
HTWay&lt;/a&gt;, a segway like balancing robot.  Build instructions and
&lt;a href=&quot;https://www.hitechnic.com/upload/786-HTWayC.nxc&quot;&gt;source
code&lt;/a&gt; was included, so it was just a question of putting it all
together.  And thanks to the great work of many Debian developers, the
compiler needed to build the source for the NXT is already included in
Debian, so I was read to go in less than an hour.  The resulting robot
do not look very impressive in its simplicity:&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;img width=&quot;70%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2016-11-04-lego-htway-robot.jpeg&quot;&gt;&lt;/p&gt;

&lt;p&gt;Because I lack the infrared sensor used to control the robot in the
design from HiTechnic, I had to comment out the last task
(taskControl).  I simply placed /* and */ around it get the program
working without that sensor present.  Now it balances just fine until
the battery status run low:&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;video width=&quot;70%&quot; controls=&quot;true&quot;&gt;
   &lt;source src=&quot;http://people.skolelinux.org/pere/blog/images/2016-11-04-lego-htway-balancing.ogv&quot; type=&quot;video/ogg&quot;&gt;
&lt;/video&gt;&lt;/p&gt;

&lt;p&gt;Now we would like to teach it how to follow a line and take remote
control instructions using the included Bluetooth receiver in the NXT.&lt;/p&gt;

&lt;p&gt;If you, like me, love LEGO and want to make sure we find the tools
they need to work with LEGO in Debian and all our derivative
distributions like Ubuntu, check out
&lt;a href=&quot;http://wiki.debian.org/LegoDesigners&quot;&gt;the LEGO designers
project page&lt;/a&gt; and join the Debian LEGO team.  Personally I own a
RCX and NXT controller (no EV3), and would like to make sure the
Debian tools needed to program the systems I own work as they
should.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Experience and updated recipe for using the Signal app without a mobile phone</title>
                <link>http://people.skolelinux.org/pere/blog/Experience_and_updated_recipe_for_using_the_Signal_app_without_a_mobile_phone.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Experience_and_updated_recipe_for_using_the_Signal_app_without_a_mobile_phone.html</guid>
                <pubDate>Mon, 10 Oct 2016 11:30:00 +0200</pubDate>
                <description>&lt;p&gt;In July
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/How_to_use_the_Signal_app_if_you_only_have_a_land_line__ie_no_mobile_phone_.html&quot;&gt;I
wrote how to get the Signal Chrome/Chromium app working&lt;/a&gt; without
the ability to receive SMS messages (aka without a cell phone).  It is
time to share some experiences and provide an updated setup.&lt;/p&gt;

&lt;p&gt;The Signal app have worked fine for several months now, and I use
it regularly to chat with my loved ones.  I had a major snag at the
end of my summer vacation, when the the app completely forgot my
setup, identity and keys.  The reason behind this major mess was
running out of disk space.  To avoid that ever happening again I have
started storing everything in &lt;tt&gt;userdata/&lt;/tt&gt; in git, to be able to
roll back to an earlier version if the files are wiped by mistake.  I
had to use it once after introducing the git backup.  When rolling
back to an earlier version, one need to use the &#39;reset session&#39; option
in Signal to get going, and notify the people you talk with about the
problem.  I assume there is some sequence number tracking in the
protocol to detect rollback attacks.  The git repository is rather big
(674 MiB so far), but I have not tried to figure out if some of the
content can be added to a .gitignore file due to lack of spare
time.&lt;/p&gt;

&lt;p&gt;I&#39;ve also hit the 90 days timeout blocking, and noticed that this
make it impossible to send messages using Signal.  I could still
receive them, but had to patch the code with a new timestamp to send.
I believe the timeout is added by the developers to force people to
upgrade to the latest version of the app, even when there is no
protocol changes, to reduce the version skew among the user base and
thus try to keep the number of support requests down.&lt;/p&gt;

&lt;p&gt;Since my original recipe, the Signal source code changed slightly,
making the old patch fail to apply cleanly.  Below is an updated
patch, including the shell wrapper I use to start Signal.  The
original version required a new user to locate the JavaScript console
and call a function from there.  I got help from a friend with more
JavaScript knowledge than me to modify the code to provide a GUI
button instead.  This mean that to get started you just need to run
the wrapper and click the &#39;Register without mobile phone&#39; to get going
now.  I&#39;ve also modified the timeout code to always set it to 90 days
in the future, to avoid having to patch the code regularly.&lt;/p&gt;

&lt;p&gt;So, the updated recipe for Debian Jessie:&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;First, install required packages to get the source code and the
browser you need.  Signal only work with Chrome/Chromium, as far as I
know, so you need to install it.

&lt;pre&gt;
apt install git tor chromium
git clone https://github.com/WhisperSystems/Signal-Desktop.git
&lt;/pre&gt;&lt;/li&gt;

&lt;li&gt;Modify the source code using command listed in the the patch
block below.&lt;/li&gt;

&lt;li&gt;Start Signal using the run-signal-app wrapper (for example using
&lt;tt&gt;`pwd`/run-signal-app&lt;/tt&gt;).

&lt;li&gt;Click on the &#39;Register without mobile phone&#39;, will in a phone
number you can receive calls to the next minute, receive the
verification code and enter it into the form field and press
&#39;Register&#39;.  Note, the phone number you use will be user Signal
username, ie the way others can find you on Signal.&lt;/li&gt;

&lt;li&gt;You can now use Signal to contact others.  Note, new contacts do
not show up in the contact list until you restart Signal, and there is
no way to assign names to Contacts.  There is also no way to create or
update chat groups.  I suspect this is because the web app do not have
a associated contact database.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;I am still a bit uneasy about using Signal, because of the way its
main author moxie0 reject federation and accept dependencies to major
corporations like Google (part of the code is fetched from Google) and
Amazon (the central coordination point is owned by Amazon).  See for
example
&lt;a href=&quot;https://github.com/LibreSignal/LibreSignal/issues/37&quot;&gt;the
LibreSignal issue tracker&lt;/a&gt; for a thread documenting the authors
view on these issues.  But the network effect is strong in this case,
and several of the people I want to communicate with already use
Signal.  Perhaps we can all move to &lt;a href=&quot;https://ring.cx/&quot;&gt;Ring&lt;/a&gt;
once it &lt;a href=&quot;https://bugs.debian.org/830265&quot;&gt;work on my
laptop&lt;/a&gt;?  It already work on Windows and Android, and is included
in &lt;a href=&quot;https://tracker.debian.org/pkg/ring&quot;&gt;Debian&lt;/a&gt; and
&lt;a href=&quot;https://launchpad.net/ubuntu/+source/ring&quot;&gt;Ubuntu&lt;/a&gt;, but not
working on Debian Stable.&lt;/p&gt;

&lt;p&gt;Anyway, this is the patch I apply to the Signal code to get it
working.  It switch to the production servers, disable to timeout,
make registration easier and add the shell wrapper:&lt;/p&gt;

&lt;pre&gt;
cd Signal-Desktop; cat &amp;lt;&amp;lt;EOF | patch -p1
diff --git a/js/background.js b/js/background.js
index 24b4c1d..579345f 100644
--- a/js/background.js
+++ b/js/background.js
@@ -33,9 +33,9 @@
         });
     });
 
-    var SERVER_URL = &#39;https://textsecure-service-staging.whispersystems.org&#39;;
+    var SERVER_URL = &#39;https://textsecure-service-ca.whispersystems.org&#39;;
     var SERVER_PORTS = [80, 4433, 8443];
-    var ATTACHMENT_SERVER_URL = &#39;https://whispersystems-textsecure-attachments-staging.s3.amazonaws.com&#39;;
+    var ATTACHMENT_SERVER_URL = &#39;https://whispersystems-textsecure-attachments.s3.amazonaws.com&#39;;
     var messageReceiver;
     window.getSocketStatus = function() {
         if (messageReceiver) {
diff --git a/js/expire.js b/js/expire.js
index 639aeae..beb91c3 100644
--- a/js/expire.js
+++ b/js/expire.js
@@ -1,6 +1,6 @@
 ;(function() {
     &#39;use strict&#39;;
-    var BUILD_EXPIRATION = 0;
+    var BUILD_EXPIRATION = Date.now() + (90 * 24 * 60 * 60 * 1000);
 
     window.extension = window.extension || {};
 
diff --git a/js/views/install_view.js b/js/views/install_view.js
index 7816f4f..1d6233b 100644
--- a/js/views/install_view.js
+++ b/js/views/install_view.js
@@ -38,7 +38,8 @@
             return {
                 &#39;click .step1&#39;: this.selectStep.bind(this, 1),
                 &#39;click .step2&#39;: this.selectStep.bind(this, 2),
-                &#39;click .step3&#39;: this.selectStep.bind(this, 3)
+                &#39;click .step3&#39;: this.selectStep.bind(this, 3),
+                &#39;click .callreg&#39;: function() { extension.install(&#39;standalone&#39;) },
             };
         },
         clearQR: function() {
diff --git a/options.html b/options.html
index dc0f28e..8d709f6 100644
--- a/options.html
+++ b/options.html
@@ -14,7 +14,10 @@
         &amp;lt;div class=&#39;nav&#39;&gt;
           &amp;lt;h1&gt;{{ installWelcome }}&amp;lt;/h1&gt;
           &amp;lt;p&gt;{{ installTagline }}&amp;lt;/p&gt;
-          &amp;lt;div&gt; &amp;lt;a class=&#39;button step2&#39;&gt;{{ installGetStartedButton }}&amp;lt;/a&gt; &amp;lt;/div&gt;
+          &amp;lt;div&gt; &amp;lt;a class=&#39;button step2&#39;&gt;{{ installGetStartedButton }}&amp;lt;/a&gt;
+           &amp;lt;br&gt; &amp;lt;a class=&quot;button callreg&quot;&gt;Register without mobile phone&amp;lt;/a&gt;
+
+         &amp;lt;/div&gt;
           &amp;lt;span class=&#39;dot step1 selected&#39;&gt;&amp;lt;/span&gt;
           &amp;lt;span class=&#39;dot step2&#39;&gt;&amp;lt;/span&gt;
           &amp;lt;span class=&#39;dot step3&#39;&gt;&amp;lt;/span&gt;
--- /dev/null   2016-10-07 09:55:13.730181472 +0200
+++ b/run-signal-app   2016-10-10 08:54:09.434172391 +0200
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+cd $(dirname $0)
+mkdir -p userdata
+userdata=&quot;`pwd`/userdata&quot;
+if [ -d &quot;$userdata&quot; ] &amp;&amp; [ ! -d &quot;$userdata/.git&quot; ] ; then
+    (cd $userdata &amp;&amp; git init)
+fi
+(cd $userdata &amp;&amp; git add . &amp;&amp; git commit -m &quot;Current status.&quot; || true)
+exec chromium \
+  --proxy-server=&quot;socks://localhost:9050&quot; \
+  --user-data-dir=$userdata --load-and-launch-app=`pwd`
EOF
chmod a+rx run-signal-app
&lt;/pre&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Isenkram, Appstream and udev make life as a LEGO builder easier</title>
                <link>http://people.skolelinux.org/pere/blog/Isenkram__Appstream_and_udev_make_life_as_a_LEGO_builder_easier.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Isenkram__Appstream_and_udev_make_life_as_a_LEGO_builder_easier.html</guid>
                <pubDate>Fri, 7 Oct 2016 09:50:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://packages.qa.debian.org/isenkram&quot;&gt;The Isenkram
system&lt;/a&gt; provide a practical and easy way to figure out which
packages support the hardware in a given machine.  The command line
tool &lt;tt&gt;isenkram-lookup&lt;/tt&gt; and the tasksel options provide a
convenient way to list and install packages relevant for the current
hardware during system installation, both user space packages and
firmware packages. The GUI background daemon on the other hand provide
a pop-up proposing to install packages when a new dongle is inserted
while using the computer.  For example, if you plug in a smart card
reader, the system will ask if you want to install &lt;tt&gt;pcscd&lt;/tt&gt; if
that package isn&#39;t already installed, and if you plug in a USB video
camera the system will ask if you want to install &lt;tt&gt;cheese&lt;/tt&gt; if
cheese is currently missing.  This already work just fine.&lt;/p&gt;

&lt;p&gt;But Isenkram depend on a database mapping from hardware IDs to
package names.  When I started no such database existed in Debian, so
I made my own data set and included it with the isenkram package and
made isenkram fetch the latest version of this database from git using
http.  This way the isenkram users would get updated package proposals
as soon as I learned more about hardware related packages.&lt;/p&gt;

&lt;p&gt;The hardware is identified using modalias strings.  The modalias
design is from the Linux kernel where most hardware descriptors are
made available as a strings that can be matched using filename style
globbing.  It handle USB, PCI, DMI and a lot of other hardware related
identifiers.&lt;/p&gt;

&lt;p&gt;The downside to the Isenkram specific database is that there is no
information about relevant distribution / Debian version, making
isenkram propose obsolete packages too.  But along came AppStream, a
cross distribution mechanism to store and collect metadata about
software packages.  When I heard about the proposal, I contacted the
people involved and suggested to add a hardware matching rule using
modalias strings in the specification, to be able to use AppStream for
mapping hardware to packages.  This idea was accepted and AppStream is
now a great way for a package to announce the hardware it support in a
distribution neutral way.  I wrote
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Using_appstream_with_isenkram_to_install_hardware_related_packages_in_Debian.html&quot;&gt;a
recipe on how to add such meta-information&lt;/a&gt; in a blog post last
December.  If you have a hardware related package in Debian, please
announce the relevant hardware IDs using AppStream.&lt;/p&gt;

&lt;p&gt;In Debian, almost all packages that can talk to a LEGO Mindestorms
RCX or NXT unit, announce this support using AppStream.  The effect is
that when you insert such LEGO robot controller into your Debian
machine, Isenkram will propose to install the packages needed to get
it working.  The intention is that this should allow the local user to
start programming his robot controller right away without having to
guess what packages to use or which permissions to fix.&lt;/p&gt;

&lt;p&gt;But when I sat down with my son the other day to program our NXT
unit using his Debian Stretch computer, I discovered something
annoying.  The local console user (ie my son) did not get access to
the USB device for programming the unit.  This used to work, but no
longer in Jessie and Stretch.  After some investigation and asking
around on #debian-devel, I discovered that this was because udev had
changed the mechanism used to grant access to local devices.  The
ConsoleKit mechanism from &lt;tt&gt;/lib/udev/rules.d/70-udev-acl.rules&lt;/tt&gt;
no longer applied, because LDAP users no longer was added to the
plugdev group during login.  Michael Biebl told me that this method
was obsolete and the new method used ACLs instead.  This was good
news, as the plugdev mechanism is a mess when using a remote user
directory like LDAP.  Using ACLs would make sure a user lost device
access when she logged out, even if the user left behind a background
process which would retain the plugdev membership with the ConsoleKit
setup.  Armed with this knowledge I moved on to fix the access problem
for the LEGO Mindstorms related packages.&lt;/p&gt;

&lt;p&gt;The new system uses a udev tag, &#39;uaccess&#39;.  It can either be
applied directly for a device, or is applied in
/lib/udev/rules.d/70-uaccess.rules for classes of devices.  As the
LEGO Mindstorms udev rules did not have a class, I decided to add the
tag directly in the udev rules files included in the packages.  Here
is one example.  For the nqc C compiler for the RCX, the
&lt;tt&gt;/lib/udev/rules.d/60-nqc.rules&lt;/tt&gt; file now look like this:

&lt;p&gt;&lt;pre&gt;
SUBSYSTEM==&quot;usb&quot;, ACTION==&quot;add&quot;, ATTR{idVendor}==&quot;0694&quot;, ATTR{idProduct}==&quot;0001&quot;, \
    SYMLINK+=&quot;rcx-%k&quot;, TAG+=&quot;uaccess&quot;
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The key part is the &#39;TAG+=&quot;uaccess&quot;&#39; at the end.  I suspect all
packages using plugdev in their /lib/udev/rules.d/ files should be
changed to use this tag (either directly or indirectly via
&lt;tt&gt;70-uaccess.rules&lt;/tt&gt;).  Perhaps a lintian check should be created
to detect this?&lt;/p&gt;

&lt;p&gt;I&#39;ve been unable to find good documentation on the uaccess feature.
It is unclear to me if the uaccess tag is an internal implementation
detail like the udev-acl tag used by
&lt;tt&gt;/lib/udev/rules.d/70-udev-acl.rules&lt;/tt&gt;.  If it is, I guess the
indirect method is the preferred way.  Michael
&lt;a href=&quot;https://github.com/systemd/systemd/issues/4288&quot;&gt;asked for more
documentation from the systemd project&lt;/a&gt; and I hope it will make
this clearer.  For now I use the generic classes when they exist and
is already handled by &lt;tt&gt;70-uaccess.rules&lt;/tt&gt;, and add the tag
directly if no such class exist.&lt;/p&gt;

&lt;p&gt;To learn more about the isenkram system, please check out
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/tags/isenkram/&quot;&gt;my
blog posts tagged isenkram&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;To help out making life for LEGO constructors in Debian easier,
please join us on our IRC channel
&lt;a href=&quot;irc://irc.debian.org/%23debian-lego&quot;&gt;#debian-lego&lt;/a&gt; and join
the &lt;a href=&quot;https://alioth.debian.org/projects/debian-lego/&quot;&gt;Debian
LEGO team&lt;/a&gt; in the Alioth project we created yesterday.  A mailing
list is not yet created, but we are working on it. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First draft Norwegian Bokmål edition of The Debian Administrator&#39;s Handbook now public</title>
                <link>http://people.skolelinux.org/pere/blog/First_draft_Norwegian_Bokm_l_edition_of_The_Debian_Administrator_s_Handbook_now_public.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_draft_Norwegian_Bokm_l_edition_of_The_Debian_Administrator_s_Handbook_now_public.html</guid>
                <pubDate>Tue, 30 Aug 2016 10:10:00 +0200</pubDate>
                <description>&lt;p&gt;In April we
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Lets_make_a_Norwegian_Bokm_l_edition_of_The_Debian_Administrator_s_Handbook.html&quot;&gt;started
to work&lt;/a&gt; on a Norwegian Bokmål edition of the &quot;open access&quot; book on
how to set up and administrate a Debian system.  Today I am happy to
report that the first draft is now publicly available.  You can find
it on &lt;a href=&quot;https://debian-handbook.info/get/&quot;&gt;get the Debian
Administrator&#39;s Handbook page&lt;/a&gt; (under Other languages).  The first
eight chapters have a first draft translation, and we are working on
proofreading the content.  If you want to help out, please start
contributing using
&lt;a href=&quot;https://hosted.weblate.org/projects/debian-handbook/&quot;&gt;the
hosted weblate project page&lt;/a&gt;, and get in touch using
&lt;a href=&quot;http://lists.alioth.debian.org/mailman/listinfo/debian-handbook-translators&quot;&gt;the
translators mailing list&lt;/a&gt;.  Please also check out
&lt;a href=&quot;https://debian-handbook.info/contribute/&quot;&gt;the instructions for
contributors&lt;/a&gt;.  A good way to contribute is to proofread the text
and update weblate if you find errors.&lt;/p&gt;

&lt;p&gt;Our goal is still to make the Norwegian book available on paper as well as
electronic form.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Coz can help you find bottlenecks in multi-threaded software - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/Coz_can_help_you_find_bottlenecks_in_multi_threaded_software___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Coz_can_help_you_find_bottlenecks_in_multi_threaded_software___nice_free_software.html</guid>
                <pubDate>Thu, 11 Aug 2016 12:00:00 +0200</pubDate>
                <description>&lt;p&gt;This summer, I read a great article
&quot;&lt;a href=&quot;https://www.usenix.org/publications/login/summer2016/curtsinger&quot;&gt;coz:
This Is the Profiler You&#39;re Looking For&lt;/a&gt;&quot; in USENIX ;login: about
how to profile multi-threaded programs.  It presented a system for
profiling software by running experiences in the running program,
testing how run time performance is affected by &quot;speeding up&quot; parts of
the code to various degrees compared to a normal run.  It does this by
slowing down parallel threads while the &quot;faster up&quot; code is running
and measure how this affect processing time.  The processing time is
measured using probes inserted into the code, either using progress
counters (COZ_PROGRESS) or as latency meters (COZ_BEGIN/COZ_END).  It
can also measure unmodified code by measuring complete the program
runtime and running the program several times instead.&lt;/p&gt;

&lt;p&gt;The project and presentation was so inspiring that I would like to
get the system into Debian.  I
&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=830708&quot;&gt;created
a WNPP request for it&lt;/a&gt; and contacted upstream to try to make the
system ready for Debian by sending patches.  The build process need to
be changed a bit to avoid running &#39;git clone&#39; to get dependencies, and
to include the JavaScript web page used to visualize the collected
profiling information included in the source package.
But I expect that should work out fairly soon.&lt;/p&gt;

&lt;p&gt;The way the system work is fairly simple.  To run an coz experiment
on a binary with debug symbols available, start the program like this:

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
coz run --- program-to-run
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;This will create a text file profile.coz with the instrumentation
information.  To show what part of the code affect the performance
most, use a web browser and either point it to
&lt;a href=&quot;http://plasma-umass.github.io/coz/&quot;&gt;http://plasma-umass.github.io/coz/&lt;/a&gt;
or use the copy from git (in the gh-pages branch).  Check out this web
site to have a look at several example profiling runs and get an idea what the end result from the profile runs look like.  To make the
profiling more useful you include &amp;lt;coz.h&amp;gt; and insert the
COZ_PROGRESS or COZ_BEGIN and COZ_END at appropriate places in the
code, rebuild and run the profiler.  This allow coz to do more
targeted experiments.&lt;/p&gt;

&lt;p&gt;A video published by ACM
&lt;a href=&quot;https://www.youtube.com/watch?v=jE0V-p1odPg&quot;&gt;presenting the
Coz profiler&lt;/a&gt; is available from Youtube.  There is also a paper
from the 25th Symposium on Operating Systems Principles available
titled
&lt;a href=&quot;https://www.usenix.org/conference/atc16/technical-sessions/presentation/curtsinger&quot;&gt;Coz:
finding code that counts with causal profiling&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/plasma-umass/coz&quot;&gt;The source code&lt;/a&gt;
for Coz is available from github.  It will only build with clang
because it uses a
&lt;a href=&quot;https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55606&quot;&gt;C++
feature missing in GCC&lt;/a&gt;, but I&#39;ve submitted
&lt;a href=&quot;https://github.com/plasma-umass/coz/pull/67&quot;&gt;a patch to solve
it&lt;/a&gt; and hope it will be included in the upstream source soon.&lt;/p&gt;

&lt;p&gt;Please get in touch if you, like me, would like to see this piece
of software in Debian.  I would very much like some help with the
packaging effort, as I lack the in depth knowledge on how to package
C++ libraries.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Sales number for the Free Culture translation, first half of 2016</title>
                <link>http://people.skolelinux.org/pere/blog/Sales_number_for_the_Free_Culture_translation__first_half_of_2016.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Sales_number_for_the_Free_Culture_translation__first_half_of_2016.html</guid>
                <pubDate>Fri, 5 Aug 2016 22:45:00 +0200</pubDate>
                <description>&lt;p&gt;As my regular readers probably remember, the last year I published
a French and Norwegian translation of the classic
&lt;a href=&quot;http://www.free-culture.cc/&quot;&gt;Free Culture book&lt;/a&gt; by the
founder of the Creative Commons movement, Lawrence Lessig.  A bit less
known is the fact that due to the way I created the translations,
using docbook and po4a, I also recreated the English original.  And
because I already had created a new the PDF edition, I published it
too.  The revenue from the books are sent to the Creative Commons
Corporation.  In other words, I do not earn any money from this
project, I just earn the warm fuzzy feeling that the text is available
for a wider audience and more people can learn why the Creative
Commons is needed.&lt;/p&gt;

&lt;p&gt;Today, just for fun, I had a look at the sales number over at
Lulu.com, which take care of payment, printing and shipping.  Much to
my surprise, the English edition is selling better than both the
French and Norwegian edition, despite the fact that it has been
available in English since it was first published.  In total, 24 paper
books was sold for USD $19.99 between 2016-01-01 and 2016-07-31:&lt;/p&gt;

&lt;table border=&quot;0&quot;&gt;
&lt;tr&gt;&lt;th&gt;Title / language&lt;/th&gt;&lt;th&gt;Quantity&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html&quot;&gt;Culture Libre / French&lt;/a&gt;&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;3&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html&quot;&gt;Fri kultur / Norwegian&lt;/a&gt;&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;7&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22440520.html&quot;&gt;Free Culture / English&lt;/a&gt;&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;14&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

&lt;p&gt;The books are available both from Lulu.com and from large book
stores like Amazon and Barnes&amp;Noble.  Most revenue, around $10 per
book, is sent to the Creative Commons project when the book is sold
directly by Lulu.com.  The other channels give less revenue.  The
summary from Lulu tell me 10 books was sold via the Amazon channel, 10
via Ingram (what is this?) and 4 directly by Lulu.  And Lulu.com tells
me that the revenue sent so far this year is USD $101.42.  No idea
what kind of sales numbers to expect, so I do not know if that is a
good amount of sales for a 10 year old book or not.  But it make me
happy that the buyers find the book, and I hope they enjoy reading it
as much as I did.&lt;/p&gt;

&lt;p&gt;The ebook edition is available for free from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;Github&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;If you would like to translate and publish the book in your native
language, I would be happy to help make it happen.  Please get in
touch.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Techno TV broadcasting live across Norway and the Internet (#debconf16, #nuug) on @frikanalen</title>
                <link>http://people.skolelinux.org/pere/blog/Techno_TV_broadcasting_live_across_Norway_and_the_Internet___debconf16___nuug__on__frikanalen.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Techno_TV_broadcasting_live_across_Norway_and_the_Internet___debconf16___nuug__on__frikanalen.html</guid>
                <pubDate>Mon, 1 Aug 2016 10:30:00 +0200</pubDate>
                <description>&lt;p&gt;Did you know there is a TV channel broadcasting talks from DebConf
16 across an entire country?  Or that there is a TV channel
broadcasting talks by or about
&lt;a href=&quot;http://beta.frikanalen.no/video/625529/&quot;&gt;Linus Torvalds&lt;/a&gt;,
&lt;a href=&quot;http://beta.frikanalen.no/video/625599/&quot;&gt;Tor&lt;/a&gt;,
&lt;a href=&quot;http://beta.frikanalen.no/video/624019/&quot;&gt;OpenID&lt;/A&gt;,
&lt;a href=&quot;http://beta.frikanalen.no/video/625624/&quot;&gt;Common Lisp&lt;/a&gt;,
&lt;a href=&quot;http://beta.frikanalen.no/video/625446/&quot;&gt;Civic Tech&lt;/a&gt;,
&lt;a href=&quot;http://beta.frikanalen.no/video/625090/&quot;&gt;EFF founder John Barlow&lt;/a&gt;,
&lt;a href=&quot;http://beta.frikanalen.no/video/625432/&quot;&gt;how to make 3D
printer electronics&lt;/a&gt; and many more fascinating topics?  It works
using only free software (all of it
&lt;a href=&quot;http://github.com/Frikanalen&quot;&gt;available from Github&lt;/a&gt;), and
is administrated using a web browser and a web API.&lt;/p&gt;

&lt;p&gt;The TV channel is the Norwegian open channel
&lt;a href=&quot;http://www.frikanalen.no/&quot;&gt;Frikanalen&lt;/a&gt;, and I am involved
via &lt;a href=&quot;https://www.nuug.no/&quot;&gt;the NUUG member association&lt;/a&gt; in
running and developing the software for the channel.  The channel is
organised as a member organisation where its members can upload and
broadcast what they want (think of it as Youtube for national
broadcasting television).  Individuals can broadcast too.  The time
slots are handled on a first come, first serve basis.  Because the
channel have almost no viewers and very few active members, we can
experiment with TV technology without too much flack when we make
mistakes.  And thanks to the few active members, most of the slots on
the schedule are free.  I see this as an opportunity to spread
knowledge about technology and free software, and have a script I run
regularly to fill up all the open slots the next few days with
technology related video.  The end result is a channel I like to
describe as Techno TV - filled with interesting talks and
presentations.&lt;/p&gt;

&lt;p&gt;It is available on channel 50 on the Norwegian national digital TV
network (RiksTV).  It is also available as a multicast stream on
Uninett.  And finally, it is available as
&lt;a href=&quot;http://beta.frikanalen.no/&quot;&gt;a WebM unicast stream&lt;/a&gt; from
Frikanalen and NUUG.  Check it out. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Unlocking HTC Desire HD on Linux using unruu and fastboot</title>
                <link>http://people.skolelinux.org/pere/blog/Unlocking_HTC_Desire_HD_on_Linux_using_unruu_and_fastboot.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Unlocking_HTC_Desire_HD_on_Linux_using_unruu_and_fastboot.html</guid>
                <pubDate>Thu, 7 Jul 2016 11:30:00 +0200</pubDate>
                <description>&lt;p&gt;Yesterday, I tried to unlock a HTC Desire HD phone, and it proved
to be a slight challenge.  Here is the recipe if I ever need to do it
again.  It all started by me wanting to try the recipe to set up
&lt;a href=&quot;https://blog.torproject.org/blog/mission-impossible-hardening-android-security-and-privacy&quot;&gt;an
hardened Android installation&lt;/a&gt; from the Tor project blog on a
device I had access to.  It is a old mobile phone with a broken
microphone The initial idea had been to just
&lt;a href=&quot;http://wiki.cyanogenmod.org/w/Install_CM_for_ace&quot;&gt;install
CyanogenMod on it&lt;/a&gt;, but did not quite find time to start on it
until a few days ago.&lt;/p&gt;

&lt;p&gt;The unlock process is supposed to be simple: (1) Boot into the boot
loader (press volume down and power at the same time), (2) select
&#39;fastboot&#39; before (3) connecting the device via USB to a Linux
machine, (4) request the device identifier token by running &#39;fastboot
oem get_identifier_token&#39;, (5) request the device unlocking key using
the &lt;a href=&quot;http://www.htcdev.com/bootloader/&quot;&gt;HTC developer web
site&lt;/a&gt; and unlock the phone using the key file emailed to you.&lt;/p&gt;

&lt;p&gt;Unfortunately, this only work fi you have hboot version 2.00.0029
or newer, and the device I was working on had 2.00.0027.  This
apparently can be easily fixed by downloading a Windows program and
running it on your Windows machine, if you accept the terms Microsoft
require you to accept to use Windows - which I do not.  So I had to
come up with a different approach.  I got a lot of help from AndyCap
on #nuug, and would not have been able to get this working without
him.&lt;/p&gt;

&lt;p&gt;First I needed to extract the hboot firmware from
&lt;a href=&quot;http://www.htcdev.com/ruu/PD9810000_Ace_Sense30_S_hboot_2.00.0029.exe&quot;&gt;the
windows binary for HTC Desire HD&lt;/a&gt; downloaded as &#39;the RUU&#39; from HTC.
For this there is is &lt;a href=&quot;https://github.com/kmdm/unruu/&quot;&gt;a github
project named unruu&lt;/a&gt; using libunshield.  The unshield tool did not
recognise the file format, but unruu worked and extracted rom.zip,
containing the new hboot firmware and a text file describing which
devices it would work for.&lt;/p&gt;

&lt;p&gt;Next, I needed to get the new firmware into the device.  For this I
followed some instructions
&lt;a href=&quot;http://www.htc1guru.com/2013/09/new-ruu-zips-posted/&quot;&gt;available
from HTC1Guru.com&lt;/a&gt;, and ran these commands as root on a Linux
machine with Debian testing:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
adb reboot-bootloader
fastboot oem rebootRUU
fastboot flash zip rom.zip
fastboot flash zip rom.zip
fastboot reboot
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The flash command apparently need to be done twice to take effect,
as the first is just preparations and the second one do the flashing.
The adb command is just to get to the boot loader menu, so turning the
device on while holding volume down and the power button should work
too.&lt;/p&gt;

&lt;p&gt;With the new hboot version in place I could start following the
instructions on the HTC developer web site.  I got the device token
like this:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
fastboot oem get_identifier_token 2&gt;&amp;1 | sed &#39;s/(bootloader) //&#39;
&lt;/pre&gt;

&lt;p&gt;And once I got the unlock code via email, I could use it like
this:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
fastboot flash unlocktoken Unlock_code.bin
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;And with that final step in place, the phone was unlocked and I
could start stuffing the software of my own choosing into the device.
So far I only inserted a replacement recovery image to wipe the phone
before I start.  We will see what happen next.  Perhaps I should
install &lt;a href=&quot;https://www.debian.org/&quot;&gt;Debian&lt;/a&gt; on it. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to use the Signal app if you only have a land line (ie no mobile phone)</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_use_the_Signal_app_if_you_only_have_a_land_line__ie_no_mobile_phone_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_use_the_Signal_app_if_you_only_have_a_land_line__ie_no_mobile_phone_.html</guid>
                <pubDate>Sun, 3 Jul 2016 14:20:00 +0200</pubDate>
                <description>&lt;p&gt;For a while now, I have wanted to test
&lt;a href=&quot;https://whispersystems.org/&quot;&gt;the Signal app&lt;/a&gt;, as it is
said to provide end to end encrypted communication and several of my
friends and family are already using it.  As I by choice do not own a
mobile phone, this proved to be harder than expected.  And I wanted to
have the source of the client and know that it was the code used on my
machine.  But yesterday I managed to get it working.  I used the
Github source, compared it to the source in
&lt;a href=&quot;https://chrome.google.com/webstore/detail/signal-private-messenger/bikioccmkafdpakkkcpdbppfkghcmihk?hl=en-US&quot;&gt;the
Signal Chrome app&lt;/a&gt; available from the Chrome web store, applied
patches to use the production Signal servers, started the app and
asked for the hidden &quot;register without a smart phone&quot; form.  Here is
the recipe how I did it.&lt;/p&gt;

&lt;p&gt;First, I fetched the Signal desktop source from Github, using

&lt;pre&gt;
git clone https://github.com/WhisperSystems/Signal-Desktop.git
&lt;/pre&gt;

&lt;p&gt;Next, I patched the source to use the production servers, to be
able to talk to other Signal users:&lt;/p&gt;

&lt;pre&gt;
cat &amp;lt;&amp;lt;EOF | patch -p0
diff -ur ./js/background.js userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/background.js
--- ./js/background.js  2016-06-29 13:43:15.630344628 +0200
+++ userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/background.js    2016-06-29 14:06:29.530300934 +0200
@@ -47,8 +47,8 @@
         });
     });
 
-    var SERVER_URL = &#39;https://textsecure-service-staging.whispersystems.org&#39;;
-    var ATTACHMENT_SERVER_URL = &#39;https://whispersystems-textsecure-attachments-staging.s3.amazonaws.com&#39;;
+    var SERVER_URL = &#39;https://textsecure-service-ca.whispersystems.org:4433&#39;;
+    var ATTACHMENT_SERVER_URL = &#39;https://whispersystems-textsecure-attachments.s3.amazonaws.com&#39;;
     var messageReceiver;
     window.getSocketStatus = function() {
         if (messageReceiver) {
diff -ur ./js/expire.js userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/expire.js
--- ./js/expire.js      2016-06-29 13:43:15.630344628 +0200
+++ userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/expire.js2016-06-29 14:06:29.530300934 +0200
@@ -1,6 +1,6 @@
 ;(function() {
     &#39;use strict&#39;;
-    var BUILD_EXPIRATION = 0;
+    var BUILD_EXPIRATION = 1474492690000;
 
     window.extension = window.extension || {};
 
EOF
&lt;/pre&gt;

&lt;p&gt;The first part is changing the servers, and the second is updating
an expiration timestamp.  This timestamp need to be updated regularly.
It is set 90 days in the future by the build process (Gruntfile.js).
The value is seconds since 1970 times 1000, as far as I can tell.&lt;/p&gt;

&lt;p&gt;Based on a tip and good help from the #nuug IRC channel, I wrote a
script to launch Signal in Chromium.&lt;/p&gt;

&lt;pre&gt;
#!/bin/sh
cd $(dirname $0)
mkdir -p userdata
exec chromium \
  --proxy-server=&quot;socks://localhost:9050&quot; \
  --user-data-dir=`pwd`/userdata --load-and-launch-app=`pwd`
&lt;/pre&gt;

&lt;p&gt; The script start the app and configure Chromium to use the Tor
SOCKS5 proxy to make sure those controlling the Signal servers (today
Amazon and Whisper Systems) as well as those listening on the lines
will have a harder time location my laptop based on the Signal
connections if they use source IP address.&lt;/p&gt;

&lt;p&gt;When the script starts, one need to follow the instructions under
&quot;Standalone Registration&quot; in the CONTRIBUTING.md file in the git
repository.  I right clicked on the Signal window to get up the
Chromium debugging tool, visited the &#39;Console&#39; tab and wrote
&#39;extension.install(&quot;standalone&quot;)&#39; on the console prompt to get the
registration form.  Then I entered by land line phone number and
pressed &#39;Call&#39;.  5 seconds later the phone rang and a robot voice
repeated the verification code three times.  After entering the number
into the verification code field in the form, I could start using
Signal from my laptop.

&lt;p&gt;As far as I can tell, The Signal app will leak who is talking to
whom and thus who know who to those controlling the central server,
but such leakage is hard to avoid with a centrally controlled server
setup.  It is something to keep in mind when using Signal - the
content of your chats are harder to intercept, but the meta data
exposing your contact network is available to people you do not know.
So better than many options, but not great.  And sadly the usage is
connected to my land line, thus allowing those controlling the server
to associate it to my home and person.  I would prefer it if only
those I knew could tell who I was on Signal.  There are options
avoiding such information leakage, but most of my friends are not
using them, so I am stuck with Signal for now.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2017-01-10&lt;/strong&gt;: There is an updated blog post
on this topic in
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Experience_and_updated_recipe_for_using_the_Signal_app_without_a_mobile_phone.html&quot;&gt;Experience
and updated recipe for using the Signal app without a mobile
phone&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The new &quot;best&quot; multimedia player in Debian?</title>
                <link>http://people.skolelinux.org/pere/blog/The_new__best__multimedia_player_in_Debian_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_new__best__multimedia_player_in_Debian_.html</guid>
                <pubDate>Mon, 6 Jun 2016 12:50:00 +0200</pubDate>
                <description>&lt;p&gt;When I set out a few weeks ago to figure out
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/What_is_the_best_multimedia_player_in_Debian_.html&quot;&gt;which
multimedia player in Debian claimed to support most file formats /
MIME types&lt;/a&gt;, I was a bit surprised how varied the sets of MIME types
the various players claimed support for.  The range was from 55 to 130
MIME types.  I suspect most media formats are supported by all
players, but this is not really reflected in the MimeTypes values in
their desktop files.  There are probably also some bogus MIME types
listed, but it is hard to identify which one this is.&lt;/p&gt;

&lt;p&gt;Anyway, in the mean time I got in touch with upstream for some of
the players suggesting to add more MIME types to their desktop files,
and decided to spend some time myself improving the situation for my
favorite media player VLC.  The fixes for VLC entered Debian unstable
yesterday. The complete list of MIME types can be seen on the
&lt;a href=&quot;https://wiki.debian.org/DebianMultimedia/PlayerSupport&quot;&gt;Multimedia
player MIME type support status&lt;/a&gt; Debian wiki page.&lt;/p&gt;

&lt;p&gt;The new &quot;best&quot; multimedia player in Debian?  It is VLC, followed by
totem, parole, kplayer, gnome-mpv, mpv, smplayer, mplayer-gui and
kmplayer.  I am sure some of the other players desktop files support
several of the formats currently listed as working only with vlc,
toten and parole.&lt;/p&gt;

&lt;p&gt;A sad observation is that only 14 MIME types are listed as
supported by all the tested multimedia players in Debian in their
desktop files: audio/mpeg, audio/vnd.rn-realaudio, audio/x-mpegurl,
audio/x-ms-wma, audio/x-scpls, audio/x-wav, video/mp4, video/mpeg,
video/quicktime, video/vnd.rn-realvideo, video/x-matroska,
video/x-ms-asf, video/x-ms-wmv and video/x-msvideo.  Personally I find
it sad that video/ogg and video/webm is not supported by all the media
players in Debian.  As far as I can tell, all of them can handle both
formats.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A program should be able to open its own files on Linux</title>
                <link>http://people.skolelinux.org/pere/blog/A_program_should_be_able_to_open_its_own_files_on_Linux.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_program_should_be_able_to_open_its_own_files_on_Linux.html</guid>
                <pubDate>Sun, 5 Jun 2016 08:30:00 +0200</pubDate>
                <description>&lt;p&gt;Many years ago, when koffice was fresh and with few users, I
decided to test its presentation tool when making the slides for a
talk I was giving for NUUG on Japhar, a free Java virtual machine.  I
wrote the first draft of the slides, saved the result and went to bed
the day before I would give the talk.  The next day I took a plane to
the location where the meeting should take place, and on the plane I
started up koffice again to polish the talk a bit, only to discover
that kpresenter refused to load its own data file.  I cursed a bit and
started making the slides again from memory, to have something to
present when I arrived.  I tested that the saved files could be
loaded, and the day seemed to be rescued.  I continued to polish the
slides until I suddenly discovered that the saved file could no longer
be loaded into kpresenter.  In the end I had to rewrite the slides
three times, condensing the content until the talk became shorter and
shorter.  After the talk I was able to pinpoint the problem &amp;ndash;
kpresenter wrote inline images in a way itself could not understand.
Eventually that bug was fixed and kpresenter ended up being a great
program to make slides.  The point I&#39;m trying to make is that we
expect a program to be able to load its own data files, and it is
embarrassing to its developers if it can&#39;t.&lt;/p&gt;

&lt;p&gt;Did you ever experience a program failing to load its own data
files from the desktop file browser?  It is not a uncommon problem.  A
while back I discovered that the screencast recorder
gtk-recordmydesktop would save an Ogg Theora video file the KDE file
browser would refuse to open.  No video player claimed to understand
such file.  I tracked down the cause being &lt;tt&gt;file --mime-type&lt;/tt&gt;
returning the application/ogg MIME type, which no video player I had
installed listed as a MIME type they would understand.  I asked for
&lt;a href=&quot;http://bugs.gw.com/view.php?id=382&quot;&gt;file to change its
behavour&lt;/a&gt; and use the MIME type video/ogg instead.  I also asked
several video players to add video/ogg to their desktop files, to give
the file browser an idea what to do about Ogg Theora files.  After a
while, the desktop file browsers in Debian started to handle the
output from gtk-recordmydesktop properly.&lt;/p&gt;

&lt;p&gt;But history repeats itself.  A few days ago I tested the music
system Rosegarden again, and I discovered that the KDE and xfce file
browsers did not know what to do with the Rosegarden project files
(*.rg).  I&#39;ve reported &lt;a href=&quot;http://bugs.debian.org/825993&quot;&gt;the
rosegarden problem to BTS&lt;/a&gt; and a fix is commited to git and will be
included in the next upload.  To increase the chance of me remembering
how to fix the problem next time some program fail to load its files
from the file browser, here are some notes on how to fix it.&lt;/p&gt;

&lt;p&gt;The file browsers in Debian in general operates on MIME types.
There are two sources for the MIME type of a given file.  The output from
&lt;tt&gt;file --mime-type&lt;/tt&gt; mentioned above, and the content of the
shared MIME type registry (under /usr/share/mime/).  The file MIME
type is mapped to programs supporting the MIME type, and this
information is collected from
&lt;a href=&quot;https://www.freedesktop.org/wiki/Specifications/desktop-entry-spec/&quot;&gt;the
desktop files&lt;/a&gt; available in /usr/share/applications/.  If there is
one desktop file claiming support for the MIME type of the file, it is
activated when asking to open a given file.  If there are more, one
can normally select which one to use by right-clicking on the file and
selecting the wanted one using &#39;Open with&#39; or similar.  In general
this work well.  But it depend on each program picking a good MIME
type (preferably
&lt;a href=&quot;http://www.iana.org/assignments/media-types/media-types.xhtml&quot;&gt;a
MIME type registered with IANA&lt;/a&gt;), file and/or the shared MIME
registry recognizing the file and the desktop file to list the MIME
type in its list of supported MIME types.&lt;/p&gt;

&lt;p&gt;The &lt;tt&gt;/usr/share/mime/packages/rosegarden.xml&lt;/tt&gt; entry for
&lt;a href=&quot;http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec&quot;&gt;the
Shared MIME database&lt;/a&gt; look like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
&amp;lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&amp;gt;
&amp;lt;mime-info xmlns=&quot;http://www.freedesktop.org/standards/shared-mime-info&quot;&amp;gt;
  &amp;lt;mime-type type=&quot;audio/x-rosegarden&quot;&amp;gt;
    &amp;lt;sub-class-of type=&quot;application/x-gzip&quot;/&amp;gt;
    &amp;lt;comment&amp;gt;Rosegarden project file&amp;lt;/comment&amp;gt;
    &amp;lt;glob pattern=&quot;*.rg&quot;/&amp;gt;
  &amp;lt;/mime-type&amp;gt;
&amp;lt;/mime-info&amp;gt;
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;This states that audio/x-rosegarden is a kind of application/x-gzip
(it is a gzipped XML file).  Note, it is much better to use an
official MIME type registered with IANA than it is to make up ones own
unofficial ones like the x-rosegarden type used by rosegarden.&lt;/p&gt;

&lt;p&gt;The desktop file of the rosegarden program failed to list
audio/x-rosegarden in its list of supported MIME types, causing the
file browsers to have no idea what to do with *.rg files:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
% grep Mime /usr/share/applications/rosegarden.desktop
MimeType=audio/x-rosegarden-composition;audio/x-rosegarden-device;audio/x-rosegarden-project;audio/x-rosegarden-template;audio/midi;
X-KDE-NativeMimeType=audio/x-rosegarden-composition
%
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The fix was to add &quot;audio/x-rosegarden;&quot; at the end of the
MimeType= line.&lt;/p&gt;

&lt;p&gt;If you run into a file which fail to open the correct program when
selected from the file browser, please check out the output from
&lt;tt&gt;file --mime-type&lt;/tt&gt; for the file, ensure the file ending and
MIME type is registered somewhere under /usr/share/mime/ and check
that some desktop file under /usr/share/applications/ is claiming
support for this MIME type.  If not, please report a bug to have it
fixed. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Tor - from its creators mouth 11 years ago</title>
                <link>http://people.skolelinux.org/pere/blog/Tor___from_its_creators_mouth_11_years_ago.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Tor___from_its_creators_mouth_11_years_ago.html</guid>
                <pubDate>Sat, 28 May 2016 14:20:00 +0200</pubDate>
                <description>&lt;p&gt;A little more than 11 years ago, one of the creators of Tor, and
the current President of &lt;a href=&quot;https://www.torproject.org/&quot;&gt;the Tor
project&lt;/a&gt;, Roger Dingledine, gave a talk for the members of the
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;Norwegian Unix User group&lt;/a&gt; (NUUG).  A
video of the talk was recorded, and today, thanks to the great help
from David Noble, I finally was able to publish the video of the talk
on Frikanalen, the Norwegian open channel TV station where NUUG
currently publishes its talks.  You can
&lt;a href=&quot;http://frikanalen.no/se&quot;&gt;watch the live stream using a web
browser&lt;/a&gt; with WebM support, or check out the recording on the video
on demand page for the talk
&quot;&lt;a href=&quot;http://beta.frikanalen.no/video/625599&quot;&gt;Tor: Anonymous
communication for the US Department of Defence...and you.&lt;/a&gt;&quot;.&lt;/p&gt;

&lt;p&gt;Here is the video included for those of you using browsers with
HTML video and Ogg Theora support:&lt;/p&gt;

&lt;p&gt;&lt;video width=&quot;70%&quot; poster=&quot;http://simula.gunkies.org/media/625599/large_thumb/20050421-tor-frikanalen.jpg&quot; controls&gt;
  &lt;source src=&quot;http://simula.gunkies.org/media/625599/theora/20050421-tor-frikanalen.ogv&quot; type=&quot;video/ogg&quot;/&gt;
&lt;/video&gt;&lt;/p&gt;

&lt;p&gt;I guess the gist of the talk can be summarised quite simply: If you
want to help the military in USA (and everyone else), use Tor. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Isenkram with PackageKit support - new version 0.23 available in Debian unstable</title>
                <link>http://people.skolelinux.org/pere/blog/Isenkram_with_PackageKit_support___new_version_0_23_available_in_Debian_unstable.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Isenkram_with_PackageKit_support___new_version_0_23_available_in_Debian_unstable.html</guid>
                <pubDate>Wed, 25 May 2016 10:20:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;https://tracker.debian.org/pkg/isenkram&quot;&gt;The isenkram
system&lt;/a&gt; is a user-focused solution in Debian for handling hardware
related packages.  The idea is to have a database of mappings between
hardware and packages, and pop up a dialog suggesting for the user to
install the packages to use a given hardware dongle.  Some use cases
are when you insert a Yubikey, it proposes to install the software
needed to control it; when you insert a braille reader list it
proposes to install the packages needed to send text to the reader;
and when you insert a ColorHug screen calibrator it suggests to
install the driver for it.  The system work well, and even have a few
command line tools to install firmware packages and packages for the
hardware already in the machine (as opposed to hotpluggable hardware).&lt;/p&gt;

&lt;p&gt;The system was initially written using aptdaemon, because I found
good documentation and example code on how to use it.  But aptdaemon
is going away and is generally being replaced by
&lt;a href=&quot;http://www.freedesktop.org/software/PackageKit/&quot;&gt;PackageKit&lt;/a&gt;,
so Isenkram needed a rewrite.  And today, thanks to the great patch
from my college Sunil Mohan Adapa in the FreedomBox project, the
rewrite finally took place.  I&#39;ve just uploaded a new version of
Isenkram into Debian Unstable with the patch included, and the default
for the background daemon is now to use PackageKit.  To check it out,
install the &lt;tt&gt;isenkram&lt;/tt&gt; package and insert some hardware dongle
and see if it is recognised.&lt;/p&gt;

&lt;p&gt;If you want to know what kind of packages isenkram would propose for
the machine it is running on, you can check out the isenkram-lookup
program.  This is what it look like on a Thinkpad X230:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
% isenkram-lookup 
bluez
cheese
fprintd
fprintd-demo
gkrellm-thinkbat
hdapsd
libpam-fprintd
pidgin-blinklight
thinkfan
tleds
tp-smapi-dkms
tp-smapi-source
tpb
%p
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The hardware mappings come from several places.  The preferred way
is for packages to announce their hardware support using
&lt;a href=&quot;https://www.freedesktop.org/software/appstream/docs/&quot;&gt;the
cross distribution appstream system&lt;/a&gt;.
See
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/tags/isenkram/&quot;&gt;previous
blog posts about isenkram&lt;/a&gt; to learn how to do that.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Discharge rate estimate in new battery statistics collector for Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Discharge_rate_estimate_in_new_battery_statistics_collector_for_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Discharge_rate_estimate_in_new_battery_statistics_collector_for_Debian.html</guid>
                <pubDate>Mon, 23 May 2016 09:35:00 +0200</pubDate>
                <description>&lt;p&gt;Yesterday I updated the
&lt;a href=&quot;https://tracker.debian.org/pkg/battery-stats&quot;&gt;battery-stats
package in Debian&lt;/a&gt; with a few patches sent to me by skilled and
enterprising users.  There were some nice user and visible changes.
First of all, both desktop menu entries now work.  A design flaw in
one of the script made the history graph fail to show up (its PNG was
dumped in ~/.xsession-errors) if no controlling TTY was available.
The script worked when called from the command line, but not when
called from the desktop menu.  I changed this to look for a DISPLAY
variable or a TTY before deciding where to draw the graph, and now the
graph window pop up as expected.&lt;/p&gt;

&lt;p&gt;The next new feature is a discharge rate estimator in one of the
graphs (the one showing the last few hours).  New is also the user of
colours showing charging in blue and discharge in red.  The percentages
of this graph is relative to last full charge, not battery design
capacity.&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2016-05-23-battery-stats-rate.png&quot;/&gt;&lt;/p&gt;

&lt;p&gt;The other graph show the entire history of the collected battery
statistics, comparing it to the design capacity of the battery to
visualise how the battery life time get shorter over time.  The red
line in this graph is what the previous graph considers 100 percent:

&lt;p align=&quot;center&quot;&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2016-05-23-battery-stats-history.png&quot;/&gt;&lt;/p&gt;

&lt;p&gt;In this graph you can see that I only charge the battery to 80
percent of last full capacity, and how the capacity of the battery is
shrinking. :(&lt;/p&gt;

&lt;p&gt;The last new feature is in the collector, which now will handle
more hardware models.  On some hardware, Linux power supply
information is stored in /sys/class/power_supply/ACAD/, while the
collector previously only looked in /sys/class/power_supply/AC/.  Now
both are checked to figure if there is power connected to the
machine.&lt;/p&gt;

&lt;p&gt;If you are interested in how your laptop battery is doing, please
check out the
&lt;a href=&quot;https://tracker.debian.org/pkg/battery-stats&quot;&gt;battery-stats&lt;/a&gt;
in Debian unstable, or rebuild it on Jessie to get it working on
Debian stable. :) The upstream source is available from &lt;a
href=&quot;https://github.com/petterreinholdtsen/battery-stats&quot;&gt;github&lt;/a&gt;.
Patches are very welcome.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>French edition of Lawrence Lessigs book Cultura Libre on Amazon and Barnes &amp; Noble</title>
                <link>http://people.skolelinux.org/pere/blog/French_edition_of_Lawrence_Lessigs_book_Cultura_Libre_on_Amazon_and_Barnes___Noble.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/French_edition_of_Lawrence_Lessigs_book_Cultura_Libre_on_Amazon_and_Barnes___Noble.html</guid>
                <pubDate>Sat, 21 May 2016 10:50:00 +0200</pubDate>
                <description>&lt;p&gt;A few weeks ago the French paperback edition of Lawrence Lessigs
2004 book Cultura Libre was published.  Today I noticed that the book
is now available from book stores.  You can now buy it from
&lt;a href=&quot;http://www.amazon.com/Culture-Libre-French-Lawrence-Lessig/dp/8269018260&quot;&gt;Amazon&lt;/a&gt;
($19.99),
&lt;a href=&quot;http://www.barnesandnoble.com/w/culture-libre-lawrence-lessig/1123776705&quot;&gt;Barnes
&amp; Noble&lt;/a&gt; ($?) and as always from
&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html&quot;&gt;Lulu.com&lt;/a&gt;
($19.99).  The revenue is donated to the Creative Commons project.  If
you buy from Lulu.com, they currently get $10.59, while if you buy
from one of the book stores most of the revenue go to the book store
and the Creative Commons project get much (not sure how much
less).&lt;/p&gt;

&lt;p&gt;I was a bit surprised to discover that there is a kindle edition
sold by Amazon Digital Services LLC on Amazon.  Not quite sure how
that edition was created, but if you want to download a electronic
edition (PDF, EPUB, Mobi) generated from the same files used to create
the paperback edition, they are
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;available
from github&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>I want the courts to be involved before the police can hijack a news site DNS domain (#domstolkontroll)</title>
                <link>http://people.skolelinux.org/pere/blog/I_want_the_courts_to_be_involved_before_the_police_can_hijack_a_news_site_DNS_domain___domstolkontroll_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/I_want_the_courts_to_be_involved_before_the_police_can_hijack_a_news_site_DNS_domain___domstolkontroll_.html</guid>
                <pubDate>Thu, 19 May 2016 14:00:00 +0200</pubDate>
                <description>&lt;p&gt;I just donated to the
&lt;a href=&quot;http://www.nuug.no/dns-beslag-donasjon.shtml&quot;&gt;NUUG defence
&quot;fond&quot;&lt;/a&gt; to fund the effort in Norway to get the seizure of the news
site popcorn-time.no tested in court.  I hope everyone that agree with
me will do the same.&lt;/p&gt;

&lt;p&gt;Would you be worried if you knew the police in your country could
hijack DNS domains of news sites covering free software system without
talking to a judge first?  I am.  What if the free software system
combined search engine lookups, bittorrent downloads and video playout
and was called Popcorn Time?  Would that affect your view?  It still
make me worried.&lt;/p&gt;

&lt;p&gt;In March 2016, the Norwegian police seized (as in forced NORID to
change the IP address pointed to by it to one controlled by the
police) the DNS domain popcorn-time.no, without any supervision from
the courts.  I did not know about the web site back then, and assumed
the courts had been involved, and was very surprised when I discovered
that the police had hijacked the DNS domain without asking a judge for
permission first.  I was even more surprised when I had a look at
&lt;a href=&quot;https://web.archive.org/web/*/http://popcorn-time.no&quot;&gt;the web
site content on the Internet Archive&lt;/A&gt;, and only found news coverage
about Popcorn Time, not any material published without the right
holders permissions.&lt;/p&gt;

&lt;p&gt;The seizure was widely covered in the Norwegian press (see for
example &lt;a href=&quot;http://www.hegnar.no/Nyheter/Naeringsliv/2016/03/Popcorn-time.no-beslaglagt-av-OEkokrim&quot;&gt;Hegnar Online&lt;/a&gt; and
&lt;a href=&quot;http://itavisen.no/2016/03/08/okokrim-har-beslaglagt-popcorn-time-no/&quot;&gt;ITavisen&lt;a/&gt;
and
&lt;a href=&quot;http://www.nrk.no/kultur/okokrim-gar-til-aksjon-mot-popcorn-time-1.12842452&quot;&gt;NRK&lt;/a&gt;),
at first due to the press release sent out by Økokrim, but then based
on
&lt;a href=&quot;http://blogg.torvund.net/2016/03/09/okokrims-beslag-i-domenet-popcorn-time-no/&quot;&gt;protests
from the law professor Olav Torvund&lt;/a&gt; and
&lt;a href=&quot;http://www.klassekampen.no/article/20160311/ARTICLE/160319995&quot;&gt;lawyer
Jon Wessel-Aas&lt;/a&gt;.  It even got some
&lt;a href=&quot;https://torrentfreak.com/norwegian-authorities-sued-over-popcorn-time-domain-seizure-160418/&quot;&gt;coverage
on TorrentFreak&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/NUUG_contests_Norwegian_police_DNS_seizure_of_popcorn_time_no.html&quot;&gt;
wrote about the case a month ago&lt;/a&gt;, when the
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;Norwegian Unix User Group&lt;/a&gt; (NUUG),
where I am an active member, decided to ask the courts to test this seizure.
The request was denied, but NUUG and its co-requestor EFN have not
given up, and now they are rallying for support to get the seizure
legally challenged.  They accept both bank and Bitcoin transfer for
those that want to support the request.&lt;/p&gt;

&lt;p&gt;If you as me believe news sites about free software should not be
censored, even if the free software have both legal and illegal
applications, and that DNS hijacking should be tested by the courts, I
suggest you &lt;a href=&quot;http://www.nuug.no/dns-beslag-donasjon.shtml&quot;&gt;show
your support by donating to NUUG&lt;/a&gt;.&lt;/a&gt;
</description>
        </item>
        
        <item>
                <title>Debian now with ZFS on Linux included</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_now_with_ZFS_on_Linux_included.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_now_with_ZFS_on_Linux_included.html</guid>
                <pubDate>Thu, 12 May 2016 07:30:00 +0200</pubDate>
                <description>&lt;p&gt;Today, after many years of hard work from many people,
&lt;a href=&quot;http://zfsonlinux.org/&quot;&gt;ZFS for Linux&lt;/a&gt; finally entered
Debian.  The package status can be seen on
&lt;a href=&quot;https://tracker.debian.org/pkg/zfs-linux&quot;&gt;the package tracker
for zfs-linux&lt;/a&gt;.  and
&lt;a href=&quot;https://qa.debian.org/developer.php?login=pkg-zfsonlinux-devel@lists.alioth.debian.org&quot;&gt;the
team status page&lt;/a&gt;. If you want to help out, please join us.
&lt;a href=&quot;http://anonscm.debian.org/gitweb/?p=pkg-zfsonlinux/zfs.git&quot;&gt;The
source code&lt;/a&gt; is available via git on Alioth.  It would also be
great if you could help out with
&lt;a href=&quot;https://tracker.debian.org/pkg/dkms&quot;&gt;the dkms package&lt;/a&gt;, as
it is an important piece of the puzzle to get ZFS working.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>What is the best multimedia player in Debian?</title>
                <link>http://people.skolelinux.org/pere/blog/What_is_the_best_multimedia_player_in_Debian_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_is_the_best_multimedia_player_in_Debian_.html</guid>
                <pubDate>Sun, 8 May 2016 09:40:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;strong&gt;Where I set out to figure out which multimedia player in
Debian claim support for most file formats.&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;A few years ago, I had a look at the media support for Browser
plugins in Debian, to get an idea which plugins to include in Debian
Edu.  I created a script to extract the set of supported MIME types
for each plugin, and used this to find out which multimedia browser
plugin supported most file formats / media types.
&lt;a href=&quot;https://wiki.debian.org/DebianEdu/BrowserMultimedia&quot;&gt;The
result&lt;/a&gt; can still be seen on the Debian wiki, even though it have
not been updated for a while.  But browser plugins are less relevant
these days, so I thought it was time to look at standalone
players.&lt;/p&gt;

&lt;p&gt;A few days ago I was tired of VLC not being listed as a viable
player when I wanted to play videos from the Norwegian National
Broadcasting Company, and decided to investigate why.  The cause is a
&lt;a href=&quot;https://bugs.debian.org/822245&quot;&gt;missing MIME type in the VLC
desktop file&lt;/a&gt;.  In the process I wrote a script to compare the set
of MIME types announced in the desktop file and the browser plugin,
only to discover that there is quite a large difference between the
two for VLC.  This discovery made me dig up the script I used to
compare browser plugins, and adjust it to compare desktop files
instead, to try to figure out which multimedia player in Debian
support most file formats.&lt;/p&gt;

&lt;p&gt;The result can be seen on the Debian Wiki, as
&lt;a href=&quot;https://wiki.debian.org/DebianMultimedia/PlayerSupport&quot;&gt;a
table listing all MIME types supported by one of the packages included
in the table&lt;/a&gt;, with the package supporting most MIME types being
listed first in the table.&lt;/p&gt;

&lt;/p&gt;The best multimedia player in Debian?  It is totem, followed by
parole, kplayer, mpv, vlc, smplayer mplayer-gui gnome-mpv and
kmplayer.  Time for the other players to update their announced MIME
support?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The Pyra - handheld computer with Debian preinstalled</title>
                <link>http://people.skolelinux.org/pere/blog/The_Pyra___handheld_computer_with_Debian_preinstalled.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_Pyra___handheld_computer_with_Debian_preinstalled.html</guid>
                <pubDate>Wed, 4 May 2016 10:00:00 +0200</pubDate>
                <description>A friend of mine made me aware of
&lt;a href=&quot;https://pyra-handheld.com/boards/pages/pyra/&quot;&gt;The Pyra&lt;/a&gt;, a
handheld computer which will be delivered with Debian preinstalled.  I
would love to get one of those for my birthday. :)&lt;/p&gt;

&lt;p&gt;The machine is a complete ARM-based PC with micro HDMI, SATA, USB
plugs and many others connectors, and include a full keyboard and a 5&quot;
LCD touch screen.  The 6000mAh battery is claimed to provide a whole
day of battery life time, but I have not seen any independent tests
confirming this.  The vendor is still collecting preorders, and the
last I heard last night was that 22 more orders were needed before
production started.&lt;/p&gt;

&lt;p&gt;As far as I know, this is the first handheld preinstalled with
Debian.  Please let me know if you know of any others.  Is it the
first computer being sold with Debian preinstalled?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>NUUG contests Norwegian police DNS seizure of popcorn-time.no</title>
                <link>http://people.skolelinux.org/pere/blog/NUUG_contests_Norwegian_police_DNS_seizure_of_popcorn_time_no.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/NUUG_contests_Norwegian_police_DNS_seizure_of_popcorn_time_no.html</guid>
                <pubDate>Mon, 18 Apr 2016 10:00:00 +0200</pubDate>
                <description>&lt;p&gt;It is days like today I am really happy to be a member of
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;the Norwegian Unix User group&lt;/a&gt;, a
member association for those of us believing in free software, open
standards and unix-like operating systems.  NUUG announced today it
will
&lt;a href=&quot;http://www.nuug.no/news/Pressemelding__NUUG_og_EFN_begj_rer_rettslig_pr_ving_for_DNS_domenebeslag_av_popcorn_time_no.shtml&quot;&gt;try
to bring the seizure of the DNS domain popcorn-time.no as
unlawful&lt;/a&gt;, to stand up for the principle that writing about a
controversial topic is not infringing copyrights, and censuring web
pages by hijacking DNS domain should be decided by the courts, not the
police.  The DNS domain was seized by the Norwegian National Authority
for Investigation and Prosecution of Economic and Environmental Crime
a month ago.  I hope this bring more paying members to NUUG to give
the association the financial muscle needed to bring this case as far
as it must go to stop this kind of DNS hijacking.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>I.F. Stone - an inspiration for us all</title>
                <link>http://people.skolelinux.org/pere/blog/I_F__Stone___an_inspiration_for_us_all.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/I_F__Stone___an_inspiration_for_us_all.html</guid>
                <pubDate>Wed, 13 Apr 2016 21:20:00 +0200</pubDate>
                <description>&lt;p&gt;I first got to know I.F. Stone when I came across an article by Jon
Schwarz on The Intercept
&lt;a href=&quot;https://theintercept.com/2015/05/07/new-documentary-legacy-f-stone/&quot;&gt;about
his extraordinary contribution to investigative journalism in
USA&lt;/a&gt;. The article is about a new documentary in two parts
(&lt;a href=&quot;https://vimeo.com/123974841&quot;&gt;part one is 12 minutes&lt;/a&gt; and
&lt;a href=&quot;https://vimeo.com/123974842&quot;&gt;part two is 30 minutes&lt;/a&gt;), and
I found both truly fascinating.  It is amazing what he was able to
find by digging up public sources and government papers.  He
documented lots of government abuse and cover ups, and I find
&lt;a href=&quot;http://www.ifstone.org/weekly.php&quot;&gt;his weekly news letters&lt;/a&gt;
inspiring to read even today.&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
All governments are run by liars and nothing they say should be believed. 
&lt;br&gt;- I. F. Stone
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;His starting point was that reporters should not assume governments
and corporations are telling the truth, but verify all their claims as
much as possible.  I wonder how many Norwegian reporters can be said
to follow the principles of I. F. Stone.  They are definitely in short
supply.  If you, like me half a year ago, have never heard of him,
check him out.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A French paperback edition of the book Free Culture by Lawrence Lessig is now available</title>
                <link>http://people.skolelinux.org/pere/blog/A_French_paperback_edition_of_the_book_Free_Culture_by_Lawrence_Lessig_is_now_available.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_French_paperback_edition_of_the_book_Free_Culture_by_Lawrence_Lessig_is_now_available.html</guid>
                <pubDate>Tue, 12 Apr 2016 10:40:00 +0200</pubDate>
                <description>&lt;p&gt;I&#39;m happy to report that
&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html&quot;&gt;the
French paperback edition&lt;/a&gt; of
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;my
project to translate&lt;/a&gt; the &lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free
Culture&lt;/a&gt; book by Lawrence Lessig is now available for sale on
Lulu.com.  Once I have formally verified my proof reading copy, which
should be in the mail, the paperback edition should be available in
book stores like Amazon and Barnes &amp; Noble too.&lt;/p&gt;

&lt;p&gt;This French edition, Culture Libre, is the work of the
&lt;a href=&quot;http://dblatex.sourceforge.net/&quot;&gt;dblatex&lt;/a&gt; developer Benoît
Guillon, who created the PO file from the initial translation
available from
&lt;a href=&quot;http://www.wikilivres.ca/wiki/Culture_libre&quot;&gt;the Wikilivres
wiki pages&lt;/a&gt; and completed and corrected the translation to match
the original docbook edition my project is using, as well as
coordinated the proof reading of the final result.  I believe the end
result look great, but I am biased and do not read French.  In
addition to the paperback edition, the book is available in PDF, EPUB
and Mobi format from the github project page linked to above.&lt;/p&gt;

&lt;p&gt;When enabling book store distribution on Lulu.com, I had to nearly
triple the price to allow the book stores some profit.  I also had to
accept that I will get some revenue when a book is sold via Lulu.com.
But because of the non-commercial clause in the book license
(CC-BY-NC), this might be a problem.  To bypass the problem I
discussed how to handle the revenue with the author, and we agreed
that the revenue for these editions go to the
&lt;a href=&quot;https://creativecommons.org/&quot;&gt;Creative Commons non-profit
Corporation&lt;/a&gt; who handle donations to the Creative Commons project.
So far they have earned around USD 70 on sales of the
&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22440520.html&quot;&gt;English&lt;/a&gt;
and
&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html&quot;&gt;Norwegian
Bokmål&lt;/a&gt; editions, according to Lulu.com.  They will get the revenue
for the French edition too.  Their revenue is higher if you buy the
book directly from Lulu.com instead of via a book store, so I
recommend you buy directly from Lulu.com.&lt;/p&gt;

&lt;p&gt;Perhaps you would like to get the book published in your language?
The translation is done using a web based translator service, so the
technical bar to enter is fairly low.  Get in touch if you would like
to make this happen.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Lets make a Norwegian Bokmål edition of The Debian Administrator&#39;s Handbook</title>
                <link>http://people.skolelinux.org/pere/blog/Lets_make_a_Norwegian_Bokm_l_edition_of_The_Debian_Administrator_s_Handbook.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lets_make_a_Norwegian_Bokm_l_edition_of_The_Debian_Administrator_s_Handbook.html</guid>
                <pubDate>Sun, 10 Apr 2016 23:20:00 +0200</pubDate>
                <description>&lt;p&gt;During this weekends
&lt;a href=&quot;http://www.nuug.no/news/Oslo__Takk_for_feilfiksingsfesten.shtml&quot;&gt;bug
squashing party and developer gathering&lt;/a&gt;, we decided to do our part
to make sure there are good books about Debian available in Norwegian
Bokmål, and got in touch with the people behind the
&lt;a href=&quot;http://debian-handbook.info/&quot;&gt;Debian Administrator&#39;s Handbook
project&lt;/a&gt; to get started.  If you want to help out, please start
contributing using
&lt;a href=&quot;https://hosted.weblate.org/projects/debian-handbook/&quot;&gt;the
hosted weblate project page&lt;/a&gt;, and get in touch using
&lt;a href=&quot;http://lists.alioth.debian.org/mailman/listinfo/debian-handbook-translators&quot;&gt;the
translators mailing list&lt;/a&gt;.  Please also check out
&lt;a href=&quot;https://debian-handbook.info/contribute/&quot;&gt;the instructions for
contributors&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The book is already available on paper in English, French and
Japanese, and our goal is to get it available on paper in Norwegian
Bokmål too.  In addition to the paper edition, there are also EPUB and
Mobi versions available.  And there are incomplete translations
available for many more languages.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>One in two hundred Debian users using ZFS on Linux?</title>
                <link>http://people.skolelinux.org/pere/blog/One_in_two_hundred_Debian_users_using_ZFS_on_Linux_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/One_in_two_hundred_Debian_users_using_ZFS_on_Linux_.html</guid>
                <pubDate>Thu, 7 Apr 2016 22:30:00 +0200</pubDate>
                <description>&lt;p&gt;Just for fun I had a look at the popcon number of ZFS related
packages in Debian, and was quite surprised with what I found.  I use
ZFS myself at home, but did not really expect many others to do so.
But I might be wrong.&lt;/p&gt;

&lt;p&gt;According to
&lt;a href=&quot;https://qa.debian.org/popcon.php?package=spl-linux&quot;&gt;the popcon
results for spl-linux&lt;/a&gt;, there are 1019 Debian installations, or
0.53% of the population, with the package installed.  As far as I know
the only use of the spl-linux package is as a support library for ZFS
on Linux, so I use it here as proxy for measuring the number of ZFS
installation on Linux in Debian.  In the kFreeBSD variant of Debian
the ZFS feature is already available, and there
&lt;a href=&quot;https://qa.debian.org/popcon.php?package=zfsutils&quot;&gt;the popcon
results for zfsutils&lt;/a&gt; show 1625 Debian installations or 0.84% of
the population.  So I guess I am not alone in using ZFS on Debian.&lt;/p&gt;

&lt;p&gt;But even though the Debian project leader Lucas Nussbaum
&lt;a href=&quot;https://lists.debian.org/debian-devel-announce/2015/04/msg00006.html&quot;&gt;announced
in April 2015&lt;/a&gt; that the legal obstacles blocking ZFS on Debian were
cleared, the package is still not in Debian.  The package is again in
the NEW queue.  Several uploads have been rejected so far because the
debian/copyright file was incomplete or wrong, but there is no reason
to give up.  The current status can be seen on
&lt;a href=&quot;https://qa.debian.org/developer.php?login=pkg-zfsonlinux-devel@lists.alioth.debian.org&quot;&gt;the
team status page&lt;/a&gt;, and
&lt;a href=&quot;http://anonscm.debian.org/gitweb/?p=pkg-zfsonlinux/zfs.git&quot;&gt;the
source code&lt;/a&gt; is available on Alioth.&lt;/p&gt;

&lt;p&gt;As I want ZFS to be included in next version of Debian to make sure
my home server can function in the future using only official Debian
packages, and the current blocker is to get the debian/copyright file
accepted by the FTP masters in Debian, I decided a while back to try
to help out the team.  This was the background for my blog post about
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Creating__updating_and_checking_debian_copyright_semi_automatically.html&quot;&gt;creating,
updating and checking debian/copyright semi-automatically&lt;/a&gt;, and I
used the techniques I explored there to try to find any errors in the
copyright file.  It is not very easy to check every one of the around
2000 files in the source package, but I hope we this time got it
right.  If you want to help out, check out the git source and try to
find missing entries in the debian/copyright file.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>syslog-trusted-timestamp - chain of trusted timestamps for your syslog</title>
                <link>http://people.skolelinux.org/pere/blog/syslog_trusted_timestamp___chain_of_trusted_timestamps_for_your_syslog.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/syslog_trusted_timestamp___chain_of_trusted_timestamps_for_your_syslog.html</guid>
                <pubDate>Sat, 2 Apr 2016 09:50:00 +0200</pubDate>
                <description>&lt;p&gt;Two years ago, I had
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html&quot;&gt;a
look at trusted timestamping options available&lt;/a&gt;, and among
other things noted a still open
&lt;a href=&quot;https://bugs.debian.org/742553&quot;&gt;bug in the tsget script&lt;/a&gt;
included in openssl that made it harder than necessary to use openssl
as a trusted timestamping client.  A few days ago I was told
&lt;a href=&quot;https:/www.difi.no/&quot;&gt;the Norwegian government office DIFI&lt;/a&gt; is
close to releasing their own trusted timestamp service, and in the
process I was happy to learn about a replacement for the tsget script
using only curl:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
openssl ts -query -data &quot;/etc/shells&quot; -cert -sha256 -no_nonce \
  | curl -s -H &quot;Content-Type: application/timestamp-query&quot; \
         --data-binary &quot;@-&quot; http://zeitstempel.dfn.de &gt; etc-shells.tsr
openssl ts -reply -text -in etc-shells.tsr
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;This produces a binary timestamp file (etc-shells.tsr) which can be
used to verify that the content of the file /etc/shell with the
calculated sha256 hash existed at the point in time when the request
was made.  The last command extract the content of the etc-shells.tsr
in human readable form.  The idea behind such timestamp is to be able
to prove using cryptography that the content of a file have not
changed since the file was stamped.&lt;/p&gt;

&lt;p&gt;To verify that the file on disk match the public key signature in
the timestamp file, run the following commands.  It make sure you have
the required certificate for the trusted timestamp service available
and use it to compare the file content with the timestamp.  In
production, one should of course use a better method to verify the
service certificate.&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
wget -O ca-cert.txt https://pki.pca.dfn.de/global-services-ca/pub/cacert/chain.txt
openssl ts -verify -data /etc/shells -in etc-shells.tsr -CAfile ca-cert.txt -text
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Wikipedia have a lot more information about
&lt;a href=&quot;https://en.wikipedia.org/wiki/Trusted_timestamping&quot;&gt;trusted
Timestamping&lt;/a&gt; and
&lt;a href=&quot;https://en.wikipedia.org/wiki/Linked_timestamping&quot;&gt;linked
timestamping&lt;/a&gt;, and there are several trusted timestamping services
around, both as commercial services and as free and public services.
Among the latter is
&lt;a href=&quot;https://www.pki.dfn.de/zeitstempeldienst/&quot;&gt;the
zeitstempel.dfn.de service&lt;/a&gt; mentioned above and
&lt;a href=&quot;https://freetsa.org/&quot;&gt;freetsa.org service&lt;/a&gt; linked to from the
wikipedia web site.  I believe the DIFI service should show up on
https://tsa.difi.no, but it is not available to the public at the
moment.  I hope this will change when it is into production.  The
&lt;a href=&quot;https://tools.ietf.org/html/rfc3161&quot;&gt;RFC 3161&lt;/a&gt; trusted
timestamping protocol standard is even implemented in LibreOffice,
Microsoft Office and Adobe Acrobat, making it possible to verify when
a document was created.&lt;/p&gt;

&lt;p&gt;I would find it useful to be able to use such trusted timestamp
service to make it possible to verify that my stored syslog files have
not been tampered with.  This is not a new idea.  I found one example
implemented on the Endian network appliances where
&lt;a href=&quot;http://help.endian.com/entries/21518508-Enabling-Timestamping-on-log-files-&quot;&gt;the
configuration of such feature was described in 2012&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;But I could not find any free implementation of such feature when I
searched, so I decided to try to
&lt;a href=&quot;https://github.com/petterreinholdtsen/syslog-trusted-timestamp&quot;&gt;build
a prototype named syslog-trusted-timestamp&lt;/a&gt;.  My idea is to
generate a timestamp of the old log files after they are rotated, and
store the timestamp in the new log file just after rotation.  This
will form a chain that would make it possible to see if any old log
files are tampered with.  But syslog is bad at handling kilobytes of
binary data, so I decided to base64 encode the timestamp and add an ID
and line sequence numbers to the base64 data to make it possible to
reassemble the timestamp file again.  To use it, simply run it like
this:

&lt;p&gt;&lt;pre&gt;
syslog-trusted-timestamp /path/to/list-of-log-files
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;This will send a timestamp from one or more timestamp services (not
yet decided nor implemented) for each listed file to the syslog using
logger(1).  To verify the timestamp, the same program is used with the
--verify option:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
syslog-trusted-timestamp --verify /path/to/log-file /path/to/log-with-timestamp
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The verification step is not yet well designed.  The current
implementation depend on the file path being unique and unchanging,
and this is not a solid assumption.  It also uses process number as
timestamp ID, and this is bound to create ID collisions.  I hope to
have time to come up with a better way to handle timestamp IDs and
verification later.&lt;/p&gt;

&lt;p&gt;Please check out
&lt;a href=&quot;https://github.com/petterreinholdtsen/syslog-trusted-timestamp&quot;&gt;the
prototype for syslog-trusted-timestamp on github&lt;/a&gt; and send
suggestions and improvement, or let me know if there already exist a
similar system for timestamping logs already to allow me to join
forces with others with the same interest.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Full battery stats collector is now available in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Full_battery_stats_collector_is_now_available_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Full_battery_stats_collector_is_now_available_in_Debian.html</guid>
                <pubDate>Wed, 23 Mar 2016 22:10:00 +0100</pubDate>
                <description>&lt;p&gt;Since this morning, the battery-stats package in Debian include an
extended collector that will collect the complete battery history for
later processing and graphing.  The original collector store the
battery level as percentage of last full level, while the new
collector also record battery vendor, model, serial number, design
full level, last full level and current battery level.  This make it
possible to predict the lifetime of the battery as well as visualise
the energy flow when the battery is charging or discharging.&lt;/p&gt;

&lt;p&gt;The new tools are available in &lt;tt&gt;/usr/share/battery-stats/&lt;/tt&gt;
in the version 0.5.1 package in unstable.  Get the new battery level graph
and lifetime prediction by running:

&lt;p&gt;&lt;pre&gt;
/usr/share/battery-stats/battery-stats-graph /var/log/battery-stats.csv
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Or select the &#39;Battery Level Graph&#39; from your application menu.&lt;/p&gt;

&lt;p&gt;The flow in/out of the battery can be seen by running (no menu
entry yet):&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
/usr/share/battery-stats/battery-stats-graph-flow
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;I&#39;m not quite happy with the way the data is visualised, at least
when there are few data points.  The graphs look a bit better with a
few years of data.&lt;/p&gt;

&lt;p&gt;A while back one important feature I use in the battery stats
collector broke in Debian.  The scripts in
&lt;tt&gt;/usr/lib/pm-utils/power.d/&lt;/tt&gt; were no longer executed.  I
suspect it happened when Jessie started using systemd, but I do not
know.  The issue is reported as
&lt;a href=&quot;https://bugs.debian.org/818649&quot;&gt;bug #818649&lt;/a&gt; against
pm-utils.  I managed to work around it by adding an udev rule to call
the collector script every time the power connector is connected and
disconnected.  With this fix in place it was finally time to make a
new release of the package, and get it into Debian.&lt;/p&gt;

&lt;p&gt;If you are interested in how your laptop battery is doing, please
check out the
&lt;a href=&quot;https://tracker.debian.org/pkg/battery-stats&quot;&gt;battery-stats&lt;/a&gt;
in Debian unstable, or rebuild it on Jessie to get it working on
Debian stable. :) The upstream source is available from
&lt;a href=&quot;https://github.com/petterreinholdtsen/battery-stats&quot;&gt;github&lt;/a&gt;.
As always, patches are very welcome.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>UsingQR - &quot;Electronic&quot; paper invoices using JSON and QR codes</title>
                <link>http://people.skolelinux.org/pere/blog/UsingQR____Electronic__paper_invoices_using_JSON_and_QR_codes.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/UsingQR____Electronic__paper_invoices_using_JSON_and_QR_codes.html</guid>
                <pubDate>Sat, 19 Mar 2016 09:40:00 +0100</pubDate>
                <description>&lt;p&gt;Back in 2013 I proposed
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/_Electronic__paper_invoices___using_vCard_in_a_QR_code.html&quot;&gt;a
way to make paper and PDF invoices easier to process electronically by
adding a QR code with the key information about the invoice&lt;/a&gt;.  I
suggested using vCard field definition, to get some standard format
for name and address, but any format would work.  I did not do
anything about the proposal, but hoped someone one day would make
something like it.  It would make it possible to efficiently send
machine readable invoices directly between seller and buyer.&lt;/p&gt;

&lt;p&gt;This was the background when I came across a proposal and
specification from the web based accounting and invoicing supplier
&lt;a href=&quot;http://www.visma.com/&quot;&gt;Visma&lt;/a&gt; in Sweden called
&lt;a href=&quot;http://usingqr.com/&quot;&gt;UsingQR&lt;/a&gt;.  Their PDF invoices contain
a QR code with the key information of the invoice in JSON format.
This is the typical content of a QR code following the UsingQR
specification (based on a real world example, some numbers replaced to
get a more bogus entry).  I&#39;ve reformatted the JSON to make it easier
to read.  Normally this is all on one long line:&lt;/p&gt;

&lt;p&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2016-03-19-qr-invoice.png&quot; align=&quot;right&quot;&gt;&lt;pre&gt;
{
 &quot;vh&quot;:500.00,
 &quot;vm&quot;:0,
 &quot;vl&quot;:0,
 &quot;uqr&quot;:1,
 &quot;tp&quot;:1,
 &quot;nme&quot;:&quot;Din Leverandør&quot;,
 &quot;cc&quot;:&quot;NO&quot;,
 &quot;cid&quot;:&quot;997912345 MVA&quot;,
 &quot;iref&quot;:&quot;12300001&quot;,
 &quot;idt&quot;:&quot;20151022&quot;,
 &quot;ddt&quot;:&quot;20151105&quot;,
 &quot;due&quot;:2500.0000,
 &quot;cur&quot;:&quot;NOK&quot;,
 &quot;pt&quot;:&quot;BBAN&quot;,
 &quot;acc&quot;:&quot;17202612345&quot;,
 &quot;bc&quot;:&quot;BIENNOK1&quot;,
 &quot;adr&quot;:&quot;0313 OSLO&quot;
}
&lt;/pre&gt;&lt;/p&gt;

&lt;/p&gt;The interpretation of the fields can be found in the
&lt;a href=&quot;http://usingqr.com/wp-content/uploads/2014/06/UsingQR_specification1.pdf&quot;&gt;format
specification&lt;/a&gt; (revision 2 from june 2014).  The format seem to
have most of the information needed to handle accounting and payment
of invoices, at least the fields I have needed so far here in
Norway.&lt;/p&gt;

&lt;p&gt;Unfortunately, the site and document do not mention anything about
the patent, trademark and copyright status of the format and the
specification.  Because of this, I asked the people behind it back in
November to clarify.  Ann-Christine Savlid (ann-christine.savlid (at)
visma.com) replied that Visma had not applied for patent or trademark
protection for this format, and that there were no copyright based
usage limitations for the format.  I urged her to make sure this was
explicitly written on the web pages and in the specification, but
unfortunately this has not happened yet.  So I guess if there is
submarine patents, hidden trademarks or a will to sue for copyright
infringements, those starting to use the UsingQR format might be at
risk, but if this happen there is some legal defense in the fact that
the people behind the format claimed it was safe to do so.  At least
with patents, there is always
&lt;a href=&quot;http://www.paperspecs.com/paper-news/beware-the-qr-code-patent-trap/&quot;&gt;a
chance of getting sued...&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;I also asked if they planned to maintain the format in an
independent standard organization to give others more confidence that
they would participate in the standardization process on equal terms
with Visma, but they had no immediate plans for this.  Their plan was
to work with banks to try to get more users of the format, and
evaluate the way forward if the format proved to be popular.  I hope
they conclude that using an open standard organisation like
&lt;a href=&quot;http://www.ietf.org/&quot;&gt;IETF&lt;/a&gt; is the correct place to
maintain such specification.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2016-03-20&lt;/strong&gt;: Via Twitter I became aware of
&lt;a href=&quot;https://news.ycombinator.com/item?id=11319492&quot;&gt;some comments
about this blog post&lt;/a&gt; that had several useful links and references to
similar systems.  In the Czech republic, the Czech Banking Association
standard #26, with short name SPAYD, uses QR codes with payment
information.  More information is available from the Wikipedia page on
&lt;a href=&quot;https://en.wikipedia.org/wiki/Short_Payment_Descriptor&quot;&gt;Short
Payment Descriptor&lt;/a&gt;.  And in Germany, there is a system named
&lt;a href=&quot;http://www.bezahlcode.de/&quot;&gt;BezahlCode&lt;/a&gt;,
(&lt;a href=&quot;http://www.bezahlcode.de/wp-content/uploads/BezahlCode_TechDok.pdf&quot;&gt;specification
v1.8 2013-12-05 available as PDF&lt;/a&gt;), which uses QR codes with
URL-like formatting using &quot;bank:&quot; as the URI schema/protocol to
provide the payment information.  There is also the
&lt;a href=&quot;http://www.ferd-net.de/front_content.php?idcat=231&quot;&gt;ZUGFeRD&lt;/a&gt;
file format that perhaps could be transfered using QR codes, but I am
not sure if it is done already.  Last, in Bolivia there are reports
that tax information since november 2014 need to be printed in QR
format on invoices.  I have not been able to track down a
specification for this format, because of my limited language skill
sets.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Making battery measurements a little easier in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Making_battery_measurements_a_little_easier_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Making_battery_measurements_a_little_easier_in_Debian.html</guid>
                <pubDate>Tue, 15 Mar 2016 15:00:00 +0100</pubDate>
                <description>&lt;p&gt;Back in September, I blogged about
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/The_life_and_death_of_a_laptop_battery.html&quot;&gt;the
system I wrote to collect statistics about my laptop battery&lt;/a&gt;, and
how it showed the decay and death of this battery (now replaced).  I
created a simple deb package to handle the collection and graphing,
but did not want to upload it to Debian as there were already
&lt;a href=&quot;https://tracker.debian.org/pkg/battery-stats&quot;&gt;a battery-stats
package in Debian&lt;/a&gt; that should do the same thing, and I did not see
a point of uploading a competing package when battery-stats could be
fixed instead.  I reported a few bugs about its non-function, and
hoped someone would step in and fix it.  But no-one did.&lt;/p&gt;

&lt;p&gt;I got tired of waiting a few days ago, and took matters in my own
hands.  The end result is that I am now the new upstream developer of
battery stats (&lt;a href=&quot;https://github.com/petterreinholdtsen/battery-stats&quot;&gt;available from github&lt;/a&gt;) and part of the team maintaining
battery-stats in Debian, and the package in Debian unstable is finally
able to collect battery status using the &lt;tt&gt;/sys/class/power_supply/&lt;/tt&gt;
information provided by the Linux kernel.  If you install the
battery-stats package from unstable now, you will be able to get a
graph of the current battery fill level, to get some idea about the
status of the battery.  The source package build and work just fine in
Debian testing and stable (and probably oldstable too, but I have not
tested).  The default graph you get for that system look like this:&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2016-03-15-battery-stats-graph-example.png&quot; width=&quot;70%&quot; align=&quot;center&quot;&gt;&lt;/p&gt;

&lt;p&gt;My plans for the future is to merge my old scripts into the
battery-stats package, as my old scripts collected a lot more details
about the battery.  The scripts are merged into the upstream
battery-stats git repository already, but I am not convinced they work
yet, as I changed a lot of paths along the way.  Will have to test a
bit more before I make a new release.&lt;/p&gt;

&lt;p&gt;I will also consider changing the file format slightly, as I
suspect the way I combine several values into one field might make it
impossible to know the type of the value when using it for processing
and graphing.&lt;/p&gt;

&lt;p&gt;If you would like I would like to keep an close eye on your laptop
battery, check out the battery-stats package in
&lt;a href=&quot;https://tracker.debian.org/pkg/battery-stats&quot;&gt;Debian&lt;/a&gt; and
on
&lt;a href=&quot;https://github.com/petterreinholdtsen/battery-stats&quot;&gt;github&lt;/a&gt;.
I would love some help to improve the system further.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Creating, updating and checking debian/copyright semi-automatically</title>
                <link>http://people.skolelinux.org/pere/blog/Creating__updating_and_checking_debian_copyright_semi_automatically.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Creating__updating_and_checking_debian_copyright_semi_automatically.html</guid>
                <pubDate>Fri, 19 Feb 2016 15:00:00 +0100</pubDate>
                <description>&lt;p&gt;Making packages for Debian requires quite a lot of attention to
details.  And one of the details is the content of the
debian/copyright file, which should list all relevant licenses used by
the code in the package in question, preferably in
&lt;a href=&quot;https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/&quot;&gt;machine
readable DEP5 format&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;For large packages with lots of contributors it is hard to write
and update this file manually, and if you get some detail wrong, the
package is normally rejected by the ftpmasters.  So getting it right
the first time around get the package into Debian faster, and save
both you and the ftpmasters some work..  Today, while trying to figure
out what was wrong with
&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686447&quot;&gt;the
zfsonlinux copyright file&lt;/a&gt;, I decided to spend some time on
figuring out the options for doing this job automatically, or at least
semi-automatically.&lt;/p&gt;

&lt;p&gt;Lucikly, there are at least two tools available for generating the
file based on the code in the source package,
&lt;tt&gt;&lt;a href=&quot;https://tracker.debian.org/pkg/debmake&quot;&gt;debmake&lt;/a&gt;&lt;/tt&gt;
and &lt;tt&gt;&lt;a href=&quot;https://tracker.debian.org/pkg/cme&quot;&gt;cme&lt;/a&gt;&lt;/tt&gt;.  I&#39;m
not sure which one of them came first, but both seem to be able to
create a sensible draft file.  As far as I can tell, none of them can
be trusted to get the result just right, so the content need to be
polished a bit before the file is OK to upload.  I found the debmake
option in
&lt;a href=&quot;http://goofying-with-debian.blogspot.com/2014/07/debmake-checking-source-against-dep-5.html&quot;&gt;a
blog posts from 2014&lt;/a&gt;.

&lt;p&gt;To generate using debmake, use the -cc option:

&lt;p&gt;&lt;pre&gt;
debmake -cc &gt; debian/copyright
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Note there are some problems with python and non-ASCII names, so
this might not be the best option.&lt;/p&gt;

&lt;p&gt;The cme option is based on a config parsing library, and I found
this approach in
&lt;a href=&quot;https://ddumont.wordpress.com/2015/04/05/improving-creation-of-debian-copyright-file/&quot;&gt;a
blog post from 2015&lt;/a&gt;.  To generate using cme, use the &#39;update
dpkg-copyright&#39; option:

&lt;p&gt;&lt;pre&gt;
cme update dpkg-copyright
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;This will create or update debian/copyright.  The cme tool seem to
handle UTF-8 names better than debmake.&lt;/p&gt;

&lt;p&gt;When the copyright file is created, I would also like some help to
check if the file is correct.  For this I found two good options,
&lt;tt&gt;debmake -k&lt;/tt&gt; and &lt;tt&gt;license-reconcile&lt;/tt&gt;.  The former seem
to focus on license types and file matching, and is able to detect
ineffective blocks in the copyright file.  The latter reports missing
copyright holders and years, but was confused by inconsistent license
names (like CDDL vs. CDDL-1.0).  I suspect it is good to use both and
fix all issues reported by them before uploading.  But I do not know
if the tools and the ftpmasters agree on what is important to fix in a
copyright file, so the package might still be rejected.&lt;/p&gt;

&lt;p&gt;The devscripts tool &lt;tt&gt;licensecheck&lt;/tt&gt; deserve mentioning.  It
will read through the source and try to find all copyright statements.
It is not comparing the result to the content of debian/copyright, but
can be useful when verifying the content of the copyright file.&lt;/p&gt;

&lt;p&gt;Are you aware of better tools in Debian to create and update
debian/copyright file.  Please let me know, or blog about it on
planet.debian.org.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2016-02-20&lt;/strong&gt;: I got a tip from Mike Gabriel
on how to use licensecheck and cdbs to create a draft copyright file

&lt;p&gt;&lt;pre&gt;
licensecheck --copyright -r `find * -type f` | \
  /usr/lib/cdbs/licensecheck2dep5 &gt; debian/copyright.auto
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;He mentioned that he normally check the generated file into the
version control system to make it easier to discover license and
copyright changes in the upstream source.  I will try to do the same
with my packages in the future.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2016-02-21&lt;/strong&gt;: The cme author recommended
against using -quiet for new users, so I removed it from the proposed
command line.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Using appstream in Debian to locate packages with firmware and mime type support</title>
                <link>http://people.skolelinux.org/pere/blog/Using_appstream_in_Debian_to_locate_packages_with_firmware_and_mime_type_support.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_appstream_in_Debian_to_locate_packages_with_firmware_and_mime_type_support.html</guid>
                <pubDate>Thu, 4 Feb 2016 16:40:00 +0100</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;https://wiki.debian.org/DEP-11&quot;&gt;appstream system&lt;/a&gt;
is taking shape in Debian, and one provided feature is a very
convenient way to tell you which package to install to make a given
firmware file available when the kernel is looking for it.  This can
be done using apt-file too, but that is for someone else to blog
about. :)&lt;/p&gt;

&lt;p&gt;Here is a small recipe to find the package with a given firmware
file, in this example I am looking for ctfw-3.2.3.0.bin, randomly
picked from the set of firmware announced using appstream in Debian
unstable.  In general you would be looking for the firmware requested
by the kernel during kernel module loading.  To find the package
providing the example file, do like this:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
% apt install appstream
[...]
% apt update
[...]
% appstreamcli what-provides firmware:runtime ctfw-3.2.3.0.bin | \
  awk &#39;/Package:/ {print $2}&#39;
firmware-qlogic
%
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;See &lt;a href=&quot;https://wiki.debian.org/AppStream/Guidelines&quot;&gt;the
appstream wiki&lt;/a&gt; page to learn how to embed the package metadata in
a way appstream can use.&lt;/p&gt;

&lt;p&gt;This same approach can be used to find any package supporting a
given MIME type.  This is very useful when you get a file you do not
know how to handle.  First find the mime type using &lt;tt&gt;file
--mime-type&lt;/tt&gt;, and next look up the package providing support for
it.  Lets say you got an SVG file.  Its MIME type is image/svg+xml,
and you can find all packages handling this type like this:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
% apt install appstream
[...]
% apt update
[...]
% appstreamcli what-provides mimetype image/svg+xml | \
  awk &#39;/Package:/ {print $2}&#39;
bkchem
phototonic
inkscape
shutter
tetzle
geeqie
xia
pinta
gthumb
karbon
comix
mirage
viewnior
postr
ristretto
kolourpaint4
eog
eom
gimagereader
midori
%
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;I believe the MIME types are fetched from the desktop file for
packages providing appstream metadata.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Creepy, visualise geotagged social media information - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/Creepy__visualise_geotagged_social_media_information___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Creepy__visualise_geotagged_social_media_information___nice_free_software.html</guid>
                <pubDate>Sun, 24 Jan 2016 10:50:00 +0100</pubDate>
                <description>&lt;p&gt;Most people seem not to realise that every time they walk around
with the computerised radio beacon known as a mobile phone their
position is tracked by the phone company and often stored for a long
time (like every time a SMS is received or sent).  And if their
computerised radio beacon is capable of running programs (often called
mobile apps) downloaded from the Internet, these programs are often
also capable of tracking their location (if the app requested access
during installation).  And when these programs send out information to
central collection points, the location is often included, unless
extra care is taken to not send the location.  The provided
information is used by several entities, for good and bad (what is
good and bad, depend on your point of view).  What is certain, is that
the private sphere and the right to free movement is challenged and
perhaps even eradicated for those announcing their location this way,
when they share their whereabouts with private and public
entities.&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;img width=&quot;70%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2016-01-24-nice-creepy-desktop-window.png&quot;&gt;&lt;/p&gt;

&lt;p&gt;The phone company logs provide a register of locations to check out
when one want to figure out what the tracked person was doing.  It is
unavailable for most of us, but provided to selected government
officials, company staff, those illegally buying information from
unfaithful servants and crackers stealing the information.  But the
public information can be collected and analysed, and a free software
tool to do so is called
&lt;a href=&quot;http://www.geocreepy.com/&quot;&gt;Creepy or Cree.py&lt;/a&gt;.  I
discovered it when I read
&lt;a href=&quot;http://www.aftenposten.no/kultur/Slik-kan-du-bli-overvaket-pa-Twitter-og-Instagram-uten-a-ane-det-7787884.html&quot;&gt;an
article about Creepy&lt;/a&gt; in the Norwegian newspaper Aftenposten i
November 2014, and decided to check if it was available in Debian.
The python program was in Debian, but
&lt;a href=&quot;https://tracker.debian.org/pkg/creepy&quot;&gt;the version in
Debian&lt;/a&gt; was completely broken and practically unmaintained.  I
uploaded a new version which did not work quite right, but did not
have time to fix it then.  This Christmas I decided to finally try to
get Creepy operational in Debian.  Now a fixed version is available in
Debian unstable and testing, and almost all Debian specific patches
are now included
&lt;a href=&quot;https://github.com/jkakavas/creepy&quot;&gt;upstream&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The Creepy program visualises geolocation information fetched from
Twitter, Instagram, Flickr and Google+, and allow one to get a
complete picture of every social media message posted recently in a
given area, or track the movement of a given individual across all
these services.  Earlier it was possible to use the search API of at
least some of these services without identifying oneself, but these
days it is impossible.  This mean that to use Creepy, you need to
configure it to log in as yourself on these services, and provide
information to them about your search interests.  This should be taken
into account when using Creepy, as it will also share information
about yourself with the services.&lt;/p&gt;

&lt;p&gt;The picture above show the twitter messages sent from (or at least
geotagged with a position from) the city centre of Oslo, the capital
of Norway.  One useful way to use Creepy is to first look at
information tagged with an area of interest, and next look at all the
information provided by one or more individuals who was in the area.
I tested it by checking out which celebrity provide their location in
twitter messages by checkout out who sent twitter messages near a
Norwegian TV station, and next could track their position over time,
making it possible to locate their home and work place, among other
things.  A similar technique have been
&lt;a href=&quot;http://www.buzzfeed.com/maxseddon/does-this-soldiers-instagram-account-prove-russia-is-covertl&quot;&gt;used
to locate Russian soldiers in Ukraine&lt;/a&gt;, and it is both a powerful
tool to discover lying governments, and a useful tool to help people
understand the value of the private information they provide to the
public.&lt;/p&gt;

&lt;p&gt;The package is not trivial to backport to Debian Stable/Jessie, as
it depend on several python modules currently missing in Jessie (at
least python-instagram, python-flickrapi and
python-requests-toolbelt).&lt;/p&gt;

&lt;p&gt;(I have uploaded
&lt;a href=&quot;https://screenshots.debian.net/package/creepy&quot;&gt;the image to
screenshots.debian.net&lt;/a&gt; and licensed it under the same terms as the
Creepy program in Debian.)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Always download Debian packages using Tor - the simple recipe</title>
                <link>http://people.skolelinux.org/pere/blog/Always_download_Debian_packages_using_Tor___the_simple_recipe.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Always_download_Debian_packages_using_Tor___the_simple_recipe.html</guid>
                <pubDate>Fri, 15 Jan 2016 00:30:00 +0100</pubDate>
                <description>&lt;p&gt;During his DebConf15 keynote, Jacob Appelbaum
&lt;a href=&quot;https://summit.debconf.org/debconf15/meeting/331/what-is-to-be-done/&quot;&gt;observed
that those listening on the Internet lines would have good reason to
believe a computer have a given security hole&lt;/a&gt; if it download a
security fix from a Debian mirror.  This is a good reason to always
use encrypted connections to the Debian mirror, to make sure those
listening do not know which IP address to attack.  In August, Richard
Hartmann observed that encryption was not enough, when it was possible
to interfere download size to security patches or the fact that
download took place shortly after a security fix was released, and
&lt;a href=&quot;http://richardhartmann.de/blog/posts/2015/08/24-Tor-enabled_Debian_mirror/&quot;&gt;proposed
to always use Tor to download packages from the Debian mirror&lt;/a&gt;.  He
was not the first to propose this, as the
&lt;tt&gt;&lt;a href=&quot;https://tracker.debian.org/pkg/apt-transport-tor&quot;&gt;apt-transport-tor&lt;/a&gt;&lt;/tt&gt;
package by Tim Retout already existed to make it easy to convince apt
to use &lt;a href=&quot;https://www.torproject.org/&quot;&gt;Tor&lt;/a&gt;, but I was not
aware of that package when I read the blog post from Richard.&lt;/p&gt;

&lt;p&gt;Richard discussed the idea with Peter Palfrader, one of the Debian
sysadmins, and he set up a Tor hidden service on one of the central
Debian mirrors using the address vwakviie2ienjx6t.onion, thus making
it possible to download packages directly between two tor nodes,
making sure the network traffic always were encrypted.&lt;/p&gt;

&lt;p&gt;Here is a short recipe for enabling this on your machine, by
installing &lt;tt&gt;apt-transport-tor&lt;/tt&gt; and replacing http and https
urls with tor+http and tor+https, and using the hidden service instead
of the official Debian mirror site.  I recommend installing
&lt;tt&gt;etckeeper&lt;/tt&gt; before you start to have a history of the changes
done in /etc/.&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
apt install apt-transport-tor
sed -i &#39;s% http://ftp.debian.org/% tor+http://vwakviie2ienjx6t.onion/%&#39; /etc/apt/sources.list
sed -i &#39;s% http% tor+http%&#39; /etc/apt/sources.list
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;If you have more sources listed in /etc/apt/sources.list.d/, run
the sed commands for these too.  The sed command is assuming your are
using the ftp.debian.org Debian mirror.  Adjust the command (or just
edit the file manually) to match your mirror.&lt;/p&gt;

&lt;p&gt;This work in Debian Jessie and later.  Note that tools like
&lt;tt&gt;apt-file&lt;/tt&gt; only recently started using the apt transport
system, and do not work with these tor+http URLs.  For
&lt;tt&gt;apt-file&lt;/tt&gt; you need the version currently in experimental,
which need a recent apt version currently only in unstable.  So if you
need a working &lt;tt&gt;apt-file&lt;/tt&gt;, this is not for you.&lt;/p&gt;

&lt;p&gt;Another advantage from this change is that your machine will start
using Tor regularly and at fairly random intervals (every time you
update the package lists or upgrade or install a new package), thus
masking other Tor traffic done from the same machine.  Using Tor will
become normal for the machine in question.&lt;/p&gt;

&lt;p&gt;On &lt;a href=&quot;https://wiki.debian.org/FreedomBox&quot;&gt;Freedombox&lt;/a&gt;, APT
is set up by default to use &lt;tt&gt;apt-transport-tor&lt;/tt&gt; when Tor is
enabled.  It would be great if it was the default on any Debian
system.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>OpenALPR, find car license plates in video streams - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/OpenALPR__find_car_license_plates_in_video_streams___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/OpenALPR__find_car_license_plates_in_video_streams___nice_free_software.html</guid>
                <pubDate>Wed, 23 Dec 2015 01:00:00 +0100</pubDate>
                <description>&lt;p&gt;When I was a kid, we used to collect &quot;car numbers&quot;, as we used to
call the car license plate numbers in those days.  I would write the
numbers down in my little book and compare notes with the other kids
to see how many region codes we had seen and if we had seen some
exotic or special region codes and numbers.  It was a fun game to pass
time, as we kids have plenty of it.&lt;/p&gt;

&lt;p&gt;A few days I came across
&lt;a href=&quot;https://github.com/openalpr/openalpr&quot;&gt;the OpenALPR
project&lt;/a&gt;, a free software project to automatically discover and
report license plates in images and video streams, and provide the
&quot;car numbers&quot; in a machine readable format.  I&#39;ve been looking for
such system for a while now, because I believe it is a bad idea that the
&lt;a href=&quot;https://en.wikipedia.org/wiki/Automatic_number_plate_recognition&quot;&gt;automatic
number plate recognition&lt;/a&gt; tool only is available in the hands of
the powerful, and want it to be available also for the powerless to
even the score when it comes to surveillance and sousveillance.  I
discovered the developer
&lt;a href=&quot;https://bugs.debian.org/747509&quot;&gt;wanted to get the tool into
Debian&lt;/a&gt;, and as I too wanted it to be in Debian, I volunteered to
help him get it into shape to get the package uploaded into the Debian
archive.&lt;/p&gt;

&lt;p&gt;Today we finally managed to get the package into shape and uploaded
it into Debian, where it currently
&lt;a href=&quot;https://ftp-master.debian.org//new/openalpr_2.2.1-1.html&quot;&gt;waits
in the NEW queue&lt;/a&gt; for review by the Debian ftpmasters.&lt;/p&gt;

&lt;p&gt;I guess you are wondering why on earth such tool would be useful
for the common folks, ie those not running a large government
surveillance system?  Well, I plan to put it in a computer on my bike
and in my car, tracking the cars nearby and allowing me to be notified
when number plates on my watch list are discovered.  Another use case
was suggested by a friend of mine, who wanted to set it up at his home
to open the car port automatically when it discovered the plate on his
car.  When I mentioned it perhaps was a bit foolhardy to allow anyone
capable of placing his license plate number of a piece of cardboard to
open his car port, men replied that it was always unlocked anyway.  I
guess for such use case it make sense.  I am sure there are other use
cases too, for those with imagination and a vision.&lt;/p&gt;

&lt;p&gt;If you want to build your own version of the Debian package, check
out the upstream git source and symlink ./distros/debian to ./debian/
before running &quot;debuild&quot; to build the source.  Or wait a bit until the
package show up in unstable.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Using appstream with isenkram to install hardware related packages in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Using_appstream_with_isenkram_to_install_hardware_related_packages_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_appstream_with_isenkram_to_install_hardware_related_packages_in_Debian.html</guid>
                <pubDate>Sun, 20 Dec 2015 12:20:00 +0100</pubDate>
                <description>&lt;p&gt;Around three years ago, I created
&lt;a href=&quot;http://packages.qa.debian.org/isenkram&quot;&gt;the isenkram
system&lt;/a&gt; to get a more practical solution in Debian for handing
hardware related packages.  A GUI system in the isenkram package will
present a pop-up dialog when some hardware dongle supported by
relevant packages in Debian is inserted into the machine.  The same
lookup mechanism to detect packages is available as command line
tools in the isenkram-cli package.  In addition to mapping hardware,
it will also map kernel firmware files to packages and make it easy to
install needed firmware packages automatically.  The key for this
system to work is a good way to map hardware to packages, in other
words, allow packages to announce what hardware they will work
with.&lt;/p&gt;

&lt;p&gt;I started by providing data files in the isenkram source, and
adding code to download the latest version of these data files at run
time, to ensure every user had the most up to date mapping available.
I also added support for storing the mapping in the Packages file in
the apt repositories, but did not push this approach because while I
was trying to figure out how to best store hardware/package mappings,
&lt;a href=&quot;http://www.freedesktop.org/software/appstream/docs/&quot;&gt;the
appstream system&lt;/a&gt; was announced.  I got in touch and suggested to
add the hardware mapping into that data set to be able to use
appstream as a data source, and this was accepted at least for the
Debian version of appstream.&lt;/p&gt;

&lt;p&gt;A few days ago using appstream in Debian for this became possible,
and today I uploaded a new version 0.20 of isenkram adding support for
appstream as a data source for mapping hardware to packages.  The only
package so far using appstream to announce its hardware support is my
pymissile package.  I got help from Matthias Klumpp with figuring out
how do add the required
&lt;a href=&quot;https://appstream.debian.org/html/sid/main/metainfo/pymissile.html&quot;&gt;metadata
in pymissile&lt;/a&gt;.  I added a file debian/pymissile.metainfo.xml with
this content:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
&amp;lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&amp;gt;
&amp;lt;component&amp;gt;
  &amp;lt;id&amp;gt;pymissile&amp;lt;/id&amp;gt;
  &amp;lt;metadata_license&amp;gt;MIT&amp;lt;/metadata_license&amp;gt;
  &amp;lt;name&amp;gt;pymissile&amp;lt;/name&amp;gt;
  &amp;lt;summary&amp;gt;Control original Striker USB Missile Launcher&amp;lt;/summary&amp;gt;
  &amp;lt;description&amp;gt;
    &amp;lt;p&amp;gt;
      Pymissile provides a curses interface to control an original
      Marks and Spencer / Striker USB Missile Launcher, as well as a
      motion control script to allow a webcamera to control the
      launcher.
    &amp;lt;/p&amp;gt;
  &amp;lt;/description&amp;gt;
  &amp;lt;provides&amp;gt;
    &amp;lt;modalias&amp;gt;usb:v1130p0202d*&amp;lt;/modalias&amp;gt;
  &amp;lt;/provides&amp;gt;
&amp;lt;/component&amp;gt;
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The key for isenkram is the component/provides/modalias value,
which is a glob style match rule for hardware specific strings
(modalias strings) provided by the Linux kernel.  In this case, it
will map to all USB devices with vendor code 1130 and product code
0202.&lt;/p&gt;

&lt;p&gt;Note, it is important that the license of all the metadata files
are compatible to have permissions to aggregate them into archive wide
appstream files.  Matthias suggested to use MIT or BSD licenses for
these files.  A challenge is figuring out a good id for the data, as
it is supposed to be globally unique and shared across distributions
(in other words, best to coordinate with upstream what to use).  But
it can be changed later or, so we went with the package name as
upstream for this project is dormant.&lt;/p&gt;

&lt;p&gt;To get the metadata file installed in the correct location for the
mirror update scripts to pick it up and include its content the
appstream data source, the file must be installed in the binary
package under /usr/share/appdata/.  I did this by adding the following
line to debian/pymissile.install:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
debian/pymissile.metainfo.xml usr/share/appdata
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;With that in place, the command line tool isenkram-lookup will list
all packages useful on the current computer automatically, and the GUI
pop-up handler will propose to install the package not already
installed if a hardware dongle is inserted into the machine in
question.&lt;/p&gt;

&lt;p&gt;Details of the modalias field in appstream is available from the 
&lt;a href=&quot;https://wiki.debian.org/DEP-11&quot;&gt;DEP-11&lt;/a&gt; proposal.&lt;/p&gt;

&lt;p&gt;To locate the modalias values of all hardware present in a machine,
try running this command on the command line:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
cat $(find /sys/devices/|grep modalias)
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;To learn more about the isenkram system, please check out
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/tags/isenkram/&quot;&gt;my
blog posts tagged isenkram&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The GNU General Public License is not magic pixie dust</title>
                <link>http://people.skolelinux.org/pere/blog/The_GNU_General_Public_License_is_not_magic_pixie_dust.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_GNU_General_Public_License_is_not_magic_pixie_dust.html</guid>
                <pubDate>Mon, 30 Nov 2015 09:55:00 +0100</pubDate>
                <description>&lt;p&gt;A blog post from my fellow Debian developer Paul Wise titled
&quot;&lt;a href=&quot;http://bonedaddy.net/pabs3/log/2015/11/27/sfc-supporter/&quot;&gt;The
GPL is not magic pixie dust&lt;/a&gt;&quot; explain the importance of making sure
the &lt;a href=&quot;http://www.gnu.org/copyleft/gpl.html&quot;&gt;GPL&lt;/a&gt; is enforced.
I quote the blog post from Paul in full here with his permission:&lt;p&gt;

&lt;blockquote&gt;

&lt;p&gt;&lt;a href=&quot;https://sfconservancy.org/supporter/&quot;&gt;&lt;img src=&quot;https://sfconservancy.org/img/supporter-badge.png&quot; width=&quot;194&quot; height=&quot;90&quot; alt=&quot;Become a Software Freedom Conservancy Supporter!&quot; align=&quot;right&quot; border=&quot;0&quot; /&gt;&lt;/a&gt;&lt;/p&gt;

&lt;blockquote&gt;
The GPL is not magic pixie dust. It does not work by itself.&lt;br/&gt;

The first step is to choose a
&lt;a href=&quot;https://copyleft.org/&quot;&gt;copyleft&lt;/a&gt; license for your
code.&lt;br/&gt;

The next step is, when someone fails to follow that copyleft license,
&lt;b&gt;it must be enforced&lt;/b&gt;&lt;br/&gt;

and its a simple fact of our modern society that such type of
work&lt;br/&gt;

is incredibly expensive to do and incredibly difficult to do.
&lt;/blockquote&gt;

&lt;p&gt;&lt;small&gt;-- &lt;a href=&quot;http://ebb.org/bkuhn/&quot;&gt;Bradley Kuhn&lt;/a&gt;, in
&lt;a href=&quot;http://faif.us/&quot; title=&quot;Free as in Freedom&quot;&gt;FaiF&lt;/a&gt;
&lt;a href=&quot;http://faif.us/cast/2015/nov/24/0x57/&quot;&gt;episode
0x57&lt;/a&gt;&lt;/small&gt;&lt;/p&gt;

&lt;p&gt;As the Debian Website
&lt;a href=&quot;https://bugs.debian.org/794116&quot;&gt;used&lt;/a&gt;
&lt;a href=&quot;https://anonscm.debian.org/viewvc/webwml/webwml/english/intro/free.wml?r1=1.24&amp;amp;r2=1.25&quot;&gt;to&lt;/a&gt;
imply, public domain and permissively licensed software can lead to
the production of more proprietary software as people discover useful
software, extend it and or incorporate it into their hardware or
software products.  Copyleft licenses such as the GNU GPL were created
to close off this avenue to the production of proprietary software but
such licenses are not enough.  With the ongoing adoption of Free
Software by individuals and groups, inevitably the community&#39;s
expectations of license compliance are violated, usually out of
ignorance of the way Free Software works, but not always.  As Karen
and Bradley explained in &lt;a href=&quot;http://faif.us/&quot; title=&quot;Free as in
Freedom&quot;&gt;FaiF&lt;/a&gt;
&lt;a href=&quot;http://faif.us/cast/2015/nov/24/0x57/&quot;&gt;episode 0x57&lt;/a&gt;,
copyleft is nothing if no-one is willing and able to stand up in court
to protect it.  The reality of today&#39;s world is that legal
representation is expensive, difficult and time consuming.  With
&lt;a href=&quot;http://gpl-violations.org/&quot;&gt;gpl-violations.org&lt;/a&gt; in hiatus
&lt;a href=&quot;http://gpl-violations.org/news/20151027-homepage-recovers/&quot;&gt;until&lt;/a&gt;
some time in 2016, the &lt;a href=&quot;https://sfconservancy.org/&quot;&gt;Software
Freedom Conservancy&lt;/a&gt; (a tax-exempt charity) is the major defender
of the Linux project, Debian and other groups against GPL violations.
In March the SFC supported a
&lt;a href=&quot;https://sfconservancy.org/news/2015/mar/05/vmware-lawsuit/&quot;&gt;lawsuit
by Christoph Hellwig&lt;/a&gt; against VMware for refusing to
&lt;a href=&quot;https://sfconservancy.org/linux-compliance/vmware-lawsuit-faq.html&quot;&gt;comply
with the GPL&lt;/a&gt; in relation to their use of parts of the Linux
kernel.  Since then two of their sponsors pulled corporate funding and
conferences
&lt;a href=&quot;https://sfconservancy.org/blog/2015/nov/24/faif-carols-fundraiser/&quot;&gt;blocked
or cancelled their talks&lt;/a&gt;.  As a result they have decided to rely
less on corporate funding and more on the broad community of
individuals who support Free Software and copyleft.  So the SFC has
&lt;a href=&quot;https://sfconservancy.org/news/2015/nov/23/2015fundraiser/&quot;&gt;launched&lt;/a&gt;
a &lt;a href=&quot;https://sfconservancy.org/supporter/&quot;&gt;campaign&lt;/a&gt; to create
a community of folks who stand up for copyleft and the GPL by
supporting their work on promoting and supporting copyleft and Free
Software.&lt;/p&gt;

&lt;p&gt;If you support Free Software,
&lt;a href=&quot;https://sfconservancy.org/blog/2015/nov/26/like-what-I-do/&quot;&gt;like&lt;/a&gt;
what the SFC do, agree with their
&lt;a href=&quot;https://sfconservancy.org/linux-compliance/principles.html&quot;&gt;compliance
principles&lt;/a&gt;, are happy about their
&lt;a href=&quot;https://sfconservancy.org/supporter/&quot;&gt;successes&lt;/a&gt; in 2015,
work on a project that is an SFC
&lt;a href=&quot;https://sfconservancy.org/members/current/&quot;&gt;member&lt;/a&gt; and or
just want to stand up for copyleft, please join
&lt;a href=&quot;https://identi.ca/cwebber/image/JQGPA4qbTyyp3-MY8QpvuA&quot;&gt;Christopher
Allan Webber&lt;/a&gt;,
&lt;a href=&quot;https://sfconservancy.org/blog/2015/nov/24/faif-carols-fundraiser/&quot;&gt;Carol
Smith&lt;/a&gt;,
&lt;a href=&quot;http://www.jonobacon.org/2015/11/25/supporting-software-freedom-conservancy/&quot;&gt;Jono
Bacon&lt;/a&gt;, myself and
&lt;a href=&quot;https://sfconservancy.org/sponsors/#supporters&quot;&gt;others&lt;/a&gt; in
becoming a
&lt;a href=&quot;https://sfconservancy.org/supporter/&quot;&gt;supporter&lt;/a&gt;.  For the
next week your donation will be
&lt;a href=&quot;https://sfconservancy.org/news/2015/nov/27/black-friday/&quot;&gt;matched&lt;/a&gt;
by an anonymous donor.  Please also consider asking your employer to
match your donation or become a sponsor of SFC.  Don&#39;t forget to
spread the word about your support for SFC via email, your blog and or
social media accounts.&lt;/p&gt;

&lt;/blockquote&gt;

&lt;p&gt;I agree with Paul on this topic and just signed up as a Supporter
of Software Freedom Conservancy myself.  Perhaps you should be a
supporter too?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>PGP key transition statement for key EE4E02F9</title>
                <link>http://people.skolelinux.org/pere/blog/PGP_key_transition_statement_for_key_EE4E02F9.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/PGP_key_transition_statement_for_key_EE4E02F9.html</guid>
                <pubDate>Tue, 17 Nov 2015 10:50:00 +0100</pubDate>
                <description>&lt;p&gt;I&#39;ve needed a new OpenPGP key for a while, but have not had time to
set it up properly.  I wanted to generate it offline and have it
available on &lt;a href=&quot;http://shop.kernelconcepts.de/#openpgp&quot;&gt;a OpenPGP
smart card&lt;/a&gt; for daily use, and learning how to do it and finding
time to sit down with an offline machine almost took forever.  But
finally I&#39;ve been able to complete the process, and have now moved
from my old GPG key to a new GPG key.  See
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/images/2015-11-17-new-gpg-key-transition.txt&quot;&gt;the
full transition statement, signed with both my old and new key&lt;/a&gt; for
the details.  This is my new key:&lt;/p&gt;

&lt;pre&gt;
pub   3936R/&lt;a href=&quot;http://pgp.cs.uu.nl/stats/111D6B29EE4E02F9.html&quot;&gt;111D6B29EE4E02F9&lt;/a&gt; 2015-11-03 [expires: 2019-11-14]
      Key fingerprint = 3AC7 B2E3 ACA5 DF87 78F1  D827 111D 6B29 EE4E 02F9
uid                  Petter Reinholdtsen &amp;lt;pere@hungry.com&amp;gt;
uid                  Petter Reinholdtsen &amp;lt;pere@debian.org&amp;gt;
sub   4096R/87BAFB0E 2015-11-03 [expires: 2019-11-02]
sub   4096R/F91E6DE9 2015-11-03 [expires: 2019-11-02]
sub   4096R/A0439BAB 2015-11-03 [expires: 2019-11-02]
&lt;/pre&gt;

&lt;p&gt;The key can be downloaded from the OpenPGP key servers, signed by
my old key.&lt;/p&gt;

&lt;p&gt;If you signed my old key
(&lt;a href=&quot;http://pgp.cs.uu.nl/stats/DB4CCC4B2A30D729.html&quot;&gt;DB4CCC4B2A30D729&lt;/a&gt;),
I&#39;d very much appreciate a signature on my new key, details and
instructions in the transition statement. I m happy to reciprocate if
you have a similarly signed transition statement to present.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Is Pentagon deciding the Norwegian negotiating position on Internet governance?</title>
                <link>http://people.skolelinux.org/pere/blog/Is_Pentagon_deciding_the_Norwegian_negotiating_position_on_Internet_governance_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Is_Pentagon_deciding_the_Norwegian_negotiating_position_on_Internet_governance_.html</guid>
                <pubDate>Tue, 3 Nov 2015 13:40:00 +0100</pubDate>
                <description>&lt;p&gt;In Norway, all government offices are required by law to keep a
list of every document or letter arriving and leaving their offices.
Internal notes should also be documented.  The document list (called a mail
journal - &quot;postjournal&quot; in Norwegian) is public information and thanks
to the Norwegian Freedom of Information Act (Offentleglova) the mail
journal is available for everyone.  Most offices even publish the mail
journal on their web pages, as PDFs or tables in web pages.  The state-level offices even have a shared web based search service (called
&lt;a href=&quot;https://www.oep.no/&quot;&gt;Offentlig Elektronisk Postjournal -
OEP&lt;/a&gt;) to make it possible to search the entries in the list.  Not
all journal entries show up on OEP, and the search service is hard to
use, but OEP does make it easier to find at least some interesting
journal entries .&lt;/p&gt;

&lt;p&gt;In 2012 I came across a document in the mail journal for the
Norwegian Ministry of Transport and Communications on OEP that
piqued my interest.  The title of the document was
&quot;&lt;a href=&quot;https://www.oep.no/search/resultSingle.html?journalPostId=4192362&quot;&gt;Internet
Governance and how it affects national security&lt;/a&gt;&quot; (Norwegian:
&quot;Internet Governance og påvirkning på nasjonal sikkerhet&quot;).  The
document date was 2012-05-22, and it was said to be sent from the
&quot;Permanent Mission of Norway to the United Nations&quot;.  I asked for a
copy, but my request was rejected with a reference to a legal clause said to authorize them to reject it
(&lt;a href=&quot;http://lovdata.no/lov/2006-05-19-16/§20&quot;&gt;offentleglova § 20,
letter c&lt;/a&gt;) and an explanation that the document was exempt because
of foreign policy interests as it contained information related to the
Norwegian negotiating position, negotiating strategies or similar.  I
was told the information in the document related to the ongoing
negotiation in the International Telecommunications Union (ITU).  The
explanation made sense to me in early January 2013, as a ITU
conference in Dubay discussing Internet Governance
(&lt;a href=&quot;https://en.wikipedia.org/wiki/International_Telecommunication_Union#World_Conference_on_International_Telecommunications_2012_.28WCIT-12.29&quot;&gt;World
Conference on International Telecommunications - WCIT-12&lt;/a&gt;) had just
ended,
&lt;a href=&quot;http://www.digi.no/kommentarer/2012/12/18/tvil-om-usas-rolle-pa-teletoppmote&quot;&gt;reportedly
in chaos&lt;/a&gt; when USA walked out of the negotiations and 25 countries
including Norway refused to sign the new treaty.  It seemed
reasonable to believe talks were still going on a few weeks later.
Norway was represented at the ITU meeting by two authorities, the
&lt;a href=&quot;http://www.nkom.no/&quot;&gt;Norwegian Communications Authority&lt;/a&gt;
and the &lt;a href=&quot;https://www.regjeringen.no/no/dep/sd/&quot;&gt;Ministry of
Transport and Communications&lt;/a&gt;.  This might be the reason the letter
was sent to the ministry.  As I was unable to find the document in the
mail journal of any Norwegian UN mission, I asked the ministry who had
sent the document to the ministry, and was told that it was the Deputy
Permanent Representative with the Permanent Mission of Norway in
Geneva.&lt;/p&gt;

&lt;p&gt;Three years later, I was still curious about the content of that
document, and again asked for a copy, believing the negotiation was
over now.  This time
&lt;a href=&quot;https://mimesbronn.no/request/kopi_av_dokumenter_i_sak_2012914&quot;&gt;I
asked both the Ministry of Transport and Communications as the
receiver&lt;/a&gt; and
&lt;a href=&quot;https://mimesbronn.no/request/brev_om_internet_governance_og_p&quot;&gt;asked
the Permanent Mission of Norway in Geneva as the sender&lt;/a&gt; for a
copy, to see if they both agreed that it should be withheld from the
public.  The ministry upheld its rejection quoting the same law
reference as before, while the permanent mission rejected it quoting a
different clause
(&lt;a href=&quot;http://lovdata.no/lov/2006-05-19-16/§20&quot;&gt;offentleglova § 20
letter b&lt;/a&gt;), claiming that they were required to keep the
content of the document from the public because it contained
information given to Norway with the expressed or implied expectation
that the information should not be made public.  I asked the permanent
mission for an explanation, and was told that the document contained
an account from a meeting held in the Pentagon for a limited group of NATO
nations where the organiser of the meeting did not intend the content
of the meeting to be publicly known.  They explained that giving me a
copy might cause Norway to not get access to similar information in
the future and thus hurt the future foreign interests of Norway.  They
also explained that the Permanent Mission of Norway in Geneva was not
the author of the document, they only got a copy of it, and because of
this had not listed it in their mail journal.&lt;/p&gt;

&lt;p&gt;Armed with this
knowledge I asked the Ministry to reconsider and asked who was the
author of the document, now realising that it was not same as the
&quot;sender&quot; according to Ministry of Transport and Communications.  The
ministry upheld its rejection but told me the name of the author of
the document.  According to
&lt;a href=&quot;https://www.regjeringen.no/no/aktuelt/unga69_rapport1/id2001204/&quot;&gt;a
government report&lt;/a&gt; the author was with the Permanent Mission of
Norway in New York a bit more than a year later (2014-09-22), so I
guessed that might be the office responsible for writing and sending
the report initially and
&lt;a href=&quot;https://www.mimesbronn.no/request/mote_2012_i_pentagon_om_itu&quot;&gt;asked
them for a copy&lt;/a&gt; but I was obviously wrong as I was told that the
document was unknown to them and that the author did not work there
when the document was written.  Next, I asked the Permanent Mission of
Norway in Geneva and the Foreign Ministry to reconsider and at least
tell me who sent the document to Deputy Permanent Representative with
the Permanent Mission of Norway in Geneva.  The Foreign Ministry also
upheld its rejection, but told me that the person sending the document
to Permanent Mission of Norway in Geneva was the defence attaché with
the Norwegian Embassy in Washington.  I do not know if this is the
same person as the author of the document.&lt;/p&gt;

&lt;p&gt;If I understand the situation correctly, someone capable of
inviting selected NATO nations to a meeting in Pentagon organised a
meeting where someone representing the Norwegian defence attaché in
Washington attended, and the account from this meeting is interpreted
by the Ministry of Transport and Communications to expose Norways
negotiating position, negotiating strategies and similar regarding the
ITU negotiations on Internet Governance.  It is truly amazing what can
be derived from mere meta-data.&lt;/p&gt;

&lt;p&gt;I wonder which NATO countries besides Norway attended this meeting?
And what exactly was said and done at the meeting?  Anyone know?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>New book, &quot;Fri kultur&quot; by @lessig, a Norwegian Bokmål translation of &quot;Free Culture&quot; from 2004</title>
                <link>http://people.skolelinux.org/pere/blog/New_book___Fri_kultur__by__lessig__a_Norwegian_Bokm_l_translation_of__Free_Culture__from_2004.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/New_book___Fri_kultur__by__lessig__a_Norwegian_Bokm_l_translation_of__Free_Culture__from_2004.html</guid>
                <pubDate>Sat, 31 Oct 2015 09:00:00 +0100</pubDate>
                <description>&lt;p&gt;People keep asking me where to get the various forms of the book I
published last week, the Norwegian Bokmål edition of Lawrence Lessigs
book &lt;a href=&quot;http://www.free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt;.  It was
published on paper via lulu.com, and is also available in PDF, ePub
and MOBI format.  I currently sell the paper edition for self cost
from lulu.com, but might extend the distribution to book stores like
Amazon and Barnes &amp; Noble later.  This will double the price and force
me to make a profit from selling the book.  Anyway, here are links to
get the book in different formats:&lt;/p&gt;

&lt;ul&gt;

  &lt;li&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22406445.html&quot;&gt;Buy 
    paper edition from lulu.com&lt;/a&gt;&lt;/li&gt;

  &lt;li&gt;&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/raw/master/archive/freeculture.nb.pdf&quot;&gt;Download
    PDF, size 7.9 MiB&lt;/a&gt; (gratis/free)&lt;/li&gt;

  &lt;li&gt;&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/raw/master/archive/freeculture.nb.epub&quot;&gt;Download
    ePub, size 11 MiB&lt;/a&gt; (gratis/free)&lt;/li&gt;

  &lt;li&gt;&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/raw/master/archive/freeculture.nb.mobi&quot;&gt;Download
    MOBI, size 3.8 MiB&lt;/a&gt; (gratis/free)&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;Note that the MOBI version have problems with the table of content,
at least with the viewers I have been able to test.  And the ePub file
have several problems according to
&lt;a href=&quot;https://github.com/IDPF/epubcheck&quot;&gt;epubcheck&lt;/a&gt;, but seem
to display fine in the viewers I have tested.  All the files needed to
create the book in various forms are available from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;the
github project page&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The project got press coverage from the Norwegian IT news site
digi.no.  Check out the article
&quot;&lt;a href=&quot;http://www.digi.no/juss_og_samfunn/2015/10/29/vil-apne-politikernes-oyne-for-creative-commons&quot;&gt;Vil
åpne politikernes øyne for Creative Commons&lt;/a&gt;&quot;.&lt;/li&gt;

&lt;p&gt;I&#39;ve &lt;a href=&quot;http://people.skolelinux.org/pere/blog/tags/freeculture&quot;&gt;blogged
about the project&lt;/a&gt; as it moved along.  The blogs document the translation
progress and insights I had along the way.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>&quot;Free Culture&quot; by @lessig - The background story for Creative Commons - new edition available</title>
                <link>http://people.skolelinux.org/pere/blog/_Free_Culture__by__lessig___The_background_story_for_Creative_Commons___new_edition_available.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/_Free_Culture__by__lessig___The_background_story_for_Creative_Commons___new_edition_available.html</guid>
                <pubDate>Fri, 23 Oct 2015 12:10:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22402863.html&quot;&gt;Click
here to buy the book&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;In 2004, as the &lt;a href=&quot;https://creativecommons.org/&quot;&gt;Creative Commons
movement&lt;/a&gt; gained momentum, its creator Lawrence Lessig wrote the
book &lt;a href=&quot;https://en.wikipedia.org/wiki/Free_Culture_(book)&quot;&gt;Free
Culture&lt;/a&gt; to explain the problems with increasing copyright
regulation and suggest some solutions.  I read the book back then and
was very moved by it.  Reading the book inspired me and changed the
way I looked on copyright law, and I would love it if more people
would read it too.&lt;/p&gt;

&lt;p&gt;Because of this, I decided in the summer of 2012 to translate it to
Norwegian Bokmål and publish it for those of my friends and family
that prefer to read books in Norwegian.  I translated the book using
docbook and a gettext PO file, and a byproduct of this process is a
new edition of the English original.  I&#39;ve been in touch with the
author during by work, and he said it was fine with him if I also
published an English version.  So I decided to do so.  Today, I made
this edition
&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22402863.html&quot;&gt;available
for sale on Lulu.com&lt;/a&gt;, for those interested in a paper book.  This
is the cover:

&lt;p align=&quot;center&quot;&gt;&lt;a href=&quot;http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22402863.html&quot;&gt;&lt;img align=&quot;center&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2015-10-23-free-culture-english-published-cover.png&quot;/&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The Norwegian Bokmål version will be available for purchase in a
few days.  I also plan to publish a French version in a few weeks or
months, depending on the amount of people with knowledge of French to
join the translation project.  So far there is only one active
person, but the French book is almost completely translated but
need some proof reading.&lt;/p&gt;

&lt;p&gt;The book is also available in PDF, ePub and MOBI formats from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;my
github project page&lt;/a&gt;.  Note the ePub and MOBI versions have some
formatting problems I believe is due to bugs in the docbook tool
dbtoepub (Debian BTS issues
&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=795842&quot;&gt;#795842&lt;/a&gt;
and
&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=796871&quot;&gt;#796871&lt;/a&gt;),
but I have not taken the time to investigate.  I recommend the PDF and
ePub version for now, as they seem to show up fine in the viewers I
have available.&lt;/p&gt;

&lt;p&gt;After the translation to Norwegian Bokmål was complete, I was able
to secure some sponsoring from
&lt;a href=&quot;http://www.nuugfoundation.no/&quot;&gt;the NUUG Foundation&lt;/a&gt; to
print the book.  This is the reason their logo is located on the back
cover. I am very grateful for their contribution, and will use it to
give a copy of the Norwegian edition to members of the Norwegian
Parliament and other decision makers here in Norway.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Lawrence Lessig interviewed Edward Snowden a year ago</title>
                <link>http://people.skolelinux.org/pere/blog/Lawrence_Lessig_interviewed_Edward_Snowden_a_year_ago.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lawrence_Lessig_interviewed_Edward_Snowden_a_year_ago.html</guid>
                <pubDate>Mon, 19 Oct 2015 11:50:00 +0200</pubDate>
                <description>&lt;p&gt;Last year, &lt;a href=&quot;https://lessig2016.us/&quot;&gt;US president candidate
in the Democratic Party&lt;/a&gt; Lawrence interviewed Edward Snowden.  The
one hour interview was
&lt;a href=&quot;https://www.youtube.com/watch?v=o_Sr96TFQQE&quot;&gt;published by
Harvard Law School 2014-10-23 on Youtube&lt;/a&gt;, and the meeting took
place 2014-10-20.&lt;/p&gt;

&lt;p&gt;The questions are very good, and there is lots of useful
information to be learned and very interesting issues to think about
being raised.  Please check it out.&lt;/p&gt;

&lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/o_Sr96TFQQE&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;

&lt;p&gt;I find it especially interesting to hear again that Snowden did try
to bring up his reservations through the official channels without any
luck.  It is in sharp contrast to the answers made 2013-11-06 by the
Norwegian prime minister Erna Solberg to the Norwegian Parliament,
&lt;a href=&quot;https://tale.holderdeord.no/speeches/s131106/68&quot;&gt;claiming
Snowden is no Whistle-Blower&lt;/a&gt; because he should have taken up his
concerns internally and using official channels.  It make me sad
that this is the political leadership we have here in Norway.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The Story of Aaron Swartz - Let us all weep!</title>
                <link>http://people.skolelinux.org/pere/blog/The_Story_of_Aaron_Swartz___Let_us_all_weep_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_Story_of_Aaron_Swartz___Let_us_all_weep_.html</guid>
                <pubDate>Thu, 8 Oct 2015 12:10:00 +0200</pubDate>
                <description>&lt;p&gt;The movie &quot;&lt;a href=&quot;http://www.takepart.com/internets-own-boy&quot;&gt;The
Internet&#39;s Own Boy: The Story of Aaron Swartz&lt;/a&gt;&quot; is both inspiring
and depressing at the same time.  The work of Aaron Swartz has
inspired me in my work, and I am grateful of all the improvements he
was able to initiate or complete.  I wish I am able to do as much good
in my life as he did in his.  Every minute of this 1:45 long movie is
inspiring in documenting how much impact a single person can have on
improving the society and this world.  And it is depressing in
documenting how the law enforcement of USA (and other countries) is
corrupted to a point where they can push a bright kid to his death for
downloading too many scientific articles.  Aaron is dead.  Let us all
weep.&lt;/p&gt;

&lt;p&gt;The movie is also available on
&lt;a href=&quot;https://www.youtube.com/watch?v=vXr-2hwTk58&quot;&gt;Youtube&lt;/a&gt;.  I
wish there were Norwegian subtitles available, so I could show it to
my parents.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>French Docbook/PDF/EPUB/MOBI edition of the Free Culture book</title>
                <link>http://people.skolelinux.org/pere/blog/French_Docbook_PDF_EPUB_MOBI_edition_of_the_Free_Culture_book.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/French_Docbook_PDF_EPUB_MOBI_edition_of_the_Free_Culture_book.html</guid>
                <pubDate>Thu, 1 Oct 2015 13:20:00 +0200</pubDate>
                <description>&lt;p&gt;As I wrap up the Norwegian version of
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;Free
Culture&lt;/a&gt; book by Lawrence Lessig (still waiting for my final proof
reading copy to arrive in the mail), my great
&lt;a href=&quot;http://dblatex.sourceforge.net/&quot;&gt;dblatex&lt;/a&gt; helper and
developer of the dblatex docbook processor, Benoît Guillon, decided a
to try to create a French version of the book.  He started with the
French translation available from the
&lt;a href=&quot;http://www.wikilivres.ca/wiki/Culture_libre&quot;&gt;Wikilivres wiki
pages&lt;/a&gt;, and wrote a program to convert it into a PO file, allowing
the translation to be integrated into the po4a based framework I use
to create the Norwegian translation from the English edition.  We meet
on the &lt;a href=&quot;irc://irc.freenode.net/%23dblatex&quot;&gt;#dblatex IRC
channel&lt;/a&gt; to discuss the work.  If you want to help create a French
edition, check out
&lt;a href=&quot;https://github.com/marsgui/free-culture-lessig&quot;&gt;his git
repository&lt;/a&gt; and join us on IRC.  If the French edition look good,
we might publish it as a paper book on lulu.com.  A French version of
the drawings and the cover need to be provided for this to happen.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The life and death of a laptop battery</title>
                <link>http://people.skolelinux.org/pere/blog/The_life_and_death_of_a_laptop_battery.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_life_and_death_of_a_laptop_battery.html</guid>
                <pubDate>Thu, 24 Sep 2015 16:00:00 +0200</pubDate>
                <description>&lt;p&gt;When I get a new laptop, the battery life time at the start is OK.
But this do not last.  The last few laptops gave me a feeling that
within a year, the life time is just a fraction of what it used to be,
and it slowly become painful to use the laptop without power connected
all the time.  Because of this, when I got a new Thinkpad X230 laptop
about two years ago, I decided to monitor its battery state to have
more hard facts when the battery started to fail.&lt;/p&gt;

&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2015-09-24-laptop-battery-graph.png&quot;/&gt;

&lt;p&gt;First I tried to find a sensible Debian package to record the
battery status, assuming that this must be a problem already handled
by someone else.  I found
&lt;a href=&quot;https://tracker.debian.org/pkg/battery-stats&quot;&gt;battery-stats&lt;/a&gt;,
which collects statistics from the battery, but it was completely
broken.  I sent a few suggestions to the maintainer, but decided to
write my own collector as a shell script while I waited for feedback
from him.  Via
&lt;a href=&quot;http://www.ifweassume.com/2013/08/the-de-evolution-of-my-laptop-battery.html&quot;&gt;a
blog post about the battery development on a MacBook Air&lt;/a&gt; I also
discovered
&lt;a href=&quot;https://github.com/jradavenport/batlog.git&quot;&gt;batlog&lt;/a&gt;, not
available in Debian.&lt;/p&gt;

&lt;p&gt;I started my collector 2013-07-15, and it has been collecting
battery stats ever since. Now my
/var/log/hjemmenett-battery-status.log file contain around 115,000
measurements, from the time the battery was working great until now,
when it is unable to charge above 7% of original capacity.  My
collector shell script is quite simple and look like this:&lt;/p&gt;

&lt;pre&gt;
#!/bin/sh
# Inspired by
# http://www.ifweassume.com/2013/08/the-de-evolution-of-my-laptop-battery.html
# See also
# http://blog.sleeplessbeastie.eu/2013/01/02/debian-how-to-monitor-battery-capacity/
logfile=/var/log/hjemmenett-battery-status.log

files=&quot;manufacturer model_name technology serial_number \
    energy_full energy_full_design energy_now cycle_count status&quot;

if [ ! -e &quot;$logfile&quot; ] ; then
    (
        printf &quot;timestamp,&quot;
        for f in $files; do
            printf &quot;%s,&quot; $f
        done
        echo
    ) &gt; &quot;$logfile&quot;
fi

log_battery() {
    # Print complete message in one echo call, to avoid race condition
    # when several log processes run in parallel.
    msg=$(printf &quot;%s,&quot; $(date +%s); \
        for f in $files; do \
            printf &quot;%s,&quot; $(cat $f); \
        done)
    echo &quot;$msg&quot;
}

cd /sys/class/power_supply

for bat in BAT*; do
    (cd $bat &amp;&amp; log_battery &gt;&gt; &quot;$logfile&quot;)
done
&lt;/pre&gt;

&lt;p&gt;The script is called when the power management system detect a
change in the power status (power plug in or out), and when going into
and out of hibernation and suspend.  In addition, it collect a value
every 10 minutes.  This make it possible for me know when the battery
is discharging, charging and how the maximum charge change over time.
The code for the Debian package
&lt;a href=&quot;https://github.com/petterreinholdtsen/battery-status&quot;&gt;is now
available on github&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The collected log file look like this:&lt;/p&gt;

&lt;pre&gt;
timestamp,manufacturer,model_name,technology,serial_number,energy_full,energy_full_design,energy_now,cycle_count,status,
1376591133,LGC,45N1025,Li-ion,974,62800000,62160000,39050000,0,Discharging,
[...]
1443090528,LGC,45N1025,Li-ion,974,4900000,62160000,4900000,0,Full,
1443090601,LGC,45N1025,Li-ion,974,4900000,62160000,4900000,0,Full,
&lt;/pre&gt;

&lt;p&gt;I wrote a small script to create a graph of the charge development
over time.  This graph depicted above show the slow death of my laptop
battery.&lt;/p&gt;

&lt;p&gt;But why is this happening?  Why are my laptop batteries always
dying in a year or two, while the batteries of space probes and
satellites keep working year after year.  If we are to believe
&lt;a href=&quot;http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries&quot;&gt;Battery
University&lt;/a&gt;, the cause is me charging the battery whenever I have a
chance, and the fix is to not charge the Lithium-ion batteries to 100%
all the time, but to stay below 90% of full charge most of the time.
I&#39;ve been told that the Tesla electric cars
&lt;a href=&quot;http://my.teslamotors.com/de_CH/forum/forums/battery-charge-limit&quot;&gt;limit
the charge of their batteries to 80%&lt;/a&gt;, with the option to charge to
100% when preparing for a longer trip (not that I would want a car
like Tesla where rights to privacy is abandoned, but that is another
story), which I guess is the option we should have for laptops on
Linux too.&lt;/p&gt;

&lt;p&gt;Is there a good and generic way with Linux to tell the battery to
stop charging at 80%, unless requested to charge to 100% once in
preparation for a longer trip?  I found
&lt;a href=&quot;http://askubuntu.com/questions/34452/how-can-i-limit-battery-charging-to-80-capacity&quot;&gt;one
recipe on askubuntu for Ubuntu to limit charging on Thinkpad to
80%&lt;/a&gt;, but could not get it to work (kernel module refused to
load).&lt;/p&gt;

&lt;p&gt;I wonder why the battery capacity was reported to be more than 100%
at the start.  I also wonder why the &quot;full capacity&quot; increases some
times, and if it is possible to repeat the process to get the battery
back to design capacity.  And I wonder if the discharge and charge
speed change over time, or if this stay the same.  I did not yet try
to write a tool to calculate the derivative values of the battery
level, but suspect some interesting insights might be learned from
those.&lt;/p&gt;

&lt;p&gt;Update 2015-09-24: I got a tip to install the packages
acpi-call-dkms and tlp (unfortunately missing in Debian stable)
packages instead of the tp-smapi-dkms package I had tried to use
initially, and use &#39;tlp setcharge 40 80&#39; to change when charging start
and stop.  I&#39;ve done so now, but expect my existing battery is toast
and need to be replaced.  The proposal is unfortunately Thinkpad
specific.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Book cover for the Free Culture book finally done</title>
                <link>http://people.skolelinux.org/pere/blog/Book_cover_for_the_Free_Culture_book_finally_done.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Book_cover_for_the_Free_Culture_book_finally_done.html</guid>
                <pubDate>Thu, 3 Sep 2015 21:00:00 +0200</pubDate>
                <description>&lt;p&gt;Creating a good looking book cover proved harder than I expected.
I wanted to create a cover looking similar to the original cover of
the
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;Free
Culture&lt;/a&gt; book we are translating to Norwegian, and I wanted it in
vector format for high resolution printing.  But my inkscape knowledge
were not nearly good enough to pull that off.

&lt;p&gt;But thanks to the great inkscape community, I was able to wrap up
the cover yesterday evening.  I asked on the
&lt;a href=&quot;irc://irc.freenode.net/%23inkscape&quot;&gt;#inkscape IRC channel&lt;/a&gt;
on Freenode for help and clues, and Marc Jeanmougin (Mc-) volunteered
to try to recreate it based on the PDF of the cover from the HTML
version.  Not only did he create a
&lt;a href=&quot;https://marc.jeanmougin.fr/share/copy1.svg &quot;&gt;SVG document with
the original and his vector version side by side&lt;/a&gt;, he even provided
an &lt;a href=&quot;https://marc.jeanmougin.fr/share/out-1.ogv&quot;&gt;instruction
video&lt;/a&gt; explaining how he did it&lt;/a&gt;.  But the instruction video is
not easy to follow for an untrained inkscape user. The video is a
recording on how he did it, and he is obviously very experienced as
the menu selections are very quick and he mentioned on IRC that he did
use some keyboard shortcuts that can&#39;t be seen on the video, but it
give a good idea about the inkscape operations to use to create the
stripes with the embossed copyright sign in the center.&lt;/p&gt;

&lt;p&gt;I took his SVG file, copied the vector image and re-sized it to fit
on the cover I was drawing.  I am happy with the end result, and the
current english version look like this:&lt;/p&gt;

&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2015-09-03-free-culture-cover.png&quot; width=&quot;70%&quot; align=&quot;center&quot;/&gt;

&lt;p&gt;I am not quite sure about the text on the back, but guess it will
do.  I picked three quotes from the official site for the book, and
hope it will work to trigger the interest of potential readers.  The
Norwegian cover will look the same, but with the texts and bar code
replaced with the Norwegian version.&lt;/p&gt;

&lt;p&gt;The book is very close to being ready for publication, and I expect
to upload the final draft to Lulu in the next few days and order a
final proof reading copy to verify that everything look like it should
before allowing everyone to order their own copy of Free Culture, in
English or Norwegian Bokmål.  I&#39;m waiting to give the the productive
proof readers a chance to complete their work.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>In my hand, a pocket book edition of the Norwegian Free Culture book!</title>
                <link>http://people.skolelinux.org/pere/blog/In_my_hand__a_pocket_book_edition_of_the_Norwegian_Free_Culture_book_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/In_my_hand__a_pocket_book_edition_of_the_Norwegian_Free_Culture_book_.html</guid>
                <pubDate>Wed, 19 Aug 2015 22:10:00 +0200</pubDate>
                <description>&lt;p&gt;Today, finally, my first printed draft edition of the Norwegian
translation of Free Culture I have been working on for the last few
years arrived in the mail.  I had to fake a cover to get the interior
printed, and the exterior of the book look awful, but that is
irrelevant at this point.  I asked for a printed pocket book version
to get an idea about the font sizes and paper format as well as how
good the figures and images look in print, but also to test what the
pocket book version would look like.  After receiving the 500 page
pocket book, it became obvious to me that that pocket book size is too
small for this book.  I believe the book is too thick, and several
tables and figures do not look good in the size they get with that
small page sizes.  I believe I will go with the 5.5x8.5 inch size
instead.  A surprise discovery from the paper version was how bad the
URLs look in print.  They are very hard to read in the colophon page.
The URLs are red in the PDF, but light gray on paper.  I need to
change the color of links somehow to look better.  But there is a
printed book in my hand, and it feels great. :)&lt;/p&gt;

&lt;p&gt;Now I only need to fix the cover, wrap up the postscript with the
store behind the book, and collect the last corrections from the proof
readers before the book is ready for proper printing.  Cover artists
willing to work for free and create a Creative Commons licensed vector
file looking similar to the original is most welcome, as my skills as
a graphics designer are mostly missing.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First paper version of the Norwegian Free Culture book heading my way</title>
                <link>http://people.skolelinux.org/pere/blog/First_paper_version_of_the_Norwegian_Free_Culture_book_heading_my_way.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_paper_version_of_the_Norwegian_Free_Culture_book_heading_my_way.html</guid>
                <pubDate>Sun, 9 Aug 2015 10:15:00 +0200</pubDate>
                <description>&lt;p&gt;Typesetting a book is harder than I hoped.  As the translation is
mostly done, and a volunteer proof reader was going to check the text
on paper, it was time this summer to focus on formatting my translated
&lt;a href=&quot;http://www.docbook.org/&quot;&gt;docbook&lt;/a&gt; based version of the
&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt; book by Lawrence
Lessig.  I&#39;ve been trying to get both docboox-xsl+fop and dblatex to
give me a good looking PDF, but in the end I went with dblatex, because
its Debian maintainer and upstream developer were responsive and very
helpful in solving my formatting challenges.&lt;/p&gt;

&lt;p&gt;Last night, I finally managed to create a PDF that no longer made
&lt;a href=&quot;http://www.lulu.com/&quot;&gt;Lulu.com&lt;/a&gt; complain after uploading,
and I ordered a text version of the book on paper.  It is lacking a
proper book cover and is not tagged with the correct ISBN number, but
should give me an idea what the finished book will look like.&lt;/p&gt;

&lt;p&gt;Instead of using Lulu, I did consider printing the book using
&lt;a href=&quot;http://www.createspace.com/&quot;&gt;CreateSpace&lt;/a&gt;, but ended up
using Lulu because it had smaller book size options (CreateSpace seem
to lack pocket book with extended distribution).  I looked for a
similar service in Norway, but have not seen anything so far.  Please
let me know if I am missing out on something here.&lt;/p&gt;

&lt;p&gt;But I still struggle to decide the book size.  Should I go for
pocket book (4.25x6.875 inches / 10.8x17.5 cm) with 556 pages, Digest
(5.5x8.5 inches / 14x21.6 cm) with 323 pages or US Trade (6x8 inches /
15.3x22.9 cm) with 280 pages?  Fewer pager give a cheaper book, and a
smaller book is easier to carry around.  The test book I ordered was
pocket book sized, to give me an idea how well that fit in my hand,
but I suspect I will end up using a digest sized book in the end to
bring the prize down further.&lt;/p&gt;

&lt;p&gt;My biggest challenge at the moment is making nice cover art.  My
inkscape skills are not yet up to the task of replicating the original
cover in SVG format.  I also need to figure out what to write about
the book on the back (will most likely use the same text as the
description on web based book stores).  I would love help with this,
if you are willing to license the art source and final version using
the same CC license as the book.  My artistic skills are not really up
to the task.&lt;/p&gt;

&lt;p&gt;I plan to publish the book in both English and Norwegian and on
paper, in PDF form as well as EPUB and MOBI format.  The current
status can as usual be found on
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;
in the archive/ directory.  So far I have spent all time on making the
PDF version look good.  Someone should probably do the same with the
dbtoepub generated e-book.  Help is definitely needed here, as I
expect to run out of steem before I find time to improve the epub
formatting.&lt;/p&gt;

&lt;p&gt;Please let me know via github if you find typos in the book or
discover translations that should be improved.  The final proof
reading is being done right now, and I expect to publish the finished
result in a few months.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Typesetting DocBook footnotes as endnotes with dblatex</title>
                <link>http://people.skolelinux.org/pere/blog/Typesetting_DocBook_footnotes_as_endnotes_with_dblatex.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Typesetting_DocBook_footnotes_as_endnotes_with_dblatex.html</guid>
                <pubDate>Thu, 16 Jul 2015 18:10:00 +0200</pubDate>
                <description>&lt;p&gt;I&#39;m still working on the Norwegian version of the
&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture book by Lawrence
Lessig&lt;/a&gt;, and is now working on the final typesetting and layout.
One of the features I want to get the structure similar to the
original book is to typeset the footnotes as endnotes in the notes
chapter.  Based on the
&lt;a href=&quot;https://bugs.debian.org/685063&quot;&gt;feedback from the Debian
maintainer and the dblatex developer&lt;/a&gt;, I came up with this recipe I
would like to share with you.  The proposal was to create a new LaTeX
class file and add the LaTeX code there, but this is not always
practical, when I want to be able to replace the class using a make
file variable.  So my proposal misuses the latex.begindocument XSL
parameter value, to get a small fragment into the correct location in
the generated LaTeX File.&lt;/p&gt;

&lt;p&gt;First, decide where in the DocBook document to place the endnotes,
and add this text there:&lt;/p&gt;

&lt;pre&gt;
&amp;lt;?latex \theendnotes ?&amp;gt;
&lt;/pre&gt;

&lt;p&gt;Next, create a xsl stylesheet file dblatex-endnotes.xsl to add the
code needed to add the endnote instructions in the preamble of the
generated LaTeX document, with content like this:&lt;/p&gt;

&lt;pre&gt;
&amp;lt;?xml version=&#39;1.0&#39;?&amp;gt;
&amp;lt;xsl:stylesheet xmlns:xsl=&quot;http://www.w3.org/1999/XSL/Transform&quot; version=&#39;1.0&#39;&amp;gt;
  &amp;lt;xsl:param name=&quot;latex.begindocument&quot;&amp;gt;
    &amp;lt;xsl:text&amp;gt;
\usepackage{endnotes}
\let\footnote=\endnote
\def\enoteheading{\mbox{}\par\vskip-\baselineskip }
\begin{document}
    &amp;lt;/xsl:text&amp;gt;
  &amp;lt;/xsl:param&amp;gt;
&amp;lt;/xsl:stylesheet&amp;gt;
&lt;/pre&gt;

&lt;p&gt;Finally, load this xsl file when running dblatex, for example like
this:&lt;/p&gt;

&lt;pre&gt;
dblatex --xsl-user=dblatex-endnotes.xsl freeculture.nb.xml
&lt;/pre&gt;

&lt;p&gt;The end result can be seen on github, where
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;my
book project&lt;/a&gt; is located.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>MPEG LA on &quot;Internet Broadcast AVC Video&quot; licensing and non-private use</title>
                <link>http://people.skolelinux.org/pere/blog/MPEG_LA_on__Internet_Broadcast_AVC_Video__licensing_and_non_private_use.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/MPEG_LA_on__Internet_Broadcast_AVC_Video__licensing_and_non_private_use.html</guid>
                <pubDate>Tue, 7 Jul 2015 09:50:00 +0200</pubDate>
                <description>&lt;p&gt;After asking the Norwegian Broadcasting Company (NRK)
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Hva_gj_r_at_NRK_kan_distribuere_H_264_video_uten_patentavtale_med_MPEG_LA_.html&quot;&gt;why
they can broadcast and stream H.264 video without an agreement with
the MPEG LA&lt;/a&gt;, I was wiser, but still confused.  So I asked MPEG LA
if their understanding matched that of NRK.  As far as I can tell, it
does not.&lt;/p&gt;

&lt;p&gt;I started by asking for more information about the various
licensing classes and what exactly is covered by the &quot;Internet
Broadcast AVC Video&quot; class that NRK pointed me at to explain why NRK
did not need a license for streaming H.264 video:

&lt;p&gt;&lt;blockquote&gt;

&lt;p&gt;According to
&lt;a href=&quot;http://www.mpegla.com/Lists/MPEG%20LA%20News%20List/Attachments/226/n-10-02-02.pdf&quot;&gt;a
MPEG LA press release dated 2010-02-02&lt;/a&gt;, there is no charge when
using MPEG AVC/H.264 according to the terms of &quot;Internet Broadcast AVC
Video&quot;.  I am trying to understand exactly what the terms of &quot;Internet
Broadcast AVC Video&quot; is, and wondered if you could help me.  What
exactly is covered by these terms, and what is not?&lt;/p&gt;

&lt;p&gt;The only source of more information I have been able to find is a
PDF named
&lt;a href=&quot;http://www.mpegla.com/main/programs/avc/Documents/avcweb.pdf&quot;&gt;AVC
Patent Portfolio License Briefing&lt;/a&gt;, which states this about the
fees:&lt;/p&gt;

&lt;ul&gt;
 &lt;li&gt;Where End User pays for AVC Video
  &lt;ul&gt;
   &lt;li&gt;Subscription (not limited by title) – 100,000 or fewer
     subscribers/yr = no royalty; &amp;gt; 100,000 to 250,000 subscribers/yr =
     $25,000; &amp;gt;250,000 to 500,000 subscribers/yr = $50,000; &amp;gt;500,000 to
     1M subscribers/yr = $75,000; &amp;gt;1M subscribers/yr = $100,000&lt;/li&gt;

   &lt;li&gt;Title-by-Title - 12 minutes or less = no royalty; &amp;gt;12 minutes in
     length = lower of (a) 2% or (b) $0.02 per title&lt;/li&gt;
  &lt;/ul&gt;&lt;/li&gt;

 &lt;li&gt;Where remuneration is from other sources
  &lt;ul&gt;
   &lt;li&gt;Free Television - (a) one-time $2,500 per transmission encoder or
     (b) annual fee starting at $2,500 for &amp;gt; 100,000 HH rising to
     maximum $10,000 for &amp;gt;1,000,000 HH&lt;/li&gt;

   &lt;li&gt;Internet Broadcast AVC Video (not title-by-title, not subscription)
     – no royalty for life of the AVC Patent Portfolio License&lt;/li&gt;
  &lt;/ul&gt;&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;Am I correct in assuming that the four categories listed is the
categories used when selecting licensing terms, and that &quot;Internet
Broadcast AVC Video&quot; is the category for things that do not fall into
one of the other three categories?  Can you point me to a good source
explaining what is ment by &quot;title-by-title&quot; and &quot;Free Television&quot; in
the license terms for AVC/H.264?&lt;/p&gt;

&lt;p&gt;Will a web service providing H.264 encoded video content in a
&quot;video on demand&quot; fashing similar to Youtube and Vimeo, where no
subscription is required and no payment is required from end users to
get access to the videos, fall under the terms of the &quot;Internet
Broadcast AVC Video&quot;, ie no royalty for life of the AVC Patent
Portfolio license?  Does it matter if some users are subscribed to get
access to personalized services?&lt;/p&gt;

&lt;p&gt;Note, this request and all answers will be published on the
Internet.&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The answer came quickly from Benjamin J. Myers, Licensing Associate
with the MPEG LA:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
&lt;p&gt;Thank you for your message and for your interest in MPEG LA.  We
appreciate hearing from you and I will be happy to assist you.&lt;/p&gt;

&lt;p&gt;As you are aware, MPEG LA offers our AVC Patent Portfolio License
which provides coverage under patents that are essential for use of
the AVC/H.264 Standard (MPEG-4 Part 10).  Specifically, coverage is
provided for end products and video content that make use of AVC/H.264
technology.  Accordingly, the party offering such end products and
video to End Users concludes the AVC License and is responsible for
paying the applicable royalties.&lt;/p&gt;

&lt;p&gt;Regarding Internet Broadcast AVC Video, the AVC License generally
defines such content to be video that is distributed to End Users over
the Internet free-of-charge.  Therefore, if a party offers a service
which allows users to upload AVC/H.264 video to its website, and such
AVC Video is delivered to End Users for free, then such video would
receive coverage under the sublicense for Internet Broadcast AVC
Video, which is not subject to any royalties for the life of the AVC
License.  This would also apply in the scenario where a user creates a
free online account in order to receive a customized offering of free
AVC Video content.  In other words, as long as the End User is given
access to or views AVC Video content at no cost to the End User, then
no royalties would be payable under our AVC License.&lt;/p&gt;

&lt;p&gt;On the other hand, if End Users pay for access to AVC Video for a
specific period of time (e.g., one month, one year, etc.), then such
video would constitute Subscription AVC Video.  In cases where AVC
Video is delivered to End Users on a pay-per-view basis, then such
content would constitute Title-by-Title AVC Video.  If a party offers
Subscription or Title-by-Title AVC Video to End Users, then they would
be responsible for paying the applicable royalties you noted below.&lt;/p&gt;

&lt;p&gt;Finally, in the case where AVC Video is distributed for free
through an &quot;over-the-air, satellite and/or cable transmission&quot;, then
such content would constitute Free Television AVC Video and would be
subject to the applicable royalties.&lt;/p&gt;

&lt;p&gt;For your reference, I have attached
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/images/2015-07-07-mpegla.pdf&quot;&gt;a
.pdf copy of the AVC License&lt;/a&gt;. You will find the relevant
sublicense information regarding AVC Video in Sections 2.2 through
2.5, and the corresponding royalties in Section 3.1.2 through 3.1.4.
You will also find the definitions of Title-by-Title AVC Video,
Subscription AVC Video, Free Television AVC Video, and Internet
Broadcast AVC Video in Section 1 of the License.  Please note that the
electronic copy is provided for informational purposes only and cannot
be used for execution.&lt;/p&gt;

&lt;p&gt;I hope the above information is helpful.  If you have additional
questions or need further assistance with the AVC License, please feel
free to contact me directly.&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Having a fresh copy of the license text was useful, and knowing
that the definition of Title-by-Title required payment per title made
me aware that my earlier understanding of that phrase had been wrong.
But I still had a few questions:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
&lt;p&gt;I have a small followup question.  Would it be possible for me to get
a license with MPEG LA even if there are no royalties to be paid?  The
reason I ask, is that some video related products have a copyright
clause limiting their use without a license with MPEG LA.  The clauses
typically look similar to this:

&lt;p&gt;&lt;blockquote&gt;
  This product is licensed under the AVC patent portfolio license for
  the personal and non-commercial use of a consumer to (a) encode
  video in compliance with the AVC standard (&quot;AVC video&quot;) and/or (b)
  decode AVC video that was encoded by a consumer engaged in a
  personal and non-commercial activity and/or AVC video that was
  obtained from a video provider licensed to provide AVC video. No
  license is granted or shall be implied for any other use. additional
  information may be obtained from MPEG LA L.L.C.
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;It is unclear to me if this clause mean that I need to enter into
an agreement with MPEG LA to use the product in question, even if
there are no royalties to be paid to MPEG LA.  I suspect it will
differ depending on the jurisdiction, and mine is Norway.  What is
MPEG LAs view on this?&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;According to the answer, MPEG LA believe those using such tools for
non-personal or commercial use need a license with them:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;

&lt;p&gt;With regard to the Notice to Customers, I would like to begin by
clarifying that the Notice from Section 7.1 of the AVC License
reads:&lt;/p&gt;

&lt;p&gt;THIS PRODUCT IS LICENSED UNDER THE AVC PATENT PORTFOLIO LICENSE FOR
THE PERSONAL USE OF A CONSUMER OR OTHER USES IN WHICH IT DOES NOT
RECEIVE REMUNERATION TO (i) ENCODE VIDEO IN COMPLIANCE WITH THE AVC
STANDARD (&quot;AVC VIDEO&quot;) AND/OR (ii) DECODE AVC VIDEO THAT WAS ENCODED
BY A CONSUMER ENGAGED IN A PERSONAL ACTIVITY AND/OR WAS OBTAINED FROM
A VIDEO PROVIDER LICENSED TO PROVIDE AVC VIDEO. NO LICENSE IS GRANTED
OR SHALL BE IMPLIED FOR ANY OTHER USE. ADDITIONAL INFORMATION MAY BE
OBTAINED FROM MPEG LA, L.L.C. SEE HTTP://WWW.MPEGLA.COM&lt;/p&gt;

&lt;p&gt;The Notice to Customers is intended to inform End Users of the
personal usage rights (for example, to watch video content) included
with the product they purchased, and to encourage any party using the
product for commercial purposes to contact MPEG LA in order to become
licensed for such use (for example, when they use an AVC Product to
deliver Title-by-Title, Subscription, Free Television or Internet
Broadcast AVC Video to End Users, or to re-Sell a third party&#39;s AVC
Product as their own branded AVC Product).&lt;/p&gt;

&lt;p&gt;Therefore, if a party is to be licensed for its use of an AVC
Product to Sell AVC Video on a Title-by-Title, Subscription, Free
Television or Internet Broadcast basis, that party would need to
conclude the AVC License, even in the case where no royalties were
payable under the License.  On the other hand, if that party (either a
Consumer or business customer) simply uses an AVC Product for their
own internal purposes and not for the commercial purposes referenced
above, then such use would be included in the royalty paid for the AVC
Products by the licensed supplier.&lt;/p&gt;

&lt;p&gt;Finally, I note that our AVC License provides worldwide coverage in
countries that have AVC Patent Portfolio Patents, including
Norway.&lt;/p&gt;

&lt;p&gt;I hope this clarification is helpful.  If I may be of any further
assistance, just let me know.&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The mentioning of Norwegian patents made me a bit confused, so I
asked for more information:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;

&lt;p&gt;But one minor question at the end.  If I understand you correctly,
you state in the quote above that there are patents in the AVC Patent
Portfolio that are valid in Norway.  This make me believe I read the
list available from &amp;lt;URL:
&lt;a href=&quot;http://www.mpegla.com/main/programs/AVC/Pages/PatentList.aspx&quot;&gt;http://www.mpegla.com/main/programs/AVC/Pages/PatentList.aspx&lt;/a&gt;
&amp;gt; incorrectly, as I believed the &quot;NO&quot; prefix in front of patents
were Norwegian patents, and the only one I could find under Mitsubishi
Electric Corporation expired in 2012.  Which patents are you referring
to that are relevant for Norway?&lt;/p&gt;

&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Again, the quick answer explained how to read the list of patents
in that list:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;

&lt;p&gt;Your understanding is correct that the last AVC Patent Portfolio
Patent in Norway expired on 21 October 2012.  Therefore, where AVC
Video is both made and Sold in Norway after that date, then no
royalties would be payable for such AVC Video under the AVC License.
With that said, our AVC License provides historic coverage for AVC
Products and AVC Video that may have been manufactured or Sold before
the last Norwegian AVC patent expired.  I would also like to clarify
that coverage is provided for the country of manufacture and the
country of Sale that has active AVC Patent Portfolio Patents.&lt;/p&gt;

&lt;p&gt;Therefore, if a party offers AVC Products or AVC Video for Sale in
a country with active AVC Patent Portfolio Patents (for example,
Sweden, Denmark, Finland, etc.), then that party would still need
coverage under the AVC License even if such products or video are
initially made in a country without active AVC Patent Portfolio
Patents (for example, Norway).  Similarly, a party would need to
conclude the AVC License if they make AVC Products or AVC Video in a
country with active AVC Patent Portfolio Patents, but eventually Sell
such AVC Products or AVC Video in a country without active AVC Patent
Portfolio Patents.&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;As far as I understand it, MPEG LA believe anyone using Adobe
Premiere and other video related software with a H.264 distribution
license need a license agreement with MPEG LA to use such tools for
anything non-private or commercial, while it is OK to set up a
Youtube-like service as long as no-one pays to get access to the
content.  I still have no clear idea how this applies to Norway, where
none of the patents MPEG LA is licensing are valid.  Will the
copyright terms take precedence or can those terms be ignored because
the patents are not valid in Norway?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>New laptop - some more clues and ideas based on feedback</title>
                <link>http://people.skolelinux.org/pere/blog/New_laptop___some_more_clues_and_ideas_based_on_feedback.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/New_laptop___some_more_clues_and_ideas_based_on_feedback.html</guid>
                <pubDate>Sun, 5 Jul 2015 21:40:00 +0200</pubDate>
                <description>&lt;p&gt;Several people contacted me after my previous blog post about my
need for a new laptop, and provided very useful feedback.  I wish to
thank every one of these.  Several pointed me to the possibility of
fixing my X230, and I am already in the process of getting Lenovo to
do so thanks to the on site, next day support contract covering the
machine.  But the battery is almost useless (I expect to replace it
with a non-official battery) and I do not expect the machine to live
for many more years, so it is time to plan its replacement.  If I did
not have a support contract, it was suggested to find replacement parts
using &lt;a href=&quot;http://www.francecrans.com/&quot;&gt;FrancEcrans&lt;/a&gt;, but it
might present a language barrier as I do not understand French.&lt;/p&gt;

&lt;p&gt;One tip I got was to use the
&lt;a href=&quot;https://skinflint.co.uk/?cat=nb&quot;&gt;Skinflint&lt;/a&gt; web service to
compare laptop models.  It seem to have more models available than
prisjakt.no.  Another tip I got from someone I know have similar
keyboard preferences was that the HP EliteBook 840 keyboard is not
very good, and this matches my experience with earlier EliteBook
keyboards I tested.  Because of this, I will not consider it any further.

&lt;p&gt;When I wrote my blog post, I was not aware of Thinkpad X250, the
newest Thinkpad X model.  The keyboard reintroduces mouse buttons
(which is missing from the X240), and is working fairly well with
Debian Sid/Unstable according to
&lt;a href=&quot;http://www.corsac.net/X250/&quot;&gt;Corsac.net&lt;/a&gt;.  The reports I
got on the keyboard quality are not consistent.  Some say the keyboard
is good, others say it is ok, while others say it is not very good.
Those with experience from X41 and and X60 agree that the X250
keyboard is not as good as those trusty old laptops, and suggest I
keep and fix my X230 instead of upgrading, or get a used X230 to
replace it.  I&#39;m also told that the X250 lack leds for caps lock, disk
activity and battery status, which is very convenient on my X230.  I&#39;m
also told that the CPU fan is running very often, making it a bit
noisy.  In any case, the X250 do not work out of the box with Debian
Stable/Jessie, one of my requirements.&lt;/p&gt;

&lt;p&gt;I have also gotten a few vendor proposals, one was
&lt;a href=&quot;http://pro-star.com&quot;&gt;Pro-Star&lt;/a&gt;, another was
&lt;a href=&quot;http://shop.gluglug.org.uk/product/libreboot-x200/&quot;&gt;Libreboot&lt;/a&gt;.
The latter look very attractive to me.&lt;/p&gt;

&lt;p&gt;Again, thank you all for the very useful feedback.  It help a lot
as I keep looking for a replacement.&lt;/p&gt;

&lt;p&gt;Update 2015-07-06: I was recommended to check out the
&lt;a href=&quot;&quot;&gt;lapstore.de&lt;/a&gt; web shop for used laptops.  They got several
different
&lt;a href=&quot;http://www.lapstore.de/f.php/shop/lapstore/f/411/lang/x/kw/Lenovo_ThinkPad_X_Serie/&quot;&gt;old
thinkpad X models&lt;/a&gt;, and provide one year warranty.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Time to find a new laptop, as the old one is broken after only two years</title>
                <link>http://people.skolelinux.org/pere/blog/Time_to_find_a_new_laptop__as_the_old_one_is_broken_after_only_two_years.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Time_to_find_a_new_laptop__as_the_old_one_is_broken_after_only_two_years.html</guid>
                <pubDate>Fri, 3 Jul 2015 07:10:00 +0200</pubDate>
                <description>&lt;p&gt;My primary work horse laptop is failing, and will need a
replacement soon.  The left 5 cm of the screen on my Thinkpad X230
started flickering yesterday, and I suspect the cause is a broken
cable, as changing the angle of the screen some times get rid of the
flickering.&lt;/p&gt;

&lt;p&gt;My requirements have not really changed since I bought it, and is
still as
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Thank_you_Thinkpad_X41__for_your_long_and_trustworthy_service.html&quot;&gt;I
described them in 2013&lt;/a&gt;.  The last time I bought a laptop, I had
good help from
&lt;a href=&quot;http://www.prisjakt.no/category.php?k=353&quot;&gt;prisjakt.no&lt;/a&gt;
where I could select at least a few of the requirements (mouse pin,
wifi, weight) and go through the rest manually.  Three button mouse
and a good keyboard is not available as an option, and all the three
laptop models proposed today (Thinkpad X240, HP EliteBook 820 G1 and
G2) lack three mouse buttons).  It is also unclear to me how good the
keyboard on the HP EliteBooks are.  I hope Lenovo have not messed up
the keyboard, even if the quality and robustness in the X series have
deteriorated since X41.&lt;/p&gt;

&lt;p&gt;I wonder how I can find a sensible laptop when none of the options
seem sensible to me?  Are there better services around to search the
set of available laptops for features?  Please send me an email if you
have suggestions.&lt;/p&gt;

&lt;p&gt;Update 2015-07-23: I got a suggestion to check out the FSF
&lt;a href=&quot;http://www.fsf.org/resources/hw/endorsement/respects-your-freedom&quot;&gt;list
of endorsed hardware&lt;/a&gt;, which is useful background information.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>MakerCon Nordic videos now available on Frikanalen</title>
                <link>http://people.skolelinux.org/pere/blog/MakerCon_Nordic_videos_now_available_on_Frikanalen.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/MakerCon_Nordic_videos_now_available_on_Frikanalen.html</guid>
                <pubDate>Thu, 2 Jul 2015 14:10:00 +0200</pubDate>
                <description>&lt;p&gt;Last oktober I was involved on behalf of
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;NUUG&lt;/a&gt; with recording the talks at
&lt;a href=&quot;http://www.makercon.no/&quot;&gt;MakerCon Nordic&lt;/a&gt;, a conference for
the Maker movement.  Since then it has been the plan to publish the
recordings on &lt;a href=&quot;http://www.frikanalen.no/&quot;&gt;Frikanalen&lt;/a&gt;, which
finally happened the last few days.  A few talks are missing because
the speakers asked the organizers to not publish them, but most of the
talks are available.  The talks are being broadcasted on RiksTV
channel 50 and using multicast on Uninett, as well as being available
from the Frikanalen web site.  The unedited recordings are
&lt;a href=&quot;https://www.youtube.com/user/MakerConNordic/&quot;&gt;available on
Youtube too&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This is the list of talks available at the moment.  Visit the
&lt;a href=&quot;http://beta.frikanalen.no/video/?q=makercon&quot;&gt;Frikanalen video
pages&lt;/a&gt; to view them.&lt;/p&gt;

&lt;ul&gt;

  &lt;li&gt;Evolutionary algorithms as a design tool - from art
      to robotics (Kyrre Glette)&lt;/li&gt;

  &lt;li&gt;Make and break (Hans Gerhard Meier)&lt;/li&gt;

  &lt;li&gt;Making a one year school course for young makers
      (Olav Helland)&lt;/li&gt;

  &lt;li&gt;Innovation Inspiration - IPR Databases as a Source of
      Inspiration (Hege Langlo)&lt;/li&gt;

  &lt;li&gt;Making a toy for makers (Erik Torstensson)&lt;/li&gt;

  &lt;li&gt;How to make 3D printer electronics (Elias Bakken)&lt;/li&gt;

  &lt;li&gt;Hovering Clouds: Looking at online tool offerings for Product
      Design and 3D Printing (William Kempton)&lt;/li&gt;

  &lt;li&gt;Travelling maker stories (Øyvind Nydal Dahl)&lt;/li&gt;

  &lt;li&gt;Making the first Maker Faire in Sweden (Nils Olander)&lt;/li&gt;

  &lt;li&gt;Breaking the mold: Printing 1000’s of parts (Espen Sivertsen)&lt;/li&gt;

  &lt;li&gt;Ultimaker — and open source 3D printing (Erik de Bruijn)&lt;/li&gt;

  &lt;li&gt;Autodesk’s 3D Printing Platform: Sparking innovation (Hilde
      Sevens)&lt;/li&gt;

  &lt;li&gt;How Making is Changing the World – and How You Can Too!
      (Jennifer Turliuk)&lt;/li&gt;

  &lt;li&gt;Open-Source Adventuring: OpenROV, OpenExplorer and the Future of
      Connected Exploration (David Lang)&lt;/li&gt;

  &lt;li&gt;Making in Norway (Haakon Karlsen Jr., Graham Hayward and Jens
      Dyvik)&lt;/li&gt;

  &lt;li&gt;The Impact of the Maker Movement (Mike Senese)&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;Part of the reason this took so long was that the scripts NUUG had
to prepare a recording for publication were five years old and no
longer worked with the current video processing tools (command line
argument changes).  In addition, we needed better audio normalization,
which sent me on a detour to
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Measuring_and_adjusting_the_loudness_of_a_TV_channel_using_bs1770gain.html&quot;&gt;package
bs1770gain for Debian&lt;/a&gt;.  Now this is in place and it became a lot
easier to publish NUUG videos on Frikanalen.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Graphing the Norwegian company ownership structure</title>
                <link>http://people.skolelinux.org/pere/blog/Graphing_the_Norwegian_company_ownership_structure.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Graphing_the_Norwegian_company_ownership_structure.html</guid>
                <pubDate>Mon, 15 Jun 2015 14:00:00 +0200</pubDate>
                <description>&lt;p&gt;It is a bit work to figure out the ownership structure of companies
in Norway.  The information is publicly available, but one need to
recursively look up ownership for all owners to figure out the complete
ownership graph of a given set of companies.  To save me the work in
the future, I wrote a script to do this automatically, outputting the
ownership structure using the Graphviz/dotty format.  The data source
is web scraping from &lt;a href=&quot;http://www.proff.no/&quot;&gt;Proff&lt;/a&gt;, because
I failed to find a useful source directly from the official keepers of
the ownership data, &lt;a href=&quot;http://www.brreg.no/&quot;&gt;Brønnøysundsregistrene&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;To get an ownership graph for a set of companies, fetch
&lt;a href=&quot;https://github.com/petterreinholdtsen/brreg-norway-ownership-graph&quot;&gt;the code from git&lt;/a&gt; and run it using the organisation number.  I&#39;m
using the Norwegian newspaper Dagbladet as an example here, as its
ownership structure is very simple:&lt;/p&gt;

&lt;pre&gt;
% time ./bin/eierskap-dotty 958033540 &gt; dagbladet.dot

real    0m2.841s
user    0m0.184s
sys     0m0.036s
%
&lt;/pre&gt;

&lt;p&gt;The script accept several organisation numbers on the command line,
allowing a cluster of companies to be graphed in the same image.  The
resulting dot file for the example above look like this.  The edges
are labeled with the ownership percentage, and the nodes uses the
organisation number as their name and the name as the label:&lt;/p&gt;

&lt;pre&gt;
digraph ownership {
rankdir = LR;
&quot;Aller Holding A/s&quot; -&gt; &quot;910119877&quot; [label=&quot;100%&quot;]
&quot;910119877&quot; -&gt; &quot;998689015&quot; [label=&quot;100%&quot;]
&quot;998689015&quot; -&gt; &quot;958033540&quot; [label=&quot;99%&quot;]
&quot;974530600&quot; -&gt; &quot;958033540&quot; [label=&quot;1%&quot;]
&quot;958033540&quot; [label=&quot;AS DAGBLADET&quot;]
&quot;998689015&quot; [label=&quot;Berner Media Holding AS&quot;]
&quot;974530600&quot; [label=&quot;Dagbladets Stiftelse&quot;]
&quot;910119877&quot; [label=&quot;Aller Media AS&quot;]
}
&lt;/pre&gt;

&lt;p&gt;To view the ownership graph, run &quot;&lt;tt&gt;dotty dagbladet.dot&lt;/tt&gt;&quot; or
convert it to a PNG using &quot;&lt;tt&gt;dot -T png dagbladet.dot &gt;
dagbladet.png&lt;/tt&gt;&quot;.  The result can be seen below:&lt;/p&gt;

&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2015-06-15-ownership-graphs-norway-dagbladet.png&quot; width=&quot;80%&quot;&gt;

&lt;p&gt;Note that I suspect the &quot;Aller Holding A/S&quot; entry to be incorrect
data in the official ownership register, as that name is not
registered in the official company register for Norway.  The ownership
register is sensitive to typos and there seem to be no strict checking
of the ownership links.&lt;/p&gt;

&lt;p&gt;Let me know if you improve the script or find better data sources.
The code is licensed according to GPL 2 or newer.&lt;/p&gt;

&lt;p&gt;Update 2015-06-15: Since the initial post I&#39;ve been told that
&quot;&lt;a href=&quot;http://www.proff.dk/firma/carl-allers-etablissement-aktieselskab/københavn-v/hovedkontorer/13624518-3/&quot;&gt;Aller
Holding A/S&lt;/a&gt;&quot; is a Danish company, which explain why it did not
have a Norwegian organisation number.  I&#39;ve also been told that there
is a &lt;a href=&quot;http://www.brreg.no/automatiske/webservices/&quot;&gt;web
services API available&lt;/a&gt; from Brønnøysundsregistrene, for those
willing to accept the terms or pay the price.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Measuring and adjusting the loudness of a TV channel using bs1770gain</title>
                <link>http://people.skolelinux.org/pere/blog/Measuring_and_adjusting_the_loudness_of_a_TV_channel_using_bs1770gain.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Measuring_and_adjusting_the_loudness_of_a_TV_channel_using_bs1770gain.html</guid>
                <pubDate>Thu, 11 Jun 2015 13:40:00 +0200</pubDate>
                <description>&lt;p&gt;Television loudness is the source of frustration for viewers
everywhere.  Some channels are very load, others are less loud, and
ads tend to shout very high to get the attention of the viewers, and
the viewers do not like this.  This fact is well known to the TV
channels.  See for example the BBC white paper
&quot;&lt;a href=&quot;http://downloads.bbc.co.uk/rd/pubs/whp/whp-pdf-files/WHP202.pdf&quot;&gt;Terminology
for loudness and level dBTP, LU, and all that&lt;/a&gt;&quot; from 2011 for a
summary of the problem domain.  To better address the need for even
loadness, the TV channels got together several years ago to agree on a
new way to measure loudness in digital files as one step in
standardizing loudness.  From this came the ITU-R standard BS.1770,
&quot;&lt;a href=&quot;http://www.itu.int/rec/R-REC-BS.1770/en&quot;&gt;Algorithms to
measure audio programme loudness and true-peak audio level&lt;/a&gt;&quot;.&lt;/p&gt;

&lt;p&gt;The ITU-R BS.1770 specification describe an algorithm to measure
loadness in LUFS (Loudness Units, referenced to Full Scale). But
having a way to measure is not enough.  To get the same loudness
across TV channels, one also need to decide which value to standardize
on.  For European TV channels, this was done in the EBU Recommondaton
R128, &quot;&lt;a href=&quot;https://tech.ebu.ch/docs/r/r128.pdf&quot;&gt;Loudness
normalisation and permitted maximum level of audio signals&lt;/a&gt;&quot;, which
specifies a recommended level of -23 LUFS.  In Norway, I have been
told that NRK, TV2, MTG and SBS have decided among themselves to
follow the R128 recommondation for playout from 2016-03-01.&lt;/p&gt;

&lt;p&gt;There are free software available to measure and adjust the loudness
level using the LUFS.  In Debian, I am aware of a library named
&lt;a href=&quot;https://tracker.debian.org/pkg/libebur128&quot;&gt;libebur128&lt;/a&gt;
able to measure the loudness and since yesterday morning a new binary
named &lt;a href=&quot;http://bs1770gain.sourceforge.net&quot;&gt;bs1770gain&lt;/a&gt;
capable of both measuring and adjusting was uploaded and is waiting
for NEW processing.  I plan to maintain the latter in Debian under the
&lt;a href=&quot;https://qa.debian.org/developer.php?email=pkg-multimedia-maintainers%40lists.alioth.debian.org&quot;&gt;Debian
multimedia&lt;/a&gt; umbrella.&lt;/p&gt;

&lt;p&gt;The free software based TV channel I am involved in,
&lt;a href=&quot;http://www.frikanalen.no/&quot;&gt;Frikanalen&lt;/a&gt;, plan to follow the
R128 recommondation ourself as soon as we can adjust the software to
do so, and the bs1770gain tool seem like a good fit for that part of
the puzzle to measure loudness on new video uploaded to Frikanalen.
Personally, I plan to use bs1770gain to adjust the loudness of videos
I upload to Frikanalen on behalf of &lt;a href=&quot;http://www.nuug.no/&quot;&gt;the
NUUG member organisation&lt;/a&gt;.  The program seem to be able to measure
the LUFS value of any media file handled by ffmpeg, but I&#39;ve only
successfully adjusted the LUFS value of WAV files.  I suspect it
should be able to adjust it for all the formats handled by ffmpeg.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Norwegian citizens now required by law to give their fingerprint to the police</title>
                <link>http://people.skolelinux.org/pere/blog/Norwegian_citizens_now_required_by_law_to_give_their_fingerprint_to_the_police.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Norwegian_citizens_now_required_by_law_to_give_their_fingerprint_to_the_police.html</guid>
                <pubDate>Sun, 10 May 2015 16:00:00 +0200</pubDate>
                <description>&lt;p&gt;5 days ago, the Norwegian Parliament decided, unanimously, that all
citizens of Norway, no matter if they are suspected of something
criminal or not, are
&lt;a href=&quot;https://www.holderdeord.no/votes/1430838871e&quot;&gt;required to
give fingerprints to the police&lt;/a&gt; (vote details from Holder de
ord).  The law make it sound like it will be optional, but in a few
years there will be no option any more.  The ID will be required to
vote, to get a bank account, a bank card, to change address on the
post office, to receive an electronic ID or to get a drivers license
and many other tasks required to function in Norway.  The banks plan
to stop providing their own ID on the bank cards when this new
national ID is introduced, and the national road authorities plan to
change the drivers license to no longer be usable as identity cards.
In effect, to function as a citizen in Norway a national ID card will
be required, and to get it one need to provide the fingerprints to
the police.&lt;/p&gt;

&lt;p&gt;In addition to handing the fingerprint to the police (which
promised to not make a copy of the fingerprint image at that point in
time, but say nothing about doing it later), a picture of the
fingerprint will be stored on the RFID chip, along with a picture of
the face and other information about the person.  Some of the
information will be encrypted, but the encryption will be the same
system as currently used in the passports.  The codes to decrypt will
be available to a lot of government offices and their suppliers around
the globe, but for those that do not know anyone in those circles it
is good to know that
&lt;a href=&quot;http://www.theguardian.com/technology/2006/nov/17/news.homeaffairs&quot;&gt;the
encryption is already broken&lt;/a&gt;.  And they
&lt;a href=&quot;http://www.networkworld.com/article/2215057/wireless/bad-guys-could-read-rfid-passports-at-217-feet--maybe-a-lot-more.html&quot;&gt;can
be read from 70 meters away&lt;/a&gt;.  This can be mitigated a bit by
keeping it in a Faraday cage (metal box or metal wire container), but
one will be required to take it out of there often enough to expose
ones private and personal information to a lot of people that have no
business getting access to that information.&lt;/p&gt;

&lt;p&gt;The new Norwegian national IDs are a vehicle for identity theft,
and I feel sorry for us all having politicians accepting such invasion
of privacy without any objections.  So are the Norwegian passports,
but it has been possible to function in Norway without those so far.
That option is going away with the passing of the new law.  In this, I
envy the Germans, because for them it is optional how much biometric
information is stored in their national ID.&lt;/p&gt;

&lt;p&gt;And if forced collection of fingerprints was not bad enough, the
information collected in the national ID card register can be handed
over to foreign intelligence services and police authorities, &quot;when
extradition is not considered disproportionate&quot;.&lt;/p&gt;

&lt;p&gt;Update 2015-05-12: For those unable to believe that the Parliament
really could make such decision, I wrote
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Blir_det_virkelig_krav_om_fingeravtrykk_i_nasjonale_ID_kort_.html&quot;&gt;a
summary of the sources I have&lt;/a&gt; for concluding the way I do
(Norwegian Only, as the sources are all in Norwegian).&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>What would it cost to store all phone calls in Norway?</title>
                <link>http://people.skolelinux.org/pere/blog/What_would_it_cost_to_store_all_phone_calls_in_Norway_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_would_it_cost_to_store_all_phone_calls_in_Norway_.html</guid>
                <pubDate>Fri, 1 May 2015 19:30:00 +0200</pubDate>
                <description>&lt;p&gt;Many years ago, a friend of mine calculated how much it would cost
to store the sound of all phone calls in Norway, and came up with the
cost of around 20 million NOK (2.4 mill EUR) for all the calls in a
year.  I got curious and wondered what the same calculation would look
like today.  To do so one need an idea of how much data storage is
needed for each minute of sound, how many minutes all the calls in
Norway sums up to, and the cost of data storage.&lt;/p&gt;

&lt;p&gt;The 2005 numbers are from
&lt;a href=&quot;http://www.digi.no/analyser/2005/10/04/vi-prater-stadig-mindre-i-roret&quot;&gt;digi.no&lt;/a&gt;,
the 2012 numbers are from
&lt;a href=&quot;http://www.nkom.no/aktuelt/nyheter/fortsatt-vekst-i-det-norske-ekommarkedet&quot;&gt;a
NKOM report&lt;/a&gt;, and I got the 2013 numbers after asking NKOM via
email.  I was told the numbers for 2014 will be presented May 20th,
and decided not to wait for those, as I doubt they will be very
different from the numbers from 2013.&lt;/p&gt;

&lt;p&gt;The amount of data storage per minute sound depend on the wanted
quality, and for phone calls it is generally believed that 8 Kbit/s is
enough.  See for example a
&lt;a href=&quot;http://www.cisco.com/c/en/us/support/docs/voice/voice-quality/7934-bwidth-consume.html#topic1&quot;&gt;summary
on voice quality from Cisco&lt;/a&gt; for some alternatives.  8 Kbit/s is 60
Kbytes/min, and this can be multiplied with the number of call minutes
to get the storage requirements.&lt;/p&gt;

&lt;p&gt;Storage prices varies a lot, depending on speed, backup strategies,
availability requirements etc.  But a simple way to calculate can be
to use the price of a TiB-disk (around 1000 NOK / 120 EUR) and double
it to take space, power and redundancy into account.  It could be much
higher with high speed and good redundancy requirements.&lt;/p&gt;

&lt;p&gt;But back to the question, What would it cost to store all phone
calls in Norway?  Not much.  Here is a small table showing the
estimated cost, which is within the budget constraint of most medium
and large organisations:&lt;/p&gt;

&lt;table border=&quot;1&quot;&gt;
&lt;tr&gt;&lt;th&gt;Year&lt;/th&gt;&lt;th&gt;Call minutes&lt;/th&gt;&lt;th&gt;Size&lt;/th&gt;&lt;th&gt;Price in NOK / EUR&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;2005&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;24 000 000 000&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;1.3 PiB&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;3 mill / 358 000&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;2012&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;18 000 000 000&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;1.0 PiB&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;2.2 mill / 262 000&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;2013&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;17 000 000 000&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;950 TiB&lt;/td&gt;&lt;td align=&quot;right&quot;&gt;2.1 mill / 250 000&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

&lt;p&gt;This is the cost of buying the storage.  Maintenance need to be
taken into account too, but calculating that is left as an exercise
for the reader.  But it is obvious to me from those numbers that
recording the sound of all phone calls in Norway is not going to be
stopped because it is too expensive.  I wonder if someone already is
collecting the data?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First Jessie based Debian Edu beta release</title>
                <link>http://people.skolelinux.org/pere/blog/First_Jessie_based_Debian_Edu_beta_release.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_Jessie_based_Debian_Edu_beta_release.html</guid>
                <pubDate>Sun, 26 Apr 2015 14:10:00 +0200</pubDate>
                <description>&lt;p&gt;I am happy to report that the Debian Edu team sent out
&lt;a href=&quot;https://lists.debian.org/debian-edu-announce/2015/04/msg00000.html&quot;&gt;this
announcement today&lt;/a&gt;:&lt;/p&gt;

&lt;pre&gt;
the Debian Edu / Skolelinux project is pleased to announce the first
*beta* release of Debian Edu &quot;Jessie&quot; 8.0+edu0~b1, which for the first
time is composed entirely of packages from the current Debian stable
release, Debian 8 &quot;Jessie&quot;.

(As most reading this will know, Debian &quot;Jessie&quot; hasn&#39;t actually been
released by now. The release is still in progress but should finish
later today ;)

We expect to make a final release of Debian Edu &quot;Jessie&quot; in the coming
weeks, timed with the first point release of Debian Jessie. Upgrades
from this beta release of Debian Edu Jessie to the final release will
be possible and encouraged!

Please report feedback to debian-edu@lists.debian.org and/or submit
bugs: http://wiki.debian.org/DebianEdu/HowTo/ReportBugs

Debian Edu - sometimes also known as &quot;Skolelinux&quot; - is a complete
operating system for schools, universities and other
organisations. Through its pre- prepared installation profiles
administrators can install servers, workstations and laptops which
will work in harmony on the school network.  With Debian Edu, the
teachers themselves or their technical support staff can roll out a
complete multi-user, multi-machine study environment within hours or
days.

Debian Edu is already in use at several hundred schools all over the
world, particularly in Germany, Spain and Norway. Installations come
with hundreds of applications pre-installed, plus the whole Debian
archive of thousands of compatible packages within easy reach.

For those who want to give Debian Edu Jessie a try, download and
installation instructions are available, including detailed
instructions in the manual explaining the first steps, such as setting
up a network or adding users.  Please note that the password for the
user your prompted for during installation must have a length of at
least 5 characters!

== Where to download ==

A multi-architecture CD / usbstick image (649 MiB) for network booting
can be downloaded at the following locations:

    http://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~b1-CD.iso
    rsync -avzP ftp.skolelinux.org::skolelinux-cd/debian-edu-8.0+edu0~b1-CD.iso . 

The SHA1SUM of this image is: 54a524d16246cddd8d2cfd6ea52f2dd78c47ee0a

Alternatively an extended DVD / usbstick image (4.9 GiB) is also
available, with more software included (saving additional download
time):

    http://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~b1-USB.iso
    rsync -avzP ftp.skolelinux.org::skolelinux-cd/debian-edu-8.0+edu0~b1-USB.iso 

The SHA1SUM of this image is: fb1f1504a490c077a48653898f9d6a461cb3c636

Sources are available from the Debian archive, see
http://ftp.debian.org/debian-cd/8.0.0/source/ for some download
options.

== Debian Edu Jessie manual in seven languages ==

Please see https://wiki.debian.org/DebianEdu/Documentation/Jessie/ for
the English version of the Debian Edu jessie manual.

This manual has been fully translated to German, French, Italian,
Danish, Dutch and Norwegian Bokmål. A partly translated version exists
for Spanish.  See http://maintainer.skolelinux.org/debian-edu-doc/ for
online version of the translated manual.

More information about Debian 8 &quot;Jessie&quot; itself is provided in the
release notes and the installation manual:
- http://www.debian.org/releases/jessie/releasenotes
- http://www.debian.org/releases/jessie/installmanual


== Errata / known problems ==

    It takes up to 15 minutes for a changed hostname to be updated via
    DHCP (#780461).

    The hostname script fails to update LTSP server hostname (#783087). 

Workaround: run update-hostname-from-ip on the client to update the
hostname immediately.

Check https://wiki.debian.org/DebianEdu/Status/Jessie for a possibly
more current and complete list.

== Some more details about Debian Edu 8.0+edu0~b1 Codename Jessie released 2015-04-25 ==

=== Software updates ===

Everything which is new in Debian 8 Jessie, e.g.:

 * Linux kernel 3.16.7-ctk9; for the i386 architecture, support for
   i486 processors has been dropped; oldest supported ones: i586 (like
   Intel Pentium and AMD K5).

 * Desktop environments KDE Plasma Workspaces 4.11.13, GNOME 3.14,
   Xfce 4.12, LXDE 0.5.6
   * new optional desktop environment: MATE 1.8
   * KDE Plasma Workspaces is installed by default; to choose one of
     the others see the manual.
 * the browsers Iceweasel 31 ESR and Chromium 41
 * LibreOffice 4.3.3
 * GOsa 2.7.4
 * LTSP 5.5.4
 * CUPS print system 1.7.5
 * new boot framework: systemd
 * Educational toolbox GCompris 14.12
 * Music creator Rosegarden 14.02
 * Image editor Gimp 2.8.14
 * Virtual stargazer Stellarium 0.13.1
 * golearn 0.9
 * tuxpaint 0.9.22
 * New version of debian-installer from Debian Jessie.
 * Debian Jessie includes about 43000 packages available for installation.
 * More information about Debian 8 Jessie is provided in its release
   notes and the installation manual, see the link above.

=== Installation changes ===

    Installations done via PXE now also install firmware automatically
    for the hardware present.

=== Fixed bugs ===

A number of bugs have been fixed in this release; the most noticeable
from a user perspective:

 * Inserting incorrect DNS information in Gosa will no longer break
   DNS completely, but instead stop DNS updates until the incorrect
   information is corrected (710362)

 * shutdown-at-night now shuts the system down if gdm3 is used (775608). 

=== Sugar desktop removed ===

As the Sugar desktop was removed from Debian Jessie, it is also not
available in Debian Edu jessie.


== About Debian Edu / Skolelinux ==

Debian Edu, also known as Skolelinux, is a Linux distribution based on
Debian providing an out-of-the box environment of a completely
configured school network. Directly after installation a school server
running all services needed for a school network is set up just
waiting for users and machines being added via GOsa², a comfortable
Web-UI. A netbooting environment is prepared using PXE, so after
initial installation of the main server from CD or USB stick all other
machines can be installed via the network. The provided school server
provides LDAP database and Kerberos authentication service,
centralized home directories, DHCP server, web proxy and many other
services.  The desktop contains more than 60 educational software
packages and more are available from the Debian archive, and schools
can choose between KDE, GNOME, LXDE, Xfce and MATE desktop
environment.

== About Debian ==

The Debian Project was founded in 1993 by Ian Murdock to be a truly
free community project. Since then the project has grown to be one of
the largest and most influential open source projects. Thousands of
volunteers from all over the world work together to create and
maintain Debian software. Available in 70 languages, and supporting a
huge range of computer types, Debian calls itself the universal
operating system.

== Thanks ==

Thanks to everyone making Debian and Debian Edu / Skolelinux happen!
You rock.
&lt;/pre&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Shirish Agarwal</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Shirish_Agarwal.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Shirish_Agarwal.html</guid>
                <pubDate>Wed, 15 Apr 2015 09:20:00 +0200</pubDate>
                <description>&lt;p&gt;It was a surprise to me to learn that project to create a complete
computer system for schools I&#39;ve involved in,
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt;, was
being used in India.  But apparently it is, and I managed to get an
interview with one of the friends of the project there, Shirish
Agarwal.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My name is Shirish Agarwal. Based out of the educational and
historical city of Pune, from the western state of Maharashtra, India.
My bread comes from giving training, giving policy tips,
installations on free software to mom and pop shops in different
fields from Desktop publishing to retail shops as well as work with
few software start-ups as well.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;It started innocently enough. I have been using Debian for a few
years and in one local minidebconf / debutsav I was asked if there was
anything for schools or education. I had worked / played with free
educational softwares such as Gcompris and Stellarium for my many
nieces and nephews so researched and found Debian Edu or Skolelinux as
it was known then.  Since then I have started using the various
education meta-packages provided by the project.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;It&#39;s closest I have seen where a package full of educational
software are packed, which are free and open (both literally and
figuratively).  Even if I take the simplest software which is
gcompris, the number of activities therein are amazing. Another one of
the softwares that I have liked for a long time is stellarium. Even
pysycache is cool except for couple of issues I encountered
&lt;a href=&quot;https://bugs.debian.org/781841&quot;&gt;#781841&lt;/a&gt; and
&lt;a href=&quot;https://bugs.debian.org/781842&quot;&gt;#781842&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I prefer software installed on the system over web based solutions,
as a web site can disappear any time but the software on disk has the
possibility of a larger life span.  Of course with both it&#39;s more a
question if it has enough users who make it fun or sustainable or both
for the developer per-se.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I do see that the Debian Edu team seems to be short-handed and I
think more efforts should be made to make it popular and ask and take
help from people and the larger community wherever possible.&lt;/p&gt;

&lt;p&gt;I don&#39;t see any disadvantage to use Skolelinux apart from the fact
that most apps. are generic which is good or bad how you see it.
However, saying that I do acknowledge the fact that the canvas is
pretty big and there are lot of interesting ideas that could be done
but for reasons not known not done or if done I don&#39;t know about them.
Let me share some of the ideas (these are more upstream based but
still) I have had for a long time :&lt;/p&gt;

&lt;p&gt;1. Classical maths question of two trains in opposing directions
each running @x kmph/mph at y distance, when they will meet and how
far would each travel and similar questions like these.

&lt;p&gt;The computer is a fantastic system where questions like these can
be drawn, animated and the methodology and answers teased out in
interactive manner. While sites such as the
&lt;a href=&quot;http://mathforum.org/dr.math/faq/faq.two.trains.html&quot;&gt;Ask
Dr. Math FAQ on The Two Trains problem&lt;/a&gt; (as an example or point of
inspiration) can be used there is lot more that can be done.  I dunno
if there is a free software which does something like this.  The idea
being a blend of objects + animation + interaction which does
this. The whole interaction could be gamified with points or sounds or
colourful celebration whenever the user gets even part of the question
or/and methodology right. That would help reinforce good behaviour.
This understanding could be used to share/showcase everything from how
the first wheel came to be, to evolution to how astronomy started,
psychics and everything in-between.&lt;/p&gt;

&lt;p&gt;One specific idea in the train part was having the Linux mascot on
one train and the BSD or GNU mascot on the other train and they
meeting somewhere in-between. Characters from blender movies could
also be used.&lt;/p&gt;

&lt;p&gt;2. Loads of crossword-puzzles with reference to subjects: We have
enormous data sets in Wikipedia and Wikitionary.  I don&#39;t think it
should be a big job to design crossword puzzles. Using categories and
sub-categories it should be doable to have Q&amp;A single word answers
from the existing data-sets. What would make it easy or hard could be
the length of the word + existence of many or few vowels depending on
the user&#39;s input.&lt;/p&gt;

&lt;p&gt;3. Jigsaw puzzles - We already have a great software called
palapeli with number of slicers making it pretty interesting. What
needs to be done is to download large number of public domain and
copyleft images, tease and use IPTC tags to categorise them into
nature, history etc.  and let it loose. This could turn to be really
huge collection of images. One source could be taken from
commons.wikimedia.org, others could be huge collection of royalty-free
stock photos. Potential is immense.&lt;/p&gt;

&lt;p&gt;Apart from this, free software suffers in two directions, we lag
both in development (of using new features per-se) and maintenance a
lot.  This is more so in educational software as these applications
need to be timely and the opportunity cost of missing deadlines is
immense. If we are able to solve issues of funding for development and
maintenance of such software I don&#39;t see any big difficulties. I know
of few start-ups in and around India who would love to develop and
maintain such software if funding issues could be solved.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;That would be huge list. Some of the softwares are obviously apt,
aptitude, debdelta, leafpad, the shell of course (zsh nowadays),
quassel for IRC. In games I use shisen-sho while card-games are evenly
between kpat and Aiselriot.  In desktops it&#39;s a tie between
gnome-flashback and mate.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I think it should first start with using specific FOSS apps. in
whatever environment they are. If it&#39;s MS-Windows or Mac so be it.
Once they are habitual with the apps. and there is buy-in from the
school management then it could be installed anywhere. Most of the
people now understand the concept of a repository because of the
various online stores so it isn&#39;t hard to convince on that front.&lt;/p&gt;

&lt;p&gt;What is harder is having enough people with technical skills and
passion to service them. If you get buy-in from one or two teachers
then ideas like above could also be asked to be done as a project as
well.&lt;/p&gt;

&lt;p&gt;I think where we fall short more than anything is in marketing. For
instance, Debian has this whole range of fonts in its archive but
there isn&#39;t even a page where all those different fonts in the La
Ipsum format could be tried out for newcomers.&lt;/p&gt;

&lt;p&gt;One of the issues faced constantly in installations is with updates
and upgrades.  People have this myth that each update and upgrade
means the user interface will / has to change. I have seen this
innumerable times.  That perhaps is one of the reasons which browsers
like Iceweasel / Firefox change user interfaces so much, not because
it might be needed or be functional but because people believe that
changed user interfaces are better. This, can easily be pointed with
the user interfaces changed with almost every MS-Windows and Mac OS
releases.&lt;/p&gt;

&lt;p&gt;The problems with Debian Edu for deployment are many. The biggest
is the huge gap between what is taught in schools and what Debian Edu
is aimed at.

&lt;p&gt;Me and my friends did teach on week-ends in a government school for
around 2 years, and
&lt;a href=&quot;https://flossexperiences.wordpress.com/2012/10/08/sharings/&quot;&gt;gathered
some experience&lt;/a&gt; there.  Some of the things we learnt/discovered
there was :&lt;/p&gt;

&lt;ol&gt;

  &lt;li&gt;Most of the teachers are very territorial about their subjects
   and they do not want you to teach anything out of the
   portion/syllabus given.&lt;/li&gt;

  &lt;li&gt;They want any activity on the system in accordance to whatever
   is in the syllabus.&lt;/li&gt;

  &lt;li&gt;There are huge barriers both with the English language and at
   times with objects or whatever. An example, let&#39;s say in gcompris
   you have objects falling down and you have to name them and let&#39;s
   say the falling object is a hat or a fedora hat, this would not be
   as recognizable as say a
   &lt;a href=&quot;https://en.wikipedia.org/wiki/Puneri_Pagadi&quot;&gt;Puneri
   Pagdi&lt;/a&gt; so there is need to inject local objects, words wherever
   possible. Especially for word-games there are so many hindi words
   which have become part of english vocabulary (for instance in
   parley), those could be made into a hinglish collection or
   something but that is something for upstream to do.&lt;/li&gt;

&lt;/ol&gt;
</description>
        </item>
        
        <item>
                <title>I&#39;m going to the Open Source Developers&#39; Conference Nordic 2015!</title>
                <link>http://people.skolelinux.org/pere/blog/I_m_going_to_the_Open_Source_Developers__Conference_Nordic_2015_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/I_m_going_to_the_Open_Source_Developers__Conference_Nordic_2015_.html</guid>
                <pubDate>Tue, 7 Apr 2015 10:30:00 +0200</pubDate>
                <description>&lt;p&gt;I am happy to let you all know that I&#39;m going to the &lt;a
href=&quot;http://act.osdc.no/osdc2015no/&quot;&gt;Open Source Developers&#39;
Conference Nordic 2015&lt;/a&gt;!&lt;/p&gt;

&lt;p&gt;It take place Friday 8th to Sunday 10th of May in Oslo next to
where I work, and I finally got around to submitting
&lt;a href=&quot;http://act.osdc.no/osdc2015no/talk/6192&quot;&gt;a talk proposal for
it&lt;/a&gt; (dead link for most people until the talk is accepted).  As
part of my involvement with the
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;Norwegian Unix User Group member
association&lt;/a&gt; I have been slightly involved in the planning of this
conference for a while now, with a focus on organising a Civic Hacking
Hackathon with our friends
over at &lt;a href=&quot;http://www.mysociety.org/&quot;&gt;mySociety&lt;/a&gt; and
&lt;a href=&quot;http://www.holderdeord.no/&quot;&gt;Holder de ord&lt;/a&gt;.  This part is
named the &#39;My Society&#39; track in the program.  There is still space for
more talks and participants.  I hope to see you there.&lt;/p&gt;

&lt;p&gt;Check out &lt;a href=&quot;http://act.osdc.no/osdc2015no/talks&quot;&gt;the talks
submitted and accepted so far&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Proof reading the Norwegian translation of Free Culture by Lessig</title>
                <link>http://people.skolelinux.org/pere/blog/Proof_reading_the_Norwegian_translation_of_Free_Culture_by_Lessig.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Proof_reading_the_Norwegian_translation_of_Free_Culture_by_Lessig.html</guid>
                <pubDate>Sat, 4 Apr 2015 09:30:00 +0200</pubDate>
                <description>&lt;p&gt;During eastern I had some time to continue working on the Norwegian
&lt;a href=&quot;http://www.docbook.org/&quot;&gt;docbook&lt;/a&gt; version of the 2004 book
&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt; by Lawrence Lessig.
At the moment I am proof reading the finished text, looking for typos,
inconsistent wordings and sentences that do not flow as they should.
I&#39;m more than two thirds done with the text, and welcome others to
check the text up to chapter 13.  The current status is available on the
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;
project pages.  You can also check out the 
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.pdf?raw=true&quot;&gt;PDF&lt;/a&gt;,
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.epub?raw=true&quot;&gt;EPUB&lt;/a&gt;
and HTML version available in the
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/tree/master/archive&quot;&gt;archive
directory&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Please report typos, bugs and improvements to the github project if
you find any.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Frikanalen, Norwegian TV channel for technical topics</title>
                <link>http://people.skolelinux.org/pere/blog/Frikanalen__Norwegian_TV_channel_for_technical_topics.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Frikanalen__Norwegian_TV_channel_for_technical_topics.html</guid>
                <pubDate>Mon, 9 Mar 2015 11:10:00 +0100</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.nuug.no/&quot;&gt;Norwegian Unix User Group&lt;/a&gt;,
where I am a member, and where people interested in free software,
open standards and UNIX like operating systems like Linux and the BSDs
come together, record our monthly technical presentations on video.
The purpose is to document the talks and spread them to a wider
audience.  For this, the the Norwegian nationwide open channel
&lt;a href=&quot;http://www.frikanalen.no/&quot;&gt;Frikanalen&lt;/a&gt; is a useful venue.
Since a few days ago, when I figured out the
&lt;a href=&quot;http://beta.frikanalen.no/api/&quot;&gt;REST API&lt;/a&gt; to program the
&lt;a href=&quot;http://beta.frikanalen.tv/guide/&quot;&gt;channel time schedule&lt;/a&gt;,
the channel has been filled with NUUG talks, related recordings and
some Creative Commons licensed TED talks (from archive.org).  I fill
all &quot;leftover bits&quot; on the channel with content from NUUG, which at
the moment is almost 17 of 24 hours every day.&lt;/p&gt;

&lt;p&gt;The list of NUUG videos
&lt;a href=&quot;http://beta.frikanalen.tv/organization/82&quot;&gt;uploaded so far&lt;/a&gt;
include things like a
&lt;a href=&quot;http://beta.frikanalen.tv/video/625090&quot;&gt;one hour talk by John
Perry Barlow when he visited Oslo&lt;/a&gt;, a presentation of
&lt;a href=&quot;http://beta.frikanalen.tv/video/624275&quot;&gt;Haiku, the BeOS
re-implementation&lt;/a&gt;, the
&lt;a href=&quot;http://beta.frikanalen.tv/video/624493&quot;&gt;history of FiksGataMi,
the Norwegian version of FixMyStreet&lt;/a&gt;, the good old
&lt;a href=&quot;http://beta.frikanalen.tv/video/623566&quot;&gt;Warriors of the net
video&lt;/A&gt; and many others.&lt;/p&gt;

&lt;p&gt;We have a large backlog of NUUG talks not yet uploaded to
Frikanalen, and plan to upload every useful bit to the channel to
spread the word there.  I also hope to find useful recordings from the
Chaos Computer Club and Debian conferences and spread them on the
channel as well.  But this require locating the videos and their meta
information (title, description, license, etc), and preparing the
recordings for broadcast, and I have not yet had the spare time to
focus on this.  Perhaps you want to help.  Please join us on IRC,
&lt;a href=&quot;irc://irc.freenode.net/%23nuug&quot;&gt;#nuug on irc.freenode.net&lt;/a&gt;
if you want to help make this happen.&lt;/p&gt;

&lt;p&gt;But as I said, already the channel is already almost exclusively
filled with technical topics, and if you want to learn something new
today, check out the &lt;a href=&quot;http://www.frikanalen.tv/se&quot;&gt;Ogg Theora
web stream&lt;/a&gt; or use one of the other ways to get access to the
channel.  Unfortunately the Ogg Theora recoding for distribution still
do not properly sync the video and sound.  It is generated by recoding
a internal MPEG transport stream with MPEG4 coded video (ie H.264) to
Ogg Theora / Vorbis, and we have not been able to find a way that
produces acceptable quality.  Help needed, please get in touch if you
know how to fix it using free software.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The Citizenfour documentary on the Snowden confirmations to Norway</title>
                <link>http://people.skolelinux.org/pere/blog/The_Citizenfour_documentary_on_the_Snowden_confirmations_to_Norway.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_Citizenfour_documentary_on_the_Snowden_confirmations_to_Norway.html</guid>
                <pubDate>Sat, 28 Feb 2015 22:10:00 +0100</pubDate>
                <description>&lt;p&gt;Today I was happy to learn that the documentary
&lt;a href=&quot;https://citizenfourfilm.com/&quot;&gt;Citizenfour&lt;/a&gt; by
&lt;a href=&quot;https://en.wikipedia.org/wiki/Laura_Poitras&quot;&gt;Laura Poitras&lt;/a&gt;
finally will show up in Norway.  According to the magazine
&lt;a href=&quot;http://montages.no/&quot;&gt;Montages&lt;/a&gt;, a deal has finally been
made for
&lt;a href=&quot;http://montages.no/nyheter/snowden-dokumentaren-citizenfour-far-norsk-kinodistribusjon/&quot;&gt;Cinema
distribution in Norway&lt;/a&gt; and the movie will have its premiere soon.
This is great news.  As part of my involvement with
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;the Norwegian Unix User Group&lt;/a&gt;, me and
a friend have
&lt;a href=&quot;http://www.nuug.no/news/Dokumentar_om_Snowdenbekreftelsene_til_Norge_.shtml&quot;&gt;tried
to get the movie to Norway&lt;/a&gt; ourselves, but obviously
&lt;a href=&quot;http://www.nuug.no/news/Dokumentar_om_Snowdenbekreftelsene_endelig_til_Norge_.shtml&quot;&gt;we
were too late&lt;/a&gt; and Tor Fosse beat us to it.  I am happy he did, as
the movie will make its way to the public and we do not have to make
it happen ourselves.
&lt;a href=&quot;https://www.youtube.com/watch?v=XiGwAvd5mvM&quot;&gt;The trailer&lt;/a&gt;
can be seen on youtube, if you are curious what kind of film this
is.&lt;/p&gt;

&lt;p&gt;The whistle blower Edward Snowden really deserve political asylum
here in Norway, but I am afraid he would not be safe.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The Norwegian open channel Frikanalen - 24x7 on the Internet</title>
                <link>http://people.skolelinux.org/pere/blog/The_Norwegian_open_channel_Frikanalen___24x7_on_the_Internet.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_Norwegian_open_channel_Frikanalen___24x7_on_the_Internet.html</guid>
                <pubDate>Wed, 25 Feb 2015 09:10:00 +0100</pubDate>
                <description>&lt;p&gt;The Norwegian nationwide open channel
&lt;a href=&quot;http://www.frikanalen.no/&quot;&gt;Frikanalen&lt;/a&gt; is still going
strong.  It allow everyone to send the video they want on national
television.  It is a TV station administrated completely using a web
browser, running only &lt;ahref=&quot;https://github.com/Frikanalen&quot;&gt;Free
Software&lt;/a&gt;, providing &lt;ahref=&quot;http://beta.frikanalen.tv/api&quot;&gt;a REST
api&lt;/a&gt; for administrators and members, and with distribution on the
national DVB-T distribution network RiksTV.  But only between 12:00
and 17:30 Norwegian time.  This has finally changed, after many years
with limited distribution.  A few weeks ago, we set up a Ogg Theora
stream via icecast to allow everyone with Internet access to check out
the channel the rest of the day.  This is presented on
&lt;a href=&quot;http://www.frikanalen.tv/se&quot;&gt;the Frikanalen web site now&lt;/a&gt;.  And
since a few days ago, the channel is also available
via &lt;a href=&quot;https://www.uninett.no/iptv-tilgang&quot;&gt;multicast on
UNINETT&lt;/a&gt;, available for those using IPTV TVs and set-top boxes in
the Norwegian National Research and Education network.&lt;/p&gt;

&lt;p&gt;If you want to see what is on the channel, point your media player
to one of these sources.  The first should work with most players and
browsers, while as far as I know, the multicast UDP stream only work
with VLC.&lt;/p&gt;

&lt;ul&gt;
  &lt;li&gt;&lt;a href=&quot;http://video.nuug.no/frikanalen.ogv&quot;&gt;http://video.nuug.no/frikanalen.ogv&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;udp://@224.17.43.129:1234&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;The Ogg Theora / icecast stream is not working well, as the video
and audio is slightly out of sync.  We have not been able to figure
out how to fix it.  It is generated by recoding a internal MPEG
transport stream with MPEG4 coded video (ie H.264) to Ogg Theora /
Vorbis, and the result is less then stellar.  If you have ideas how to
fix it, please let us know on frikanalen (at) nuug.no.  We currently
use this with ffmpeg2theora 0.29:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
./ffmpeg2theora.linux &amp;lt;OBE_gemini_URL.ts&amp;gt; -F 25 -x 720 -y 405 \
 --deinterlace --inputfps 25 -c 1 -H 48000 --keyint 8 --buf-delay 100 \
 --nosync -V 700 -o - | oggfwd video.nuug.no 8000 &amp;lt;pw&amp;gt; /frikanalen.ogv
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;If you get the multicast UDP stream working, please let me know, as
I am curious how far the multicast stream reach.  It do not make it to
my home network, nor any other commercially available network in
Norway that I am aware of.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Nude body scanner now present on Norwegian airport</title>
                <link>http://people.skolelinux.org/pere/blog/Nude_body_scanner_now_present_on_Norwegian_airport.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Nude_body_scanner_now_present_on_Norwegian_airport.html</guid>
                <pubDate>Tue, 10 Feb 2015 15:20:00 +0100</pubDate>
                <description>&lt;p&gt;Aftenposten, one of the largest newspapers in Norway, today report
that
&lt;a href=&quot;http://www.aftenposten.no/reise/Slik-skannes-kroppen-din-i-fremtidens-sikkerhetskontroll-490666_1.snd&quot;&gt;three
of the nude body scanners now is put to use at Gardermoen&lt;/a&gt;, the
main airport in Norway.  This way the travelers can have their body
photographed without cloths when visiting Norway.  Of course this
horrible news is presented with a positive spin, stating that &quot;now
travelers can move past the security check point faster and more
efficiently&quot;, but fail to mention that the machines in question take
pictures of their nude bodies and store them internally in the
computer, while only presenting sketch figure of the body to the
public.  The article is written in a way that leave the impression
that the new machines do not take these nude pictures and only create
the sketch figures.  In reality the same nude pictures are still
taken, but not presented to everyone.  They are still available for
the owners of the system and the people doing maintenance of the
scanners, as long as they are taken and stored.&lt;/p&gt;

&lt;p&gt;Wikipedia have a more on
&lt;a href=&quot;https://en.wikipedia.org/wiki/Full_body_scanner&quot;&gt;Full body
scanners&lt;/a&gt;, including example images and a summary of the
controversy about these scanners.&lt;/p&gt;

&lt;p&gt;Personally I will decline to use these machines, as I believe strip
searches of my body is a very intrusive attack on my privacy, and not
something everyone should have to accept to travel.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Nagios module to check if the Frikanalen video stream is working</title>
                <link>http://people.skolelinux.org/pere/blog/Nagios_module_to_check_if_the_Frikanalen_video_stream_is_working.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Nagios_module_to_check_if_the_Frikanalen_video_stream_is_working.html</guid>
                <pubDate>Sun, 8 Feb 2015 13:00:00 +0100</pubDate>
                <description>&lt;p&gt;When running a TV station with both broadcast and web stream
distribution, it is useful to know that the stream is working.  As I
am involved in the Norwegian open channel
&lt;a href=&quot;http://www.frikanalen.no/&quot;&gt;Frikanalen&lt;/a&gt; as part of my
activity in the &lt;a href=&quot;http://www.nuug.no/&quot;&gt;NUUG member
organisation&lt;/a&gt;, I wrote a script to use mplayer to connect to a
video stream, pick two images 35 seconds apart and compare them.  If
the images are missing or identical, something is probably wrong with
the stream and an alarm should be triggered.  The script is written as
a Nagios plugin, allowing us to use Nagios to run the check regularly
and sound the alarm when something is wrong.  It is able to detect
both a hanging and a broken video stream.&lt;/p&gt;

&lt;p&gt;I just uploaded the code for the script into the
&lt;a href=&quot;https://github.com/Frikanalen/frikanalen/blob/master/nagios-plugin/check_video_stream_images&quot;&gt;Frikanalen
git repository&lt;/a&gt; on github.  If you run a TV station with web
streaming, perhaps you can find it useful too.&lt;/p&gt;

&lt;p&gt;Last year, the Frikanalen public TV station transformed into using
only Linux based free software to administrate, schedule and
distribute the TV content.  The
&lt;a href=&quot;https://github.com/Frikanalen&quot;&gt;source code for the entire TV
station&lt;/a&gt; is available from the Github project page.  Everyone can
use it to send their content on national TV, and we provide both a web
GUI and &lt;a href=&quot;http://beta.frikanalen.tv/api/&quot;&gt;a web API&lt;/a&gt; to
&lt;a href=&quot;http://beta.frikanalen.tv/login/?next=/members/video/&quot;&gt;add&lt;/a&gt;
and &lt;a href=&quot;http://beta.frikanalen.tv/members/plan/&quot;&gt;schedule
content&lt;/a&gt;.  And thanks to last weeks developer gathering and
following activity, we now have the schedule
&lt;a href=&quot;http://beta.frikanalen.tv/xmltv/2015/01/01&quot;&gt;available as
XMLTV&lt;/a&gt; too.  Still a lot of work left to do, especially with the
process to add videos and with the scheduling, so your contribution is
most welcome.  Perhaps you want to set up your own TV station?&lt;/p&gt;

&lt;p&gt;Update 2015-02-25: Got a tip from Uninett about their
&lt;a href=&quot;https://scm.uninett.no/maalepaaler/qstream/&quot;&gt;qstream
monitoring system&lt;/a&gt;, which gather connection time, jitter, packet
loss and burst bandwidth usage.  It look useful to check if UDP
streams are working as they should.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Norwegian Bokmål subtitles for the FSF video User Liberation</title>
                <link>http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_subtitles_for_the_FSF_video_User_Liberation.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_subtitles_for_the_FSF_video_User_Liberation.html</guid>
                <pubDate>Mon, 12 Jan 2015 21:00:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago, the &lt;a href=&quot;https://www.fsf.org/&quot;&gt;Free Software
Foundation&lt;/a&gt; announced a new video
&lt;a href=&quot;https://www.fsf.org/blogs/community/user-liberation-watch-and-share-our-new-video&quot;&gt;explaining
Free software&lt;/a&gt; in simple terms.  The video named User Liberation is
3 minutes long, and I recommend showing it to everyone you know as a
way to explain what Free Software is all about.  Unfortunately several
of the people I know do not understand English and Spanish, so it did
not make sense to show it to them.&lt;/p&gt;

&lt;p&gt;But today I was told that
&lt;a href=&quot;https://www.fsf.org/blogs/community/user-liberation-watch-and-share-our-new-video&quot;&gt;English
subtitles were available&lt;/a&gt; and set out to provide Norwegian Bokmål
subtitles based on these.  The result has been sent to FSF and made
available in
&lt;a href=&quot;https://github.com/petterreinholdtsen/fsf-video-user-liberation-subtitles&quot;&gt;a
git repository&lt;/a&gt; provided by Github.  Please let me know if you find
errors or have improvements to the subtitles.&lt;/p&gt;

&lt;p&gt;Update 2015-02-03: Since I publised this post, FSF created a
Libreplanet
&lt;a href=&quot;http://libreplanet.org/wiki/Group:FSF/User_Liberation_Video_Translation&quot;&gt;project
to track subtitles&lt;/A&gt; for the video.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Updated version of the Norwegian web service FiksGataMi</title>
                <link>http://people.skolelinux.org/pere/blog/Updated_version_of_the_Norwegian_web_service_FiksGataMi.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Updated_version_of_the_Norwegian_web_service_FiksGataMi.html</guid>
                <pubDate>Tue, 30 Dec 2014 17:55:00 +0100</pubDate>
                <description>&lt;p&gt;I am very happy that we in the
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;Norwegian Unix User group (NUUG)&lt;/a&gt;,
spearheaded by Marius Halden from NUUG and Matthew Somerville from
&lt;a href=&quot;http://www.mysociety.org/&quot;&gt;mySociety&lt;/a&gt;, finally managed to
upgrade the code base for the Norwegian version of
&lt;a href=&quot;http://fixmystreet.org/&quot;&gt;FixMyStreet&lt;/a&gt;.  This
was the first major update since 2011. The refurbished
&lt;a href=&quot;http://www.fiksgatami.no/&quot;&gt;FiksGataMi&lt;/a&gt; is already live, and
seem to hold up the pressure.  The
&lt;a href=&quot;http://www.nuug.no/news/Pressemelding__FiksGataMi_i_oppdatert_og_mobilvennlig_klesdrakt.shtml&quot;&gt;press
release and announcement&lt;/a&gt; went out this morning.&lt;/p&gt;

&lt;p&gt;FixMyStreet is a web platform for allowing the citizens to easily
report problems with public infrastructure to the responsible
authorities.  Think of it as a shared mail client with map support,
allowing everyone to see what already was reported and comment on the
reports in public.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Of course USA loses in cyber war - NSA and friends made sure it would happen</title>
                <link>http://people.skolelinux.org/pere/blog/Of_course_USA_loses_in_cyber_war___NSA_and_friends_made_sure_it_would_happen.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Of_course_USA_loses_in_cyber_war___NSA_and_friends_made_sure_it_would_happen.html</guid>
                <pubDate>Fri, 19 Dec 2014 13:10:00 +0100</pubDate>
                <description>&lt;p&gt;So, Sony caved in
(&lt;a href=&quot;https://twitter.com/RobLowe/status/545338568512917504&quot;&gt;according
to Rob Lowe&lt;/a&gt;) and demonstrated that America lost its first cyberwar
(&lt;a href=&quot;https://twitter.com/newtgingrich/status/545339074975109122&quot;&gt;according
to Newt Gingrich&lt;/a&gt;).  It should not surprise anyone, after the
whistle blower Edward Snowden documented that the government of USA
and their allies for many years have done their best to make sure the
technology used by its citizens is filled with security holes allowing
the secret services to spy on its own population.  No one in their
right minds could believe that the ability to snoop on the people all
over the globe could only be used by the personnel authorized to do so
by the president of the United States of America.  If the capabilities
are there, they will be used by friend and foe alike, and now they are
being used to bring Sony on its knees.&lt;/p&gt;

&lt;p&gt;I doubt it will a lesson learned, and expect USA to lose its next
cyber war too, given how eager the western intelligence communities
(and probably the non-western too, but it is less in the news) seem to
be to continue its current dragnet surveillance practice.&lt;/p&gt;

&lt;p&gt;There is a reason why China and others are trying to move away from
Windows to Linux and other alternatives, and it is not to avoid
sending its hard earned dollars to Cayman Islands (or whatever
&lt;a href=&quot;https://en.wikipedia.org/wiki/Tax_haven&quot;&gt;tax haven&lt;/a&gt;
Microsoft is using these days to collect the majority of its
income. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to stay with sysvinit in Debian Jessie</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_stay_with_sysvinit_in_Debian_Jessie.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_stay_with_sysvinit_in_Debian_Jessie.html</guid>
                <pubDate>Sat, 22 Nov 2014 01:00:00 +0100</pubDate>
                <description>&lt;p&gt;By now, it is well known that Debian Jessie will not be using
sysvinit as its boot system by default.  But how can one keep using
sysvinit in Jessie?  It is fairly easy, and here are a few recipes,
courtesy of
&lt;a href=&quot;http://www.vitavonni.de/blog/201410/2014102101-avoiding-systemd.html&quot;&gt;Erich
Schubert&lt;/a&gt; and
&lt;a href=&quot;http://smcv.pseudorandom.co.uk/2014/still_universal/&quot;&gt;Simon
McVittie&lt;/a&gt;.

&lt;p&gt;If you already are using Wheezy and want to upgrade to Jessie and
keep sysvinit as your boot system, create a file
&lt;tt&gt;/etc/apt/preferences.d/use-sysvinit&lt;/tt&gt; with this content before
you upgrade:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
Package: systemd-sysv
Pin: release o=Debian
Pin-Priority: -1
&lt;/pre&gt;&lt;/blockquote&gt;&lt;p&gt;

&lt;p&gt;This file content will tell apt and aptitude to not consider
installing systemd-sysv as part of any installation and upgrade
solution when resolving dependencies, and thus tell it to avoid
systemd as a default boot system.  The end result should be that the
upgraded system keep using sysvinit.&lt;/p&gt;

&lt;p&gt;If you are installing Jessie for the first time, there is no way to
get sysvinit installed by default (debootstrap used by
debian-installer have no option for this), but one can tell the
installer to switch to sysvinit before the first boot.  Either by
using a kernel argument to the installer, or by adding a line to the
preseed file used.  First, the kernel command line argument:

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
preseed/late_command=&quot;in-target apt-get install --purge -y sysvinit-core&quot;
&lt;/pre&gt;&lt;/blockquote&gt;&lt;p&gt;

&lt;p&gt;Next, the line to use in a preseed file:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
d-i preseed/late_command string in-target apt-get install -y sysvinit-core
&lt;/pre&gt;&lt;/blockquote&gt;&lt;p&gt;

&lt;p&gt;One can of course also do this after the first boot by installing
the sysvinit-core package.&lt;/p&gt;

&lt;p&gt;I recommend only using sysvinit if you really need it, as the
sysvinit boot sequence in Debian have several hardware specific bugs
on Linux caused by the fact that it is unpredictable when hardware
devices show up during boot.  But on the other hand, the new default
boot system still have a few rough edges I hope will be fixed before
Jessie is released.&lt;/p&gt;

&lt;p&gt;Update 2014-11-26: Inspired by
&lt;ahref=&quot;https://www.mirbsd.org/permalinks/wlog-10-tg_e20141125-tg.htm#e20141125-tg_wlog-10-tg&quot;&gt;a
blog post by Torsten Glaser&lt;/a&gt;, added --purge to the preseed
line.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A Debian package for SMTP via Tor (aka SMTorP) using exim4</title>
                <link>http://people.skolelinux.org/pere/blog/A_Debian_package_for_SMTP_via_Tor__aka_SMTorP__using_exim4.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_Debian_package_for_SMTP_via_Tor__aka_SMTorP__using_exim4.html</guid>
                <pubDate>Mon, 10 Nov 2014 13:40:00 +0100</pubDate>
                <description>&lt;p&gt;The right to communicate with your friends and family in private,
without anyone snooping, is a right every citicen have in a liberal
democracy.  But this right is under serious attack these days.&lt;/p&gt;

&lt;p&gt;A while back it occurred to me that one way to make the dragnet
surveillance conducted by NSA, GCHQ, FRA and others (and confirmed by
the whisleblower Snowden) more expensive for Internet email,
is to deliver all email using SMTP via Tor.  Such SMTP option would be
a nice addition to the FreedomBox project if we could send email
between FreedomBox machines without leaking metadata about the emails
to the people peeking on the wire.  I
&lt;a href=&quot;http://lists.alioth.debian.org/pipermail/freedombox-discuss/2014-October/006493.html&quot;&gt;proposed
this on the FreedomBox project mailing list in October&lt;/a&gt; and got a
lot of useful feedback and suggestions.  It also became obvious to me
that this was not a novel idea, as the same idea was tested and
documented by Johannes Berg as early as 2006, and both
&lt;a href=&quot;https://github.com/pagekite/Mailpile/wiki/SMTorP&quot;&gt;the
Mailpile&lt;/a&gt; and &lt;a href=&quot;http://dee.su/cables&quot;&gt;the Cables&lt;/a&gt; systems
propose a similar method / protocol to pass emails between users.&lt;/p&gt;

&lt;p&gt;To implement such system one need to set up a Tor hidden service
providing the SMTP protocol on port 25, and use email addresses
looking like username@hidden-service-name.onion.  With such addresses
the connections to port 25 on hidden-service-name.onion using Tor will
go to the correct SMTP server.  To do this, one need to configure the
Tor daemon to provide the hidden service and the mail server to accept
emails for this .onion domain.  To learn more about Exim configuration
in Debian and test the design provided by Johannes Berg in his FAQ, I
set out yesterday to create a Debian package for making it trivial to
set up such SMTP over Tor service based on Debian.  Getting it to work
were fairly easy, and
&lt;a href=&quot;https://github.com/petterreinholdtsen/exim4-smtorp&quot;&gt;the
source code for the Debian package&lt;/a&gt; is available from github.  I
plan to move it into Debian if further testing prove this to be a
useful approach.&lt;/p&gt;

&lt;p&gt;If you want to test this, set up a blank Debian machine without any
mail system installed (or run &lt;tt&gt;apt-get purge exim4-config&lt;/tt&gt; to
get rid of exim4).  Install tor, clone the git repository mentioned
above, build the deb and install it on the machine.  Next, run
&lt;tt&gt;/usr/lib/exim4-smtorp/setup-exim-hidden-service&lt;/tt&gt; and follow
the instructions to get the service up and running.  Restart tor and
exim when it is done, and test mail delivery using swaks like
this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
torsocks swaks --server dutlqrrmjhtfa3vp.onion \
  --to fbx@dutlqrrmjhtfa3vp.onion
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;This will test the SMTP delivery using tor.  Replace the email
address with your own address to test your server. :)&lt;/p&gt;

&lt;p&gt;The setup procedure is still to complex, and I hope it can be made
easier and more automatic.  Especially the tor setup need more work.
Also, the package include a tor-smtp tool written in C, but its task
should probably be rewritten in some script language to make the deb
architecture independent.  It would probably also make the code easier
to review.  The tor-smtp tool currently need to listen on a socket for
exim to talk to it and is started using xinetd.  It would be better if
no daemon and no socket is needed.  I suspect it is possible to get
exim to run a command line tool for delivery instead of talking to a
socket, and hope to figure out how in a future version of this
system.&lt;/p&gt;

&lt;p&gt;Until I wipe my test machine, I can be reached using the
&lt;tt&gt;fbx@dutlqrrmjhtfa3vp.onion&lt;/tt&gt; mail address, deliverable over
SMTorP. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First Jessie based Debian Edu released (alpha0)</title>
                <link>http://people.skolelinux.org/pere/blog/First_Jessie_based_Debian_Edu_released__alpha0_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_Jessie_based_Debian_Edu_released__alpha0_.html</guid>
                <pubDate>Mon, 27 Oct 2014 20:40:00 +0100</pubDate>
                <description>&lt;p&gt;I am happy to report that I on behalf of the Debian Edu team just
sent out
&lt;a href=&quot;https://lists.debian.org/debian-edu-announce/2014/10/msg00000.html&quot;&gt;this
announcement&lt;/a&gt;:&lt;/p&gt;

&lt;pre&gt;
The Debian Edu Team is pleased to announce the release of Debian Edu
Jessie 8.0+edu0~alpha0

Debian Edu is a complete operating system for schools. Through its
various installation profiles you can install servers, workstations
and laptops which will work together on the school network. With
Debian Edu, the teachers themselves or their technical support can
roll out a complete multi-user multi-machine study environment within
hours or a few days. Debian Edu comes with hundreds of applications
pre-installed, but you can always add more packages from Debian.

For those who want to give Debian Edu Jessie a try, download and
installation instructions are available, including detailed
instructions in the manual[1] explaining the first steps, such as
setting up a network or adding users. Please note that the password
for the user your prompted for during installation must have a length
of at least 5 characters!

 [1] &amp;lt;URL: &lt;a href=&quot;https://wiki.debian.org/DebianEdu/Documentation/Jessie&quot;&gt;https://wiki.debian.org/DebianEdu/Documentation/Jessie&lt;/a&gt; &amp;gt;

Would you like to give your school&#39;s computer a longer life? Are you
tired of sneaker administration, running from computer to computer
reinstalling the operating system? Would you like to administrate all
the computers in your school using only a couple of hours every week?
Check out Debian Edu Jessie!

Skolelinux is used by at least two hundred schools all over the world,
mostly in Germany and Norway.

About Debian Edu and Skolelinux
===============================

Debian Edu, also known as Skolelinux[2], is a Linux distribution based
on Debian providing an out-of-the box environment of a completely
configured school network. Immediately after installation a school
server running all services needed for a school network is set up just
waiting for users and machines being added via GOsa², a comfortable
Web-UI. A netbooting environment is prepared using PXE, so after
initial installation of the main server from CD or USB stick all other
machines can be installed via the network.  The provided school server
provides LDAP database and Kerberos authentication service,
centralized home directories, DHCP server, web proxy and many other
services.  The desktop contains more than 60 educational software
packages[3] and more are available from the Debian archive, and
schools can choose between KDE, Gnome, LXDE, Xfce and MATE desktop
environment.

 [2] &amp;lt;URL: &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;http://www.skolelinux.org/&lt;/a&gt; &amp;gt;
 [3] &amp;lt;URL: &lt;a href=&quot;http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html&quot;&gt;http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html&lt;/a&gt; &amp;gt;

Full release notes and manual
=============================

Below the download URLs there is a list of some of the new features
and bugfixes of Debian Edu 8.0+edu0~alpha0 Codename Jessie. The full
list is part of the manual. (See the feature list in the manual[4] for
the English version.) For some languages manual translations are
available, see the manual translation overview[5].

 [4] &amp;lt;URL: &lt;a href=&quot;https://wiki.debian.org/DebianEdu/Documentation/Jessie/Features&quot;&gt;https://wiki.debian.org/DebianEdu/Documentation/Jessie/Features&lt;/a&gt; &amp;gt;
 [5] &amp;lt;URL: &lt;a href=&quot;http://maintainer.skolelinux.org/debian-edu-doc/&quot;&gt;http://maintainer.skolelinux.org/debian-edu-doc/&lt;/a&gt; &amp;gt;

Where to get it
---------------

To download the multiarch netinstall CD release (624 MiB) you can use

 * &lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso&lt;/a&gt;
 * &lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso&lt;/a&gt;
 * rsync -avzP ftp.skolelinux.org::skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso .

The SHA1SUM of this image is: 361188818e036ce67280a572f757de82ebfeb095

New features for Debian Edu 8.0+edu0~alpha0 Codename Jessie released 2014-10-27
===============================================================================


Installation changes
--------------------

 * PXE installation now installs firmware automatically for the hardware present.

Software updates
----------------

Everything which is new in Debian Jessie 8.0, eg:

 * Linux kernel 3.16.x
 * Desktop environments KDE &quot;Plasma&quot; 4.11.12, GNOME 3.14, Xfce 4.10,
   LXDE 0.5.6 and MATE 1.8 (KDE &quot;Plasma&quot; is installed by default; to
   choose one of the others see manual.)
 * the browsers Iceweasel 31 ESR and Chromium 38 
 * !LibreOffice 4.3.3
 * GOsa 2.7.4
 * LTSP 5.5.4
 * CUPS print system 1.7.5
 * new boot framework: systemd
 * Educational toolbox GCompris 14.07 
 * Music creator Rosegarden 14.02
 * Image editor Gimp 2.8.14
 * Virtual stargazer Stellarium 0.13.0
 * golearn 0.9
 * tuxpaint 0.9.22
 * New version of debian-installer from Debian Jessie.
 * Debian Jessie includes about 42000 packages available for
   installation.
 * More information about Debian Jessie 8.0 is provided in the release
   notes[6] and the installation manual[7].

 [6] &amp;lt;URL: &lt;a href=&quot;http://www.debian.org/releases/jessie/releasenotes&quot;&gt;http://www.debian.org/releases/jessie/releasenotes&lt;/a&gt; &amp;gt;
 [7] &amp;lt;URL: &lt;a href=&quot;http://www.debian.org/releases/jessie/installmanual&quot;&gt;http://www.debian.org/releases/jessie/installmanual&lt;/a&gt; &amp;gt;

Fixed bugs
----------

 * Inserting incorrect DNS information in Gosa will no longer break
   DNS completely, but instead stop DNS updates until the incorrect
   information is corrected (Debian bug #710362)
 * and many others.

Documentation and translation updates
------------------------------------- 

 * The Debian Edu Jessie Manual is fully translated to German, French,
   Italian, Danish and Dutch. Partly translated versions exist for
   Norwegian Bokmal and Spanish.

Other changes
-------------

 * Due to new Squid settings, powering off or rebooting the main
   server takes more time.
 * To manage printers localhost:631 has to be used, currently www:631
   doesn&#39;t work.

Regressions / known problems
----------------------------

 * Installing LTSP chroot fails with a bug related to eatmydata about
   exim4-config failing to run its postinst (see Debian bug #765694
   and Debian bug #762103).
 * Munin collection is not properly configured on clients (Debian bug
   #764594).  The fix is available in a newer version of munin-node.
 * PXE setup for Main Server and Thin Client Server setup does not
   work when installing on a machine without direct Internet access.
   Will be fixed when Debian bug #766960 is fixed in Jessie.

See the status page[8] for the complete list.

 [8] &amp;lt;URL: &lt;a href=&quot;https://wiki.debian.org/DebianEdu/Status/Jessie&quot;&gt;https://wiki.debian.org/DebianEdu/Status/Jessie&lt;/a&gt; &amp;gt;

How to report bugs
------------------

&amp;lt;URL: &lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&quot;&gt;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&lt;/a&gt; &amp;gt;

About Debian
============

The Debian Project was founded in 1993 by Ian Murdock to be a truly
free community project. Since then the project has grown to be one of
the largest and most influential open source projects. Thousands of
volunteers from all over the world work together to create and
maintain Debian software. Available in 70 languages, and supporting a
huge range of computer types, Debian calls itself the universal
operating system.

Contact Information
For further information, please visit the Debian web pages[9] or send
mail to press@debian.org.

 [9] &amp;lt;URL: &lt;a href=&quot;http://www.debian.org/&quot;&gt;http://www.debian.org/&lt;/a&gt; &amp;gt;
&lt;/pre&gt;
</description>
        </item>
        
        <item>
                <title>I spent last weekend recording MakerCon Nordic</title>
                <link>http://people.skolelinux.org/pere/blog/I_spent_last_weekend_recording_MakerCon_Nordic.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/I_spent_last_weekend_recording_MakerCon_Nordic.html</guid>
                <pubDate>Thu, 23 Oct 2014 23:00:00 +0200</pubDate>
                <description>&lt;p&gt;I spent last weekend at &lt;a href=&quot;http://www.makercon.no/&quot;&gt;Makercon
Nordic&lt;/a&gt;, a great conference and workshop for makers in Norway and
the surrounding countries.  I had volunteered on behalf of the
Norwegian Unix Users Group (NUUG) to video record the talks, and we
had a great and exhausting time recording the entire day, two days in
a row.  There were only two of us, Hans-Petter and me, and we used the
regular video equipment for NUUG, with a
&lt;a href=&quot;http://dvswitch.alioth.debian.org/wiki/&quot;&gt;dvswitch&lt;/a&gt;, a
camera and a VGA to DV convert box, and mixed video and slides
live.&lt;/p&gt;

&lt;p&gt;Hans-Petter did the post-processing, consisting of uploading the
around 180 GiB of raw video to Youtube, and the result is
&lt;a href=&quot;https://www.youtube.com/user/MakerConNordic/&quot;&gt;now becoming
public&lt;/a&gt; on the MakerConNordic account.  The videos have the license
NUUG always use on our recordings, which is
&lt;a href=&quot;http://creativecommons.org/licenses/by-sa/3.0/no/&quot;&gt;Creative
Commons Navngivelse-Del på samme vilkår 3.0 Norge&lt;/a&gt;.  Many great
talks available.  Check it out! :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>listadmin, the quick way to moderate mailman lists - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/listadmin__the_quick_way_to_moderate_mailman_lists___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/listadmin__the_quick_way_to_moderate_mailman_lists___nice_free_software.html</guid>
                <pubDate>Wed, 22 Oct 2014 20:00:00 +0200</pubDate>
                <description>&lt;p&gt;If you ever had to moderate a mailman list, like the ones on
alioth.debian.org, you know the web interface is fairly slow to
operate.  First you visit one web page, enter the moderation password
and get a new page shown with a list of all the messages to moderate
and various options for each email address.  This take a while for
every list you moderate, and you need to do it regularly to do a good
job as a list moderator.  But there is a quick alternative,
&lt;a href=&quot;http://heim.ifi.uio.no/kjetilho/hacks/#listadmin&quot;&gt;the
listadmin program&lt;/a&gt;.  It allow you to check lists for new messages
to moderate in a fraction of a second.  Here is a test run on two
lists I recently took over:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
% time listadmin xiph
fetching data for pkg-xiph-commits@lists.alioth.debian.org ... nothing in queue
fetching data for pkg-xiph-maint@lists.alioth.debian.org ... nothing in queue

real    0m1.709s
user    0m0.232s
sys     0m0.012s
%
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;In 1.7 seconds I had checked two mailing lists and confirmed that
there are no message in the moderation queue.  Every morning I
currently moderate 68 mailman lists, and it normally take around two
minutes.  When I took over the two pkg-xiph lists above a few days
ago, there were 400 emails waiting in the moderator queue.  It took me
less than 15 minutes to process them all using the listadmin
program.&lt;/p&gt;

&lt;p&gt;If you install
&lt;a href=&quot;https://tracker.debian.org/pkg/listadmin&quot;&gt;the listadmin
package&lt;/a&gt; from Debian and create a file &lt;tt&gt;~/.listadmin.ini&lt;/tt&gt;
with content like this, the moderation task is a breeze:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
username username@example.org
spamlevel 23
default discard
discard_if_reason &quot;Posting restricted to members only. Remove us from your mail list.&quot;

password secret
adminurl https://{domain}/mailman/admindb/{list}
mailman-list@lists.example.com

password hidden
other-list@otherserver.example.org
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;There are other options to set as well.  Check the manual page to
learn the details.&lt;/p&gt;

&lt;p&gt;If you are forced to moderate lists on a mailman installation where
the SSL certificate is self signed or not properly signed by a
generally accepted signing authority, you can set a environment
variable when calling listadmin to disable SSL verification:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
PERL_LWP_SSL_VERIFY_HOSTNAME=0 listadmin
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;If you want to moderate a subset of the lists you take care of, you
can provide an argument to the listadmin script like I do in the
initial screen dump (the xiph argument).  Using an argument, only
lists matching the argument string will be processed.  This make it
quick to accept messages if you notice the moderation request in your
email.&lt;/p&gt;

&lt;p&gt;Without the listadmin program, I would never be the moderator of 68
mailing lists, as I simply do not have time to spend on that if the
process was any slower. The listadmin program have saved me hours of
time I could spend elsewhere over the years.  It truly is nice free
software.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;

&lt;p&gt;Update 2014-10-27: Added missing &#39;username&#39; statement in
configuration example.  Also, I&#39;ve been told that the
PERL_LWP_SSL_VERIFY_HOSTNAME=0 setting do not work for everyone.  Not
sure why.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Jessie, PXE and automatic firmware installation</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Jessie__PXE_and_automatic_firmware_installation.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Jessie__PXE_and_automatic_firmware_installation.html</guid>
                <pubDate>Fri, 17 Oct 2014 14:10:00 +0200</pubDate>
                <description>&lt;p&gt;When PXE installing laptops with Debian, I often run into the
problem that the WiFi card require some firmware to work properly.
And it has been a pain to fix this using preseeding in Debian.
Normally something more is needed.  But thanks to
&lt;a href=&quot;https://packages.qa.debian.org/i/isenkram.html&quot;&gt;my isenkram
package&lt;/a&gt; and its recent tasksel extension, it has now become easy
to do this using simple preseeding.&lt;/p&gt;

&lt;p&gt;The isenkram-cli package provide tasksel tasks which will install
firmware for the hardware found in the machine (actually, requested by
the kernel modules for the hardware).  (It can also install user space
programs supporting the hardware detected, but that is not the focus
of this story.)&lt;/p&gt;

&lt;p&gt;To get this working in the default installation, two preeseding
values are needed.  First, the isenkram-cli package must be installed
into the target chroot (aka the hard drive) before tasksel is executed
in the pkgsel step of the debian-installer system.  This is done by
preseeding the base-installer/includes debconf value to include the
isenkram-cli package.  The package name is next passed to debootstrap
for installation.  With the isenkram-cli package in place, tasksel
will automatically use the isenkram tasks to detect hardware specific
packages for the machine being installed and install them, because
isenkram-cli contain tasksel tasks.&lt;/p&gt;

&lt;p&gt;Second, one need to enable the non-free APT repository, because
most firmware unfortunately is non-free.  This is done by preseeding
the apt-mirror-setup step.  This is unfortunate, but for a lot of
hardware it is the only option in Debian.&lt;/p&gt;

&lt;p&gt;The end result is two lines needed in your preseeding file to get
firmware installed automatically by the installer:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
base-installer base-installer/includes string isenkram-cli
apt-mirror-setup apt-setup/non-free boolean true
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The current version of isenkram-cli in testing/jessie will install
both firmware and user space packages when using this method.  It also
do not work well, so use version 0.15 or later.  Installing both
firmware and user space packages might give you a bit more than you
want, so I decided to split the tasksel task in two, one for firmware
and one for user space programs.  The firmware task is enabled by
default, while the one for user space programs is not.  This split is
implemented in the package currently in unstable.&lt;/p&gt;

&lt;p&gt;If you decide to give this a go, please let me know (via email) how
this recipe work for you. :)&lt;/p&gt;

&lt;p&gt;So, I bet you are wondering, how can this work.  First and
foremost, it work because tasksel is modular, and driven by whatever
files it find in /usr/lib/tasksel/ and /usr/share/tasksel/.  So the
isenkram-cli package place two files for tasksel to find.  First there
is the task description file (/usr/share/tasksel/descs/isenkram.desc):&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
Task: isenkram-packages
Section: hardware
Description: Hardware specific packages (autodetected by isenkram)
 Based on the detected hardware various hardware specific packages are
 proposed.
Test-new-install: show show
Relevance: 8
Packages: for-current-hardware

Task: isenkram-firmware
Section: hardware
Description: Hardware specific firmware packages (autodetected by isenkram)
 Based on the detected hardware various hardware specific firmware
 packages are proposed.
Test-new-install: mark show
Relevance: 8
Packages: for-current-hardware-firmware
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The key parts are Test-new-install which indicate how the task
should be handled and the Packages line referencing to a script in
/usr/lib/tasksel/packages/.  The scripts use other scripts to get a
list of packages to install.  The for-current-hardware-firmware script
look like this to list relevant firmware for the machine:

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
#
PATH=/usr/sbin:$PATH
export PATH
isenkram-autoinstall-firmware -l
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;With those two pieces in place, the firmware is installed by
tasksel during the normal d-i run. :)&lt;/p&gt;

&lt;p&gt;If you want to test what tasksel will install when isenkram-cli is
installed, run &lt;tt&gt;DEBIAN_PRIORITY=critical tasksel --test
--new-install&lt;/tt&gt; to get the list of packages that tasksel would
install.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://wiki.debian.org/DebianEdu/&quot;&gt;Debian Edu&lt;/a&gt; will be
pilots in testing this feature, as isenkram is used there now to
install firmware, replacing the earlier scripts.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Ubuntu used to show the bread prizes at ICA Storo</title>
                <link>http://people.skolelinux.org/pere/blog/Ubuntu_used_to_show_the_bread_prizes_at_ICA_Storo.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Ubuntu_used_to_show_the_bread_prizes_at_ICA_Storo.html</guid>
                <pubDate>Sat, 4 Oct 2014 15:20:00 +0200</pubDate>
                <description>&lt;p&gt;Today I came across an unexpected Ubuntu boot screen.  Above the
bread shelf on the ICA shop at Storo in Oslo, the grub menu of Ubuntu
with Linux kernel 3.2.0-23 (ie probably version 12.04 LTS) was stuck
on a screen normally showing the bread types and prizes:&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;img width=&quot;70%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2014-10-04-ubuntu-ica-storo-crop.jpeg&quot;&gt;&lt;/p&gt;

&lt;p&gt;If it had booted as it was supposed to, I would never had known
about this hidden Linux installation.  It is interesting what
&lt;a href=&quot;http://revealingerrors.com/&quot;&gt;errors can reveal&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>New lsdvd release version 0.17 is ready</title>
                <link>http://people.skolelinux.org/pere/blog/New_lsdvd_release_version_0_17_is_ready.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/New_lsdvd_release_version_0_17_is_ready.html</guid>
                <pubDate>Sat, 4 Oct 2014 08:40:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;https://sourceforge.net/p/lsdvd/&quot;&gt;lsdvd project&lt;/a&gt;
got a new set of developers a few weeks ago, after the original
developer decided to step down and pass the project to fresh blood.
This project is now maintained by Petter Reinholdtsen and Steve
Dibb.&lt;/p&gt;

&lt;p&gt;I just wrapped up
&lt;a href=&quot;https://sourceforge.net/p/lsdvd/mailman/message/32896061/&quot;&gt;a
new lsdvd release&lt;/a&gt;, available in git or from
&lt;a href=&quot;https://sourceforge.net/projects/lsdvd/files/lsdvd/&quot;&gt;the
download page&lt;/a&gt;.  This is the changelog dated 2014-10-03 for version
0.17.&lt;/p&gt;

&lt;ul&gt;

 &lt;li&gt;Ignore &#39;phantom&#39; audio, subtitle tracks&lt;/li&gt;
 &lt;li&gt;Check for garbage in the program chains, which indicate that a track is
   non-existant, to work around additional copy protection&lt;/li&gt;
 &lt;li&gt;Fix displaying content type for audio tracks, subtitles&lt;/li&gt;
 &lt;li&gt;Fix pallete display of first entry&lt;/li&gt;
 &lt;li&gt;Fix include orders&lt;/li&gt;
 &lt;li&gt;Ignore read errors in titles that would not be displayed anyway&lt;/li&gt;
 &lt;li&gt;Fix the chapter count&lt;/li&gt;
 &lt;li&gt;Make sure the array size and the array limit used when initialising
   the palette size is the same.&lt;/li&gt;
 &lt;li&gt;Fix array printing.&lt;/li&gt;
 &lt;li&gt;Correct subsecond calculations.&lt;/li&gt;
 &lt;li&gt;Add sector information to the output format.&lt;/li&gt;
 &lt;li&gt;Clean up code to be closer to ANSI C and compile without warnings
   with more GCC compiler warnings.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;This change bring together patches for lsdvd in use in various
Linux and Unix distributions, as well as patches submitted to the
project the last nine years.  Please check it out. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to test Debian Edu Jessie despite some fatal problems with the installer</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_test_Debian_Edu_Jessie_despite_some_fatal_problems_with_the_installer.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_test_Debian_Edu_Jessie_despite_some_fatal_problems_with_the_installer.html</guid>
                <pubDate>Fri, 26 Sep 2014 12:20:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux
project&lt;/a&gt; provide a Linux solution for schools, including a
powerful desktop with education software, a central server providing
web pages, user database, user home directories, central login and PXE
boot of both  clients without disk and the installation to install Debian
Edu on machines with disk (and a few other services perhaps to small
to mention here).  We in the Debian Edu team are currently working on
the Jessie based version, trying to get everything in shape before the
freeze, to avoid having to maintain our own package repository in the
future.  The
&lt;a href=&quot;https://wiki.debian.org/DebianEdu/Status/Jessie&quot;&gt;current
status&lt;/a&gt; can be seen on the Debian wiki, and there is still heaps of
work left.  Some fatal problems block testing, breaking the installer,
but it is possible to work around these to get anyway.  Here is a
recipe on how to get the installation limping along.&lt;/p&gt;

&lt;p&gt;First, download the test ISO via
&lt;a href=&quot;ftp://ftp.skolelinux.no/cd-edu-testing-nolocal-netinst/debian-edu-amd64-i386-NETINST-1.iso&quot;&gt;ftp&lt;/a&gt;,
&lt;a href=&quot;http://ftp.skolelinux.no/cd-edu-testing-nolocal-netinst/debian-edu-amd64-i386-NETINST-1.iso&quot;&gt;http&lt;/a&gt;
or rsync (use
ftp.skolelinux.org::cd-edu-testing-nolocal-netinst/debian-edu-amd64-i386-NETINST-1.iso).
The ISO build was broken on Tuesday, so we do not get a new ISO every
12 hours or so, but thankfully the ISO we already got we are able to
install with some tweaking.&lt;/p&gt;

&lt;p&gt;When you get to the Debian Edu profile question, go to tty2
(use Alt-Ctrl-F2), run&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
nano /usr/bin/edu-eatmydata-install
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;and add &#39;exit 0&#39; as the second line, disabling the eatmydata
optimization.  Return to the installation, select the profile you want
and continue.  Without this change, exim4-config will fail to install
due to a known bug in eatmydata.&lt;/p&gt;

&lt;p&gt;When you get the grub question at the end, answer /dev/sda (or if
this do not work, figure out what your correct value would be.  All my
test machines need /dev/sda, so I have no advice if it do not fit
your need.&lt;/p&gt;

&lt;p&gt;If you installed a profile including a graphical desktop, log in as
root after the initial boot from hard drive, and install the
education-desktop-XXX metapackage.  XXX can be kde, gnome, lxde, xfce
or mate.  If you want several desktop options, install more than one
metapackage.  Once this is done, reboot and you should have a working
graphical login screen.  This workaround should no longer be needed
once the education-tasks package version 1.801 enter testing in two
days.&lt;/p&gt;

&lt;p&gt;I believe the ISO build will start working on two days when the new
tasksel package enter testing and Steve McIntyre get a chance to
update the debian-cd git repository.  The eatmydata, grub and desktop
issues are already fixed in unstable and testing, and should show up
on the ISO as soon as the ISO build start working again.  Well the
eatmydata optimization is really just disabled.  The proper fix
require an upload by the eatmydata maintainer applying the patch
provided in bug &lt;a href=&quot;https://bugs.debian.org/702711&quot;&gt;#702711&lt;/a&gt;.
The rest have proper fixes in unstable.&lt;/p&gt;

&lt;p&gt;I hope this get you going with the installation testing, as we are
quickly running out of time trying to get our Jessie based
installation ready before the distribution freeze in a month.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Suddenly I am the new upstream of the lsdvd command line tool</title>
                <link>http://people.skolelinux.org/pere/blog/Suddenly_I_am_the_new_upstream_of_the_lsdvd_command_line_tool.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Suddenly_I_am_the_new_upstream_of_the_lsdvd_command_line_tool.html</guid>
                <pubDate>Thu, 25 Sep 2014 11:20:00 +0200</pubDate>
                <description>&lt;p&gt;I use the &lt;a href=&quot;https://sourceforge.net/p/lsdvd/&quot;&gt;lsdvd tool&lt;/a&gt;
to handle my fairly large DVD collection.  It is a nice command line
tool to get details about a DVD, like title, tracks, track length,
etc, in XML, Perl or human readable format.  But lsdvd have not seen
any new development since 2006 and had a few irritating bugs affecting
its use with some DVDs.  Upstream seemed to be dead, and in January I
sent a small probe asking for a version control repository for the
project, without any reply.  But I use it regularly and would like to
get &lt;a href=&quot;https://packages.qa.debian.org/lsdvd&quot;&gt;an updated version
into Debian&lt;/a&gt;.  So two weeks ago I tried harder to get in touch with
the project admin, and after getting a reply from him explaining that
he was no longer interested in the project, I asked if I could take
over.  And yesterday, I became project admin.&lt;/p&gt;

&lt;p&gt;I&#39;ve been in touch with a Gentoo developer and the Debian
maintainer interested in joining forces to maintain the upstream
project, and I hope we can get a new release out fairly quickly,
collecting the patches spread around on the internet into on place.
I&#39;ve added the relevant Debian patches to the freshly created git
repository, and expect the Gentoo patches to make it too.  If you got
a DVD collection and care about command line tools, check out
&lt;a href=&quot;https://sourceforge.net/p/lsdvd/git/ci/master/tree/&quot;&gt;the git source&lt;/a&gt; and join
&lt;a href=&quot;https://sourceforge.net/p/lsdvd/mailman/&quot;&gt;the project mailing
list&lt;/a&gt;. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Speeding up the Debian installer using eatmydata and dpkg-divert</title>
                <link>http://people.skolelinux.org/pere/blog/Speeding_up_the_Debian_installer_using_eatmydata_and_dpkg_divert.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Speeding_up_the_Debian_installer_using_eatmydata_and_dpkg_divert.html</guid>
                <pubDate>Tue, 16 Sep 2014 14:00:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;https://www.debian.org/&quot;&gt;Debian&lt;/a&gt; installer could be
a lot quicker.  When we install more than 2000 packages in
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux / Debian Edu&lt;/a&gt; using
tasksel in the installer, unpacking the binary packages take forever.
A part of the slow I/O issue was discussed in
&lt;a href=&quot;https://bugs.debian.org/613428&quot;&gt;bug #613428&lt;/a&gt; about too
much file system sync-ing done by dpkg, which is the package
responsible for unpacking the binary packages.  Other parts (like code
executed by postinst scripts) might also sync to disk during
installation.  All this sync-ing to disk do not really make sense to
me.  If the machine crash half-way through, I start over, I do not try
to salvage the half installed system.  So the failure sync-ing is
supposed to protect against, hardware or system crash, is not really
relevant while the installer is running.&lt;/p&gt;

&lt;p&gt;A few days ago, I thought of a way to get rid of all the file
system sync()-ing in a fairly non-intrusive way, without the need to
change the code in several packages.  The idea is not new, but I have
not heard anyone propose the approach using dpkg-divert before.  It
depend on the small and clever package
&lt;a href=&quot;https://packages.qa.debian.org/eatmydata&quot;&gt;eatmydata&lt;/a&gt;, which
uses LD_PRELOAD to replace the system functions for syncing data to
disk with functions doing nothing, thus allowing programs to live
dangerous while speeding up disk I/O significantly.  Instead of
modifying the implementation of dpkg, apt and tasksel (which are the
packages responsible for selecting, fetching and installing packages),
it occurred to me that we could just divert the programs away, replace
them with a simple shell wrapper calling
&quot;eatmydata&amp;nbsp;$program&amp;nbsp;$@&quot;, to get the same effect.
Two days ago I decided to test the idea, and wrapped up a simple
implementation for the Debian Edu udeb.&lt;/p&gt;

&lt;p&gt;The effect was stunning.  In my first test it reduced the running
time of the pkgsel step (installing tasks) from 64 to less than 44
minutes (20 minutes shaved off the installation) on an old Dell
Latitude D505 machine.  I am not quite sure what the optimised time
would have been, as I messed up the testing a bit, causing the debconf
priority to get low enough for two questions to pop up during
installation.  As soon as I saw the questions I moved the installation
along, but do not know how long the question were holding up the
installation.  I did some more measurements using Debian Edu Jessie,
and got these results.  The time measured is the time stamp in
/var/log/syslog between the &quot;pkgsel: starting tasksel&quot; and the
&quot;pkgsel: finishing up&quot; lines, if you want to do the same measurement
yourself.  In Debian Edu, the tasksel dialog do not show up, and the
timing thus do not depend on how quickly the user handle the tasksel
dialog.&lt;/p&gt;

&lt;p&gt;&lt;table&gt;

&lt;tr&gt;
&lt;th&gt;Machine/setup&lt;/th&gt;
&lt;th&gt;Original tasksel&lt;/th&gt;
&lt;th&gt;Optimised tasksel&lt;/th&gt;
&lt;th&gt;Reduction&lt;/th&gt;
&lt;/tr&gt;

&lt;tr&gt;
&lt;td&gt;Latitude D505 Main+LTSP LXDE&lt;/td&gt;
&lt;td&gt;64 min (07:46-08:50)&lt;/td&gt;
&lt;td&gt;&lt;44 min (11:27-12:11)&lt;/td&gt;
&lt;td&gt;&gt;20 min 18%&lt;/td&gt;
&lt;/tr&gt;

&lt;tr&gt;
&lt;td&gt;Latitude D505 Roaming LXDE&lt;/td&gt;
&lt;td&gt;57 min (08:48-09:45)&lt;/td&gt;
&lt;td&gt;34 min (07:43-08:17)&lt;/td&gt;
&lt;td&gt;23 min 40%&lt;/td&gt;
&lt;/tr&gt;

&lt;tr&gt;
&lt;td&gt;Latitude D505 Minimal&lt;/td&gt;
&lt;td&gt;22 min (10:37-10:59)&lt;/td&gt;
&lt;td&gt;11 min (11:16-11:27)&lt;/td&gt;
&lt;td&gt;11 min 50%&lt;/td&gt;
&lt;/tr&gt;

&lt;tr&gt;
&lt;td&gt;Thinkpad X200 Minimal&lt;/td&gt;
&lt;td&gt;6 min (08:19-08:25)&lt;/td&gt;
&lt;td&gt;4 min (08:04-08:08)&lt;/td&gt;
&lt;td&gt;2 min 33%&lt;/td&gt;
&lt;/tr&gt;

&lt;tr&gt;
&lt;td&gt;Thinkpad X200 Roaming KDE&lt;/td&gt;
&lt;td&gt;19 min (09:21-09:40)&lt;/td&gt;
&lt;td&gt;15 min (10:25-10:40)&lt;/td&gt;
&lt;td&gt;4 min 21%&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;&lt;/p&gt;

&lt;p&gt;The test is done using a netinst ISO on a USB stick, so some of the
time is spent downloading packages.  The connection to the Internet
was 100Mbit/s during testing, so downloading should not be a
significant factor in the measurement.  Download typically took a few
seconds to a few minutes, depending on the amount of packages being
installed.&lt;/p&gt;

&lt;p&gt;The speedup is implemented by using two hooks in
&lt;a href=&quot;https://www.debian.org/devel/debian-installer/&quot;&gt;Debian
Installer&lt;/a&gt;, the pre-pkgsel.d hook to set up the diverts, and the
finish-install.d hook to remove the divert at the end of the
installation.  I picked the pre-pkgsel.d hook instead of the
post-base-installer.d hook because I test using an ISO without the
eatmydata package included, and the post-base-installer.d hook in
Debian Edu can only operate on packages included in the ISO.  The
negative effect of this is that I am unable to activate this
optimization for the kernel installation step in d-i.  If the code is
moved to the post-base-installer.d hook, the speedup would be larger
for the entire installation.&lt;/p&gt;

&lt;p&gt;I&#39;ve implemented this in the
&lt;a href=&quot;https://packages.qa.debian.org/debian-edu-install&quot;&gt;debian-edu-install&lt;/a&gt;
git repository, and plan to provide the optimization as part of the
Debian Edu installation.  If you want to test this yourself, you can
create two files in the installer (or in an udeb).  One shell script
need do go into /usr/lib/pre-pkgsel.d/, with content like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
set -e
. /usr/share/debconf/confmodule
info() {
    logger -t my-pkgsel &quot;info: $*&quot;
}
error() {
    logger -t my-pkgsel &quot;error: $*&quot;
}
override_install() {
    apt-install eatmydata || true
    if [ -x /target/usr/bin/eatmydata ] ; then
        for bin in dpkg apt-get aptitude tasksel ; do
            file=/usr/bin/$bin
            # Test that the file exist and have not been diverted already.
            if [ -f /target$file ] ; then
                info &quot;diverting $file using eatmydata&quot;
                printf &quot;#!/bin/sh\neatmydata $bin.distrib \&quot;\$@\&quot;\n&quot; \
                    &gt; /target$file.edu
                chmod 755 /target$file.edu
                in-target dpkg-divert --package debian-edu-config \
                    --rename --quiet --add $file
                ln -sf ./$bin.edu /target$file
            else
                error &quot;unable to divert $file, as it is missing.&quot;
            fi
        done
    else
        error &quot;unable to find /usr/bin/eatmydata after installing the eatmydata pacage&quot;
    fi
}

override_install
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;To clean up, another shell script should go into
/usr/lib/finish-install.d/ with code like this:

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
#! /bin/sh -e
. /usr/share/debconf/confmodule
error() {
    logger -t my-finish-install &quot;error: $@&quot;
}
remove_install_override() {
    for bin in dpkg apt-get aptitude tasksel ; do
        file=/usr/bin/$bin
        if [ -x /target$file.edu ] ; then
            rm /target$file
            in-target dpkg-divert --package debian-edu-config \
                --rename --quiet --remove $file
            rm /target$file.edu
        else
            error &quot;Missing divert for $file.&quot;
        fi
    done
    sync # Flush file buffers before continuing
}

remove_install_override
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;In Debian Edu, I placed both code fragments in a separate script
edu-eatmydata-install and call it from the pre-pkgsel.d and
finish-install.d scripts.&lt;/p&gt;

&lt;p&gt;By now you might ask if this change should get into the normal
Debian installer too?  I suspect it should, but am not sure the
current debian-installer coordinators find it useful enough.  It also
depend on the side effects of the change.  I&#39;m not aware of any, but I
guess we will see if the change is safe after some more testing.
Perhaps there is some package in Debian depending on sync() and
fsync() having effect?  Perhaps it should go into its own udeb, to
allow those of us wanting to enable it to do so without affecting
everyone.&lt;/p&gt;

&lt;p&gt;Update 2014-09-24: Since a few days ago, enabling this optimization
will break installation of all programs using gnutls because of
&lt;a href=&quot;https://bugs.debian.org/702711&quot;&gt;bug #702711&lt;/a&gt;.  An updated
eatmydata package in Debian will solve it.&lt;/p&gt;

&lt;p&gt;Update 2014-10-17: The bug mentioned above is fixed in testing and
the optimization work again.  And I have discovered that the
dpkg-divert trick is not really needed and implemented a slightly
simpler approach as part of the debian-edu-install package.  See
tools/edu-eatmydata-install in the source package.&lt;/p&gt;

&lt;p&gt;Update 2014-11-11: Unfortunately, a new
&lt;a href=&quot;http://bugs.debian.org/765738&quot;&gt;bug #765738&lt;/a&gt; in eatmydata only
triggering on i386 made it into testing, and broke this installation
optimization again.  If &lt;a href=&quot;http://bugs.debian.org/768893&quot;&gt;unblock
request 768893&lt;/a&gt; is accepted, it should be working again.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Good bye subkeys.pgp.net, welcome pool.sks-keyservers.net</title>
                <link>http://people.skolelinux.org/pere/blog/Good_bye_subkeys_pgp_net__welcome_pool_sks_keyservers_net.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Good_bye_subkeys_pgp_net__welcome_pool_sks_keyservers_net.html</guid>
                <pubDate>Wed, 10 Sep 2014 13:10:00 +0200</pubDate>
                <description>&lt;p&gt;Yesterday, I had the pleasure of attending a talk with the
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;Norwegian Unix User Group&lt;/a&gt; about
&lt;a href=&quot;http://www.nuug.no/aktiviteter/20140909-sks-keyservers/&quot;&gt;the
OpenPGP keyserver pool sks-keyservers.net&lt;/a&gt;, and was very happy to
learn that there is a large set of publicly available key servers to
use when looking for peoples public key.  So far I have used
subkeys.pgp.net, and some times wwwkeys.nl.pgp.net when the former
were misbehaving, but those days are ended.  The servers I have used
up until yesterday have been slow and some times unavailable.  I hope
those problems are gone now.&lt;/p&gt;

&lt;p&gt;Behind the round robin DNS entry of the
&lt;a href=&quot;https://sks-keyservers.net/&quot;&gt;sks-keyservers.net&lt;/a&gt; service
there is a pool of more than 100 keyservers which are checked every
day to ensure they are well connected and up to date.  It must be
better than what I have used so far. :)&lt;/p&gt;

&lt;p&gt;Yesterdays speaker told me that the service is the default
keyserver provided by the default configuration in GnuPG, but this do
not seem to be used in Debian.  Perhaps it should?&lt;/p&gt;

&lt;p&gt;Anyway, I&#39;ve updated my ~/.gnupg/options file to now include this
line:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
keyserver pool.sks-keyservers.net
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;With GnuPG version 2 one can also locate the keyserver using SRV
entries in DNS.  Just for fun, I did just that at work, so now every
user of GnuPG at the University of Oslo should find a OpenGPG
keyserver automatically should their need it:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
% host -t srv _pgpkey-http._tcp.uio.no
_pgpkey-http._tcp.uio.no has SRV record 0 100 11371 pool.sks-keyservers.net.
%
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Now if only
&lt;a href=&quot;http://ietfreport.isoc.org/idref/draft-shaw-openpgp-hkp/&quot;&gt;the
HKP lookup protocol&lt;/a&gt; supported finding signature paths, I would be
very happy.  It can look up a given key or search for a user ID, but I
normally do not want that, but to find a trust path from my key to
another key.  Given a user ID or key ID, I would like to find (and
download) the keys representing a signature path from my key to the
key in question, to be able to get a trust path between the two keys.
This is as far as I can tell not possible today.  Perhaps something
for a future version of the protocol?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Do you need an agreement with MPEG-LA to publish and broadcast H.264 video in Norway?</title>
                <link>http://people.skolelinux.org/pere/blog/Do_you_need_an_agreement_with_MPEG_LA_to_publish_and_broadcast_H_264_video_in_Norway_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Do_you_need_an_agreement_with_MPEG_LA_to_publish_and_broadcast_H_264_video_in_Norway_.html</guid>
                <pubDate>Mon, 25 Aug 2014 22:10:00 +0200</pubDate>
                <description>&lt;p&gt;Two years later, I am still not sure if it is legal here in Norway
to use or publish a video in H.264 or MPEG4 format edited by the
commercially licensed video editors, without limiting the use to
create &quot;personal&quot; or &quot;non-commercial&quot; videos or get a license
agreement with &lt;a href=&quot;http://www.mpegla.com&quot;&gt;MPEG LA&lt;/a&gt;.  If one
want to publish and broadcast video in a non-personal or commercial
setting, it might be that those tools can not be used, or that video
format can not be used, without breaking their copyright license.  I
am not sure.
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Trenger_en_avtale_med_MPEG_LA_for___publisere_og_kringkaste_H_264_video_.html&quot;&gt;Back
then&lt;/a&gt;, I found that the copyright license terms for Adobe Premiere
and Apple Final Cut Pro both specified that one could not use the
program to produce anything else without a patent license from MPEG
LA.  The issue is not limited to those two products, though.  Other
much used products like those from Avid and Sorenson Media have terms
of use are similar to those from Adobe and Apple.  The complicating
factor making me unsure if those terms have effect in Norway or not is
that the patents in question are not valid in Norway, but copyright
licenses are.&lt;/p&gt;

&lt;p&gt;These are the terms for Avid Artist Suite, according to their
&lt;a href=&quot;http://www.avid.com/US/about-avid/legal-notices/legal-enduserlicense2&quot;&gt;published
end user&lt;/a&gt;
&lt;a href=&quot;http://www.avid.com/static/resources/common/documents/corporate/LICENSE.pdf&quot;&gt;license
text&lt;/a&gt; (converted to lower case text for easier reading):&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
&lt;p&gt;18.2. MPEG-4. MPEG-4 technology may be included with the
software. MPEG LA, L.L.C. requires this notice: &lt;/p&gt;

&lt;p&gt;This product is licensed under the MPEG-4 visual patent portfolio
license for the personal and non-commercial use of a consumer for (i)
encoding video in compliance with the MPEG-4 visual standard (“MPEG-4
video”) and/or (ii) decoding MPEG-4 video that was encoded by a
consumer engaged in a personal and non-commercial activity and/or was
obtained from a video provider licensed by MPEG LA to provide MPEG-4
video.  No license is granted or shall be implied for any other
use. Additional information including that relating to promotional,
internal and commercial uses and licensing may be obtained from MPEG
LA, LLC.  See http://www.mpegla.com. This product is licensed under
the MPEG-4 systems patent portfolio license for encoding in compliance
with the MPEG-4 systems standard, except that an additional license
and payment of royalties are necessary for encoding in connection with
(i) data stored or replicated in physical media which is paid for on a
title by title basis and/or (ii) data which is paid for on a title by
title basis and is transmitted to an end user for permanent storage
and/or use, such additional license may be obtained from MPEG LA,
LLC. See http://www.mpegla.com for additional details.&lt;/p&gt;

&lt;p&gt;18.3. H.264/AVC. H.264/AVC technology may be included with the
software.  MPEG LA, L.L.C. requires this notice:&lt;/p&gt;

&lt;p&gt;This product is licensed under the AVC patent portfolio license for
the personal use of a consumer or other uses in which it does not
receive remuneration to (i) encode video in compliance with the AVC
standard (“AVC video”) and/or (ii) decode AVC video that was encoded
by a consumer engaged in a personal activity and/or was obtained from
a video provider licensed to provide AVC video. No license is granted
or shall be implied for any other use. Additional information may be
obtained from MPEG LA, L.L.C. See http://www.mpegla.com.&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Note the requirement that the videos created can only be used for
personal or non-commercial purposes.&lt;/p&gt;

&lt;p&gt;The Sorenson Media software have
&lt;a href=&quot;http://www.sorensonmedia.com/terms/&quot;&gt;similar terms&lt;/a&gt;:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;

&lt;p&gt;With respect to a license from Sorenson pertaining to MPEG-4 Video
Decoders and/or Encoders: Any such product is licensed under the
MPEG-4 visual patent portfolio license for the personal and
non-commercial use of a consumer for (i) encoding video in compliance
with the MPEG-4 visual standard (“MPEG-4 video”) and/or (ii) decoding
MPEG-4 video that was encoded by a consumer engaged in a personal and
non-commercial activity and/or was obtained from a video provider
licensed by MPEG LA to provide MPEG-4 video. No license is granted or
shall be implied for any other use. Additional information including
that relating to promotional, internal and commercial uses and
licensing may be obtained from MPEG LA, LLC. See
http://www.mpegla.com.&lt;/p&gt;

&lt;p&gt;With respect to a license from Sorenson pertaining to MPEG-4
Consumer Recorded Data Encoder, MPEG-4 Systems Internet Data Encoder,
MPEG-4 Mobile Data Encoder, and/or MPEG-4 Unique Use Encoder: Any such
product is licensed under the MPEG-4 systems patent portfolio license
for encoding in compliance with the MPEG-4 systems standard, except
that an additional license and payment of royalties are necessary for
encoding in connection with (i) data stored or replicated in physical
media which is paid for on a title by title basis and/or (ii) data
which is paid for on a title by title basis and is transmitted to an
end user for permanent storage and/or use. Such additional license may
be obtained from MPEG LA, LLC. See http://www.mpegla.com for
additional details.&lt;/p&gt;

&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Some free software like
&lt;a href=&quot;https://handbrake.fr/&quot;&gt;Handbrake&lt;/A&gt; and
&lt;a href=&quot;http://ffmpeg.org/&quot;&gt;FFMPEG&lt;/a&gt; uses GPL/LGPL licenses and do
not have any such terms included, so for those, there is no
requirement to limit the use to personal and non-commercial.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Bernd Zeitzen</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Bernd_Zeitzen.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Bernd_Zeitzen.html</guid>
                <pubDate>Thu, 31 Jul 2014 08:30:00 +0200</pubDate>
                <description>&lt;p&gt;The complete and free “out of the box” software solution for
schools, &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt;, is used quite a lot in Germany, and one of the people
involved is Bernd Zeitzen, who show up on the project mailing lists
from time to time with interesting questions and tips on how to adjust
the setup.  I managed to interview him this summer.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My name is Bernd Zeitzen and I&#39;m married with Hedda, a self
employed physiotherapist.  My former profession is tool maker, but I
haven&#39;t worked for 30 years in this job.  30 years ago I started to
support my wife and become her officeworker and a few years later the
administrator for a small computer network, today based on Ubuntu
Server (Samba, OpenVPN). For her daily work she has to use Windows
Desktops because the software she needs to organize her business only
works with Windows . :-(&lt;/p&gt;

&lt;p&gt;In 1988 we started with one PC and DOS, then I learned to use
Windows 98, 2000, XP, …, 8, Ubuntu, MacOSX.  Today we are running a
Linux server with 6 Windows clients and 10 persons (teacher of
children with special needs, speech therapist, occupational therapist,
psychologist and officeworkers) using our Samba shares via OpenVPN to
work with the documentations of our patients.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Two years ago a friend of mine asked me, if I want to get a job in
his school (&lt;a href=&quot;http://www.gymnasium-harsewinkel.de/&quot;&gt;Gymnasium
Harsewinkel&lt;/a&gt;).  They started with Skolelinux / Debian Edu and they
were looking for people to give support to the teachers using the
software and the network and teaching the pupils increasing their
computer skills in optional lessons.  I&#39;m spending 4-6 hours a week
with this job.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The independence.&lt;/p&gt;

&lt;p&gt;First: Every person is allowed to use, share and develop the
software. Even if you are poor, you are allowed to use the software
included in Skolelinux/Debian Edu and all the other Free Software.&lt;/p&gt;

&lt;p&gt;Second: The software runs on old machines and this gives us the
possibility to recycle computers, weeded out from offices.  The
servers and desktops are running for more than two years and they are
working reliable. &lt;/p&gt;

&lt;p&gt;We have two servers (one tjener and one terminal server), 45
workstations in three classrooms and seven laptops as a mobile
solution for all classrooms.  These machines are all booting from the
terminal server.  In the moment we are installing 30 laptops as mobile
workstations.  Then the pupils have the possibility to work with these
machines in their classrooms.  Internet access is realized by a WLAN
router, connected to the schools network. This is all done without a
dedicated system administrator or a computer science teacher.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Teachers and pupils are Windows users.  &amp;lt;Irony on&amp;gt; And Linux
isn&#39;t cool. It&#39;s software for freaks using the command line. &amp;lt;Irony
off&amp;gt; They don&#39;t realize the stability of the system. &lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Firefox, Thunderbird, LibreOffice, Ubuntu Server 12.04 (Samba,
Apache, MySQL, Joomla!, … and Skolelinux / Debian Edu)&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;In Germany we have the situation: every school is free to decide
which software they want to use. This decision is influenced by
teachers who learned to use Windows and MS Office. They buy a PC with
Windows preinstalled and an additional testing version of MS
Office. They don&#39;t know about the possibility to use Free Software
instead.  Another problem are the publisher of school books.  They
develop their software, added to the school books, for Windows.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>98.6 percent done with the Norwegian draft translation of Free Culture</title>
                <link>http://people.skolelinux.org/pere/blog/98_6_percent_done_with_the_Norwegian_draft_translation_of_Free_Culture.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/98_6_percent_done_with_the_Norwegian_draft_translation_of_Free_Culture.html</guid>
                <pubDate>Wed, 23 Jul 2014 22:40:00 +0200</pubDate>
                <description>&lt;p&gt;This summer I finally had time to continue working on the Norwegian
&lt;a href=&quot;http://www.docbook.org/&quot;&gt;docbook&lt;/a&gt; version of the 2004 book
&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt; by Lawrence Lessig,
to get a Norwegian text explaining the problems with todays copyright
law.  Yesterday, I finally completed translated the book text.  There
are still some foot/end notes left to translate, the colophon page
need to be rewritten, and a few words and phrases still need to be
translated, but the Norwegian text is ready for the first proof
reading. :) More spell checking is needed, and several illustrations
need to be cleaned up.  The work stopped up because I had to give
priority to other projects the last year, and the progress graph of
the translation show this very well:&lt;/p&gt;

&lt;p&gt;&lt;img width=&quot;80%&quot; align=&quot;center&quot; src=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/raw/master/progress.png&quot;&gt;&lt;/p&gt;

&lt;p&gt;If you want to read the result, check out the 
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;
project pages and the
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.pdf?raw=true&quot;&gt;PDF&lt;/a&gt;,
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.epub?raw=true&quot;&gt;EPUB&lt;/a&gt;
and HTML version available in the
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/tree/master/archive&quot;&gt;archive
directory&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Please report typos, bugs and improvements to the github project if
you find any.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>From English wiki to translated PDF and epub via Docbook</title>
                <link>http://people.skolelinux.org/pere/blog/From_English_wiki_to_translated_PDF_and_epub_via_Docbook.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/From_English_wiki_to_translated_PDF_and_epub_via_Docbook.html</guid>
                <pubDate>Tue, 17 Jun 2014 11:30:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux
project&lt;/a&gt; provide an instruction manual for teachers, system
administrators and other users that contain useful tips for setting up
and maintaining a Debian Edu installation.  This text is about how the
text processing of this manual is handled in the project.&lt;/p&gt;

&lt;p&gt;One goal of the project is to provide information in the native
language of its users, and for this we need to handle translations.
But we also want to make sure each language contain the same
information, so for this we need a good way to keep the translations
in sync.  And we want it to be easy for our users to improve the
documentation, avoiding the need to learn special formats or tools to
contribute, and the obvious way to do this is to make it possible to
edit the documentation using a web browser.  We also want it to be
easy for translators to keep the translation up to date, and give them
help in figuring out what need to be translated. Here is the list of
tools and the process we have found trying to reach all these
goals.&lt;/p&gt;

&lt;p&gt;We maintain the authoritative source of our manual in the
&lt;a href=&quot;https://wiki.debian.org/DebianEdu/Documentation/Wheezy/&quot;&gt;Debian
wiki&lt;/a&gt;, as several wiki pages written in English.  It consist of one
front page with references to the different chapters, several pages
for each chapter, and finally one &quot;collection page&quot; gluing all the
chapters together into one large web page (aka
&lt;a href=&quot;https://wiki.debian.org/DebianEdu/Documentation/Wheezy/AllInOne&quot;&gt;the
AllInOne page&lt;/a&gt;).  The AllInOne page is the one used for further
processing and translations.  Thanks to the fact that the
&lt;a href=&quot;http://moinmo.in/&quot;&gt;MoinMoin&lt;/a&gt; installation on
wiki.debian.org support exporting pages in
&lt;a href=&quot;http://www.docbook.org/&quot;&gt;the Docbook format&lt;/a&gt;, we can fetch
the list of pages to export using the raw version of the AllInOne
page, loop over each of them to generate a Docbook XML version of the
manual.  This process also download images and transform image
references to use the locally downloaded images.  The generated
Docbook XML files are slightly broken, so some post-processing is done
using the &lt;tt&gt;documentation/scripts/get_manual&lt;/tt&gt; program, and the
result is a nice Docbook XML file (debian-edu-wheezy-manual.xml) and
a handfull of images.  The XML file can now be used to generate PDF, HTML
and epub versions of the English manual.  This is the basic step of
our process, making PDF (using dblatex), HTML (using xsltproc) and
epub (using dbtoepub) version from Docbook XML, and the resulting files
are placed in the debian-edu-doc-en binary package.&lt;/p&gt;

&lt;p&gt;But English documentation is not enough for us.  We want translated
documentation too, and we want to make it easy for translators to
track the English original.  For this we use the
&lt;a href=&quot;http://packages.qa.debian.org/p/poxml.html&quot;&gt;poxml&lt;/a&gt; package,
which allow us to transform the English Docbook XML file into a
translation file (a .pot file), usable with the normal gettext based
translation tools used by those translating free software.  The pot
file is used to create and maintain translation files (several .po
files), which the translations update with the native language
translations of all titles, paragraphs and blocks of text in the
original.  The next step is combining the original English Docbook XML
and the translation file (say debian-edu-wheezy-manual.nb.po), to
create a translated Docbook XML file (in this case
debian-edu-wheezy-manual.nb.xml).  This translated (or partly
translated, if the translation is not complete) Docbook XML file can
then be used like the original to create a PDF, HTML and epub version
of the documentation.&lt;/p&gt;

&lt;p&gt;The translators use different tools to edit the .po files.  We
recommend using
&lt;a href=&quot;http://www.kde.org/applications/development/lokalize/&quot;&gt;lokalize&lt;/a&gt;,
while some use emacs and vi, others can use web based editors like
&lt;a href=&quot;http://pootle.translatehouse.org/&quot;&gt;Poodle&lt;/a&gt; or
&lt;a href=&quot;https://www.transifex.com/&quot;&gt;Transifex&lt;/a&gt;.  All we care about
is where the .po file end up, in our git repository.  Updated
translations can either be committed directly to git, or submitted as
&lt;a href=&quot;https://bugs.debian.org/src:debian-edu-doc&quot;&gt;bug reports
against the debian-edu-doc package&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;One challenge is images, which both might need to be translated (if
they show translated user applications), and are needed in different
formats when creating PDF and HTML versions (epub is a HTML version in
this regard).  For this we transform the original PNG images to the
needed density and format during build, and have a way to provide
translated images by storing translated versions in
images/$LANGUAGECODE/.  I am a bit unsure about the details here.  The
package maintainers know more.&lt;/p&gt;

&lt;p&gt;If you wonder what the result look like, we provide
&lt;a href=&quot;http://maintainer.skolelinux.org/debian-edu-doc/&quot;&gt;the content
of the documentation packages on the web&lt;/a&gt;.  See for example the
&lt;a href=&quot;http://maintainer.skolelinux.org/debian-edu-doc/it/debian-edu-wheezy-manual.pdf&quot;&gt;Italian
PDF version&lt;/a&gt; or the
&lt;a href=&quot;http://maintainer.skolelinux.org/debian-edu-doc/de/debian-edu-wheezy-manual.html&quot;&gt;German
HTML version&lt;/a&gt;.  We do not yet build the epub version by default,
but perhaps it will be done in the future.&lt;/p&gt;

&lt;p&gt;To learn more, check out
&lt;a href=&quot;http://packages.qa.debian.org/d/debian-edu-doc.html&quot;&gt;the
debian-edu-doc package&lt;/a&gt;,
&lt;a href=&quot;https://wiki.debian.org/DebianEdu/Documentation/Wheezy/&quot;&gt;the
manual on the wiki&lt;/a&gt; and
&lt;a href=&quot;https://wiki.debian.org/DebianEdu/Documentation/Wheezy/Translations&quot;&gt;the
translation instructions&lt;/a&gt; in the manual.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Free software car computer solution?</title>
                <link>http://people.skolelinux.org/pere/blog/Free_software_car_computer_solution_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Free_software_car_computer_solution_.html</guid>
                <pubDate>Thu, 29 May 2014 18:45:00 +0200</pubDate>
                <description>&lt;p&gt;Dear lazyweb.  I&#39;m planning to set up a small Raspberry Pi computer
in my car, connected to
&lt;a href=&quot;http://www.dx.com/p/400a-4-0-tft-lcd-digital-monitor-for-vehicle-parking-reverse-camera-1440x272-12v-dc-57776&quot;&gt;a
small screen&lt;/a&gt; next to the rear mirror.  I plan to hook it up with a
GPS and a USB wifi card too.  The idea is to get my own
&quot;&lt;a href=&quot;http://en.wikipedia.org/wiki/Carputer&quot;&gt;Carputer&lt;/a&gt;&quot;.  But I
wonder if someone already created a good free software solution for
such car computer.&lt;/p&gt;

&lt;p&gt;This is my current wish list for such system:&lt;/p&gt;

&lt;ul&gt;

 &lt;li&gt;Work on Raspberry Pi.&lt;/li&gt;

 &lt;li&gt;Show current speed limit based on location, and warn if going too
   fast (for example using color codes yellow and red on the screen,
   or make a sound).  This could be done either using either data from
   &lt;a href=&quot;http://www.openstreetmap.org/&quot;&gt;Openstreetmap&lt;/a&gt; or OCR
   info gathered from a dashboard camera.&lt;/li&gt;

 &lt;li&gt;Track automatic toll road passes and their cost, show total spent
   and make it possible to calculate toll costs for planned
   route.&lt;/li&gt;

 &lt;li&gt;Collect GPX tracks for use with OpenStreetMap.&lt;/li&gt;

 &lt;li&gt;Automatically detect and use any wireless connection to connect
   to home server.  Try IP over DNS
   (&lt;a href=&quot;http://dev.kryo.se/iodine/&quot;&gt;iodine&lt;/a&gt;) or ICMP
   (&lt;a href=&quot;http://code.gerade.org/hans/&quot;&gt;Hans&lt;/a&gt;) if direct
   connection do not work.&lt;/li&gt;

 &lt;li&gt;Set up mesh network to talk to other cars with the same system,
   or some standard car mesh protocol.&lt;/li&gt;

 &lt;li&gt;Warn when approaching speed cameras and speed camera ranges
   (speed calculated between two cameras).&lt;/li&gt;

 &lt;li&gt;Suport dashboard/front facing camera to discover speed limits and
   run OCR to track registration number of passing cars.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;If you know of any free software car computer system supporting
some or all of these features, please let me know.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Half the Coverity issues in Gnash fixed in the next release</title>
                <link>http://people.skolelinux.org/pere/blog/Half_the_Coverity_issues_in_Gnash_fixed_in_the_next_release.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Half_the_Coverity_issues_in_Gnash_fixed_in_the_next_release.html</guid>
                <pubDate>Tue, 29 Apr 2014 14:20:00 +0200</pubDate>
                <description>&lt;p&gt;I&#39;ve been following &lt;a href=&quot;http://www.getgnash.org/&quot;&gt;the Gnash
project&lt;/a&gt; for quite a while now.  It is a free software
implementation of Adobe Flash, both a standalone player and a browser
plugin.  Gnash implement support for the AVM1 format (and not the
newer AVM2 format - see
&lt;a href=&quot;http://lightspark.github.io/&quot;&gt;Lightspark&lt;/a&gt; for that one),
allowing several flash based sites to work.  Thanks to the friendly
developers at Youtube, it also work with Youtube videos, because the
Javascript code at Youtube detect Gnash and serve a AVM1 player to
those users. :) Would be great if someone found time to implement AVM2
support, but it has not happened yet.  If you install both Lightspark
and Gnash, Lightspark will invoke Gnash if it find a AVM1 flash file,
so you can get both handled as free software.  Unfortunately,
Lightspark so far only implement a small subset of AVM2, and many
sites do not work yet.&lt;/p&gt;

&lt;p&gt;A few months ago, I started looking at
&lt;a href=&quot;http://scan.coverity.com/&quot;&gt;Coverity&lt;/a&gt;, the static source
checker used to find heaps and heaps of bugs in free software (thanks
to the donation of a scanning service to free software projects by the
company developing this non-free code checker), and Gnash was one of
the projects I decided to check out.  Coverity is able to find lock
errors, memory errors, dead code and more.  A few days ago they even
extended it to also be able to find the heartbleed bug in OpenSSL.
There are heaps of checks being done on the instrumented code, and the
amount of bogus warnings is quite low compared to the other static
code checkers I have tested over the years.&lt;/p&gt;

&lt;p&gt;Since a few weeks ago, I&#39;ve been working with the other Gnash
developers squashing bugs discovered by Coverity.  I was quite happy
today when I checked the current status and saw that of the 777 issues
detected so far, 374 are marked as fixed.  This make me confident that
the next Gnash release will be more stable and more dependable than
the previous one.  Most of the reported issues were and are in the
test suite, but it also found a few in the rest of the code.&lt;/p&gt;

&lt;p&gt;If you want to help out, you find us on
&lt;a href=&quot;https://lists.gnu.org/mailman/listinfo/gnash-dev&quot;&gt;the
gnash-dev mailing list&lt;/a&gt; and on
&lt;a href=&quot;irc://irc.freenode.net/#gnash&quot;&gt;the #gnash channel on
irc.freenode.net IRC server&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Install hardware dependent packages using tasksel (Isenkram 0.7)</title>
                <link>http://people.skolelinux.org/pere/blog/Install_hardware_dependent_packages_using_tasksel__Isenkram_0_7_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Install_hardware_dependent_packages_using_tasksel__Isenkram_0_7_.html</guid>
                <pubDate>Wed, 23 Apr 2014 14:50:00 +0200</pubDate>
                <description>&lt;p&gt;It would be nice if it was easier in Debian to get all the hardware
related packages relevant for the computer installed automatically.
So I implemented one, using
&lt;a href=&quot;http://packages.qa.debian.org/isenkram&quot;&gt;my Isenkram
package&lt;/a&gt;.  To use it, install the tasksel and isenkram packages and
run tasksel as user root.  You should be presented with a new option,
&quot;Hardware specific packages (autodetected by isenkram)&quot;.  When you
select it, tasksel will install the packages isenkram claim is fit for
the current hardware, hot pluggable or not.&lt;p&gt;

&lt;p&gt;The implementation is in two files, one is the tasksel menu entry
description, and the other is the script used to extract the list of
packages to install.  The first part is in
&lt;tt&gt;/usr/share/tasksel/descs/isenkram.desc&lt;/tt&gt; and look like
this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
Task: isenkram
Section: hardware
Description: Hardware specific packages (autodetected by isenkram)
 Based on the detected hardware various hardware specific packages are
 proposed.
Test-new-install: mark show
Relevance: 8
Packages: for-current-hardware
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The second part is in
&lt;tt&gt;/usr/lib/tasksel/packages/for-current-hardware&lt;/tt&gt; and look like
this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
#
(
    isenkram-lookup
    isenkram-autoinstall-firmware -l
) | sort -u
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;All in all, a very short and simple implementation making it
trivial to install the hardware dependent package we all may want to
have installed on our machines.  I&#39;ve not been able to find a way to
get tasksel to tell you exactly which packages it plan to install
before doing the installation.  So if you are curious or careful,
check the output from the isenkram-* command line tools first.&lt;/p&gt;

&lt;p&gt;The information about which packages are handling which hardware is
fetched either from the isenkram package itself in
/usr/share/isenkram/, from git.debian.org or from the APT package
database (using the Modaliases header).  The APT package database
parsing have caused a nasty resource leak in the isenkram daemon (bugs
&lt;a href=&quot;http://bugs.debian.org/719837&quot;&gt;#719837&lt;/a&gt; and
&lt;a href=&quot;http://bugs.debian.org/730704&quot;&gt;#730704&lt;/a&gt;).  The cause is in
the python-apt code (bug
&lt;a href=&quot;http://bugs.debian.org/745487&quot;&gt;#745487&lt;/a&gt;), but using a
workaround I was able to get rid of the file descriptor leak and
reduce the memory leak from ~30 MiB per hardware detection down to
around 2 MiB per hardware detection.  It should make the desktop
daemon a lot more useful.  The fix is in version 0.7 uploaded to
unstable today.&lt;/p&gt;

&lt;p&gt;I believe the current way of mapping hardware to packages in
Isenkram is is a good draft, but in the future I expect isenkram to
use the AppStream data source for this.  A proposal for getting proper
AppStream support into Debian is floating around as
&lt;a href=&quot;https://wiki.debian.org/DEP-11&quot;&gt;DEP-11&lt;/a&gt;, and
&lt;a href=&quot;https://wiki.debian.org/SummerOfCode2014/Projects#SummerOfCode2014.2FProjects.2FAppStreamDEP11Implementation.AppStream.2FDEP-11_for_the_Debian_Archive&quot;&gt;GSoC
project&lt;/a&gt; will take place this summer to improve the situation.  I
look forward to seeing the result, and welcome patches for isenkram to
start using the information when it is ready.&lt;/p&gt;

&lt;p&gt;If you want your package to map to some specific hardware, either
add a &quot;Xb-Modaliases&quot; header to your control file like I did in
&lt;a href=&quot;http://packages.qa.debian.org/pymissile&quot;&gt;the pymissile
package&lt;/a&gt; or submit a bug report with the details to the isenkram
package.  See also
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/tags/isenkram/&quot;&gt;all my
blog posts tagged isenkram&lt;/a&gt; for details on the notation.  I expect
the information will be migrated to AppStream eventually, but for the
moment I got no better place to store it.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>FreedomBox milestone - all packages now in Debian Sid</title>
                <link>http://people.skolelinux.org/pere/blog/FreedomBox_milestone___all_packages_now_in_Debian_Sid.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/FreedomBox_milestone___all_packages_now_in_Debian_Sid.html</guid>
                <pubDate>Tue, 15 Apr 2014 22:10:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;https://wiki.debian.org/FreedomBox&quot;&gt;Freedombox
project&lt;/a&gt; is working on providing the software and hardware to make
it easy for non-technical people to host their data and communication
at home, and being able to communicate with their friends and family
encrypted and away from prying eyes.  It is still going strong, and
today a major mile stone was reached.&lt;/p&gt;

&lt;p&gt;Today, the last of the packages currently used by the project to
created the system images were accepted into Debian Unstable.  It was
the freedombox-setup package, which is used to configure the images
during build and on the first boot.  Now all one need to get going is
the build code from the freedom-maker git repository and packages from
Debian.  And once the freedombox-setup package enter testing, we can
build everything directly from Debian. :)&lt;/p&gt;

&lt;p&gt;Some key packages used by Freedombox are
&lt;a href=&quot;http://packages.qa.debian.org/freedombox-setup&quot;&gt;freedombox-setup&lt;/a&gt;,
&lt;a href=&quot;http://packages.qa.debian.org/plinth&quot;&gt;plinth&lt;/a&gt;,
&lt;a href=&quot;http://packages.qa.debian.org/pagekite&quot;&gt;pagekite&lt;/a&gt;,
&lt;a href=&quot;http://packages.qa.debian.org/tor&quot;&gt;tor&lt;/a&gt;,
&lt;a href=&quot;http://packages.qa.debian.org/privoxy&quot;&gt;privoxy&lt;/a&gt;,
&lt;a href=&quot;http://packages.qa.debian.org/owncloud&quot;&gt;owncloud&lt;/a&gt; and
&lt;a href=&quot;http://packages.qa.debian.org/dnsmasq&quot;&gt;dnsmasq&lt;/a&gt;.  There
are plans to integrate more packages into the setup.  User
documentation is maintained on the Debian wiki.  Please
&lt;a href=&quot;https://wiki.debian.org/FreedomBox/Manual/Jessie&quot;&gt;check out
the manual&lt;/a&gt; and help us improve it.&lt;/p&gt;

&lt;p&gt;To test for yourself and create boot images with the FreedomBox
setup, run this on a Debian machine using a user with sudo rights to
become root:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
sudo apt-get install git vmdebootstrap mercurial python-docutils \
  mktorrent extlinux virtualbox qemu-user-static binfmt-support \
  u-boot-tools
git clone http://anonscm.debian.org/git/freedombox/freedom-maker.git \
  freedom-maker
make -C freedom-maker dreamplug-image raspberry-image virtualbox-image
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Root access is needed to run debootstrap and mount loopback
devices.  See the README in the freedom-maker git repo for more
details on the build.  If you do not want all three images, trim the
make line.  Note that the virtualbox-image target is not really
virtualbox specific.  It create a x86 image usable in kvm, qemu,
vmware and any other x86 virtual machine environment.  You might need
the version of vmdebootstrap in Jessie to get the build working, as it
include fixes for a race condition with kpartx.&lt;/p&gt;

&lt;p&gt;If you instead want to install using a Debian CD and the preseed
method, boot a Debian Wheezy ISO and use this boot argument to load
the preseed values:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
url=&lt;a href=&quot;http://www.reinholdtsen.name/freedombox/preseed-jessie.dat&quot;&gt;http://www.reinholdtsen.name/freedombox/preseed-jessie.dat&lt;/a&gt;
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;I have not tested it myself the last few weeks, so I do not know if
it still work.&lt;/p&gt;

&lt;p&gt;If you wonder how to help, one task you could look at is using
systemd as the boot system.  It will become the default for Linux in
Jessie, so we need to make sure it is usable on the Freedombox.  I did
a simple test a few weeks ago, and noticed dnsmasq failed to start
during boot when using systemd.  I suspect there are other problems
too. :) To detect problems, there is a test suite included, which can
be run from the plinth web interface.&lt;/p&gt;

&lt;p&gt;Give it a go and let us know how it goes on the mailing list, and help
us get the new release published. :) Please join us on
&lt;a href=&quot;irc://irc.debian.org:6667/%23freedombox&quot;&gt;IRC (#freedombox on
irc.debian.org)&lt;/a&gt; and
&lt;a href=&quot;http://lists.alioth.debian.org/mailman/listinfo/freedombox-discuss&quot;&gt;the
mailing list&lt;/a&gt; if you want to help make this vision come true.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>S3QL, a locally mounted cloud file system - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/S3QL__a_locally_mounted_cloud_file_system___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/S3QL__a_locally_mounted_cloud_file_system___nice_free_software.html</guid>
                <pubDate>Wed, 9 Apr 2014 11:30:00 +0200</pubDate>
                <description>&lt;p&gt;For a while now, I have been looking for a sensible offsite backup
solution for use at home.  My requirements are simple, it must be
cheap and locally encrypted (in other words, I keep the encryption
keys, the storage provider do not have access to my private files).
One idea me and my friends had many years ago, before the cloud
storage providers showed up, was to use Google mail as storage,
writing a Linux block device storing blocks as emails in the mail
service provided by Google, and thus get heaps of free space.  On top
of this one can add encryption, RAID and volume management to have
lots of (fairly slow, I admit that) cheap and encrypted storage.  But
I never found time to implement such system.  But the last few weeks I
have looked at a system called
&lt;a href=&quot;https://bitbucket.org/nikratio/s3ql/&quot;&gt;S3QL&lt;/a&gt;, a locally
mounted network backed file system with the features I need.&lt;/p&gt;

&lt;p&gt;S3QL is a fuse file system with a local cache and cloud storage,
handling several different storage providers, any with Amazon S3,
Google Drive or OpenStack API.  There are heaps of such storage
providers.  S3QL can also use a local directory as storage, which
combined with sshfs allow for file storage on any ssh server.  S3QL
include support for encryption, compression, de-duplication, snapshots
and immutable file systems, allowing me to mount the remote storage as
a local mount point, look at and use the files as if they were local,
while the content is stored in the cloud as well.  This allow me to
have a backup that should survive fire.  The file system can not be
shared between several machines at the same time, as only one can
mount it at the time, but any machine with the encryption key and
access to the storage service can mount it if it is unmounted.&lt;/p&gt;

&lt;p&gt;It is simple to use.  I&#39;m using it on Debian Wheezy, where the
package is included already.  So to get started, run &lt;tt&gt;apt-get
install s3ql&lt;/tt&gt;.  Next, pick a storage provider.  I ended up picking
Greenqloud, after reading their nice recipe on
&lt;a href=&quot;https://greenqloud.zendesk.com/entries/44611757-How-To-Use-S3QL-to-mount-a-StorageQloud-bucket-on-Debian-Wheezy&quot;&gt;how
to use S3QL with their Amazon S3 service&lt;/a&gt;, because I trust the laws
in Iceland more than those in USA when it come to keeping my personal
data safe and private, and thus would rather spend money on a company
in Iceland.  Another nice recipe is available from the article
&lt;a href=&quot;http://www.admin-magazine.com/HPC/Articles/HPC-Cloud-Storage&quot;&gt;S3QL
Filesystem for HPC Storage&lt;/a&gt; by Jeff Layton in the HPC section of
Admin magazine.  When the provider is picked, figure out how to get
the API key needed to connect to the storage API.  With Greencloud,
the key did not show up until I had added payment details to my
account.&lt;/p&gt;

&lt;p&gt;Armed with the API access details, it is time to create the file
system.  First, create a new bucket in the cloud.  This bucket is the
file system storage area.  I picked a bucket name reflecting the
machine that was going to store data there, but any name will do.
I&#39;ll refer to it as &lt;tt&gt;bucket-name&lt;/tt&gt; below.  In addition, one need
the API login and password, and a locally created password.  Store it
all in ~root/.s3ql/authinfo2 like this:

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
[s3c]
storage-url: s3c://s.greenqloud.com:443/bucket-name
backend-login: API-login
backend-password: API-password
fs-passphrase: local-password
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I create my local passphrase using &lt;tt&gt;pwget 50&lt;/tt&gt; or similar,
but any sensible way to create a fairly random password should do it.
Armed with these details, it is now time to run mkfs, entering the API
details and password to create it:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
# mkdir -m 700 /var/lib/s3ql-cache
# mkfs.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
  --ssl s3c://s.greenqloud.com:443/bucket-name
Enter backend login: 
Enter backend password: 
Before using S3QL, make sure to read the user&#39;s guide, especially
the &#39;Important Rules to Avoid Loosing Data&#39; section.
Enter encryption password: 
Confirm encryption password: 
Generating random encryption key...
Creating metadata tables...
Dumping metadata...
..objects..
..blocks..
..inodes..
..inode_blocks..
..symlink_targets..
..names..
..contents..
..ext_attributes..
Compressing and uploading metadata...
Wrote 0.00 MB of compressed metadata.
# &lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The next step is mounting the file system to make the storage available.

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
# mount.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
  --ssl --allow-root s3c://s.greenqloud.com:443/bucket-name /s3ql
Using 4 upload threads.
Downloading and decompressing metadata...
Reading metadata...
..objects..
..blocks..
..inodes..
..inode_blocks..
..symlink_targets..
..names..
..contents..
..ext_attributes..
Mounting filesystem...
# df -h /s3ql
Filesystem                              Size  Used Avail Use% Mounted on
s3c://s.greenqloud.com:443/bucket-name  1.0T     0  1.0T   0% /s3ql
#
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The file system is now ready for use.  I use rsync to store my
backups in it, and as the metadata used by rsync is downloaded at
mount time, no network traffic (and storage cost) is triggered by
running rsync.  To unmount, one should not use the normal umount
command, as this will not flush the cache to the cloud storage, but
instead running the umount.s3ql command like this:

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
# umount.s3ql /s3ql
# 
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;There is a fsck command available to check the file system and
correct any problems detected.  This can be used if the local server
crashes while the file system is mounted, to reset the &quot;already
mounted&quot; flag.  This is what it look like when processing a working
file system:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
# fsck.s3ql --force --ssl s3c://s.greenqloud.com:443/bucket-name
Using cached metadata.
File system seems clean, checking anyway.
Checking DB integrity...
Creating temporary extra indices...
Checking lost+found...
Checking cached objects...
Checking names (refcounts)...
Checking contents (names)...
Checking contents (inodes)...
Checking contents (parent inodes)...
Checking objects (reference counts)...
Checking objects (backend)...
..processed 5000 objects so far..
..processed 10000 objects so far..
..processed 15000 objects so far..
Checking objects (sizes)...
Checking blocks (referenced objects)...
Checking blocks (refcounts)...
Checking inode-block mapping (blocks)...
Checking inode-block mapping (inodes)...
Checking inodes (refcounts)...
Checking inodes (sizes)...
Checking extended attributes (names)...
Checking extended attributes (inodes)...
Checking symlinks (inodes)...
Checking directory reachability...
Checking unix conventions...
Checking referential integrity...
Dropping temporary indices...
Backing up old metadata...
Dumping metadata...
..objects..
..blocks..
..inodes..
..inode_blocks..
..symlink_targets..
..names..
..contents..
..ext_attributes..
Compressing and uploading metadata...
Wrote 0.89 MB of compressed metadata.
# 
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Thanks to the cache, working on files that fit in the cache is very
quick, about the same speed as local file access.  Uploading large
amount of data is to me limited by the bandwidth out of and into my
house.  Uploading 685 MiB with a 100 MiB cache gave me 305 kiB/s,
which is very close to my upload speed, and downloading the same
Debian installation ISO gave me 610 kiB/s, close to my download speed.
Both were measured using &lt;tt&gt;dd&lt;/tt&gt;.  So for me, the bottleneck is my
network, not the file system code.  I do not know what a good cache
size would be, but suspect that the cache should e larger than your
working set.&lt;/p&gt;

&lt;p&gt;I mentioned that only one machine can mount the file system at the
time.  If another machine try, it is told that the file system is
busy:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
# mount.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
  --ssl --allow-root s3c://s.greenqloud.com:443/bucket-name /s3ql
Using 8 upload threads.
Backend reports that fs is still mounted elsewhere, aborting.
#
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The file content is uploaded when the cache is full, while the
metadata is uploaded once every 24 hour by default.  To ensure the
file system content is flushed to the cloud, one can either umount the
file system, or ask S3QL to flush the cache and metadata using
s3qlctrl:

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
# s3qlctrl upload-meta /s3ql
# s3qlctrl flushcache /s3ql
# 
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;If you are curious about how much space your data uses in the
cloud, and how much compression and deduplication cut down on the
storage usage, you can use s3qlstat on the mounted file system to get
a report:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
# s3qlstat /s3ql
Directory entries:    9141
Inodes:               9143
Data blocks:          8851
Total data size:      22049.38 MB
After de-duplication: 21955.46 MB (99.57% of total)
After compression:    21877.28 MB (99.22% of total, 99.64% of de-duplicated)
Database size:        2.39 MB (uncompressed)
(some values do not take into account not-yet-uploaded dirty blocks in cache)
#
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I mentioned earlier that there are several possible suppliers of
storage.  I did not try to locate them all, but am aware of at least
&lt;a href=&quot;https://www.greenqloud.com/&quot;&gt;Greenqloud&lt;/a&gt;,
&lt;a href=&quot;http://drive.google.com/&quot;&gt;Google Drive&lt;/a&gt;,
&lt;a href=&quot;http://aws.amazon.com/s3/&quot;&gt;Amazon S3 web serivces&lt;/a&gt;,
&lt;a href=&quot;http://www.rackspace.com/&quot;&gt;Rackspace&lt;/a&gt; and
&lt;a href=&quot;http://crowncloud.net/&quot;&gt;Crowncloud&lt;/A&gt;.  The latter even
accept payment in Bitcoin.  Pick one that suit your need.  Some of
them provide several GiB of free storage, but the prize models are
quite different and you will have to figure out what suits you
best.&lt;/p&gt;

&lt;p&gt;While researching this blog post, I had a look at research papers
and posters discussing the S3QL file system.  There are several, which
told me that the file system is getting a critical check by the
science community and increased my confidence in using it.  One nice
poster is titled
&quot;&lt;a href=&quot;http://www.lanl.gov/orgs/adtsc/publications/science_highlights_2013/docs/pg68_69.pdf&quot;&gt;An
Innovative Parallel Cloud Storage System using OpenStack’s SwiftObject
Store and Transformative Parallel I/O Approach&lt;/a&gt;&quot; by Hsing-Bung
Chen, Benjamin McClelland, David Sherrill, Alfred Torrez, Parks Fields
and Pamela Smith.  Please  have a look.&lt;/p&gt;

&lt;p&gt;Given my problems with different file systems earlier, I decided to
check out the mounted S3QL file system to see if it would be usable as
a home directory (in other word, that it provided POSIX semantics when
it come to locking and umask handling etc).  Running
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html&quot;&gt;my
test code to check file system semantics&lt;/a&gt;, I was happy to discover that
no error was found.  So the file system can be used for home
directories, if one chooses to do so.&lt;/p&gt;

&lt;p&gt;If you do not want a locally file system, and want something that
work without the Linux fuse file system, I would like to mention the
&lt;a href=&quot;http://www.tarsnap.com/&quot;&gt;Tarsnap service&lt;/a&gt;, which also
provide locally encrypted backup using a command line client.  It have
a nicer access control system, where one can split out read and write
access, allowing some systems to write to the backup and others to
only read from it.&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>ReactOS Windows clone - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/ReactOS_Windows_clone___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/ReactOS_Windows_clone___nice_free_software.html</guid>
                <pubDate>Tue, 1 Apr 2014 12:10:00 +0200</pubDate>
                <description>&lt;p&gt;Microsoft have announced that Windows XP reaches its end of life
2014-04-08, in 7 days.  But there are heaps of machines still running
Windows XP, and depending on Windows XP to run their applications, and
upgrading will be expensive, both when it comes to money and when it
comes to the amount of effort needed to migrate from Windows XP to a
new operating system.  Some obvious options (buy new a Windows
machine, buy a MacOSX machine, install Linux on the existing machine)
are already well known and covered elsewhere.  Most of them involve
leaving the user applications installed on Windows XP behind and
trying out replacements or updated versions. In this blog post I want
to mention one strange bird that allow people to keep the hardware and
the existing Windows XP applications and run them on a free software
operating system that is Windows XP compatible.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.reactos.org/&quot;&gt;ReactOS&lt;/a&gt; is a free software
operating system (GNU GPL licensed) working on providing a operating
system that is binary compatible with Windows, able to run windows
programs directly and to use Windows drivers for hardware directly.
The project goal is for Windows user to keep their existing machines,
drivers and software, and gain the advantages from user a operating
system without usage limitations caused by non-free licensing.  It is
a Windows clone running directly on the hardware, so quite different
from the approach taken by &lt;a href=&quot;http://www.winehq.org/&quot;&gt;the Wine
project&lt;/a&gt;, which make it possible to run Windows binaries on
Linux.&lt;/p&gt;

&lt;p&gt;The ReactOS project share code with the Wine project, so most
shared libraries available on Windows are already implemented already.
There is also a software manager like the one we are used to on Linux,
allowing the user to install free software applications with a simple
click directly from the Internet.  Check out the
&lt;a href=&quot;http://www.reactos.org/screenshots&quot;&gt;screen shots on the
project web site&lt;/a&gt; for an idea what it look like (it looks just like
Windows before metro).&lt;/p&gt;

&lt;p&gt;I do not use ReactOS myself, preferring Linux and Unix like
operating systems.  I&#39;ve tested it, and it work fine in a virt-manager
virtual machine.  The browser, minesweeper, notepad etc is working
fine as far as I can tell.  Unfortunately, my main test application
is the software included on a CD with the Lego Mindstorms NXT, which
seem to install just fine from CD but fail to leave any binaries on
the disk after the installation.  So no luck with that test software.
No idea why, but hope someone else figure out and fix the problem.
I&#39;ve tried the ReactOS Live ISO on a physical machine, and it seemed
to work just fine.  If you like Windows and want to keep running your
old Windows binaries, check it out by
&lt;a href=&quot;http://www.reactos.org/download&quot;&gt;downloading&lt;/a&gt; the
installation CD, the live CD or the preinstalled virtual machine
image.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Roger Marsal</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Roger_Marsal.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Roger_Marsal.html</guid>
                <pubDate>Sun, 30 Mar 2014 11:40:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt;
keep gaining new users.  Some weeks ago, a person showed up on IRC,
&lt;a href=&quot;irc://irc.debian.org/#debian-edu&quot;&gt;#debian-edu&lt;/a&gt;, with a
wish to contribute, and I managed to get a interview with this great
contributor Roger Marsal to learn more about his background.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My name is Roger Marsal, I&#39;m 27 years old (1986 generation) and I
live in Barcelona, Spain. I&#39;ve got a strong business background and I
work as a patrimony manager and as a real estate agent.  Additionally,
I&#39;ve co-founded a British based tech company that is nowadays on the
last development phase of a new social networking concept.&lt;/p&gt;

&lt;p&gt;I&#39;m a Linux enthusiast that started its journey with Ubuntu four years
ago and have recently switched to Debian seeking rock solid stability
and as a necessary step to gain expertise.&lt;/p&gt;

&lt;p&gt;In a nutshell, I spend my days working and learning as much as I
can to face both my job, entrepreneur project and feed my Linux
hunger.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I discovered the &lt;a href=&quot;http://www.ltsp.org/&quot;&gt;LTSP&lt;/a&gt; advantages
with &quot;Ubuntu 12.04 alternate install&quot; and after a year of use I
started looking for an alternative.  Even though I highly value and
respect the Ubuntu project, I thought it was necessary for me to
change to a more robust and stable alternative.  As far as I was using
Debian on my personal laptop I thought it would be fine to install
Debian and configure an LTSP server myself.  Surprised, I discovered
that the Debian project also supported a kind of Edubuntu equivalent,
and after having some pain I obtained a Debian Edu network up and
running.  I just loved it.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I found a main advantage in that, once you know &quot;the tips and
tricks&quot;, a new installation just works out of the box. It&#39;s the most
complete alternative I&#39;ve found to create an LTSP network. All the
other distributions seems to be made of plastic, Debian Edu seems to
be made of steel.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I found two main disadvantages.&lt;/p&gt;

&lt;p&gt;I&#39;m not an expert but I&#39;ve got notions and I had to spent a considerable
amount of time trying to bring up a standard network topology. I&#39;m quite
stubborn and I just worked until I did but I&#39;m sure many people with few
resources (not big schools, but academies for example) would have switched
or dropped.&lt;/p&gt;

&lt;p&gt;It&#39;s amazing how such a complex system like Debian Edu has achieved
this out-of-the-box state. Even though tweaking without breaking gets
more difficult, as more factors have to be considered. This can
discourage many people too.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I use Debian, Firefox, Okular, Inkscape, LibreOffice and
Virtualbox.&lt;/p&gt;


&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I don&#39;t think there is a need for a particular strategy. The free
attribute in both &quot;freedom&quot; and &quot;no price&quot; meanings is what will
really bring free software to schools. In my experience I can think of
the &lt;a href=&quot;http://www.r-project.org/&quot;&gt;&quot;R&quot; statistical language&lt;/a&gt;; a
few years a ago was an extremely nerd tool for university people.
Today it&#39;s being increasingly used to teach statistics at many
different level of studies.  I believe free and open software will
increasingly gain popularity, but I&#39;m sure schools will be one of the
first scenarios where this will happen.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Public Trusted Timestamping services for everyone</title>
                <link>http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html</guid>
                <pubDate>Tue, 25 Mar 2014 12:50:00 +0100</pubDate>
                <description>&lt;p&gt;Did you ever need to store logs or other files in a way that would
allow it to be used as evidence in court, and needed a way to
demonstrate without reasonable doubt that the file had not been
changed since it was created?  Or, did you ever need to document that
a given document was received at some point in time, like some
archived document or the answer to an exam, and not changed after it
was received?  The problem in these settings is to remove the need to
trust yourself and your computers, while still being able to prove
that a file is the same as it was at some given time in the past.&lt;/p&gt;

&lt;p&gt;A solution to these problems is to have a trusted third party
&quot;stamp&quot; the document and verify that at some given time the document
looked a given way.  Such
&lt;a href=&quot;https://en.wikipedia.org/wiki/Notarius&quot;&gt;notarius&lt;/a&gt; service
have been around for thousands of years, and its digital equivalent is
called a
&lt;a href=&quot;http://en.wikipedia.org/wiki/Trusted_timestamping&quot;&gt;trusted
timestamping service&lt;/a&gt;.  &lt;a href=&quot;http://www.ietf.org/&quot;&gt;The Internet
Engineering Task Force&lt;/a&gt; standardised how such service could work a
few years ago as &lt;a href=&quot;http://tools.ietf.org/html/rfc3161&quot;&gt;RFC
3161&lt;/a&gt;.  The mechanism is simple.  Create a hash of the file in
question, send it to a trusted third party which add a time stamp to
the hash and sign the result with its private key, and send back the
signed hash + timestamp.  Both email, FTP and HTTP can be used to
request such signature, depending on what is provided by the service
used. Anyone with the document and the signature can then verify that
the document matches the signature by creating their own hash and
checking the signature using the trusted third party public key.
There are several commercial services around providing such
timestamping.  A quick search for
&quot;&lt;a href=&quot;https://duckduckgo.com/?q=rfc+3161+service&quot;&gt;rfc 3161
service&lt;/a&gt;&quot; pointed me to at least
&lt;a href=&quot;https://www.digistamp.com/technical/how-a-digital-time-stamp-works/&quot;&gt;DigiStamp&lt;/a&gt;,
&lt;a href=&quot;http://www.quovadisglobal.co.uk/CertificateServices/SigningServices/TimeStamp.aspx&quot;&gt;Quo
Vadis&lt;/a&gt;,
&lt;a href=&quot;https://www.globalsign.com/timestamp-service/&quot;&gt;Global Sign&lt;/a&gt;
and &lt;a href=&quot;http://www.globaltrustfinder.com/TSADefault.aspx&quot;&gt;Global
Trust Finder&lt;/a&gt;.  The system work as long as the private key of the
trusted third party is not compromised.&lt;/p&gt;

&lt;p&gt;But as far as I can tell, there are very few public trusted
timestamp services available for everyone.  I&#39;ve been looking for one
for a while now. But yesterday I found one over at
&lt;a href=&quot;https://www.pki.dfn.de/zeitstempeldienst/&quot;&gt;Deutches
Forschungsnetz&lt;/a&gt; mentioned in
&lt;a href=&quot;http://www.d-mueller.de/blog/dealing-with-trusted-timestamps-in-php-rfc-3161/&quot;&gt;a
blog by David Müller&lt;/a&gt;.  I then found
&lt;a href=&quot;http://www.rz.uni-greifswald.de/support/dfn-pki-zertifikate/zeitstempeldienst.html&quot;&gt;a
good recipe on how to use the service&lt;/a&gt; over at the University of
Greifswald.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.openssl.org/&quot;&gt;The OpenSSL library&lt;/a&gt; contain
both server and tools to use and set up your own signing service.  See
the ts(1SSL), tsget(1SSL) manual pages for more details.  The
following shell script demonstrate how to extract a signed timestamp
for any file on the disk in a Debian environment:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
set -e
url=&quot;http://zeitstempel.dfn.de&quot;
caurl=&quot;https://pki.pca.dfn.de/global-services-ca/pub/cacert/chain.txt&quot;
reqfile=$(mktemp -t tmp.XXXXXXXXXX.tsq)
resfile=$(mktemp -t tmp.XXXXXXXXXX.tsr)
cafile=chain.txt
if [ ! -f $cafile ] ; then
    wget -O $cafile &quot;$caurl&quot;
fi
openssl ts -query -data &quot;$1&quot; -cert | tee &quot;$reqfile&quot; \
    | /usr/lib/ssl/misc/tsget -h &quot;$url&quot; -o &quot;$resfile&quot;
openssl ts -reply -in &quot;$resfile&quot; -text 1&gt;&amp;2
openssl ts -verify -data &quot;$1&quot; -in &quot;$resfile&quot; -CAfile &quot;$cafile&quot; 1&gt;&amp;2
base64 &lt; &quot;$resfile&quot;
rm &quot;$reqfile&quot; &quot;$resfile&quot;
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The argument to the script is the file to timestamp, and the output
is a base64 encoded version of the signature to STDOUT and details
about the signature to STDERR.  Note that due to
&lt;a href=&quot;http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742553&quot;&gt;a bug
in the tsget script&lt;/a&gt;, you might need to modify the included script
and remove the last line.  Or just write your own HTTP uploader using
curl. :) Now you too can prove and verify that files have not been
changed.&lt;/p&gt;

&lt;p&gt;But the Internet need more public trusted timestamp services.
Perhaps something for &lt;a href=&quot;http://www.uninett.no/&quot;&gt;Uninett&lt;/a&gt; or
my work place the &lt;a href=&quot;http://www.uio.no/&quot;&gt;University of Oslo&lt;/a&gt;
to set up?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Video DVD reader library / python-dvdvideo - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/Video_DVD_reader_library___python_dvdvideo___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Video_DVD_reader_library___python_dvdvideo___nice_free_software.html</guid>
                <pubDate>Fri, 21 Mar 2014 15:25:00 +0100</pubDate>
                <description>&lt;p&gt;Keeping your DVD collection safe from scratches and curious
children fingers while still having it available when you want to see a
movie is not straight forward.  My preferred method at the moment is
to store a full copy of the ISO on a hard drive, and use VLC, Popcorn
Hour or other useful players to view the resulting file.  This way the
subtitles and bonus material are still available and using the ISO is
just like inserting the original DVD record in the DVD player.&lt;/p&gt;

&lt;p&gt;Earlier I used dd for taking security copies, but it do not handle
DVDs giving read errors (which are quite a few of them).  I&#39;ve also
tried using
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Ripping_problematic_DVDs_using_dvdbackup_and_genisoimage.html&quot;&gt;dvdbackup
and genisoimage&lt;/a&gt;, but these days I use the marvellous python library
and program
&lt;a href=&quot;http://bblank.thinkmo.de/blog/new-software-python-dvdvideo&quot;&gt;python-dvdvideo&lt;/a&gt;
written by Bastian Blank.  It is
&lt;a href=&quot;http://packages.qa.debian.org/p/python-dvdvideo.html&quot;&gt;in Debian
already&lt;/a&gt; and the binary package name is python3-dvdvideo. Instead
of trying to read every block from the DVD, it parses the file
structure and figure out which block on the DVD is actually in used,
and only read those blocks from the DVD.  This work surprisingly well,
and I have been able to almost backup my entire DVD collection using
this method.&lt;/p&gt;

&lt;p&gt;So far, python-dvdvideo have failed on between 10 and
20 DVDs, which is a small fraction of my collection.  The most common
problem is
&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=720831&quot;&gt;DVDs
using UTF-16 instead of UTF-8 characters&lt;/a&gt;, which according to
Bastian is against the DVD specification (and seem to cause some
players to fail too).  A rarer problem is what seem to be inconsistent
DVD structures, as the python library
&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=723079&quot;&gt;claim
there is a overlap between objects&lt;/a&gt;.  An equally rare problem claim
&lt;a href=&quot;https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741878&quot;&gt;some
value is out of range&lt;/a&gt;.  No idea what is going on there.  I wish I
knew enough about the DVD format to fix these, to ensure my movie
collection will stay with me in the future.&lt;/p&gt;

&lt;p&gt;So, if you need to keep your DVDs safe, back them up using
python-dvdvideo. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Freedombox on Dreamplug, Raspberry Pi and virtual x86 machine</title>
                <link>http://people.skolelinux.org/pere/blog/Freedombox_on_Dreamplug__Raspberry_Pi_and_virtual_x86_machine.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Freedombox_on_Dreamplug__Raspberry_Pi_and_virtual_x86_machine.html</guid>
                <pubDate>Fri, 14 Mar 2014 11:00:00 +0100</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;https://wiki.debian.org/FreedomBox&quot;&gt;Freedombox
project&lt;/a&gt; is working on providing the software and hardware for
making it easy for non-technical people to host their data and
communication at home, and being able to communicate with their
friends and family encrypted and away from prying eyes.  It has been
going on for a while, and is slowly progressing towards a new test
release (0.2).&lt;/p&gt;

&lt;p&gt;And what day could be better than the Pi day to announce that the
new version will provide &quot;hard drive&quot; / SD card / USB stick images for
Dreamplug, Raspberry Pi and VirtualBox (or any other virtualization
system), and can also be installed using a Debian installer preseed
file.  The Debian based Freedombox is now based on Debian Jessie,
where most of the needed packages used are already present.  Only one,
the freedombox-setup package, is missing.  To try to build your own
boot image to test the current status, fetch the freedom-maker scripts
and build using
&lt;a href=&quot;http://packages.qa.debian.org/vmdebootstrap&quot;&gt;vmdebootstrap&lt;/a&gt;
with a user with sudo access to become root:

&lt;pre&gt;
git clone http://anonscm.debian.org/git/freedombox/freedom-maker.git \
  freedom-maker
sudo apt-get install git vmdebootstrap mercurial python-docutils \
  mktorrent extlinux virtualbox qemu-user-static binfmt-support \
  u-boot-tools
make -C freedom-maker dreamplug-image raspberry-image virtualbox-image
&lt;/pre&gt;

&lt;p&gt;Root access is needed to run debootstrap and mount loopback
devices.  See the README for more details on the build. If you do not
want all three images, trim the make line.  But note that thanks to &lt;a
href=&quot;https://bugs.debian.org/741407&quot;&gt;a race condition in
vmdebootstrap&lt;/a&gt;, the build might fail without the patch to the
kpartx call.&lt;/p&gt;

&lt;p&gt;If you instead want to install using a Debian CD and the preseed
method, boot a Debian Wheezy ISO and use this boot argument to load
the preseed values:&lt;/p&gt;

&lt;pre&gt;
url=&lt;a href=&quot;http://www.reinholdtsen.name/freedombox/preseed-jessie.dat&quot;&gt;http://www.reinholdtsen.name/freedombox/preseed-jessie.dat&lt;/a&gt;
&lt;/pre&gt;

&lt;p&gt;But note that due to &lt;a href=&quot;https://bugs.debian.org/740673&quot;&gt;a
recently introduced bug in apt in Jessie&lt;/a&gt;, the installer will
currently hang while setting up APT sources.  Killing the
&#39;&lt;tt&gt;apt-cdrom ident&lt;/tt&gt;&#39; process when it hang a few times during the
installation will get the installation going.  This affect all
installations in Jessie, and I expect it will be fixed soon.&lt;/p&gt;

&lt;p&gt;Give it a go and let us know how it goes on the mailing list, and help
us get the new release published. :) Please join us on
&lt;a href=&quot;irc://irc.debian.org:6667/%23freedombox&quot;&gt;IRC (#freedombox on
irc.debian.org)&lt;/a&gt; and
&lt;a href=&quot;http://lists.alioth.debian.org/mailman/listinfo/freedombox-discuss&quot;&gt;the
mailing list&lt;/a&gt; if you want to help make this vision come true.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to add extra storage servers in Debian Edu / Skolelinux</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_add_extra_storage_servers_in_Debian_Edu___Skolelinux.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_add_extra_storage_servers_in_Debian_Edu___Skolelinux.html</guid>
                <pubDate>Wed, 12 Mar 2014 12:50:00 +0100</pubDate>
                <description>&lt;p&gt;On larger sites, it is useful to use a dedicated storage server for
storing user home directories and data.  The design for handling this
in &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt;, is
to update the automount rules in LDAP and let the automount daemon on
the clients take care of the rest.  I was reminded about the need to
document this better when one of the customers of
&lt;a href=&quot;http://www.slxdrift.no/&quot;&gt;Skolelinux Drift AS&lt;/a&gt;, where I am
on the board of directors, asked about how to do this.  The steps to
get this working are the following:&lt;/p&gt;

&lt;p&gt;&lt;ol&gt;

&lt;li&gt;Add new storage server in DNS.  I use nas-server.intern as the
example host here.&lt;/li&gt;

&lt;li&gt;Add automoun LDAP information about this server in LDAP, to allow
all clients to automatically mount it on reqeust.&lt;/li&gt;

&lt;li&gt;Add the relevant entries in tjener.intern:/etc/fstab, because
tjener.intern do not use automount to avoid mounting loops.&lt;/li&gt;

&lt;/ol&gt;&lt;/p&gt;

&lt;p&gt;DNS entries are added in GOsa², and not described here.  Follow the
&lt;a href=&quot;https://wiki.debian.org/DebianEdu/Documentation/Wheezy/GettingStarted&quot;&gt;instructions
in the manual&lt;/a&gt; (Machine Management with GOsa² in section Getting
started).&lt;/p&gt;

&lt;p&gt;Ensure that the NFS export points on the server are exported to the
relevant subnets or machines:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
root@tjener:~# showmount -e nas-server
Export list for nas-server:
/storage         10.0.0.0/8
root@tjener:~#
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Here everything on the backbone network is granted access to the
/storage export.  With NFSv3 it is slightly better to limit it to
netgroup membership or single IP addresses to have some limits on the
NFS access.&lt;/p&gt;

&lt;p&gt;The next step is to update LDAP.  This can not be done using GOsa²,
because it lack a module for automount.  Instead, use ldapvi and add
the required LDAP objects using an editor.&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
ldapvi --ldap-conf -ZD &#39;(cn=admin)&#39; -b ou=automount,dc=skole,dc=skolelinux,dc=no
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;When the editor show up, add the following LDAP objects at the
bottom of the document.  The &quot;/&amp;&quot; part in the last LDAP object is a
wild card matching everything the nas-server exports, removing the
need to list individual mount points in LDAP.&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
add cn=nas-server,ou=auto.skole,ou=automount,dc=skole,dc=skolelinux,dc=no
objectClass: automount
cn: nas-server
automountInformation: -fstype=autofs --timeout=60 ldap:ou=auto.nas-server,ou=automount,dc=skole,dc=skolelinux,dc=no

add ou=auto.nas-server,ou=automount,dc=skole,dc=skolelinux,dc=no
objectClass: top
objectClass: automountMap
ou: auto.nas-server

add cn=/,ou=auto.nas-server,ou=automount,dc=skole,dc=skolelinux,dc=no
objectClass: automount
cn: /
automountInformation: -fstype=nfs,tcp,rsize=32768,wsize=32768,rw,intr,hard,nodev,nosuid,noatime nas-server.intern:/&amp;
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The last step to remember is to mount the relevant mount points in
tjener.intern by adding them to /etc/fstab, creating the mount
directories using mkdir and running &quot;mount -a&quot; to mount them.&lt;/p&gt;

&lt;p&gt;When this is done, your users should be able to access the files on
the storage server directly by just visiting the
/tjener/nas-server/storage/ directory using any application on any
workstation, LTSP client or LTSP server.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>New home and release 1.0 for netgroup and innetgr (aka ng-utils)</title>
                <link>http://people.skolelinux.org/pere/blog/New_home_and_release_1_0_for_netgroup_and_innetgr__aka_ng_utils_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/New_home_and_release_1_0_for_netgroup_and_innetgr__aka_ng_utils_.html</guid>
                <pubDate>Sat, 22 Feb 2014 21:45:00 +0100</pubDate>
                <description>&lt;p&gt;Many years ago, I wrote a GPL licensed version of the netgroup and
innetgr tools, because I needed them in
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux&lt;/a&gt;.  I called the project
ng-utils, and it has served me well.  I placed the project under the
&lt;a href=&quot;http://www.hungry.com/&quot;&gt;Hungry Programmer&lt;/a&gt; umbrella, and it was maintained in our CVS
repository.  But many years ago, the CVS repository was dropped (lost,
not migrated to new hardware, not sure), and the project have lacked a
proper home since then.&lt;/p&gt;

&lt;p&gt;Last summer, I had a look at the package and made a new release
fixing a irritating crash bug, but was unable to store the changes in
a proper source control system.  I applied for a project on
&lt;a href=&quot;https://alioth.debian.org/&quot;&gt;Alioth&lt;/a&gt;, but did not have time
to follow up on it.  Until today. :)&lt;/p&gt;

&lt;p&gt;After many hours of cleaning and migration, the ng-utils project
now have a new home, and a git repository with the highlight of the
history of the project.  I published all release tarballs and imported
them into the git repository.  As the project is really stable and not
expected to gain new features any time soon, I decided to make a new
release and call it 1.0.  Visit the new project home on
&lt;a href=&quot;https://alioth.debian.org/projects/ng-utils/&quot;&gt;https://alioth.debian.org/projects/ng-utils/&lt;/a&gt;
if you want to check it out.  The new version is also uploaded into
&lt;a href=&quot;http://packages.qa.debian.org/n/ng-utils.html&quot;&gt;Debian Unstable&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Testing sysvinit from experimental in Debian Hurd</title>
                <link>http://people.skolelinux.org/pere/blog/Testing_sysvinit_from_experimental_in_Debian_Hurd.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Testing_sysvinit_from_experimental_in_Debian_Hurd.html</guid>
                <pubDate>Mon, 3 Feb 2014 13:40:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago I decided to try to help the Hurd people to get
their changes into sysvinit, to allow them to use the normal sysvinit
boot system instead of their old one.  This follow up on the
&lt;a href=&quot;https://teythoon.cryptobitch.de//categories/gsoc.html&quot;&gt;great
Google Summer of Code work&lt;/a&gt; done last summer by Justus Winter to
get Debian on Hurd working more like Debian on Linux.  To get started,
I downloaded a prebuilt hard disk image from
&lt;a href=&quot;http://ftp.debian-ports.org/debian-cd/hurd-i386/current/debian-hurd.img.tar.gz&quot;&gt;http://ftp.debian-ports.org/debian-cd/hurd-i386/current/debian-hurd.img.tar.gz&lt;/a&gt;,
and started it using virt-manager.&lt;/p&gt;

&lt;p&gt;The first think I had to do after logging in (root without any
password) was to get the network operational.  I followed
&lt;a href=&quot;https://www.debian.org/ports/hurd/hurd-install&quot;&gt;the
instructions on the Debian GNU/Hurd ports page&lt;/a&gt; and ran these
commands as root to get the machine to accept a IP address from the
kvm internal DHCP server:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
settrans -fgap /dev/netdde /hurd/netdde
kill $(ps -ef|awk &#39;/[p]finet/ { print $2}&#39;)
kill $(ps -ef|awk &#39;/[d]evnode/ { print $2}&#39;)
dhclient /dev/eth0
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;After this, the machine had internet connectivity, and I could
upgrade it and install the sysvinit packages from experimental and
enable it as the default boot system in Hurd.&lt;/p&gt;

&lt;p&gt;But before I did that, I set a password on the root user, as ssh is
running on the machine it for ssh login to work a password need to be
set.  Also, note that a bug somewhere in openssh on Hurd block
compression from working.  Remember to turn that off on the client
side.&lt;/p&gt;

&lt;p&gt;Run these commands as root to upgrade and test the new sysvinit
stuff:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
cat &gt; /etc/apt/sources.list.d/experimental.list &amp;lt;&amp;lt;EOF
deb http://http.debian.net/debian/ experimental main
EOF
apt-get update
apt-get dist-upgrade
apt-get install -t experimental initscripts sysv-rc sysvinit \
    sysvinit-core sysvinit-utils
update-alternatives --config runsystem
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;To reboot after switching boot system, you have to use
&lt;tt&gt;reboot-hurd&lt;/tt&gt; instead of just &lt;tt&gt;reboot&lt;/tt&gt;, as there is not
yet a sysvinit process able to receive the signals from the normal
&#39;reboot&#39; command.  After switching to sysvinit as the boot system,
upgrading every package and rebooting, the network come up with DHCP
after boot as it should, and the settrans/pkill hack mentioned at the
start is no longer needed.  But for some strange reason, there are no
longer any login prompt in the virtual console, so I logged in using
ssh instead.

&lt;p&gt;Note that there are some race conditions in Hurd making the boot
fail some times.  No idea what the cause is, but hope the Hurd porters
figure it out.  At least Justus said on IRC (#debian-hurd on
irc.debian.org) that they are aware of the problem.  A way to reduce
the impact is to upgrade to the Hurd packages built by Justus by
adding this repository to the machine:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
cat &gt; /etc/apt/sources.list.d/hurd-ci.list &amp;lt;&amp;lt;EOF
deb http://darnassus.sceen.net/~teythoon/hurd-ci/ sid main
EOF
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;At the moment the prebuilt virtual machine get some packages from
http://ftp.debian-ports.org/debian, because some of the packages in
unstable do not yet include the required patches that are lingering in
BTS.  This is the completely list of &quot;unofficial&quot; packages installed:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
# aptitude search &#39;?narrow(?version(CURRENT),?origin(Debian Ports))&#39;
i   emacs                   - GNU Emacs editor (metapackage)
i   gdb                     - GNU Debugger
i   hurd-recommended        - Miscellaneous translators
i   isc-dhcp-client         - ISC DHCP client
i   isc-dhcp-common         - common files used by all the isc-dhcp* packages
i   libc-bin                - Embedded GNU C Library: Binaries
i   libc-dev-bin            - Embedded GNU C Library: Development binaries
i   libc0.3                 - Embedded GNU C Library: Shared libraries
i A libc0.3-dbg             - Embedded GNU C Library: detached debugging symbols
i   libc0.3-dev             - Embedded GNU C Library: Development Libraries and Hea
i   multiarch-support       - Transitional package to ensure multiarch compatibilit
i A x11-common              - X Window System (X.Org) infrastructure
i   xorg                    - X.Org X Window System
i A xserver-xorg            - X.Org X server
i A xserver-xorg-input-all  - X.Org X server -- input driver metapackage
#
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;All in all, testing hurd has been an interesting experience. :)
X.org did not work out of the box and I never took the time to follow
the porters instructions to fix it.  This time I was interested in the
command line stuff.&lt;p&gt;
</description>
        </item>
        
        <item>
                <title>A fist full of non-anonymous Bitcoins</title>
                <link>http://people.skolelinux.org/pere/blog/A_fist_full_of_non_anonymous_Bitcoins.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_fist_full_of_non_anonymous_Bitcoins.html</guid>
                <pubDate>Wed, 29 Jan 2014 14:10:00 +0100</pubDate>
                <description>&lt;p&gt;Bitcoin is a incredible use of peer to peer communication and
encryption, allowing direct and immediate money transfer without any
central control.  It is sometimes claimed to be ideal for illegal
activity, which I believe is quite a long way from the truth.  At least
I would not conduct illegal money transfers using a system where the
details of every transaction are kept forever.  This point is
investigated in
&lt;a href=&quot;https://www.usenix.org/publications/login&quot;&gt;USENIX ;login:&lt;/a&gt;
from December 2013, in the article
&quot;&lt;a href=&quot;https://www.usenix.org/system/files/login/articles/03_meiklejohn-online.pdf&quot;&gt;A
Fistful of Bitcoins - Characterizing Payments Among Men with No
Names&lt;/a&gt;&quot; by Sarah Meiklejohn, Marjori Pomarole,Grant Jordan, Kirill
Levchenko, Damon McCoy, Geoffrey M. Voelker, and Stefan Savage.  They
analyse the transaction log in the Bitcoin system, using it to find
addresses belong to individuals and organisations and follow the flow
of money from both Bitcoin theft and trades on Silk Road to where the
money end up.  This is how they wrap up their article:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
&lt;p&gt;&quot;To demonstrate the usefulness of this type of analysis, we turned
our attention to criminal activity. In the Bitcoin economy, criminal
activity can appear in a number of forms, such as dealing drugs on
Silk Road or simply stealing someone else’s bitcoins. We followed the
flow of bitcoins out of Silk Road (in particular, from one notorious
address) and from a number of highly publicized thefts to see whether
we could track the bitcoins to known services. Although some of the
thieves attempted to use sophisticated mixing techniques (or possibly
mix services) to obscure the flow of bitcoins, for the most part
tracking the bitcoins was quite straightforward, and we ultimately saw
large quantities of bitcoins flow to a variety of exchanges directly
from the point of theft (or the withdrawal from Silk Road).&lt;/p&gt;

&lt;p&gt;As acknowledged above, following stolen bitcoins to the point at
which they are deposited into an exchange does not in itself identify
the thief; however, it does enable further de-anonymization in the
case in which certain agencies can determine (through, for example,
subpoena power) the real-world owner of the account into which the
stolen bitcoins were deposited.  Because such exchanges seem to serve
as chokepoints into and out of the Bitcoin economy (i.e., there are
few alternative ways to cash out), we conclude that using Bitcoin for
money laundering or other illicit purposes does not (at least at
present) seem to be particularly attractive.&quot;&lt;/p&gt;
&lt;/blockquote&gt;&lt;p&gt;

&lt;p&gt;These researches are not the first to analyse the Bitcoin
transaction log.  The 2011 paper
&quot;&lt;a href=&quot;http://arxiv.org/abs/1107.4524&quot;&gt;An Analysis of Anonymity in
the Bitcoin System&lt;/A&gt;&quot; by Fergal Reid and Martin Harrigan is
summarized like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
&quot;Anonymity in Bitcoin, a peer-to-peer electronic currency system, is a
complicated issue. Within the system, users are identified by
public-keys only. An attacker wishing to de-anonymize its users will
attempt to construct the one-to-many mapping between users and
public-keys and associate information external to the system with the
users. Bitcoin tries to prevent this attack by storing the mapping of
a user to his or her public-keys on that user&#39;s node only and by
allowing each user to generate as many public-keys as required. In
this chapter we consider the topological structure of two networks
derived from Bitcoin&#39;s public transaction history. We show that the
two networks have a non-trivial topological structure, provide
complementary views of the Bitcoin system and have implications for
anonymity. We combine these structures with external information and
techniques such as context discovery and flow analysis to investigate
an alleged theft of Bitcoins, which, at the time of the theft, had a
market value of approximately half a million U.S. dollars.&quot;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I hope these references can help kill the urban myth that Bitcoin
is anonymous.  It isn&#39;t really a good fit for illegal activites.  Use
cash if you need to stay anonymous, at least until regular DNA
sampling of notes and coins become the norm. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>New chrpath release 0.16</title>
                <link>http://people.skolelinux.org/pere/blog/New_chrpath_release_0_16.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/New_chrpath_release_0_16.html</guid>
                <pubDate>Tue, 14 Jan 2014 11:00:00 +0100</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.coverity.com/&quot;&gt;Coverity&lt;/a&gt; is a nice tool to
find problems in C, C++ and Java code using static source code
analysis.  It can detect a lot of different problems, and is very
useful to find memory and locking bugs in the error handling part of
the source.  The company behind it provide
&lt;a href=&quot;https://scan.coverity.com/&quot;&gt;check of free software projects as
a community service&lt;/a&gt;, and many hundred free software projects are
already checked.  A few days ago I decided to have a closer look at
the Coverity system, and discovered that the
&lt;a href=&quot;http://www.gnu.org/software/gnash/&quot;&gt;gnash&lt;/a&gt; and
&lt;a href=&quot;http://sourceforge.net/projects/ipmitool/&quot;&gt;ipmitool&lt;/a&gt;
projects I am involved with was already registered.  But these are
fairly big, and I would also like to have a small and easy project to
check, and decided to &lt;a href=&quot;http://scan.coverity.com/projects/1179&quot;&gt;request
checking of the chrpath project&lt;/a&gt;.  It was
added to the checker and discovered seven potential defects.  Six of
these were real, mostly resource &quot;leak&quot; when the program detected an
error.  Nothing serious, as the resources would be released a fraction
of a second later when the program exited because of the error, but it
is nice to do it right in case the source of the program some time in
the future end up in a library.  Having fixed all defects and added
&lt;a href=&quot;https://lists.alioth.debian.org/mailman/listinfo/chrpath-devel&quot;&gt;a
mailing list for the chrpath developers&lt;/a&gt;, I decided it was time to
publish a new release.  These are the release notes:&lt;/p&gt;

&lt;p&gt;New in 0.16 released 2014-01-14:&lt;/p&gt;

&lt;ul&gt;

  &lt;li&gt;Fixed all minor bugs discovered by Coverity.&lt;/li&gt;
  &lt;li&gt;Updated config.sub and config.guess from the GNU project.&lt;/li&gt;
  &lt;li&gt;Mention new project mailing list in the documentation.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;You can
&lt;a href=&quot;https://alioth.debian.org/frs/?group_id=31052&quot;&gt;download the
new version 0.16 from alioth&lt;/a&gt;.  Please let us know via the Alioth
project if something is wrong with the new release.  The test suite
did not discover any old errors, so if you find a new one, please also
include a test suite check.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Dominik George</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Dominik_George.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Dominik_George.html</guid>
                <pubDate>Wed, 25 Dec 2013 13:40:00 +0100</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux
project&lt;/a&gt; consist of both newcomers and old timers, and this time I
was able to get an interview with a newcomer in the project who showed
up on the IRC channel a few weeks ago to let us know about his
successful installation of Debian Edu Wheezy in his School.  Say hello
to &lt;a href=&quot;https://www.ohloh.net/accounts/Natureshadow&quot;&gt;Dominik
George&lt;/a&gt;.&lt;/p&gt;

&lt;!-- http://www.dominik-george.de/images/foto.jpg --&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am a 23 year-old student from Germany who has spent half of his
life with open source. In &quot;real life&quot;, I am, as already mentioned, a
student in the fields of Computer Science, Electrical Engineering,
Information Technologies and Anglistics. Due to my (only partially
voluntary) huge engagement in the open source world, these things are
a bit vacant right now however.&lt;/p&gt;

&lt;p&gt;I also have been working as a project teacher at a Gymasnium
(public school) for various years now. I took up that work some time
around 2005 when still attending that school myself and have continued
it until today. I also had been running the (kind of very advanced)
network of that school together with a team of very interested and
talented students in the age of 11 to 15 years, who took the chance to
learn a lot about open source and networking before I left the school
to help building another school&#39;s informational education concept from
scratch.&lt;/p&gt;

&lt;p&gt;That said, one might see me as a kind of &quot;glue&quot; between school kids
and the elderly of teachers as well as between the open source
ecosystem and the (even more complex) educational ecosystem.&lt;/p&gt;

&lt;p&gt;When I am not busy with open source or education, I like Geocaching
and cycling.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I think that happened some time around 2009 when I first attended
&lt;a href=&quot;http://www.froscon.org&quot;&gt;FrOSCon&lt;/a&gt; and visited the project
booth. I think I wasn&#39;t too interested back then because I used to
have an attitude of disliking software that does too much stuff on its
own. Maybe I was too inexperienced to realise the upsides of an
&quot;out-of-the-box&quot; solution ;).&lt;/p&gt;

&lt;p&gt;The first time I actively talked to Skolelinux people was at
&lt;a href=&quot;http://www.openrheinruhr.de&quot;&gt;OpenRheinRuhr&lt;/a&gt; 2011 when the
BiscuIT project, a home-grewn software used by my school for various
really cool things from timetables and class contact lists to lunch
ordering, student ID card printing and project elections first got to
a stage where it could have been published. I asked the Skolelinux
guys running the booth if the project were interested in it and gave a
small demonstration, but there wasn&#39;t any real feedback and the guys
seemed rather uninterested.&lt;/p&gt;

&lt;p&gt;After I left the school where I developed the software, it got
mostly lost, but I am now reimplementing it for my new school. I have
reusability and compatibility in mind, and I hop there will be a new
basis for contributing it to the Skolelinux project ;)!&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The most important advantage seems to be that it &quot;just
works&quot;. After overcoming some minor (but still very annoying) glitches
in the installer, I got a fully functional, working school network,
without the month-long hassle I experienced when setting all that up
from scratch in earlier years. And above that, it rocked - I didn&#39;t
have any real hardware at hand, because the school was just founded
and has no money whatsoever, so I installed a combined server (main
server, terminal services and workstation) in a VM on my personal
notebook, bridging the LTSP network interface to the ethernet port,
and then PXE-booted the Windows notebooks that were lying around from
it. I could use 8 clients without any performance issues, by using a
tiny little VM on a tiny little notebook. I think that&#39;s enough to say
that it rocks!&lt;/p&gt;

&lt;p&gt;Secondly, there are marketing reasons. Life&#39;s bad, and so no
politician will ever permit a setup described as &quot;Debian, an universal
operating system, with some really cool educational tools&quot; while they
will be jsut fine with &quot;Skolelinux, a single-purpose solution for your
school network&quot;, even if both turn out to be the very same thing (yes,
this is unfair towards the Skolelinux project, and must not be taken
too seriously - you get the idea, anyway).&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I have not been involved with Skolelinux long enough to really
answer this question in a fair way. Thus, please allow me to put it in
other words: &quot;What do you expect from Skolelinux to keep liking it?&quot; I
can list a few points about that:&lt;/p&gt;

&lt;ul&gt;

 &lt;li&gt;always strive to get all things integrated into Debian upstream
 &lt;li&gt;be open to discussion about changes and the like, even with newcomers
 &lt;li&gt;be helpful at being helpful ;)

&lt;/ul&gt;

&lt;p&gt;I&#39;m really sorry I cannot say much more about that :(!&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;First of all, all software I use is free and open. I have abandoned
all non-free software (except for firmware on my darned phone) this
year.&lt;/p&gt;

&lt;p&gt;I run Debian GNU/Linux on all PC systems I use. On that, I mostly
run text tools. I use
&lt;a href=&quot;https://www.mirbsd.org/mksh.htm&quot;&gt;mksh&lt;/a&gt; as shell,
&lt;a href=&quot;https://www.mirbsd.org/jupp.htm&quot;&gt;jupp&lt;/a&gt; as very advanced
text editor (I even got the developer to help me write a script/macro
based full-featured student management software with the two),
&lt;a href=&quot;http://mcabber.com/&quot;&gt;mcabber&lt;/a&gt; for XMPP and
&lt;a href=&quot;http://www.irssi.org/&quot;&gt;irssi&lt;/a&gt; for IRC. For that overly
coloured world called the WWW, I use
&lt;a href=&quot;https://www.mozilla.org/en-US/firefox/new/&quot;&gt;Iceweasel
(Firefox)&lt;/a&gt;. Oh, and &lt;a href=&quot;http://www.mutt.org/&quot;&gt;mutt&lt;/a&gt; for
e-mail.&lt;/p&gt;

&lt;p&gt;However, while I am personally aware of the fact that text tools
are more efficient and powerful than anything else, I also use (or at
least operate) some tools that are suitable to bring open source to
kids. One of these things is &lt;a href=&quot;http://jappix.org/&quot;&gt;Jappix&lt;/a&gt;,
which I already introduced to some kids even before they got aware of
Facebook, making them see for themselves that they do not need
Facebook now ;).&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Well, that&#39;s a two-sided thing. One side is what I believe, and one
side is what I have experienced.&lt;/p&gt;

&lt;p&gt;I believe that the right strategy is showing them the benefits. But
that won&#39;t work out as long as the acceptance of free alternatives
grows globally. What I mean is that if all the kids are almost forced
to use Windows, Facebook, Skype, you name it at home, they will not
see why they would want to use alternatives at school. I have seen
students take seat in front of a fully-functional, modern Debian
desktop that could do anything their Windows at home could do, and
they jsut refused to use it because &quot;Linux sucks&quot;. It is something
that makes the council of our city spend around 600000 € to buy
software - not including hardware, mind you - for operating school
networks, and for installing a system that, as has been proved, does
not work. For those of you readers who are good at maths, have you
already found out how many lives could have been saved with that money
if we had instead used it to bring education to parts of the world
that need it? I have, and found it to be nothing less dramatic than
plain criminal.&lt;/p&gt;

&lt;p&gt;That said, the only feasible way appears to be the bottom up
method. We have to bring free software to kids and parents. I have
founded an association named
&lt;a href=&quot;https://www.teckids.org&quot;&gt;Teckids&lt;/a&gt; here in Germany that does
just that. We organise several events for kids and adolescents in the
area of free and open source software, for example the
&lt;a href=&quot;http://kids.froscon.org&quot;&gt;FrogLabs&lt;/a&gt;, which share staff with
Teckids and are the youth programme of
&lt;a href=&quot;http://www.froscon.org&quot;&gt;the Free and Open Source Software
Conference (FrOSCon)&lt;/a&gt;. We do a lot more than most other conferences
- this year, we first offered the FrogLabs as a holiday camp for kids
aged 10 to 16. It was a huge success, with approx. 30 kids taking part
and learning with and about free software through a whole weekend. All
of us had a lot of fun, and the results were really exciting.&lt;/p&gt;

&lt;p&gt;Apart from that, we are preparing a campaign that is supposed to bring
the message of free alternatives to stuff kids use every day to them and
their parents, e.g. the use of Jabber / Jappix instead of Facebook and
Skype. To make that possible, we are planning to get together a team of
clever kids who understand very well what their peers need and can bring
it across to them. So we will have a peer-driven network of adolescents
who teach each other and collect feedback from the community of minors.
We then take that feedback and our own experience to work closely with
open source projects, such as Skolelinux or Jappix, at improving their
software in a way that makes it more and more attractive for the target
group. At least I hope that we will have good cooperation with
Skolelinux in the future ;)!&lt;/p&gt;

&lt;p&gt;So in conclusion, what I believe is that, if it weren&#39;t for the world
being so bad, it should be very clear to the political decision makers
that the only way to go nowadays is free software for various reasons,
but I have learnt that the only way that seems to work is bottom up.&lt;/p&gt;

&lt;!--

&gt;  * Who should be interviewed with this questions in the future?

That&#39;s probably the hardest question of them all, as I do not know the
community. However, I would be willing to do the following:

 &lt;li&gt;Run an interview with a German headteacher who is very open to
   free software, and also prefers it, but cannot really use it because
   of the decision makers above;
 &lt;li&gt;Run interviews with some kids, both with and without previous
   knowledge about free software

If that is wanted, just let me know ;).

--&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Klaus Knopper</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Klaus_Knopper.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Klaus_Knopper.html</guid>
                <pubDate>Fri, 6 Dec 2013 09:50:00 +0100</pubDate>
                <description>&lt;p&gt;It has been a while since I managed to publish the last interview,
but the &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt; community is still going strong, and yesterday we even
had a new school administrator show up on
&lt;a href=&quot;irc://irc.debian.org/#debian-edu&quot;&gt;#debian-edu&lt;/a&gt; to share
his success story with installing Debian Edu at their school.  This
time I have been able to get some helpful comments from the creator of
Knoppix, Klaus Knopper, who was involved in a Skolelinux project in
Germany a few years ago.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am Klaus Knopper.  I have a master degree in electrical
engineering, and is currently professor in information management at
the university of applied sciences Kaiserslautern / Germany and
freelance Open Source software developer and consultant.&lt;/p&gt;

&lt;p&gt;All of this is pretty much of the work I spend my days with. Apart
from teaching, I&#39;m also conducting some more or less experimental
projects like the &lt;a href=&quot;http://www.knoppix.org&quot;&gt;Knoppix GNU/Linux live
system&lt;/a&gt; (Debian-based like Skolelinux),
&lt;a href=&quot;http://www.knopper.net/knoppix-adriane/index-en.html&quot;&gt;ADRIANE&lt;/a&gt;
(a blind-friendly talking desktop system) and
&lt;a href=&quot;http://www.knopper.net/linbo/index-en.html&quot;&gt;LINBO&lt;/a&gt;
(Linux-based network boot console, a fast remote install and repair
system supporting various operating systems).&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The credit for this have to go to Kurt Gramlich, who is the German
coordinator for Skolelinux.  We were looking for an all-in-one open
source community-supported distribution for schools, and Kurt
introduced us to Skolelinux for this purpose.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;
  &lt;li&gt;Quick installation,&lt;/li&gt;
  &lt;li&gt;works (almost) out of the box,&lt;/li&gt;
  &lt;li&gt;contains many useful software packages for teaching and learning,&lt;/li&gt;
  &lt;li&gt;is a purely community-based distro and not controlled by a
    single company,&lt;/li&gt;
  &lt;li&gt;has a large number of supporters and teachers who share their
    experience and problem solutions.&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;
  &lt;li&gt;Skolelinux is - as we had to learn - not easily upgradable to
  the next version.  Opposed to its genuine Debian base, upgrading to
  a new version means a full new installation from scratch to get it
  working again reliably.

  &lt;li&gt;Skolelinux is based on Debian/stable, and therefore always a
  little outdated in terms of program versions compared to Edubuntu or
  similar educational Linux distros, which rather use Debian/testing
  as their base.

  &lt;li&gt;Skolelinux has some very self-opinionated and stubborn default
  configuration which in my opinion adds unnecessary complexity and is
  not always suitable for a schools needs, the preset network
  configuration is actually a core definition feature of Skolelinux
  and not easy to change, so schools sometimes have to change their
  network configuration to make it &quot;Skolelinux-compatible&quot;.

  &lt;li&gt;Some proposed extensions, which were made available as
  contribution, like secure examination mode and lecture material
  distribution and collection, were not accepted into the mainline
  Skolelinux development and are now not easy to maintain in the
  future because of Skolelinux somewhat undeterministic update
  schemes.&lt;/li&gt;

  &lt;li&gt;Skolelinux has only a very tiny number of base developers
  compared to Debian.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;For these reasons and experience from our project, I would now
rather consider using plain Debian for schools next time, until
Skolelinux is more closely integrated into Debian and becomes
upgradeable without reinstallation.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;GNU/Linux with LXDE desktop, bash for interactive dialog and
programming, texlive for documentation and correspondence,
occasionally LibreOffice for document format conversion. Various
programming languages for teaching.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Strong arguments are&lt;/p&gt;

&lt;ul&gt;

  &lt;li&gt;Knowledge is free, and so should be methods and tools for
    teaching and learning.&lt;/li&gt;

  &lt;li&gt;Students can learn with and use the same software at school, at
    home, and at their working place without running into license or
    conversion problems.&lt;/li&gt;

  &lt;li&gt;Closed source or proprietary software hides knowledge rather
    than exposing it, and proprietary software vendors try to bind
    customers to certain products.  But teachers need to teach
    science, not products.&lt;/li&gt;

  &lt;li&gt;If you have everything you for daily work as open source, what
    would you need proprietary software for?&lt;/li&gt;

&lt;/ul&gt;
</description>
        </item>
        
        <item>
                <title>Dugnadsnett for alle, a wireless community network in Oslo, take shape</title>
                <link>http://people.skolelinux.org/pere/blog/Dugnadsnett_for_alle__a_wireless_community_network_in_Oslo__take_shape.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Dugnadsnett_for_alle__a_wireless_community_network_in_Oslo__take_shape.html</guid>
                <pubDate>Sat, 30 Nov 2013 10:10:00 +0100</pubDate>
                <description>&lt;p&gt;If you want the ability to electronically communicate directly with
your neighbors and friends using a network controlled by your peers in
stead of centrally controlled by a few corporations, or would like to
experiment with interesting network technology, the
&lt;a href=&quot;http://www.dugnadsnett.no/&quot;&gt;Dugnasnett for alle i Oslo&lt;/a&gt;
might be project for you.  39 mesh nodes are currently being planned,
in the freshly started initiative from NUUG and Hackeriet to create a
wireless community network.  The work is inspired by
&lt;a href=&quot;http://freifunk.net/&quot;&gt;Freifunk&lt;/a&gt;,
&lt;a href=&quot;http://www.awmn.net/&quot;&gt;Athens Wireless Metropolitan
Network&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Roofnet&quot;&gt;Roofnet&lt;/a&gt;
and other successful mesh networks around the globe.  Two days ago we
held a workshop to try to get people started on setting up their own
mesh node, and there we decided to create a new mailing list
&lt;a href=&quot;http://lists.nuug.no/mailman/listinfo/dugnadsnett&quot;&gt;dugnadsnett
(at) nuug.no&lt;/a&gt; and IRC channel
&lt;a href=&quot;irc://irc.freenode.net/#dugnadsnett.no&quot;&gt;#dugnadsnett.no&lt;/a&gt; to
coordinate the work.  See also the NUUG blog post
&lt;a href=&quot;http://www.nuug.no/news/E_postliste_og_IRC_kanal_for_Dugnadsnett_for_alle_i_Oslo.shtml&quot;&gt;announcing
the mailing list and IRC channel&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>New chrpath release 0.15</title>
                <link>http://people.skolelinux.org/pere/blog/New_chrpath_release_0_15.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/New_chrpath_release_0_15.html</guid>
                <pubDate>Sun, 24 Nov 2013 09:30:00 +0100</pubDate>
                <description>&lt;p&gt;After many years break from the package and a vain hope that
development would be continued by someone else, I finally pulled my
acts together this morning and wrapped up a new release of chrpath,
the command line tool to modify the rpath and runpath of already
compiled ELF programs.  The update was triggered by the persistence of
Isha Vishnoi at IBM, which needed a new config.guess file to get
support for the ppc64le architecture (powerpc 64-bit Little Endian) he
is working on.  I checked the
&lt;a href=&quot;http://packages.qa.debian.org/chrpath&quot;&gt;Debian&lt;/a&gt;,
&lt;a href=&quot;https://launchpad.net/ubuntu/+source/chrpath&quot;&gt;Ubuntu&lt;/a&gt; and
&lt;a href=&quot;https://admin.fedoraproject.org/pkgdb/acls/name/chrpath&quot;&gt;Fedora&lt;/a&gt;
packages for interesting patches (failed to find the source from
OpenSUSE and Mandriva packages), and found quite a few nice fixes.
These are the release notes:&lt;/p&gt;

&lt;p&gt;New in 0.15 released 2013-11-24:&lt;/p&gt;

&lt;ul&gt;

  &lt;li&gt;Updated config.sub and config.guess from the GNU project to work
   with newer architectures.  Thanks to isha vishnoi for the heads
   up.&lt;/li&gt;

  &lt;li&gt;Updated README with current URLs.&lt;/li&gt;

  &lt;li&gt;Added byteswap fix found in Ubuntu, credited Jeremy Kerr and
   Matthias Klose.&lt;/li&gt;

  &lt;li&gt;Added missing help for -k|--keepgoing option, using patch by
   Petr Machata found in Fedora.&lt;/li&gt;

  &lt;li&gt;Rewrite removal of RPATH/RUNPATH to make sure the entry in
   .dynamic is a NULL terminated string.  Based on patch found in
   Fedora credited Axel Thimm and Christian Krause.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;You can
&lt;a href=&quot;https://alioth.debian.org/frs/?group_id=31052&quot;&gt;download the
new version 0.15 from alioth&lt;/a&gt;.  Please let us know via the Alioth
project if something is wrong with the new release.  The test suite
did not discover any old errors, so if you find a new one, please also
include a testsuite check.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>All drones should be radio marked with what they do and who they belong to</title>
                <link>http://people.skolelinux.org/pere/blog/All_drones_should_be_radio_marked_with_what_they_do_and_who_they_belong_to.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/All_drones_should_be_radio_marked_with_what_they_do_and_who_they_belong_to.html</guid>
                <pubDate>Thu, 21 Nov 2013 15:40:00 +0100</pubDate>
                <description>&lt;p&gt;Drones, flying robots, are getting more and more popular.  The most
know ones are the killer drones used by some government to murder
people they do not like without giving them the chance of a fair
trial, but the technology have many good uses too, from mapping and
forest maintenance to photography and search and rescue.  I am sure it
is just a question of time before &quot;bad drones&quot; are in the hands of
private enterprises and not only state criminals but petty criminals
too.  The drone technology is very useful and very dangerous.  To have
some control over the use of drones, I agree with Daniel Suarez in his
TED talk
&quot;&lt;a href=&quot;https://archive.org/details/DanielSuarez_2013G&quot;&gt;The kill
decision shouldn&#39;t belong to a robot&lt;/a&gt;&quot;, where he suggested this
little gem to keep the good while limiting the bad use of drones:&lt;/p&gt;
 
&lt;blockquote&gt;

&lt;p&gt;Each robot and drone should have a cryptographically signed
I.D. burned in at the factory that can be used to track its movement
through public spaces. We have license plates on cars, tail numbers on
aircraft. This is no different. And every citizen should be able to
download an app that shows the population of drones and autonomous
vehicles moving through public spaces around them, both right now and
historically. And civic leaders should deploy sensors and civic drones
to detect rogue drones, and instead of sending killer drones of their
own up to shoot them down, they should notify humans to their
presence. And in certain very high-security areas, perhaps civic
drones would snare them and drag them off to a bomb disposal facility.&lt;/p&gt;

&lt;p&gt;But notice, this is more an immune system than a weapons system. It
would allow us to avail ourselves of the use of autonomous vehicles
and drones while still preserving our open, civil society.&lt;/p&gt;

&lt;/blockquote&gt;

&lt;p&gt;The key is that &lt;em&gt;every citizen&lt;/em&gt; should be able to read the
radio beacons sent from the drones in the area, to be able to check
both the government and others use of drones.  For such control to be
effective, everyone must be able to do it.  What should such beacon
contain?  At least formal owner, purpose, contact information and GPS
location.  Probably also the origin and target position of the current
flight.  And perhaps some registration number to be able to look up
the drone in a central database tracking their movement.  Robots
should not have privacy.  It is people who need privacy.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Lets make a wireless community network in Oslo!</title>
                <link>http://people.skolelinux.org/pere/blog/Lets_make_a_wireless_community_network_in_Oslo_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lets_make_a_wireless_community_network_in_Oslo_.html</guid>
                <pubDate>Wed, 13 Nov 2013 21:00:00 +0100</pubDate>
                <description>&lt;p&gt;Today NUUG and Hackeriet announced
&lt;a href=&quot;http://www.nuug.no/news/Bli_med___bygge_dugnadsnett_for_alle_i_Oslo.shtml&quot;&gt;our
plans to join forces and create a wireless community network in
Oslo&lt;/a&gt;.  The workshop to help people get started will take place
Thursday 2013-11-28, but we already are collecting the geolocation of
people joining forces to make this happen.  We have
&lt;a href=&quot;https://github.com/petterreinholdtsen/meshfx-node/blob/master/oslo-nodes.geojson&quot;&gt;9
locations plotted on the map&lt;/a&gt;, but we will need more before we have
a connected mesh spread across Oslo.  If this sound interesting to
you, please join us at the workshop.  If you are too impatient to wait
15 days, please join us on the IRC channel
&lt;a href=&quot;irc://irc.freenode.net/%23nuug&quot;&gt;#nuug on irc.freenode.net&lt;/a&gt;
right away. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Running TP-Link MR3040 as a batman-adv mesh node using openwrt</title>
                <link>http://people.skolelinux.org/pere/blog/Running_TP_Link_MR3040_as_a_batman_adv_mesh_node_using_openwrt.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Running_TP_Link_MR3040_as_a_batman_adv_mesh_node_using_openwrt.html</guid>
                <pubDate>Sun, 10 Nov 2013 23:00:00 +0100</pubDate>
                <description>&lt;p&gt;Continuing my research into mesh networking, I was recommended to
use TP-Link 3040 and 3600 access points as mesh nodes, and the pair I
bought arrived on Friday.  Here are my notes on how to set up the
MR3040 as a mesh node using
&lt;a href=&quot;http://www.openwrt.org/&quot;&gt;OpenWrt&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I started by following the instructions on the OpenWRT wiki for
&lt;a href=&quot;http://wiki.openwrt.org/toh/tp-link/tl-mr3040&quot;&gt;TL-MR3040&lt;/a&gt;,
and downloaded
&lt;a href=&quot;http://downloads.openwrt.org/snapshots/trunk/ar71xx/openwrt-ar71xx-generic-tl-mr3040-v2-squashfs-factory.bin&quot;&gt;the
recommended firmware image&lt;/a&gt;
(openwrt-ar71xx-generic-tl-mr3040-v2-squashfs-factory.bin) and
uploaded it into the original web interface.  The flashing went fine,
and the machine was available via telnet on the ethernet port.  After
logging in and setting the root password, ssh was available and I
could start to set it up as a batman-adv mesh node.&lt;/p&gt;

&lt;p&gt;I started off by reading the instructions from
&lt;a href=&quot;http://wirelessafrica.meraka.org.za/wiki/index.php?title=Antoine&#39;s_Research&quot;&gt;Wireless
Africa&lt;/a&gt;, which had quite a lot of useful information, but
eventually I followed the recipe from the Open Mesh wiki for
&lt;a href=&quot;http://www.open-mesh.org/projects/batman-adv/wiki/Batman-adv-openwrt-config&quot;&gt;using
batman-adv on OpenWrt&lt;/a&gt;.  A small snag was the fact that the
&lt;tt&gt;opkg install kmod-batman-adv&lt;/tt&gt; command did not work as it
should.  The batman-adv kernel module would fail to load because its
dependency crc16 was not already loaded.  I
&lt;a href=&quot;https://dev.openwrt.org/ticket/14452&quot;&gt;reported the bug&lt;/a&gt; to
the openwrt project and hope it will be fixed soon.  But the problem
only seem to affect initial testing of batman-adv, as configuration
seem to work when booting from scratch.&lt;/p&gt;

&lt;p&gt;The setup is done using files in /etc/config/.  I did not bridge
the Ethernet and mesh interfaces this time, to be able to hook up the
box on my local network and log into it for configuration updates.
The following files were changed and look like this after modifying
them:&lt;/p&gt;

&lt;p&gt;&lt;tt&gt;/etc/config/network&lt;/tt&gt;&lt;/p&gt;

&lt;pre&gt;

config interface &#39;loopback&#39;
        option ifname &#39;lo&#39;
        option proto &#39;static&#39;
        option ipaddr &#39;127.0.0.1&#39;
        option netmask &#39;255.0.0.0&#39;

config globals &#39;globals&#39;
        option ula_prefix &#39;fdbf:4c12:3fed::/48&#39;

config interface &#39;lan&#39;
        option ifname &#39;eth0&#39;
        option type &#39;bridge&#39;
        option proto &#39;dhcp&#39;
        option ipaddr &#39;192.168.1.1&#39;
        option netmask &#39;255.255.255.0&#39;
        option hostname &#39;tl-mr3040&#39;
        option ip6assign &#39;60&#39;

config interface &#39;mesh&#39;
        option ifname &#39;adhoc0&#39;
        option mtu &#39;1528&#39;
        option proto &#39;batadv&#39;
        option mesh &#39;bat0&#39;
&lt;/pre&gt;

&lt;p&gt;&lt;tt&gt;/etc/config/wireless&lt;/tt&gt;&lt;/p&gt;
&lt;pre&gt;

config wifi-device &#39;radio0&#39;
        option type &#39;mac80211&#39;
        option channel &#39;11&#39;
        option hwmode &#39;11ng&#39;
        option path &#39;platform/ar933x_wmac&#39;
        option htmode &#39;HT20&#39;
        list ht_capab &#39;SHORT-GI-20&#39;
        list ht_capab &#39;SHORT-GI-40&#39;
        list ht_capab &#39;RX-STBC1&#39;
        list ht_capab &#39;DSSS_CCK-40&#39;
        option disabled &#39;0&#39;

config wifi-iface &#39;wmesh&#39;
        option device &#39;radio0&#39;
        option ifname &#39;adhoc0&#39;
        option network &#39;mesh&#39;
        option encryption &#39;none&#39;
        option mode &#39;adhoc&#39;
        option bssid &#39;02:BA:00:00:00:01&#39;
        option ssid &#39;meshfx@hackeriet&#39;
&lt;/pre&gt;
&lt;p&gt;&lt;tt&gt;/etc/config/batman-adv&lt;/tt&gt;&lt;/p&gt;
&lt;pre&gt;

config &#39;mesh&#39; &#39;bat0&#39;
        option interfaces &#39;adhoc0&#39;
        option &#39;aggregated_ogms&#39;
        option &#39;ap_isolation&#39;
        option &#39;bonding&#39;
        option &#39;fragmentation&#39;
        option &#39;gw_bandwidth&#39;
        option &#39;gw_mode&#39;
        option &#39;gw_sel_class&#39;
        option &#39;log_level&#39;
        option &#39;orig_interval&#39;
        option &#39;vis_mode&#39;
        option &#39;bridge_loop_avoidance&#39;
        option &#39;distributed_arp_table&#39;
        option &#39;network_coding&#39;
        option &#39;hop_penalty&#39;

# yet another batX instance
# config &#39;mesh&#39; &#39;bat5&#39;
#       option &#39;interfaces&#39; &#39;second_mesh&#39;
&lt;/pre&gt;

&lt;p&gt;The mesh node is now operational.  I have yet to test its range,
but I hope it is good.  I have not yet tested the TP-Link 3600 box
still wrapped up in plastic.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian init.d boot script example for rsyslog</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html</guid>
                <pubDate>Sat, 2 Nov 2013 22:40:00 +0100</pubDate>
                <description>&lt;p&gt;If one of the points of switching to a new init system in Debian is
&lt;a href=&quot;http://thomas.goirand.fr/blog/?p=147&quot;&gt;to get rid of huge
init.d scripts&lt;/a&gt;, I doubt we need to switch away from sysvinit and
init.d scripts at all.  Here is an example init.d script, ie a rewrite
of /etc/init.d/rsyslog:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
#!/lib/init/init-d-script
### BEGIN INIT INFO
# Provides:          rsyslog
# Required-Start:    $remote_fs $time
# Required-Stop:     umountnfs $time
# X-Stop-After:      sendsigs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: enhanced syslogd
# Description:       Rsyslog is an enhanced multi-threaded syslogd.
#                    It is quite compatible to stock sysklogd and can be 
#                    used as a drop-in replacement.
### END INIT INFO
DESC=&quot;enhanced syslogd&quot;
DAEMON=/usr/sbin/rsyslogd
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Pretty minimalistic to me... For the record, the original sysv-rc
script was 137 lines, and the above is just 15 lines, most of it meta
info/comments.&lt;/p&gt;

&lt;p&gt;How to do this, you ask?  Well, one create a new script
/lib/init/init-d-script looking something like this:

&lt;p&gt;&lt;pre&gt;
#!/bin/sh

# Define LSB log_* functions.
# Depend on lsb-base (&gt;= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service

#
do_start()
{
        # Return
        #   0 if daemon has been started
        #   1 if daemon was already running
        #   2 if daemon could not be started
        start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test &gt; /dev/null \
                || return 1
        start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
                $DAEMON_ARGS \
                || return 2
        # Add code here, if necessary, that waits for the process to be ready
        # to handle requests from services started subsequently which depend
        # on this one.  As a last resort, sleep for some time.
}

#
# Function that stops the daemon/service
#
do_stop()
{
        # Return
        #   0 if daemon has been stopped
        #   1 if daemon was already stopped
        #   2 if daemon could not be stopped
        #   other if a failure occurred
        start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
        RETVAL=&quot;$?&quot;
        [ &quot;$RETVAL&quot; = 2 ] &amp;&amp; return 2
        # Wait for children to finish too if this is a daemon that forks
        # and if the daemon is only ever run from this initscript.
        # If the above conditions are not satisfied then add some other code
        # that waits for the process to drop all resources that could be
        # needed by services started subsequently.  A last resort is to
        # sleep for some time.
        start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
        [ &quot;$?&quot; = 2 ] &amp;&amp; return 2
        # Many daemons don&#39;t delete their pidfiles when they exit.
        rm -f $PIDFILE
        return &quot;$RETVAL&quot;
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
        #
        # If the daemon can reload its configuration without
        # restarting (for example, when it is sent a SIGHUP),
        # then implement that here.
        #
        start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
        return 0
}

SCRIPTNAME=$1
scriptbasename=&quot;$(basename $1)&quot;
echo &quot;SN: $scriptbasename&quot;
if [ &quot;$scriptbasename&quot; != &quot;init-d-library&quot; ] ; then
    script=&quot;$1&quot;
    shift
    . $script
else
    exit 0
fi

NAME=$(basename $DAEMON)
PIDFILE=/var/run/$NAME.pid

# Exit if the package is not installed
#[ -x &quot;$DAEMON&quot; ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] &amp;&amp; . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

case &quot;$1&quot; in
  start)
        [ &quot;$VERBOSE&quot; != no ] &amp;&amp; log_daemon_msg &quot;Starting $DESC&quot; &quot;$NAME&quot;
        do_start
        case &quot;$?&quot; in
                0|1) [ &quot;$VERBOSE&quot; != no ] &amp;&amp; log_end_msg 0 ;;
                2) [ &quot;$VERBOSE&quot; != no ] &amp;&amp; log_end_msg 1 ;;
        esac
        ;;
  stop)
        [ &quot;$VERBOSE&quot; != no ] &amp;&amp; log_daemon_msg &quot;Stopping $DESC&quot; &quot;$NAME&quot;
        do_stop
        case &quot;$?&quot; in
                0|1) [ &quot;$VERBOSE&quot; != no ] &amp;&amp; log_end_msg 0 ;;
                2) [ &quot;$VERBOSE&quot; != no ] &amp;&amp; log_end_msg 1 ;;
        esac
        ;;
  status)
        status_of_proc &quot;$DAEMON&quot; &quot;$NAME&quot; &amp;&amp; exit 0 || exit $?
        ;;
  #reload|force-reload)
        #
        # If do_reload() is not implemented then leave this commented out
        # and leave &#39;force-reload&#39; as an alias for &#39;restart&#39;.
        #
        #log_daemon_msg &quot;Reloading $DESC&quot; &quot;$NAME&quot;
        #do_reload
        #log_end_msg $?
        #;;
  restart|force-reload)
        #
        # If the &quot;reload&quot; option is implemented then remove the
        # &#39;force-reload&#39; alias
        #
        log_daemon_msg &quot;Restarting $DESC&quot; &quot;$NAME&quot;
        do_stop
        case &quot;$?&quot; in
          0|1)
                do_start
                case &quot;$?&quot; in
                        0) log_end_msg 0 ;;
                        1) log_end_msg 1 ;; # Old process is still running
                        *) log_end_msg 1 ;; # Failed to start
                esac
                ;;
          *)
                # Failed to stop
                log_end_msg 1
                ;;
        esac
        ;;
  *)
        echo &quot;Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}&quot; &gt;&amp;2
        exit 3
        ;;
esac

:
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;It is based on /etc/init.d/skeleton, and could be improved quite a
lot.  I did not really polish the approach, so it might not always
work out of the box, but you get the idea.  I did not try very hard to
optimize it nor make it more robust either.&lt;/p&gt;

&lt;p&gt;A better argument for switching init system in Debian than reducing
the size of init scripts (which is a good thing to do anyway), is to
get boot system that is able to handle the kernel events sensibly and
robustly, and do not depend on the boot to run sequentially.  The boot
and the kernel have not behaved sequentially in years.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Browser plugin for SPICE (spice-xpi) uploaded to Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Browser_plugin_for_SPICE__spice_xpi__uploaded_to_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Browser_plugin_for_SPICE__spice_xpi__uploaded_to_Debian.html</guid>
                <pubDate>Fri, 1 Nov 2013 11:00:00 +0100</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.spice-space.org/&quot;&gt;The SPICE protocol&lt;/a&gt; for
remote display access is the preferred solution with oVirt and RedHat
Enterprise Virtualization, and I was sad to discover the other day
that the browser plugin needed to use these systems seamlessly was
missing in Debian.  The &lt;a href=&quot;http://bugs.debian.org/668284&quot;&gt;request
for a package&lt;/a&gt; was from 2012-04-10 with no progress since
2013-04-01, so I decided to wrap up a package based on the great work
from Cajus Pollmeier and put it in a collab-maint maintained git
repository to get a package I could use.  I would very much like
others to help me maintain the package (or just take over, I do not
mind), but as no-one had volunteered so far, I just uploaded it to
NEW.  I hope it will be available in Debian in a few days.&lt;/p&gt;

&lt;p&gt;The source is now available from
&lt;a href=&quot;http://anonscm.debian.org/gitweb/?p=collab-maint/spice-xpi.git;a=summary&quot;&gt;http://anonscm.debian.org/gitweb/?p=collab-maint/spice-xpi.git;a=summary&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Teaching vmdebootstrap to create Raspberry Pi SD card images</title>
                <link>http://people.skolelinux.org/pere/blog/Teaching_vmdebootstrap_to_create_Raspberry_Pi_SD_card_images.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Teaching_vmdebootstrap_to_create_Raspberry_Pi_SD_card_images.html</guid>
                <pubDate>Sun, 27 Oct 2013 17:00:00 +0100</pubDate>
                <description>&lt;p&gt;The
&lt;a href=&quot;http://packages.qa.debian.org/v/vmdebootstrap.html&quot;&gt;vmdebootstrap&lt;/a&gt;
program is a a very nice system to create virtual machine images.  It
create a image file, add a partition table, mount it and run
debootstrap in the mounted directory to create a Debian system on a
stick.  Yesterday, I decided to try to teach it how to make images for
&lt;a href=&quot;https://wiki.debian.org/RaspberryPi&quot;&gt;Raspberry Pi&lt;/a&gt;, as part
of a plan to simplify the build system for
&lt;a href=&quot;https://wiki.debian.org/FreedomBox&quot;&gt;the FreedomBox
project&lt;/a&gt;.  The FreedomBox project already uses vmdebootstrap for
the virtualbox images, but its current build system made multistrap
based system for Dreamplug images, and it is lacking support for
Raspberry Pi.&lt;/p&gt;

&lt;p&gt;Armed with the knowledge on how to build &quot;foreign&quot; (aka non-native
architecture) chroots for Raspberry Pi, I dived into the vmdebootstrap
code and adjusted it to be able to build armel images on my amd64
Debian laptop.  I ended up giving vmdebootstrap five new options,
allowing me to replicate the image creation process I use to make
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/A_Raspberry_Pi_based_batman_adv_Mesh_network_node.html&quot;&gt;Debian
Jessie based mesh node images for the Raspberry Pi&lt;/a&gt;.  First, the
&lt;tt&gt;--foreign /path/to/binfm_handler&lt;/tt&gt; option tell vmdebootstrap to
call debootstrap with --foreign and to copy the handler into the
generated chroot before running the second stage.  This allow
vmdebootstrap to create armel images on an amd64 host.  Next I added
two new options &lt;tt&gt;--bootsize size&lt;/tt&gt; and &lt;tt&gt;--boottype
fstype&lt;/tt&gt; to teach it to create a separate /boot/ partition with the
given file system type, allowing me to create an image with a vfat
partition for the /boot/ stuff.  I also added a &lt;tt&gt;--variant
variant&lt;/tt&gt; option to allow me to create smaller images without the
Debian base system packages installed.  Finally, I added an option
&lt;tt&gt;--no-extlinux&lt;/tt&gt; to tell vmdebootstrap to not install extlinux
as a boot loader.  It is not needed on the Raspberry Pi and probably
most other non-x86 architectures.  The changes were accepted by the
upstream author of vmdebootstrap yesterday and today, and is now
available from
&lt;a href=&quot;http://git.liw.fi/cgi-bin/cgit/cgit.cgi/vmdebootstrap/&quot;&gt;the
upstream project page&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;To use it to build a Raspberry Pi image using Debian Jessie, first
create a small script (the customize script) to add the non-free
binary blob needed to boot the Raspberry Pi and the APT source
list:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
#!/bin/sh
set -e # Exit on first error
rootdir=&quot;$1&quot;
cd &quot;$rootdir&quot;
cat &amp;lt;&amp;lt;EOF &gt; etc/apt/sources.list
deb http://http.debian.net/debian/ jessie main contrib non-free
EOF
# Install non-free binary blob needed to boot Raspberry Pi.  This
# install a kernel somewhere too.
wget https://raw.github.com/Hexxeh/rpi-update/master/rpi-update \
    -O $rootdir/usr/bin/rpi-update
chmod a+x $rootdir/usr/bin/rpi-update
mkdir -p $rootdir/lib/modules
touch $rootdir/boot/start.elf
chroot $rootdir rpi-update
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Next, fetch the latest vmdebootstrap script and call it like this
to build the image:&lt;/p&gt;

&lt;pre&gt;
sudo ./vmdebootstrap \
    --variant minbase \
    --arch armel \
    --distribution jessie \
    --mirror http://http.debian.net/debian \
    --image test.img \
    --size 600M \
    --bootsize 64M \
    --boottype vfat \
    --log-level debug \
    --verbose \
    --no-kernel \
    --no-extlinux \
    --root-password raspberry \
    --hostname raspberrypi \
    --foreign /usr/bin/qemu-arm-static \
    --customize `pwd`/customize \
    --package netbase \
    --package git-core \
    --package binutils \
    --package ca-certificates \
    --package wget \
    --package kmod
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The list of packages being installed are the ones needed by
rpi-update to make the image bootable on the Raspberry Pi, with the
exception of netbase, which is needed by debootstrap to find
/etc/hosts with the minbase variant.  I really wish there was a way to
set up an Raspberry Pi using only packages in the Debian archive, but
that is not possible as far as I know, because it boots from the GPU
using a non-free binary blob.&lt;/p&gt;

&lt;p&gt;The build host need debootstrap, kpartx and qemu-user-static and
probably a few others installed.  I have not checked the complete
build dependency list.&lt;/p&gt;

&lt;p&gt;The resulting image will not use the hardware floating point unit
on the Raspberry PI, because the armel architecture in Debian is not
optimized for that use.  So the images created will be a bit slower
than &lt;a href=&quot;http://www.raspbian.org/&quot;&gt;Raspbian&lt;/a&gt; based images.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A Raspberry Pi based batman-adv Mesh network node</title>
                <link>http://people.skolelinux.org/pere/blog/A_Raspberry_Pi_based_batman_adv_Mesh_network_node.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_Raspberry_Pi_based_batman_adv_Mesh_network_node.html</guid>
                <pubDate>Mon, 21 Oct 2013 11:40:00 +0200</pubDate>
                <description>&lt;p&gt;The last few days I have been experimenting with
&lt;a href=&quot;http://www.open-mesh.org/projects/batman-adv/wiki&quot;&gt;the
batman-adv mesh technology&lt;/a&gt;.  I want to gain some experience to see
if it will fit &lt;a href=&quot;https://wiki.debian.org/FreedomBox&quot;&gt;the
Freedombox project&lt;/a&gt;, and together with my neighbors try to build a
mesh network around the park where I live.  Batman-adv is a layer 2
mesh system (&quot;ethernet&quot; in other words), where the mesh network appear
as if all the mesh clients are connected to the same switch.&lt;/p&gt;

&lt;p&gt;My hardware of choice was the Linksys WRT54GL routers I had lying
around, but I&#39;ve been unable to get them working with batman-adv.  So
instead, I started playing with a
&lt;a href=&quot;http://www.raspberrypi.org/&quot;&gt;Raspberry Pi&lt;/a&gt;, and tried to
get it working as a mesh node.  My idea is to use it to create a mesh
node which function as a switch port, where everything connected to
the Raspberry Pi ethernet plug is connected (bridged) to the mesh
network.  This allow me to hook a wifi base station like the Linksys
WRT54GL to the mesh by plugging it into a Raspberry Pi, and allow
non-mesh clients to hook up to the mesh.  This in turn is useful for
Android phones using &lt;a href=&quot;http://servalproject.org/&quot;&gt;the Serval
Project&lt;/a&gt; voip client, allowing every one around the playground to
phone and message each other for free.  The reason is that Android
phones do not see ad-hoc wifi networks (they are filtered away from
the GUI view), and can not join the mesh without being rooted.  But if
they are connected using a normal wifi base station, they can talk to
every client on the local network.&lt;/p&gt;

&lt;p&gt;To get this working, I&#39;ve created a debian package
&lt;a href=&quot;https://github.com/petterreinholdtsen/meshfx-node&quot;&gt;meshfx-node&lt;/a&gt;
and a script
&lt;a href=&quot;https://github.com/petterreinholdtsen/meshfx-node/blob/master/build-rpi-mesh-node&quot;&gt;build-rpi-mesh-node&lt;/a&gt;
to create the Raspberry Pi boot image.  I&#39;m using Debian Jessie (and
not Raspbian), to get more control over the packages available.
Unfortunately a huge binary blob need to be inserted into the boot
image to get it booting, but I&#39;ll ignore that for now.  Also, as
Debian lack support for the CPU features available in the Raspberry
Pi, the system do not use the hardware floating point unit.  I hope
the routing performance isn&#39;t affected by the lack of hardware FPU
support.&lt;/p&gt;

&lt;p&gt;To create an image, run the following with a sudo enabled user
after inserting the target SD card into the build machine:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
% wget -O build-rpi-mesh-node \
    https://raw.github.com/petterreinholdtsen/meshfx-node/master/build-rpi-mesh-node
% sudo bash -x ./build-rpi-mesh-node &gt; build.log 2&gt;&amp;1
% dd if=/root/rpi/rpi_basic_jessie_$(date +%Y%m%d).img of=/dev/mmcblk0 bs=1M
%
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Booting with the resulting SD card on a Raspberry PI with a USB
wifi card inserted should give you a mesh node.  At least it does for
me with a the wifi card I am using. The default mesh settings are the
ones used by the Oslo mesh project at Hackeriet, as I mentioned in
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Oslo_community_mesh_network___with_NUUG_and_Hackeriet_at_Hausmania.html&quot;&gt;an
earlier blog post about this mesh testing&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The mesh node was not horribly expensive either.  I bought
everything over the counter in shops nearby.  If I had ordered online
from the lowest bidder, the price should be significantly lower:&lt;/p&gt;

&lt;p&gt;&lt;table&gt;

&lt;tr&gt;&lt;th&gt;Supplier&lt;/th&gt;&lt;th&gt;Model&lt;/th&gt;&lt;th&gt;NOK&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Teknikkmagasinet&lt;/td&gt;&lt;td&gt;Raspberry Pi model B&lt;/td&gt;&lt;td&gt;349.90&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Teknikkmagasinet&lt;/td&gt;&lt;td&gt;Raspberry Pi type B case&lt;/td&gt;&lt;td&gt;99.90&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Lefdal&lt;/td&gt;&lt;td&gt;Jensen Air:Link 25150&lt;/td&gt;&lt;td&gt;295.-&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Clas Ohlson&lt;/td&gt;&lt;td&gt;Kingston 16 GB SD card&lt;/td&gt;&lt;td&gt;199.-&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Total cost&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;td&gt;943.80&lt;/td&gt;&lt;/tr&gt;

&lt;/table&gt;&lt;/p&gt;

&lt;p&gt;Now my mesh network at home consist of one laptop in the basement
connected to my production network, one Raspberry Pi node on the 1th
floor that can be seen by my neighbor across the park, and one
play-node I use to develop the image building script.  And some times
I hook up my work horse laptop to the mesh to test it.  I look forward
to figuring out what kind of latency the batman-adv setup will give,
and how much packet loss we will experience around the park. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Perl library to control the Spykee robot moved to github</title>
                <link>http://people.skolelinux.org/pere/blog/Perl_library_to_control_the_Spykee_robot_moved_to_github.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Perl_library_to_control_the_Spykee_robot_moved_to_github.html</guid>
                <pubDate>Sat, 19 Oct 2013 10:20:00 +0200</pubDate>
                <description>&lt;p&gt;Back in 2010, I created a Perl library to talk to
&lt;a href=&quot;http://en.wikipedia.org/wiki/Spykee&quot;&gt;the Spykee robot&lt;/a&gt;
(with two belts, wifi, USB and Linux) and made it available from my
web page.  Today I concluded that it should move to a site that is
easier to use to cooperate with others, and moved it to github.  If
you got a Spykee robot, you might want to check out
&lt;a href=&quot;https://github.com/petterreinholdtsen/libspykee-perl&quot;&gt;the
libspykee-perl github repository&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Good causes: Debian Outreach Program for Women, EFF documenting the spying and Open access in Norway</title>
                <link>http://people.skolelinux.org/pere/blog/Good_causes__Debian_Outreach_Program_for_Women__EFF_documenting_the_spying_and_Open_access_in_Norway.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Good_causes__Debian_Outreach_Program_for_Women__EFF_documenting_the_spying_and_Open_access_in_Norway.html</guid>
                <pubDate>Tue, 15 Oct 2013 21:30:00 +0200</pubDate>
                <description>&lt;p&gt;The last few days I came across a few good causes that should get
wider attention.  I recommend signing and donating to each one of
these. :)&lt;/p&gt;

&lt;p&gt;Via &lt;a href=&quot;http://www.debian.org/News/weekly/2013/18/&quot;&gt;Debian
Project News for 2013-10-14&lt;/a&gt; I came across the Outreach Program for
Women program which is a Google Summer of Code like initiative to get
more women involved in free software.  One debian sponsor has offered
to match &lt;a href=&quot;http://debian.ch/opw2013&quot;&gt;any donation done to Debian
earmarked&lt;/a&gt; for this initiative.  I donated a few minutes ago, and
hope you will to. :)&lt;/p&gt;

&lt;p&gt;And the Electronic Frontier Foundation just announced plans to
create &lt;a href=&quot;https://supporters.eff.org/donate/nsa-videos&quot;&gt;video
documentaries about the excessive spying&lt;/a&gt; on every Internet user that
take place these days, and their need to fund the work.  I&#39;ve already
donated.  Are you next?&lt;/p&gt;

&lt;p&gt;For my Norwegian audience, the organisation Studentenes og
Akademikernes Internasjonale Hjelpefond is collecting signatures for a
statement under the heading
&lt;a href=&quot;http://saih.no/Bloggers_United/&quot;&gt;Bloggers United for Open
Access&lt;/a&gt; for those of us asking for more focus on open access in the
Norwegian government.  So far 499 signatures.  I hope you will sign it
too.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Oslo community mesh network - with NUUG and Hackeriet at Hausmania</title>
                <link>http://people.skolelinux.org/pere/blog/Oslo_community_mesh_network___with_NUUG_and_Hackeriet_at_Hausmania.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Oslo_community_mesh_network___with_NUUG_and_Hackeriet_at_Hausmania.html</guid>
                <pubDate>Fri, 11 Oct 2013 14:10:00 +0200</pubDate>
                <description>&lt;p&gt;Wireless mesh networks are self organising and self healing
networks that can be used to connect computers across small and large
areas, depending on the radio technology used.  Normal wifi equipment
can be used to create home made radio networks, and there are several
successful examples like
&lt;a href=&quot;http://www.freifunk.net/&quot;&gt;Freifunk&lt;/a&gt; and
&lt;a href=&quot;http://www.awmn.net/&quot;&gt;Athens Wireless Metropolitan Network&lt;/a&gt;
(see
&lt;a href=&quot;http://en.wikipedia.org/wiki/List_of_wireless_community_networks_by_region#Greece&quot;&gt;wikipedia
for a large list&lt;/a&gt;) around the globe.  To give you an idea how it
work, check out the nice overview of the Kiel Freifunk community which
can be seen from their
&lt;a href=&quot;http://freifunk.in-kiel.de/ffmap/nodes.html&quot;&gt;dynamically
updated node graph and map&lt;/a&gt;, where one can see how the mesh nodes
automatically handle routing and recover from nodes disappearing.
There is also a small community mesh network group in Oslo, Norway,
and that is the main topic of this blog post.&lt;/p&gt;

&lt;p&gt;I&#39;ve wanted to check out mesh networks for a while now, and hoped
to do it as part of my involvement with the &lt;a
href=&quot;http://www.nuug.no/&quot;&gt;NUUG member organisation&lt;/a&gt; community, and
my recent involvement in
&lt;a href=&quot;https://wiki.debian.org/FreedomBox&quot;&gt;the Freedombox project&lt;/a&gt;
finally lead me to give mesh networks some priority, as I suspect a
Freedombox should use mesh networks to connect neighbours and family
when possible, given that most communication between people are
between those nearby (as shown for example by research on Facebook
communication patterns).  It also allow people to communicate without
any central hub to tap into for those that want to listen in on the
private communication of citizens, which have become more and more
important over the years.&lt;/p&gt;

&lt;p&gt;So far I have only been able to find one group of people in Oslo
working on community mesh networks, over at the hack space
&lt;a href=&quot;http://hackeriet.no/&quot;&gt;Hackeriet&lt;/a&gt; at Husmania.  They seem to
have started with some Freifunk based effort using OLSR, called
&lt;a href=&quot;http://oslo.freifunk.net/index.php?title=Main_Page&quot;&gt;the Oslo
Freifunk project&lt;/a&gt;, but that effort is now dead and the people
behind it have moved on to a batman-adv based system called
&lt;a href=&quot;http://meshfx.org/trac&quot;&gt;meshfx&lt;/a&gt;.  Unfortunately the wiki
site for the Oslo Freifunk project is no longer possible to update to
reflect this fact, so the old project page can&#39;t be updated to point to
the new project.  A while back, the people at Hackeriet invited people
from the Freifunk community to Oslo to talk about mesh networks.  I
came across this video where Hans Jørgen Lysglimt interview the
speakers about this talk (from
&lt;a href=&quot;https://www.youtube.com/watch?v=N2Kd7CLkhSY&quot;&gt;youtube&lt;/a&gt;):&lt;/p&gt;

&lt;p&gt;&lt;iframe width=&quot;420&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/N2Kd7CLkhSY&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;&lt;/p&gt;

&lt;p&gt;I mentioned OLSR and batman-adv, which are mesh routing protocols.
There are heaps of different protocols, and I am still struggling to
figure out which one would be &quot;best&quot; for some definitions of best, but
given that the community mesh group in Oslo is so small, I believe it
is best to hook up with the existing one instead of trying to create a
completely different setup, and thus I have decided to focus on
batman-adv for now.  It sure help me to  know that the very cool
&lt;a href=&quot;http://www.servalproject.org/&quot;&gt;Serval project in Australia&lt;/a&gt;
is using batman-adv as their meshing technology when it create a self
organizing and self healing telephony system for disaster areas and
less industrialized communities.  Check out this cool video presenting
that project (from
&lt;a href=&quot;https://www.youtube.com/watch?v=30qNfzJCQOA&quot;&gt;youtube&lt;/a&gt;):&lt;/p&gt;

&lt;p&gt;&lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/30qNfzJCQOA&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;&lt;/p&gt;

&lt;p&gt;According to the wikipedia page on
&lt;a href=&quot;http://en.wikipedia.org/wiki/Wireless_mesh_network&quot;&gt;Wireless
mesh network&lt;/a&gt; there are around 70 competing schemes for routing
packets across mesh networks, and OLSR, B.A.T.M.A.N. and
B.A.T.M.A.N. advanced are protocols used by several free software
based community mesh networks.&lt;/p&gt;

&lt;p&gt;The batman-adv protocol is a bit special, as it provide layer 2
(as in ethernet ) routing, allowing ipv4 and ipv6 to work on the same
network.  One way to think about it is that it provide a mesh based
vlan you can bridge to or handle like any other vlan connected to your
computer.  The required drivers are already in the Linux kernel at
least since Debian Wheezy, and it is fairly easy to set up.  A
&lt;a href=&quot;http://www.open-mesh.org/projects/batman-adv/wiki/Quick-start-guide&quot;&gt;good
introduction&lt;/a&gt; is available from the Open Mesh project.  These are
the key settings needed to join the Oslo meshfx network:&lt;/p&gt;

&lt;p&gt;&lt;table&gt;
&lt;tr&gt;&lt;th&gt;Setting&lt;/th&gt;&lt;th&gt;Value&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Protocol / kernel module&lt;/td&gt;&lt;td&gt;batman-adv&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;ESSID&lt;/td&gt;&lt;td&gt;meshfx@hackeriet&lt;/td&gt;&lt;/tr&gt;
&lt;td&gt;Channel / Frequency&lt;/td&gt;&lt;td&gt;11 / 2462&lt;/td&gt;&lt;/tr&gt;
&lt;td&gt;Cell ID&lt;/td&gt;&lt;td&gt;02:BA:00:00:00:01&lt;/td&gt;
&lt;/table&gt;&lt;/p&gt;

&lt;p&gt;The reason for setting ad-hoc wifi Cell ID is to work around bugs
in firmware used in wifi card and wifi drivers.  (See a nice post from
VillageTelco about
&quot;&lt;a href=&quot;http://tiebing.blogspot.no/2009/12/ad-hoc-cell-splitting-re-post-original.html&quot;&gt;Information
about cell-id splitting, stuck beacons, and failed IBSS merges!&lt;/a&gt;
for details.)  When these settings are activated and you have some
other mesh node nearby, your computer will be connected to the mesh
network and can communicate with any mesh node that is connected to
any of the nodes in your network of nodes. :)&lt;/p&gt;

&lt;p&gt;My initial plan was to reuse my old Linksys WRT54GL as a mesh node,
but that seem to be very hard, as I have not been able to locate a
firmware supporting batman-adv.  If anyone know how to use that old
wifi access point with batman-adv these days, please let me know.&lt;/p&gt;

&lt;p&gt;If you find this project interesting and want to join, please join
us on IRC, either channel
&lt;a href=&quot;irc://irc.freenode.net/#oslohackerspace&quot;&gt;#oslohackerspace&lt;/a&gt;
or &lt;a href=&quot;irc://irc.freenode.net/#nuug&quot;&gt;#nuug&lt;/a&gt; on
irc.freenode.net.&lt;/p&gt;

&lt;p&gt;While investigating mesh networks in Oslo, I came across an old
research paper from the university of Stavanger and Telenor Research
and Innovation called
&lt;a href=&quot;http://folk.uio.no/paalee/publications/netrel-egeland-iswcs-2008.pdf&quot;&gt;The
reliability of wireless backhaul mesh networks&lt;/a&gt; and elsewhere
learned that Telenor have been experimenting with mesh networks at
Grünerløkka in Oslo.  So mesh networks are also interesting for
commercial companies, even though Telenor discovered that it was hard
to figure out a good business plan for mesh networking and as far as I
know have closed down the experiment.  Perhaps Telenor or others would
be interested in a cooperation?&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-10-12&lt;/strong&gt;: I was just
&lt;a href=&quot;http://lists.alioth.debian.org/pipermail/freedombox-discuss/2013-October/005900.html&quot;&gt;told
by the Serval project developers&lt;/a&gt; that they no longer use
batman-adv (but are compatible with it), but their own crypto based
mesh system.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Skolelinux / Debian Edu 7.1 install and overview video from Marcelo Salvador</title>
                <link>http://people.skolelinux.org/pere/blog/Skolelinux___Debian_Edu_7_1_install_and_overview_video_from_Marcelo_Salvador.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Skolelinux___Debian_Edu_7_1_install_and_overview_video_from_Marcelo_Salvador.html</guid>
                <pubDate>Tue, 8 Oct 2013 17:10:00 +0200</pubDate>
                <description>&lt;p&gt;The other day I was pleased and surprised to discover that Marcelo
Salvador had published a
&lt;a href=&quot;https://www.youtube.com/watch?v=w-GgpdqgLFc&quot;&gt;video on
Youtube&lt;/a&gt; showing how to install the standalone Debian Edu /
Skolelinux profile.  This is the profile intended for use at home or
on laptops that should not be integrated into the provided network
services (no central home directory, no Kerberos / LDAP directory etc,
in other word a single user machine).  The result is 11 minutes long,
and show some user applications (seem to be rather randomly picked).
Missed a few of my favorites like celestia, planets and chromium
showing the &lt;a href=&quot;http://www.zygotebody.com/&quot;&gt;Zygote Body 3D model
of the human body&lt;/a&gt;, but I guess he did not know about those or find
other programs more interesting. :) And the video do not show the
advantages I believe is one of the most valuable featuers in Debian
Edu, its central school server making it possible to run hundreds of
computers without hard drives by installing one central
&lt;a href=&quot;http://www.ltsp.org/&quot;&gt;LTSP server&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Anyway, check out the video, embedded below and linked to above:&lt;/p&gt;

&lt;iframe width=&quot;420&quot; height=&quot;315&quot; src=&quot;http://www.youtube.com/embed/w-GgpdqgLFc&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;

&lt;p&gt;Are there other nice videos demonstrating Skolelinux?  Please let
me know. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Finally, Debian Edu Wheezy is released today!</title>
                <link>http://people.skolelinux.org/pere/blog/Finally__Debian_Edu_Wheezy_is_released_today_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Finally__Debian_Edu_Wheezy_is_released_today_.html</guid>
                <pubDate>Sun, 29 Sep 2013 10:20:00 +0200</pubDate>
                <description>&lt;p&gt;A few hours ago, the announcement for the first stable release of
Debian Edu Wheezy went out from the Debian publicity team.  The
complete announcement text can be found at
&lt;a href=&quot;http://www.debian.org/News/2013/20130928&quot;&gt;the Debian News
section&lt;/a&gt;, translated to several languages.  Please check it out.&lt;/p&gt;

&lt;p&gt;There is one minor known problem that we will fix very soon.  One
can not install a amd64 Thin Client Server using PXE, as the /var/
partition is too small.  A workaround is to extend the partition (use
lvresize + resize2fs in tty 2 while installing).&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Videos about the Freedombox project - for inspiration and learning</title>
                <link>http://people.skolelinux.org/pere/blog/Videos_about_the_Freedombox_project___for_inspiration_and_learning.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Videos_about_the_Freedombox_project___for_inspiration_and_learning.html</guid>
                <pubDate>Fri, 27 Sep 2013 14:10:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.freedomboxfoundation.org/&quot;&gt;Freedombox
project&lt;/a&gt; have been going on for a while, and have presented the
vision, ideas and solution several places.  Here is a little
collection of videos of talks and presentation of the project.&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=ukvUz5taxvA&quot;&gt;FreedomBox -
2,5 minute marketing film&lt;/a&gt; (Youtube)&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=SzW25QTVWsE&quot;&gt;Eben Moglen
discusses the Freedombox on CBS news 2011&lt;/a&gt; (Youtube)&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=Ae8SZbxfE0g&quot;&gt;Eben Moglen -
Freedom in the Cloud - Software Freedom, Privacy and and Security for
Web 2.0 and Cloud computing at ISOC-NY Public Meeting 2010&lt;/a&gt;
(Youtube)&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=vNaIji_3xBE&quot;&gt;Fosdem 2011
Keynote by Eben Moglen presenting the Freedombox&lt;/a&gt; (Youtube)&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=9bDDUyJSQ9s&quot;&gt;Presentation of
the Freedombox by James Vasile at Elevate in Gratz 2011&lt;/a&gt; (Youtube)&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=zQTmnk27g9s&quot;&gt; Freedombox -
Discovery, Identity, and Trust by Nick Daly at Freedombox Hackfest New
York City in 2012&lt;/a&gt; (Youtube)&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=tkbSB4Ba7Ck&quot;&gt;Introduction
to the Freedombox at Freedombox Hackfest New York City in 2012&lt;/a&gt;
(Youtube)&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=z-P2Jaeg0aQ&quot;&gt;Freedom, Out
of the Box! by Bdale Garbee at linux.conf.au Ballarat, 2012&lt;/a&gt; (Youtube) &lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;https://archive.fosdem.org/2013/schedule/event/freedombox/&quot;&gt;Freedombox
1.0 by Eben Moglen and Bdale Garbee at Fosdem 2013&lt;/a&gt; (FOSDEM) &lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=e1LpYX2zVYg&quot;&gt;What is the
FreedomBox today by Bdale Garbee at Debconf13 in Vaumarcus
2013&lt;/a&gt; (Youtube)&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;A larger list is available from
&lt;a href=&quot;https://wiki.debian.org/FreedomBox/TalksAndPresentations&quot;&gt;the
Freedombox Wiki&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;On other news, I am happy to report that Freedombox based on Debian
Jessie is coming along quite well, and soon both Owncloud and using
Tor should be available for testers of the Freedombox solution. :) In
a few weeks I hope everything needed to test it is included in Debian.
The withsqlite package is already in Debian, and the plinth package is
pending in NEW.  The third and vital part of that puzzle is the
metapackage/setup framework, which is still pending an upload.  Join
us on &lt;a href=&quot;irc://irc.debian.org:6667/%23freedombox&quot;&gt;IRC
(#freedombox on irc.debian.org)&lt;/a&gt; and
&lt;a href=&quot;http://lists.alioth.debian.org/mailman/listinfo/freedombox-discuss&quot;&gt;the
mailing list&lt;/a&gt; if you want to help make this vision come true.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Third and probably last beta release of Debian Edu Wheezy</title>
                <link>http://people.skolelinux.org/pere/blog/Third_and_probably_last_beta_release_of_Debian_Edu_Wheezy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Third_and_probably_last_beta_release_of_Debian_Edu_Wheezy.html</guid>
                <pubDate>Mon, 16 Sep 2013 21:30:00 +0200</pubDate>
                <description>&lt;p&gt;The third wheezy based beta release of Debian Edu was wrapped up
today.  This is the release announcement from Holger Levsen:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;it is my pleasure to announce the third beta release (beta 2 for
short) of &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt; based on Debian Wheezy!&lt;/p&gt;

&lt;p&gt;Please test these images extensivly, if no new problems are found
we plan to do this final Debian Edu Wheezy release this coming
weekend.  We are not aware of any major problems or blockers in beta2,
if you find something, please notify us immediately!&lt;/p&gt;

&lt;p&gt;(More about the remaining steps for the Edu Wheezy release in
another mail to the edu list tonight or tomorrow...)&lt;/p&gt;

&lt;p&gt;Noteworthy changes and software updates for Debian Edu 7.1+edu0~b2
compared to beta1:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;The KDE proxy setup has been adjusted to use the provided wpad.dat. This
also gets Chromium to use this proxy.&lt;/li&gt;
&lt;li&gt;Install kdepim-groupware with KDE desktops to make sure korganizer
understand ical/dav sources.&lt;/li&gt;
&lt;li&gt;Increased default maximum size of /var/spool/squid and /skole/backup on the
main server.&lt;/li&gt;
&lt;li&gt;A source DVD image containing all source packages is now available as well.&lt;/li&gt;
&lt;li&gt;Updates for chromium (29.0.1547.57-1~deb7u1), imagemagick
(6.7.7.10-5+deb7u2), php5 (5.4.4-14+deb7u4), libmodplug
(0.8.8.4-3+deb7u1+git20130828), tiff (4.0.2-6+deb7u2), linux-image
(3.2.0-4-486_3.2.46-1+deb7u1).&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;Where to get it:&lt;/p&gt;

&lt;p&gt;To download the multiarch netinstall CD release you can use&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-CD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-CD.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-CD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-CD.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-CD.iso .&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;The SHA1SUM of this image is:  3a1c89f4666df80eebcd46c5bf5fedb866f9472f&lt;/p&gt;

&lt;p&gt;To download the multiarch USB stick ISO release you can use
&lt;ul&gt;
&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-USB.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-USB.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-USB.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-USB.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~b2-USB.iso .&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;The SHA1SUM of this image is: 702d1718548f401c74bfa6df9f032cc3ee16597e&lt;/p&gt;

&lt;p&gt;The Source DVD image has the filename
debian-edu-7.1+edu0~b2-source-DVD.iso and the SHA1SUM
089eed8b3f962db47aae1f6a9685e9bb2fa30ca5 and is available the same way
as the other isos.&lt;/p&gt;

&lt;p&gt;How to report bugs&lt;/p&gt;

&lt;p&gt;For information how to report bugs please see
&lt;br&gt;&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&quot;&gt;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&lt;/a&gt;&lt;/p&gt;


&lt;p&gt;About Debian Edu and Skolelinux&lt;/p&gt;

&lt;p&gt;Debian Edu, also known as Skolelinux, is a Linux distribution based
on Debian providing an out-of-the box environment of a completely
configured school network. Immediately after installation a school
server running all services needed for a school network is set up just
waiting for users and machines being added via GOsa², a comfortable
Web-UI. A netbooting environment is prepared using PXE, so after
initial installation of the main server from CD or USB stick all other
machines can be installed via the network. The provided school server
provides LDAP database and Kerberos authentication service,
centralized home directories, DHCP server, web proxy and many other
services.  The desktop contains more than 60 educational software
packages and more are available from the Debian archive, and schools
can choose between KDE, Gnome, LXDE and Xfce desktop environment.&lt;/p&gt;

&lt;p&gt;This is the seventh test release based on Debian Wheezy. Basically
this is an updated and slightly improved version compared to the
Squeeze release.&lt;/p&gt;

&lt;p&gt;Notes for upgrades from Alpha Prereleases&lt;/p&gt;

&lt;p&gt;Alpha based installations should reinstall or downgrade the
versions of gosa and libpam-mklocaluser to the ones used in this beta
release. Both alpha and beta0 based installations should reinstall or
deal with gosa.conf manually; there are two options: (1) Keep
gosa.conf and edit this file as outlined on the mailing list. (2)
Accept the new version of gosa.conf and replace both contained admin
password placeholders with the password hashes found in the old one
(backup copy!). In both cases all users need to change their password
to make sure a password is set for CIFS access to their home
directory.&lt;/p&gt;


&lt;p&gt;cheers,
&lt;br&gt;        Holger&lt;/p&gt;
&lt;/blockquote&gt;
</description>
        </item>
        
        <item>
                <title>Recipe to test the Freedombox project on amd64 or Raspberry Pi</title>
                <link>http://people.skolelinux.org/pere/blog/Recipe_to_test_the_Freedombox_project_on_amd64_or_Raspberry_Pi.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Recipe_to_test_the_Freedombox_project_on_amd64_or_Raspberry_Pi.html</guid>
                <pubDate>Tue, 10 Sep 2013 14:20:00 +0200</pubDate>
                <description>&lt;p&gt;I was introduced to the
&lt;a href=&quot;http://www.freedomboxfoundation.org/&quot;&gt;Freedombox project&lt;/a&gt;
in 2010, when Eben Moglen presented his vision about serving the need
of non-technical people to keep their personal information private and
within the legal protection of their own homes.  The idea is to give
people back the power over their network and machines, and return
Internet back to its intended peer-to-peer architecture.  Instead of
depending on a central service, the Freedombox will give everyone
control over their own basic infrastructure.&lt;/p&gt;

&lt;p&gt;I&#39;ve intended to join the effort since then, but other tasks have
taken priority.  But this summers nasty news about the misuse of trust
and privilege exercised by the &quot;western&quot; intelligence gathering
communities increased my eagerness to contribute to a point where I
actually started working on the project a while back.&lt;/p&gt;

&lt;p&gt;The &lt;a href=&quot;https://alioth.debian.org/projects/freedombox/&quot;&gt;initial
Debian initiative&lt;/a&gt; based on the vision from Eben Moglen, is to
create a simple and cheap Debian based appliance that anyone can hook
up in their home and get access to secure and private services and
communication.  The initial deployment platform have been the
&lt;a href=&quot;http://www.globalscaletechnologies.com/t-dreamplugdetails.aspx&quot;&gt;Dreamplug&lt;/a&gt;,
which is a piece of hardware I do not own.  So to be able to test what
the current Freedombox setup look like, I had to come up with a way to install
it on some hardware I do have access to.  I have rewritten the
&lt;a href=&quot;https://github.com/NickDaly/freedom-maker&quot;&gt;freedom-maker&lt;/a&gt;
image build framework to use .deb packages instead of only copying
setup into the boot images, and thanks to this rewrite I am able to
set up any machine supported by Debian Wheezy as a Freedombox, using
the previously mentioned deb (and a few support debs for packages
missing in Debian).&lt;/p&gt;

&lt;p&gt;The current Freedombox setup consist of a set of bootstrapping
scripts
(&lt;a href=&quot;https://github.com/petterreinholdtsen/freedombox-setup&quot;&gt;freedombox-setup&lt;/a&gt;),
and a administrative web interface
(&lt;a href=&quot;https://github.com/NickDaly/Plinth&quot;&gt;plinth&lt;/a&gt; + exmachina +
withsqlite), as well as a privacy enhancing proxy based on
&lt;a href=&quot;http://packages.qa.debian.org/privoxy&quot;&gt;privoxy&lt;/a&gt;
(freedombox-privoxy).  There is also a web/javascript based XMPP
client (&lt;a href=&quot;http://packages.qa.debian.org/jwchat&quot;&gt;jwchat&lt;/a&gt;)
trying (unsuccessfully so far) to talk to the XMPP server
(&lt;a href=&quot;http://packages.qa.debian.org/ejabberd&quot;&gt;ejabberd&lt;/a&gt;).  The
web interface is pluggable, and the goal is to use it to enable OpenID
services, mesh network connectivity, use of TOR, etc, etc.  Not much of
this is really working yet, see
&lt;a href=&quot;https://github.com/NickDaly/freedombox-todos/blob/master/TODO&quot;&gt;the
project TODO&lt;/a&gt; for links to GIT repositories.  Most of the code is
on github at the moment.  The HTTP proxy is operational out of the
box, and the admin web interface can be used to add/remove plinth
users.  I&#39;ve not been able to do anything else with it so far, but
know there are several branches spread around github and other places
with lots of half baked features.&lt;/p&gt;

&lt;p&gt;Anyway, if you want to have a look at the current state, the
following recipes should work to give you a test machine to poke
at.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Debian Wheezy amd64&lt;/strong&gt;&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;Fetch normal Debian Wheezy installation ISO.&lt;/li&gt;
&lt;li&gt;Boot from it, either as CD or USB stick.&lt;/li&gt;
&lt;li&gt;&lt;p&gt;Press [tab] on the boot prompt and add this as a boot argument
to the Debian installer:&lt;p&gt;
&lt;pre&gt;url=&lt;a href=&quot;http://www.reinholdtsen.name/freedombox/preseed-wheezy.dat&quot;&gt;http://www.reinholdtsen.name/freedombox/preseed-wheezy.dat&lt;/a&gt;&lt;/pre&gt;&lt;/li&gt;

&lt;li&gt;Answer the few language/region/password questions and pick disk to
install on.&lt;/li&gt;

&lt;li&gt;When the installation is finished and the machine have rebooted a
few times, your Freedombox is ready for testing.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;&lt;strong&gt;Raspberry Pi Raspbian&lt;/strong&gt;&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;Fetch a Raspbian SD card image, create SD card.&lt;/li&gt;
&lt;li&gt;Boot from SD card, extend file system to fill the card completely.&lt;/li&gt;
&lt;li&gt;&lt;p&gt;Log in and add this to /etc/sources.list:&lt;/p&gt;
&lt;pre&gt;
deb &lt;a href=&quot;http://www.reinholdtsen.name/freedombox/&quot;&gt;http://www.reinholdtsen.name/freedombox&lt;/a&gt; wheezy main
&lt;/pre&gt;&lt;/li&gt;
&lt;li&gt;&lt;p&gt;Run this as root:&lt;/p&gt;
&lt;pre&gt;
wget -O - http://www.reinholdtsen.name/freedombox/BE1A583D.asc | \
   apt-key add -
apt-get update
apt-get install freedombox-setup
/usr/lib/freedombox/setup
&lt;/pre&gt;&lt;/li&gt;
&lt;li&gt;Reboot into your freshly created Freedombox.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;You can test it on other architectures too, but because the
freedombox-privoxy package is binary, it will only work as intended on
the architectures where I have had time to build the binary and put it
in my APT repository.  But do not let this stop you.  It is only a
short &quot;&lt;tt&gt;apt-get source -b freedombox-privoxy&lt;/tt&gt;&quot; away. :)&lt;/p&gt;

&lt;p&gt;Note that by default Freedombox is a DHCP server on the
192.168.1.0/24 subnet, so if this is your subnet be careful and turn
off the DHCP server by running &quot;&lt;tt&gt;update-rc.d isc-dhcp-server
disable&lt;/tt&gt;&quot; as root.&lt;/p&gt;

&lt;p&gt;Please let me know if this works for you, or if you have any
problems.  We gather on the IRC channel
&lt;a href=&quot;irc://irc.debian.org:6667/%23freedombox&quot;&gt;#freedombox&lt;/a&gt; on
irc.debian.org and the
&lt;a href=&quot;http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/freedombox-discuss&quot;&gt;project
mailing list&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Once you get your freedombox operational, you can visit
&lt;tt&gt;http://your-host-name:8001/&lt;/tt&gt; to see the state of the plint
welcome screen (dead end - do not be surprised if you are unable to
get past it), and next visit &lt;tt&gt;http://your-host-name:8001/help/&lt;/tt&gt;
to look at the rest of plinth.  The default user is &#39;admin&#39; and the
default password is &#39;secret&#39;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Second beta release (beta 1) of Debian Edu/Skolelinux based on Debian Wheezy</title>
                <link>http://people.skolelinux.org/pere/blog/Second_beta_release__beta_1__of_Debian_Edu_Skolelinux_based_on_Debian_Wheezy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Second_beta_release__beta_1__of_Debian_Edu_Skolelinux_based_on_Debian_Wheezy.html</guid>
                <pubDate>Thu, 22 Aug 2013 09:30:00 +0200</pubDate>
                <description>&lt;p&gt;The second wheezy based beta release of Debian Edu was wrapped up
today, slightly delayed because of some bugs in the initial Windows
integration fixes .  This is the release announcement:&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;New features for Debian Edu 7.1+edu0~b1 released 2013-08-22&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;These are the release notes for Debian Edu / Skolelinux
7.1+edu0~b1, based on Debian with codename &quot;Wheezy&quot;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;About Debian Edu and Skolelinux&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu, also known as
Skolelinux&lt;/a&gt;, is a Linux distribution based on Debian providing an
out-of-the box environment of a completely configured school
network. Immediately after installation a school server running all
services needed for a school network is set up just waiting for users
and machines being added via GOsa², a comfortable Web-UI. A netbooting
environment is prepared using PXE, so after initial installation of
the main server from CD or USB stick all other machines can be
installed via the network. The provided school server provides LDAP
database and Kerberos authentication service, centralized home
directories, DHCP server, web proxy and many other services. The
desktop contains
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html&quot;&gt;more
than 60 educational software packages&lt;/a&gt; and more are available from
the Debian archive, and schools can choose between KDE, Gnome, LXDE
and Xfce desktop environment.&lt;/p&gt;

&lt;p&gt;This is the sixth test release based on Debian Wheezy. Basically this
is an updated and slightly improved version compared to the Squeeze
release.&lt;/p&gt;

&lt;p&gt;ALERT: Alpha based installations should reinstall or downgrade the
versions of gosa and libpam-mklocaluser to the ones used in this beta
release. Both alpha and beta0 based installations should reinstall or
deal with gosa.conf manually; there are two options: (1) Keep
gosa.conf and edit this file as outlined
&lt;a href=&quot;http://lists.debian.org/debian-edu/2013/08/msg00127.html&quot;&gt;on
the mailing list&lt;/a&gt;. (2) Accept the new version of gosa.conf and
replace both contained admin password placeholders with the password
hashes found in the old one (backup copy!). In both cases every user
need to change their their password to make sure a password is set for
CIFS access to their home directory.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Software updates&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Added ssh askpass packages to default installation, to ensure ssh
    work also without a attached tty.&lt;/li&gt;
&lt;li&gt;Add the command-not-found package to the default installation to
    make it easier to figure out where to find missing command line
    tools. Please note, that the command &#39;update-command-not-found&#39;
    has to be run as root to actually make it useful (internet access
    required).&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Other changes&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Adjusted the USB stick ISO image build to include every tool
needed for desktop=xfce installations.&lt;/li&gt;
&lt;li&gt;Adjust thin-client-server task to work when installing from USB
stick ISO image.&lt;/li&gt;
&lt;li&gt;Made new grub artwork (changed png from indexed to RGB format).&lt;/li&gt;
&lt;li&gt;Minor cleanup in the CUPS setup.&lt;/li&gt;
&lt;li&gt;Make sure that bootstrapping of the Samba domain really happens
    during installation of the main server and adjust SID handling to
    cope with this.&lt;/li&gt;
&lt;li&gt;Make Samba passwords changeable (again) via GOsa².&lt;/li&gt;
&lt;li&gt;Fix generation of LM and NT password hashes via GOsa² to avoid
    empty password hashes.&lt;/li&gt;
&lt;li&gt;Adapted Samba machine domain joining to latest change in the
    smbldap-tools Perl package, fixing bugs blocking Windows machines
    from joining the Samba domain.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Known issues&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;KDE fails to understand the wpad.dat file provided, causing it to
    not use the http proxy as it should.&lt;/li&gt;
&lt;li&gt;Chromium also fails to use the proxy when using the KDE desktop
    (using the KDE configuration).&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Where to get it&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;To download the multiarch netinstall CD release you can use&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-CD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-CD.iso&lt;/a&gt;&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-CD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-CD.iso&lt;/a&gt;&lt;/li&gt;

&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-CD.iso .&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;The MD5SUM of this image is: 1e357f80b55e703523f2254adde6d78b
&lt;br&gt;The SHA1SUM of this image is: 7157f9be5fd27c7694d713c6ecfed61c3edda3b2&lt;/p&gt;

&lt;p&gt;To download the multiarch USB stick ISO release you can use&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-USB.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-USB.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-USB.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-USB.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~b1-USB.iso .&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;The MD5SUM of this image is: 7a8408ead59cf7e3cef25afb6e91590b
&lt;br&gt;The SHA1SUM of this image is: f1817c031f02790d5edb3bfa0dcf8451088ad119&lt;/p&gt;


&lt;p&gt;&lt;strong&gt;How to report bugs&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&quot;&gt;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&lt;/a&gt;
</description>
        </item>
        
        <item>
                <title>Intel 180 SSD disk with Lenovo firmware can not use Intel firmware</title>
                <link>http://people.skolelinux.org/pere/blog/Intel_180_SSD_disk_with_Lenovo_firmware_can_not_use_Intel_firmware.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Intel_180_SSD_disk_with_Lenovo_firmware_can_not_use_Intel_firmware.html</guid>
                <pubDate>Sun, 18 Aug 2013 14:00:00 +0200</pubDate>
                <description>&lt;p&gt;Earlier, I reported about
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/How_to_fix_a_Thinkpad_X230_with_a_broken_180_GB_SSD_disk.html&quot;&gt;my
problems using an Intel SSD 520 Series 180 GB disk&lt;/a&gt;.  Friday I was
told by IBM that the original disk should be thrown away.  And as
there no longer was a problem if I bricked the firmware, I decided
today to try to install Intel firmware to replace the Lenovo firmware
currently on the disk.&lt;/p&gt;

&lt;p&gt;I searched the Intel site for firmware, and found
&lt;a href=&quot;https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&amp;ProdId=3472&amp;DwnldID=18363&amp;ProductFamily=Solid-State+Drives+and+Caching&amp;ProductLine=Intel%c2%ae+High+Performance+Solid-State+Drive&amp;ProductProduct=Intel%c2%ae+SSD+520+Series+(180GB%2c+2.5in+SATA+6Gb%2fs%2c+25nm%2c+MLC)&amp;lang=eng&quot;&gt;issdfut_2.0.4.iso&lt;/a&gt;
(aka Intel SATA Solid-State Drive Firmware Update Tool) which
according to the site should contain the latest firmware for SSD
disks.  I inserted the broken disk in one of my spare laptops and
booted the ISO from a USB stick.  The disk was recognized, but the
program claimed the newest firmware already were installed and refused
to insert any Intel firmware.  So no change, and the disk is still
unable to handle write load. :( I guess the only way to get them
working would be if Lenovo releases new firmware.  No idea how likely
that is.  Anyway, just blogging about this test for completeness.  I
got a working Samsung disk, and see no point in spending more time on
the broken disks.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>90 percent done with the Norwegian draft translation of Free Culture</title>
                <link>http://people.skolelinux.org/pere/blog/90_percent_done_with_the_Norwegian_draft_translation_of_Free_Culture.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/90_percent_done_with_the_Norwegian_draft_translation_of_Free_Culture.html</guid>
                <pubDate>Fri, 2 Aug 2013 10:40:00 +0200</pubDate>
                <description>&lt;p&gt;It has been a while since my last update.  Since last summer, I
have worked on a Norwegian
&lt;a href=&quot;http://www.docbook.org/&quot;&gt;docbook&lt;/a&gt; version of the 2004 book
&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt; by Lawrence Lessig,
to get a Norwegian text explaining the problems with the copyright
law.  Yesterday, I finally broken the 90% mark, when counting the
number of strings to translate.  Due to real life constraints, I have
not had time to work on it since March, but when the summer broke out,
I found time to work on it again.  Still lots of work left, but the
first draft is nearing completion.  I created a graph to show the
progress of the translation:&lt;/p&gt;

&lt;p&gt;&lt;img width=&quot;80%&quot; align=&quot;center&quot; src=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/raw/master/progress.png&quot;&gt;&lt;/p&gt;

&lt;p&gt;When the first draft is done, the translated text need to be
proof read, and the remaining formatting problems with images and SVG
drawings need to be fixed.  There are probably also some index entries
missing that need to be added.  This can be done by comparing the
index entries listed in the SiSU version of the book, or comparing the
English docbook version with the paper version.  Last, the colophon
page with ISBN numbers etc need to be wrapped up before the release is
done.  I should also figure out how to get correct Norwegian sorting
of the index pages.  All docbook tools I have tried so far (xmlto,
docbook-xsl, dblatex) get the order of symbols and the special
Norwegian letters ÆØÅ wrong.&lt;/p&gt;

&lt;p&gt;There is still need for translators and people with docbook
knowledge, to be able to get a good looking book (I still struggle
with dblatex, xmlto and docbook-xsl) as well as to do the draft
translation and proof reading.  And I would like the figures to be
redrawn as SVGs to make it easy to translate them.  Any SVG master
around?  There are also some legal terms that are unfamiliar to me.
If you want to help, please get in touch with me, and check out the
project files currently available from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;If you are curious what the translated book currently look like,
the updated
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.pdf?raw=true&quot;&gt;PDF&lt;/a&gt;
and
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.epub?raw=true&quot;&gt;EPUB&lt;/a&gt;
are published on github.  The HTML version is published as well, but
github hand it out with MIME type text/plain, confusing browsers, so I
saw no point in linking to that version.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First beta release of Debian Edu/Skolelinux based on Debian Wheezy</title>
                <link>http://people.skolelinux.org/pere/blog/First_beta_release_of_Debian_Edu_Skolelinux_based_on_Debian_Wheezy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_beta_release_of_Debian_Edu_Skolelinux_based_on_Debian_Wheezy.html</guid>
                <pubDate>Sat, 27 Jul 2013 20:30:00 +0200</pubDate>
                <description>&lt;p&gt;The first wheezy based beta release of Debian Edu was wrapped up
today.  This is the release announcement:&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;New features for Debian Edu 7.1+edu0~b0 released
2013-07-27&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;These are the release notes for for Debian Edu / Skolelinux
7.1+edu0~b0, based on Debian with codename &quot;Wheezy&quot;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;About Debian Edu and Skolelinux&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu, also known as
Skolelinux&lt;/a&gt;, is a Linux distribution based on Debian providing an
out-of-the box environment of a completely configured school
network. Immediately after installation a school server running all
services needed for a school network is set up just waiting for users
and machines being added via GOsa², a comfortable Web-UI. A netbooting
environment is prepared using PXE, so after initial installation of
the main server from CD, DVD or USB stick all other machines can be
installed via the network. The provided school server provides LDAP
database and Kerberos authentication service, centralized home
directories, DHCP server, web proxy and many other services. The
desktop contains
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html&quot;&gt;more
than 60 educational software packages&lt;/a&gt; and more are available from
the Debian archive, and schools can choose between KDE, Gnome, LXDE
and Xfce desktop environment.&lt;/p&gt;

&lt;p&gt;This is the fifth test release based on Debian Wheezy. Basically
this is an updated and slightly improved version compared to the
Squeeze release.&lt;/p&gt;

&lt;p&gt;ALERT: Alpha based installations should reinstall or downgrade the
versions of gosa and libpam-mklocaluser to the ones used in this beta
release.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Software updates&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Switched roaming workstation profiles from wicd to network-manager
   for network configuration, as wicd didn&#39;t work any more.&lt;/li&gt;
&lt;li&gt;Changed version numbers of patched gosa and libpam-mklocaluser
   packages to make sure our locally patched versions will be replaced
   by the official packages when they are released from Debian. Those
   installing alpha version need to reinstall or manually downgrade gosa
   and libpam-mklocaluser.&lt;/li&gt;
&lt;li&gt;Added bluetooth tools to the default desktop (bluedevil, blueman).&lt;/li&gt;
&lt;li&gt;Added tools for sharing the desktop on KDE (krdc, krfb).&lt;/li&gt;
&lt;li&gt;Added valgrind to the default installation for easier debugging of
   crash bugs.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Other changes&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Fixed artwork package to work with gnome, no longer break
   desktop=gnome installations.&lt;/li&gt;
&lt;li&gt;Adjusted installer to now work when forced to use a proxy with the
   netinst CD.&lt;/li&gt;
&lt;li&gt;Fixed code detecting and setting/loading hardware specific
   setup/firmware to work more robust out of the box.&lt;/li&gt;
&lt;li&gt;Adjusted Kerberos setup to detect realm and server settings at
   install time instead of dynamically at run time. This avoid a crash
   with krb5-auth-dialog on diskless workstations without a DNS name.&lt;/li&gt;
&lt;li&gt;Worked around misfeature in network-manager not calling the dhclient
   exit hooks, causing automatic proxy configuration and automatic host
   name setting at run time to work again.&lt;/li&gt;
&lt;li&gt;Fixed feature setting the default Iceweasel start page from URL
   fetched from LDAP, to allow schools to set the global default by
   updating the dc=skole,dc=skolelinux,dc=no LDAP object.&lt;/li&gt;
&lt;li&gt;Changed default host name on all networked machines to be unique
   (generated from MAC or reverse DNS) after boot.&lt;/li&gt;
&lt;li&gt;Adjusted partition sizes to make sure they are big enough.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Known issues&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Grub is missing the new artwork.&lt;/li&gt;
&lt;li&gt;KDE fail to understand the wpad.dat file provided, causing it to
    not use the http proxy as it should.&lt;/li&gt;
&lt;li&gt;Chromium also fail to use the proxy.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Where to get it&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;To download the multiarch netinstall CD release you can use&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-CD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-CD.iso&lt;/a&gt;&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-CD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-CD.iso&lt;/a&gt;&lt;/li&gt;

&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-CD.iso .&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;The MD5SUM of this image is: 55d5de9765b6dccd5d9ec33cf1a07109
&lt;br&gt;The SHA1SUM of this image is: 996a1d9517740e4d627d100de2d12b23dd545a3f&lt;/p&gt;

&lt;p&gt;To download the multiarch USB stick ISO release you can use&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-USB.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-USB.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-USB.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-USB.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~b0-USB.iso .&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;The MD5SUM of this image is: d8f0818c51a78d357de794066f289f69
&lt;br&gt;The SHA1SUM of this image is: 49185ca354e8d0543240423746924f76a6cee733&lt;/p&gt;


&lt;p&gt;&lt;strong&gt;How to report bugs&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&quot;&gt;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&lt;/a&gt;
</description>
        </item>
        
        <item>
                <title>How to fix a Thinkpad X230 with a broken 180 GB SSD disk</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_fix_a_Thinkpad_X230_with_a_broken_180_GB_SSD_disk.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_fix_a_Thinkpad_X230_with_a_broken_180_GB_SSD_disk.html</guid>
                <pubDate>Wed, 17 Jul 2013 23:50:00 +0200</pubDate>
                <description>&lt;p&gt;Today I switched to
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/The_Thinkpad_is_dead__long_live_the_Thinkpad_X230_.html&quot;&gt;my
new laptop&lt;/a&gt;.  I&#39;ve previously written about the problems I had with
my new Thinkpad X230, which was delivered with an
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Intel_SSD_520_Series_180_GB_with_Lenovo_firmware_still_lock_up_from_sustained_writes.html&quot;&gt;180
GB Intel SSD disk with Lenovo firmware&lt;/a&gt; that did not handle
sustained writes.  My hardware supplier have been very forthcoming in
trying to find a solution, and after first trying with another
identical 180 GB disks they decided to send me a 256 GB Samsung SSD
disk instead to fix it once and for all.  The Samsung disk survived
the installation of Debian with encrypted disks (filling the disk with
random data during installation killed the first two), and I thus
decided to trust it with my data.  I have installed it as a Debian Edu
Wheezy roaming workstation hooked up with my Debian Edu Squeeze main
server at home using Kerberos and LDAP, and will use it as my work
station from now on.&lt;/p&gt;

&lt;p&gt;As this is a solid state disk with no moving parts, I believe the
Debian Wheezy default installation need to be tuned a bit to increase
performance and increase life time of the disk.  The Linux kernel and
user space applications do not yet adjust automatically to such
environment.  To make it easier for my self, I created a draft Debian
package &lt;tt&gt;ssd-setup&lt;/tt&gt; to handle this tuning.  The
&lt;a href=&quot;http://anonscm.debian.org/gitweb/?p=collab-maint/ssd-setup.git&quot;&gt;source
for the ssd-setup package&lt;/a&gt; is available from collab-maint, and it
is set up to adjust the setup of the machine by just installing the
package.  If there is any non-SSD disk in the machine, the package
will refuse to install, as I did not try to write any logic to sort
file systems in SSD and non-SSD file systems.&lt;/p&gt;

&lt;p&gt;I consider the package a draft, as I am a bit unsure how to best
set up Debian Wheezy with an SSD.  It is adjusted to my use case,
where I set up the machine with one large encrypted partition (in
addition to /boot), put LVM on top of this and set up partitions on
top of this again.  See the README file in the package source for the
references I used to pick the settings.  At the moment these
parameters are tuned:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Set up cryptsetup to pass TRIM commands to the physical disk
    (adding discard to /etc/crypttab)&lt;/li&gt;

&lt;li&gt;Set up LVM to pass on TRIM commands to the underlying device (in
    this case a cryptsetup partition) by changing issue_discards from
    0 to 1 in /etc/lvm/lvm.conf.&lt;/li&gt;

&lt;li&gt;Set relatime as a file system option for ext3 and ext4 file
    systems.&lt;/li&gt;

&lt;li&gt;Tell swap to use TRIM commands by adding &#39;discard&#39; to
    /etc/fstab.&lt;/li&gt;

&lt;li&gt;Change I/O scheduler from cfq to deadline using a udev rule.&lt;/li&gt;

&lt;li&gt;Run fstrim on every ext3 and ext4 file system every night (from
    cron.daily).&lt;/li&gt;

&lt;li&gt;Adjust sysctl values vm.swappiness to 1 and vm.vfs_cache_pressure
    to 50 to reduce the kernel eagerness to swap out processes.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;During installation, I cancelled the part where the installer fill
the disk with random data, as this would kill the SSD performance for
little gain.  My goal with the encrypted file system is to ensure
those stealing my laptop end up with a brick and not a working
computer.  I have no hope in keeping the really resourceful people
from getting the data on the disk (see
&lt;a href=&quot;http://xkcd.com/538/&quot;&gt;XKCD #538&lt;/a&gt; for an explanation why).
Thus I concluded that adding the discard option to crypttab is the
right thing to do.&lt;/p&gt;

&lt;p&gt;I considered using the noop I/O scheduler, as several recommended
it for SSD, but others recommended deadline and a benchmark I found
indicated that deadline might be better for interactive use.&lt;/p&gt;

&lt;p&gt;I also considered using the &#39;discard&#39; file system option for ext3
and ext4, but read that it would give a performance hit ever time a
file is removed, and thought it best to that that slowdown once a day
instead of during my work.&lt;/p&gt;

&lt;p&gt;My package do not set up tmpfs on /var/run, /var/lock and /tmp, as
this is already done by Debian Edu.&lt;/p&gt;

&lt;p&gt;I have not yet started on the user space tuning.  I expect
iceweasel need some tuning, and perhaps other applications too, but
have not yet had time to investigate those parts.&lt;/p&gt;

&lt;p&gt;The package should work on Ubuntu too, but I have not yet tested it
there.&lt;/p&gt;

&lt;p&gt;As for the answer to the question in the title of this blog post,
as far as I know, the only solution I know about is to replace the
disk.  It might be possible to flash it with Intel firmware instead of
the Lenovo firmware.  But I have not tried and did not want to do so
without approval from Lenovo as I wanted to keep the warranty on the
disk until a solution was found and they wanted the broken disks
back.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Intel SSD 520 Series 180 GB with Lenovo firmware still lock up from sustained writes</title>
                <link>http://people.skolelinux.org/pere/blog/Intel_SSD_520_Series_180_GB_with_Lenovo_firmware_still_lock_up_from_sustained_writes.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Intel_SSD_520_Series_180_GB_with_Lenovo_firmware_still_lock_up_from_sustained_writes.html</guid>
                <pubDate>Wed, 10 Jul 2013 13:30:00 +0200</pubDate>
                <description>&lt;p&gt;A few days ago, I wrote about
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/The_Thinkpad_is_dead__long_live_the_Thinkpad_X230_.html&quot;&gt;the
problems I experienced with my new X230 and its SSD disk&lt;/a&gt;, which
was dying during installation because it is unable to cope with
sustained write.  My supplier is in contact with
&lt;a href=&quot;http://www.lenovo.com/&quot;&gt;Lenovo&lt;/a&gt;, and they wanted to send a
replacement disk to try to fix the problem.  They decided to send an
identical model, so my hopes for a permanent fix was slim.&lt;/p&gt;

&lt;p&gt;Anyway, today I got the replacement disk and tried to install
Debian Edu Wheezy with encrypted disk on it.  The new disk have the
same firmware version as the original.  This time my hope raised
slightly as the installation progressed, as the original disk used to
die after 4-7% of the disk was written to, while this time it kept
going past 10%, 20%, 40% and even past 50%.  But around 60%, the disk
died again and I was back on square one.  I still do not have a new
laptop with a disk I can trust.  I can not live with a disk that might
lock up when I download a new
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt; ISO or
other large files.  I look forward to hearing from my supplier with
the next proposal from Lenovo.&lt;/p&gt;

&lt;p&gt;The original disk is marked Intel SSD 520 Series 180 GB,
11S0C38722Z1ZNME35X1TR, ISN: CVCV321407HB180EGN, SA: G57560302, FW:
LF1i, 29MAY2013, PBA: G39779-300, LBA 351,651,888, LI P/N: 0C38722,
Pb-free 2LI, LC P/N: 16-200366, WWN: 55CD2E40002756C4, Model:
SSDSC2BW180A3L 2.5&quot; 6Gb/s SATA SSD 180G 5V 1A, ASM P/N 0C38732, FRU
P/N 45N8295, P0C38732.&lt;/p&gt;

&lt;p&gt;The replacement disk is marked Intel SSD 520 Series 180 GB,
11S0C38722Z1ZNDE34N0L0, ISN: CVCV315306RK180EGN, SA: G57560-302, FW:
LF1i, 22APR2013, PBA: G39779-300, LBA 351,651,888, LI P/N: 0C38722,
Pb-free 2LI, LC P/N: 16-200366, WWN: 55CD2E40000AB69E, Model:
SSDSC2BW180A3L 2.5&quot; 6Gb/s SATA SSD 180G 5V 1A, ASM P/N 0C38732, FRU
P/N 45N8295, P0C38732.&lt;/p&gt;

&lt;p&gt;The only difference is in the first number (serial number?), ISN,
SA, date and WNPP values.  Mentioning all the details here in case
someone is able to use the information to find a way to identify the
failing disk among working ones (if any such working disk actually
exist).&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>July 13th: Debian/Ubuntu BSP and Skolelinux/Debian Edu developer gathering in Oslo</title>
                <link>http://people.skolelinux.org/pere/blog/July_13th__Debian_Ubuntu_BSP_and_Skolelinux_Debian_Edu_developer_gathering_in_Oslo.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/July_13th__Debian_Ubuntu_BSP_and_Skolelinux_Debian_Edu_developer_gathering_in_Oslo.html</guid>
                <pubDate>Tue, 9 Jul 2013 10:40:00 +0200</pubDate>
                <description>&lt;p&gt;The upcoming Saturday, 2013-07-13, we are organising a combined
Debian Edu developer gathering and Debian and Ubuntu bug squashing
party in Oslo.  It is organised by &lt;a href=&quot;http://www.nuug.no/&quot;&gt;the
member assosiation NUUG&lt;/a&gt; and
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;the Debian Edu / Skolelinux
project&lt;/a&gt; together with &lt;a href=&quot;http://bitraf.no/&quot;&gt;the hack space
Bitraf&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;It starts 10:00 and continue until late evening.  Everyone is
welcome, and there is no fee to participate.  There is on the other
hand limited space, and only room for 30 people.  Please put your name
on &lt;a href=&quot;http://wiki.debian.org/BSP/2013/07/13/no/Oslo&quot;&gt;the event
wiki page&lt;/a&gt; if you plan to join us.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The Thinkpad is dead, long live the Thinkpad X230?</title>
                <link>http://people.skolelinux.org/pere/blog/The_Thinkpad_is_dead__long_live_the_Thinkpad_X230_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_Thinkpad_is_dead__long_live_the_Thinkpad_X230_.html</guid>
                <pubDate>Fri, 5 Jul 2013 08:30:00 +0200</pubDate>
                <description>&lt;p&gt;Half a year ago, I reported that I had to find a
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Thank_you_Thinkpad_X41__for_your_long_and_trustworthy_service.html&quot;&gt;replacement
for my trusty old Thinkpad X41&lt;/a&gt;.  Unfortunately I did not have much
time to spend on it, and it took a while to find a model I believe
will do the job, but two days ago the replacement finally arrived.  I
ended up picking a
&lt;a href=&quot;http://www.linlap.com/lenovo_thinkpad_x230&quot;&gt;Thinkpad X230&lt;/a&gt;
with SSD disk (NZDAJMN).  I first test installed Debian Edu Wheezy as
a roaming workstation, and it seemed to work flawlessly.  But my
second installation with encrypted disk was not as successful.  More
on that below.&lt;/p&gt;

&lt;p&gt;I had a hard time trying to track down a good laptop, as my most
important requirements (robust and with a good keyboard) are never
listed in the feature list.  But I did get good help from the search
feature at &lt;a href=&quot;http://www.prisjakt.no/&quot;&gt;Prisjakt&lt;/a&gt;, which
allowed me to limit the list of interesting laptops based on my other
requirements.  A bit surprising that SSD disk are not disks according
to that search interface, so I had to drop specifying the number of
disks from my search parameters.  I also asked around among friends to
get their impression on keyboards and robustness.&lt;/p&gt;

&lt;p&gt;So the new laptop arrived, and it is quite a lot wider than the
X41.  I am not quite convinced about the keyboard, as it is
significantly wider than my old keyboard, and I have to stretch my
hand a lot more to reach the edges.  But the key response is fairly
good and the individual key shape is fairly easy to handle, so I hope
I will get used to it.  My old X40 was starting to fail, and I really
needed a new laptop now. :)&lt;/p&gt;

&lt;p&gt;Turning off the touch pad was simple.  All it took was a quick
visit to the BIOS during boot it disable it.&lt;/p&gt;

&lt;p&gt;But there is a fatal problem with the laptop.  The 180 GB SSD disk
lock up during load.  And this happen when installing Debian Wheezy
with encrypted disk, while the disk is being filled with random data.
I also tested to install Ubuntu Raring, and it happen there too if I
reenable the code to fill the disk with random data (it is disabled by
default in Ubuntu).  And the bug with is already known.  It was
reported to Debian as &lt;a href=&quot;http://bugs.debian.org/691427&quot;&gt;BTS
report #691427 2012-10-25&lt;/a&gt; (journal commit I/O error on brand-new
Thinkpad T430s ext4 on lvm on SSD).  It is also reported to the Linux
kernel developers as
&lt;a href=&quot;https://bugzilla.kernel.org/show_bug.cgi?id=51861&quot;&gt;Kernel bugzilla
report #51861 2012-12-20&lt;/a&gt; (Intel SSD 520 stops working under load
(SSDSC2BW180A3L in Lenovo ThinkPad T430s)). It is also reported on the
Lenovo forums, both for
&lt;a href=&quot;http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T430s-Intel-SSD-520-180GB-issue/m-p/1070549&quot;&gt;T430
2012-11-10&lt;/a&gt; and for
&lt;a href=&quot;http://forums.lenovo.com/t5/X-Series-ThinkPad-Laptops/x230-SATA-errors-with-180GB-Intel-520-SSD-under-heavy-write-load/m-p/1068147&quot;&gt;X230
03-20-2013&lt;/a&gt;.  The problem do not only affect installation.  The
reports state that the disk lock up during use if many writes are done
on the disk, so it is much no use to work around the installation
problem and end up with a computer that can lock up at any moment.
There is even a
&lt;a href=&quot;https://git.efficios.com/?p=test-ssd.git&quot;&gt;small C program
available&lt;/a&gt; that will lock up the hard drive after running a few
minutes by writing to a file.&lt;/p&gt;

&lt;p&gt;I&#39;ve contacted my supplier and asked how to handle this, and after
contacting PCHELP Norway (request 01D1FDP) which handle support
requests for Lenovo, his first suggestion was to upgrade the disk
firmware.  Unfortunately there is no newer firmware available from
Lenovo, as my disk already have the most recent one (version LF1i).  I
hope to hear more from him today and hope the problem can be
fixed. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The Thinkpad is dead, long live the Thinkpad X230</title>
                <link>http://people.skolelinux.org/pere/blog/The_Thinkpad_is_dead__long_live_the_Thinkpad_X230.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_Thinkpad_is_dead__long_live_the_Thinkpad_X230.html</guid>
                <pubDate>Thu, 4 Jul 2013 09:20:00 +0200</pubDate>
                <description>&lt;p&gt;Half a year ago, I reported that I had to find a replacement for my
trusty old Thinkpad X41.  Unfortunately I did not have much time to
spend on it, but today the replacement finally arrived.  I ended up
picking a &lt;a href=&quot;http://www.linlap.com/lenovo_thinkpad_x230&quot;&gt;Thinkpad
X230&lt;/a&gt; with SSD disk (NZDAJMN).  I first test installed Debian Edu
Wheezy as a roaming workstation, and it worked flawlessly.  As I write
this, it is installing what I hope will be a more final installation,
with a encrypted hard drive to ensure any dope head stealing it end up
with an expencive door stop.&lt;/p&gt;

&lt;p&gt;I had a hard time trying to track down a good laptop, as my most
important requirements (robust and with a good keyboard) are never
listed in the feature list.  But I did get good help from the search
feature at &lt;ahref=&quot;http://www.prisjakt.no/&quot;&gt;Prisjakt&lt;/a&gt;, which
allowed me to limit the list of interesting laptops based on my other
requirements.  A bit surprising that SSD disk are not disks, so I had
to drop number of disks from my search parameters.&lt;/p&gt;

&lt;p&gt;I am not quite convinced about the keyboard, as it is significantly
wider than my old keyboard, and I have to stretch my hand a lot more
to reach the edges.  But the key response is fairly good and the
individual key shape is fairly easy to handle, so I hope I will get
used to it.  My old X40 was starting to fail, and I really needed a
new laptop now. :)&lt;/p&gt;

&lt;p&gt;I look forward to figuring out how to turn off the touch pad.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Fourth alpha release of Debian Edu/Skolelinux based on Debian Wheezy</title>
                <link>http://people.skolelinux.org/pere/blog/Fourth_alpha_release_of_Debian_Edu_Skolelinux_based_on_Debian_Wheezy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Fourth_alpha_release_of_Debian_Edu_Skolelinux_based_on_Debian_Wheezy.html</guid>
                <pubDate>Wed, 3 Jul 2013 14:00:00 +0200</pubDate>
                <description>&lt;p&gt;The fourth wheezy based alpha release of Debian Edu was wrapped up
today.  This is the release announcement:&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;New features for Debian Edu 7.1+edu0~alpha3 released
2013-07-03&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;These are the release notes for for Debian Edu / Skolelinux
7.1+edu0~alpha3, based on Debian with codename &quot;Wheezy&quot;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;About Debian Edu and Skolelinux&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu, also known as
Skolelinux&lt;/a&gt;, is a Linux distribution based on Debian providing an
out-of-the box environment of a completely configured school
network. Immediately after installation a school server running all
services needed for a school network is set up just waiting for users
and machines being added via GOsa², a comfortable Web-UI. A netbooting
environment is prepared using PXE, so after initial installation of
the main server from CD, DVD or USB stick all other machines can be
installed via the network. The provided school server provides LDAP
database and Kerberos authentication service, centralized home
directories, DHCP server, web proxy and many other services. The
desktop contains
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html&quot;&gt;more
than 60 educational software packages&lt;/a&gt; and more are available from
the Debian archive, and schools can choose between KDE, Gnome, LXDE
and Xfce desktop environment.&lt;/p&gt;

&lt;p&gt;This is the fourth test release based on Debian Wheezy. Basically
this is an updated and slightly improved version compared to the
Squeeze release.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Software updates&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
  &lt;li&gt;Dropped ispell dictionaries from our default installation.&lt;/li&gt;
  &lt;li&gt;Dropped menu-xdg from the KDE desktop option, to drop the Debian
    submenu.  It was not included with Gnome, LXDE or Xfce, so this
    brings KDE in line with the others.&lt;/li&gt;
  &lt;li&gt;Dropped xdrawchem, xjig and xsok from our default installation as
    they don&#39;t have a desktop menu entry and thus won&#39;t show up in the
    menu now that menu-xdg was removed.&lt;/li&gt;
  &lt;li&gt;Removed the killer system to kill left behind processes on
    multi-user machines, as it was no longer able to understand when a
    X display was in use and killed the processes of the active users
    too.&lt;/li&gt;
  &lt;li&gt;Dropped the golearn (from goplay) package as the debtags in wheezy
    are too few to make the package useful.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;strong&gt;Other changes&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
  &lt;li&gt;Updated artwork matching http://wiki.debian.org/DebianArt/Themes/Joy
  &lt;li&gt;Multi-arch i386/amd64 USB stick ISO available.&lt;/li&gt;
  &lt;li&gt;Got rid of ispell/wordlist related debconf questions that showed
    up for some language options.&lt;/li&gt;
  &lt;li&gt;Switched to using http.debian.net as APT source by default.&lt;/li&gt;
  &lt;li&gt;Fixed proxy configuration on Main Server installations.&lt;/li&gt;
  &lt;li&gt;Changed LTSP setup to ask dpkg to use force-unsafe-io the same way
    d-i is doing it.&lt;/li&gt;
  &lt;li&gt;Made sure root and user passwords were not left behind in the
    debconf database after installation on Main Server installations.&lt;/li&gt;
  &lt;li&gt;Made Roaming Workstation dynamic setup more robust and added draft
    script setup-ad-client to hook a Roaming Workstation up to a
    Active Directory server instead of a Debian Edu Main Server.&lt;/li&gt;
  &lt;li&gt;Update system to install needed firmware packages during
    installation, to work properly in Wheezy.&lt;/li&gt;
  &lt;li&gt;Update system to handle hardware quirks (debian-edu-hwsetup).&lt;/li&gt;
  &lt;li&gt;Corrected PXE installation setup to properly pass selected desktop
    and keymap settings to PXE installation clients.&lt;/li&gt;
  &lt;li&gt;LTSP diskless workstations use sshfs by default, allowing them to
    work without adding them to DNS and NIS netgroups for NFS access.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;strong&gt;Known issues&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
  &lt;li&gt;No mass import of user account data in GOsa (ldif or csv)
    available yet (698840).&lt;/li&gt;
  &lt;li&gt;Artwork not enabled for all desktops.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;strong&gt;Where to get it&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;To download the multiarch netinstall CD release you can use&lt;/p&gt;
&lt;ul&gt;
  &lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-CD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-CD.iso&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-CD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-CD.iso&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-CD.iso .&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;The MD5SUM of this image is: 2b161a99d2a848c376d8d04e3854e30c
&lt;br&gt;The SHA1SUM of this image is: 498922e9c508c0a7ee9dbe1dfe5bf830d779c3c8&lt;/p&gt;

&lt;p&gt;To download the multiarch USB stick ISO release you can use&lt;/p&gt;
&lt;ul&gt;
  &lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-USB.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-USB.iso&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-USB.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-USB.iso&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.1+edu0~a3-USB.iso .&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;The MD5SUM of this image is: 25e808e403a4c15dbef1d13c37d572ac
&lt;br&gt;The SHA1SUM of this image is: 15ecfc93eb6b4f453b7eb0bc04b6a279262d9721&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How to report bugs&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&quot;&gt;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&lt;/a&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Automatically locate and install required firmware packages on Debian (Isenkram 0.4)</title>
                <link>http://people.skolelinux.org/pere/blog/Automatically_locate_and_install_required_firmware_packages_on_Debian__Isenkram_0_4_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Automatically_locate_and_install_required_firmware_packages_on_Debian__Isenkram_0_4_.html</guid>
                <pubDate>Tue, 25 Jun 2013 11:50:00 +0200</pubDate>
                <description>&lt;p&gt;It annoys me when the computer fail to do automatically what it is
perfectly capable of, and I have to do it manually to get things
working.  One such task is to find out what firmware packages are
needed to get the hardware on my computer working.  Most often this
affect the wifi card, but some times it even affect the RAID
controller or the ethernet card.  Today I pushed version 0.4 of the
&lt;a href=&quot;http://packages.qa.debian.org/isenkram&quot;&gt;Isenkram package&lt;/a&gt;
including a new script isenkram-autoinstall-firmware handling the
process of asking all the loaded kernel modules what firmware files
they want, find debian packages providing these files and install the
debian packages.  Here is a test run on my laptop:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
# isenkram-autoinstall-firmware 
info: kernel drivers requested extra firmware: ipw2200-bss.fw ipw2200-ibss.fw ipw2200-sniffer.fw
info: fetching http://http.debian.net/debian/dists/squeeze/Contents-i386.gz
info: locating packages with the requested firmware files
info: Updating APT sources after adding non-free APT source
info: trying to install firmware-ipw2x00
firmware-ipw2x00
firmware-ipw2x00
Preconfiguring packages ...
Selecting previously deselected package firmware-ipw2x00.
(Reading database ... 259727 files and directories currently installed.)
Unpacking firmware-ipw2x00 (from .../firmware-ipw2x00_0.28+squeeze1_all.deb) ...
Setting up firmware-ipw2x00 (0.28+squeeze1) ...
# 
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;When all the requested firmware is present, a simple message is
printed instead:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
# isenkram-autoinstall-firmware 
info: did not find any firmware files requested by loaded kernel modules.  exiting
# 
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;It could use some polish, but it is already working well and saving
me some time when setting up new machines. :)&lt;/p&gt;

&lt;p&gt;So, how does it work?  It look at the set of currently loaded
kernel modules, and look up each one of them using modinfo, to find
the firmware files listed in the module meta-information.  Next, it
download the Contents file from a nearby APT mirror, and search for
the firmware files in this file to locate the package with the
requested firmware file.  If the package is in the non-free section, a
non-free APT source is added and the package is installed using
&lt;tt&gt;apt-get install&lt;/tt&gt;.  The end result is a slightly better working
machine.&lt;/p&gt;

&lt;p&gt;I hope someone find time to implement a more polished version of
this script as part of the hw-detect debian-installer module, to
finally fix &lt;a href=&quot;http://bugs.debian.org/655507&quot;&gt;BTS report
#655507&lt;/a&gt;.  There really is no need to insert USB sticks with
firmware during a PXE install when the packages already are available
from the nearby Debian mirror.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The value of a good distro wide test suite...</title>
                <link>http://people.skolelinux.org/pere/blog/The_value_of_a_good_distro_wide_test_suite___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_value_of_a_good_distro_wide_test_suite___.html</guid>
                <pubDate>Sat, 22 Jun 2013 07:00:00 +0200</pubDate>
                <description>&lt;p&gt;In the &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt; project, we include a post-installation test suite,
which check that services are running, working, and return the
expected results.  It runs automatically just after the first boot on
test installations (using test ISOs), but not on production
installations (using non-test ISOs).  It test that the LDAP service is
operating, Kerberos is responding, DNS is replying, file systems are
online resizable, etc, etc.  And it check that the PXE service is
configured, which is the topic of this post.&lt;/p&gt;

&lt;p&gt;The last week I&#39;ve fixed the DVD and USB stick ISOs for our Debian
Edu Wheezy release.  These ISOs are supposed to be able to install a
complete system without any Internet connection, but for that to
happen all the needed packages need to be on them.  Thanks to our test
suite, I discovered that we had forgotten to adjust our PXE setup to
cope with the new names and paths used by the netboot d-i packages.
When Internet connectivity was available, the installer fall back to
using wget to fetch d-i boot images, but when offline it require
working packages to get it working.  And the packages changed name
from debian-installer-6.0-netboot-$arch to
debian-installer-7.0-netboot-$arch, we no longer pulled in the
packages during installation.  Without our test suite, I suspect we
would never have discovered this before release.  Now it is fixed
right after we got the ISOs operational.&lt;/p&gt;

&lt;p&gt;Another by-product of the test suite is that we can ask system
administrators with problems getting Debian Edu to work, to run the
test suite using &lt;tt&gt;/usr/sbin/debian-edu-test-install&lt;/tt&gt; and see if
any errors are detected.  This usually pinpoint the subsystem causing
the problem.&lt;/p&gt;

&lt;p&gt;If you want to help us help kids learn how to share and create,
please join us on
&lt;a href=&quot;irc://irc.debian.org/%23debian-edu&quot;&gt;#debian-edu on
irc.debian.org&lt;/a&gt; and the
&lt;a href=&quot;http://lists.debian.org/debian-edu/&quot;&gt;debian-edu@&lt;/a&gt; mailing
list.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Victor Nițu</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Victor_Ni_u.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Victor_Ni_u.html</guid>
                <pubDate>Mon, 17 Jun 2013 10:50:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and
Skolelinux&lt;/a&gt; distribution have users and contributors all around the
globe.  And a while back, an enterprising young man showed up on
&lt;a href=&quot;irc://irc.debian.org/%23debian-edu&quot;&gt;our IRC channel
#debian-edu&lt;/a&gt; and started asking questions about how Debian Edu
worked.  We answered as good as we could, and even convinced him to
help us with translations.  And today I managed to get an interview
with him, to learn more about him.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;m a 25 year old free software enthusiast, living in Romania,
which is also my country of origin. Back in 2009, at a New Year&#39;s Eve
party, I had a very nice &lt;strike&gt;beer&lt;/strike&gt; discussion with a
friend, when we realized we have no organised Debian community in our
country. A few days later, we put together the infrastructure for such
community and even gathered a nice Debian-ish crowd. Since then, I
began my quest as a free software hacker and activist and I am
constantly trying to cover as much ground as possible on that
field.&lt;/p&gt;

&lt;p&gt;A few years ago I founded a small web development company, which
provided me the flexible schedule I needed so much for my
activities. For the last 13 months, I have been the Technical Director
of &lt;a href=&quot;http://ceata.org/&quot;&gt;Fundația Ceata&lt;/a&gt;, which is a free
software activist organisation endorsed by the FSF and the FSFE, and
the only one we have in our country.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The idea of participating in the Debian Edu project was a surprise
even to me, since I never used it before I began getting involved in
it. This year I had a great opportunity to deliver a talk on
educational software, and I knew immediately where to look. It was a
love at first sight, since I was previously involved with some of the
technologies the project incorporates, and I rapidly found a lot of
ways to contribute.&lt;/p&gt;

&lt;p&gt;My first contributions consisted in translating the installer and
configuration dialogs, then I found some bugs to squash (I still
haven&#39;t fixed them yet though), and I even got my eyes on some other
areas where I can prove myself helpful. Since the appetite for free
software in my country is pretty low, I&#39;ll be happy to be the first
one around here advocating for the project&#39;s adoption in educational
environments, and maybe even get my hands dirty in creating a flavour
for our own needs. I am not used to make very advanced plannings, so
from now on, time will tell what I&#39;ll be doing next, but I think I
have a pretty consistent starting point.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Not a long time ago, I was in the position of configuring and
maintaining a LDAP server on some Debian derivative, and I must say it
took me a while. A long time ago, I was maintaining a bigger
Samba-powered infrastructure, and I must say I spent quite a lot of
time on it. I have similar stories about many of the services included
with Skolelinux, and the main advantage I see about it is the
out-of-the box availability of them, making it quite competitive when
it comes to managing a school&#39;s network, for example.&lt;/p&gt;

&lt;p&gt;Of course, there is more to say about Skolelinux than the
availability of the software included, its flexibility in various
scenarios is something I can&#39;t wait to experiment &quot;into the wild&quot; (I
only played with virtual machines so far). And I am sure there is a
lot more I haven&#39;t discovered yet about it, being so new within the
project.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;As usual, when it comes to Debian Blends, I see as the biggest
disadvantage the lack of a numerous team dedicated to the
project. Every day I see the same names in the changelogs, and I have
a constantly fear of the bus factor in this story.  I&#39;d like to see
Debian Edu advertised more as an entry point into the Debian
ecosystem, especially amongst newcomers and students. IMHO there are a
lot low-hanging fruits in terms of bug squashing, and enough
opportunities to get the feeling of the Debian Project&#39;s dynamics. Not
to mention it&#39;s a very fun blend to work on!&lt;/p&gt;

&lt;p&gt;Derived from the previous statement, is the delay in catching up
with the main Debian release and documentation. This is common though
to all blends and derivatives, but it&#39;s an issue we can all work
on.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I can hardly imagine myself spending a day without Vim, since my
daily routine covers writing code and hacking configuration files. I
am a fan of the Awesome window manager (but I also like the
Enlightenment project a lot!),
&lt;a href=&quot;http://www.claws-mail.org/‎&quot;&gt;Claws Mail&lt;/a&gt; due to its ease of
use and very configurable behaviour. Recently I fell in love with
&lt;a href=&quot;https://launchpad.net/redshift&quot;&gt;Redshift&lt;/a&gt;, which helps me
get through the night without headaches. Of course, there is much more
stuff in this bag, but I&#39;ll need a blog on my own for doing this!&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Well, on this field, I cannot do much more than experiment right
now. So, being far from having a recipe for success, I can only assume
that:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;schools would like to get rid of proprietary software&lt;/li&gt;

&lt;li&gt;students will love the openness of the system, and will want to
    experiment with it - maybe we need to harvest the native curiosity
    of teenagers more?&lt;/li&gt;

&lt;li&gt;there is no &quot;right one&quot; when it comes to strategies, but it would
    be useful to have some success stories published somewhere, so
    other can get some inspiration from them (I know I&#39;d promote
    them!)&lt;/li&gt;

&lt;li&gt;more active promotion - talks, conferences, even small school
    lectures can do magical things if they encounter at least one
    person interested. Who knows who that person might be? ;-)&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;I also see some problems in getting Skolelinux into schools; for
example, in our country we have a great deal of corruption issues, so
it might be hard(er) to fight against proprietary solutions. Also,
people who relied on commercial software for all their lives, would be
very hard to convert against their will.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Jonathan Carter</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Jonathan_Carter.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Jonathan_Carter.html</guid>
                <pubDate>Wed, 12 Jun 2013 09:50:00 +0200</pubDate>
                <description>&lt;p&gt;There is a certain cross-over between the
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux
project&lt;/a&gt; and &lt;a href=&quot;http://www.edubuntu.org/&quot;&gt;the Edubuntu
project&lt;/a&gt;, and for example the LTSP packages in Debian are a joint
effort between the projects.  One person with a foot in both camps is
Jonathan Carter, which I am now happy to present to you.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;m a South-African free software geek who lives in Cape Town. My
days vary quite a bit since I&#39;m involved in too many things. As I&#39;m
getting older I&#39;m learning how to focus a bit more :)&lt;/p&gt;

&lt;p&gt;I&#39;m also an Edubuntu contributor and I love when there are
opportunities for the Edubuntu and Debian Edu projects to benefit from
each other.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;ve been somewhat familiar with the project before, but I think my
first direct exposure to the project was when I met Petter
[Reinholdtsen] and Knut [Yrvin] at the Edubuntu summit in 2005 in
London. They provided great feedback that helped the bootstrapping of
Edubuntu. Back then Edubuntu (and even Ubuntu) was still very new and
it was great getting input from people who have been around longer. I
was also still very excitable and said yes to everything and to this
day I have a big todo list backlog that I&#39;m catching up with. I think
over the years the relationship between Edubuntu and Debian-Edu has
been gradually improving, although I think there&#39;s a lot that we could
still improve on in terms of working together on packages. I&#39;m sure
we&#39;ll get there one day.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Debian itself already has so many advantages. I could go on about
it for pages, but in essence I love that it&#39;s a very honest project
that puts its users first with no hidden agendas and also produces
very high quality work.&lt;/p&gt;

&lt;p&gt;I think the advantage of Debian Edu is that it makes many common
set-up tasks simpler so that administrators can get up and running
with a lot less effort and frustration. At the same time I think it
helps to standardise installations in schools so that it&#39;s easier for
community members and commercial suppliers to support.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I had to re-type this one a few times because I&#39;m trying to
separate &quot;disadvantages&quot; from &quot;areas that need improvement&quot; (which is
what I originally rambled on about)&lt;/p&gt;

&lt;p&gt;The biggest disadvantage I can think of is lack of manpower. The
project could do so much more if there were more good contributors. I
think some of the problems are external too. Free software and free
content in education is a no-brainer but it takes some time to catch
on. When you&#39;ve been working with the same proprietary eco-system for
years and have gotten used to it, it can be hard to adjust to some
concepts in the free software world. It would be nice if there were
more Debian Edu consultants across the world. I&#39;d love to be one
myself but I&#39;m already so over-committed that it&#39;s just not possible
currently.&lt;/p&gt;

&lt;p&gt;I think the best short-term solution to that large-scale problem is
for schools to be pro-active and share their experiences and grow
their skills in-house. I&#39;m often saddened to see how much money
educational institutions spend on 3rd party solutions that they don&#39;t
have access to after the service has ended and they could&#39;ve gotten so
much more value otherwise by being more self-sustainable and
autonomous.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My main laptop dual-boots between Debian and Windows 7. I was
Windows free for years but started dual-booting again last year for
some games which help me focus and relax (Starcraft II in
particular). Gaming support on Linux is improving in leaps and bounds
so I suppose I&#39;ll soon be able to regain that disk space :)&lt;/p&gt;

&lt;p&gt;Besides that I rely on Icedove, Chromium, Terminator, Byobu, irssi,
git, Tomboy, KVM, VLC and LibreOffice. Recently I&#39;ve been torn on
which desktop environment I like and I&#39;m taking some refuge in Xfce
while I figure that out. I like tools that keep things simple. I enjoy
Python and shell scripting. I went to an Arduino workshop recently and
it was awesome seeing how easy and simple the IDE software was to get
up and running in Debian compared to the users running Windows and OS
X.&lt;/p&gt;

&lt;p&gt;I also use mc which some people frown upon slightly. I got used to
using Norton Commander in the early 90&#39;s and it stuck (I think the
people who sneer at it is just jealous that they don&#39;t know how to use
it :p)

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I think trying to force it is unproductive. I also think that in
many cases it&#39;s appropriate for schools to use non-free systems and I
don&#39;t think that there&#39;s any particular moral or ethical problem with
that.&lt;/p&gt;

&lt;p&gt;I do think though that free software can already solve so so many
problems in educational institutions and it&#39;s just a shame not taking
advantage of that.&lt;/p&gt;

&lt;p&gt;I also think that some curricula need serious review. For example,
some areas of the world rely heavily on very specific versions of MS
Office, teaching students to parrot menu items instead of learning the
general concepts. I think that&#39;s very unproductive because firstly, MS
Office&#39;s interface changes drastically every few years and on top of
that it also locks in a generation to a product that might not be the
best solution for them.&lt;/p&gt;

&lt;p&gt;To answer your question, I believe that the right strategy is to
educate and inform, giving someone the information they require to
make a decision that would work for them.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Fixing the Linux black screen of death on machines with Intel HD video</title>
                <link>http://people.skolelinux.org/pere/blog/Fixing_the_Linux_black_screen_of_death_on_machines_with_Intel_HD_video.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Fixing_the_Linux_black_screen_of_death_on_machines_with_Intel_HD_video.html</guid>
                <pubDate>Tue, 11 Jun 2013 11:00:00 +0200</pubDate>
                <description>&lt;p&gt;When installing RedHat, Fedora, Debian and Ubuntu on some machines,
the screen just turn black when Linux boot, either during installation
or on first boot from the hard disk.  I&#39;ve seen it once in a while the
last few years, but only recently understood the cause.  I&#39;ve seen it
on HP laptops, and on my latest acquaintance the Packard Bell laptop.
The reason seem to be in the wiring of some laptops.  The system to
control the screen background light is inverted, so when Linux try to
turn the brightness fully on, it end up turning it off instead.  I do
not know which Linux drivers are affected, but this post is about the
i915 driver used by the
&lt;a href=&quot;http://www.linlap.com/packard_bell_easynote_lv&quot;&gt;Packard Bell
EasyNote LV&lt;/a&gt;, Thinkpad X40 and many other laptops.&lt;/p&gt;

&lt;p&gt;The problem can be worked around two ways.  Either by adding
i915.invert_brightness=1 as a kernel option, or by adding a file in
/etc/modprobe.d/ to tell modprobe to add the invert_brightness=1
option when it load the i915 kernel module.  On Debian and Ubuntu, it
can be done by running these commands as root:&lt;/p&gt;

&lt;pre&gt;
echo options i915 invert_brightness=1 | tee /etc/modprobe.d/i915.conf
update-initramfs -u -k all
&lt;/pre&gt;

&lt;p&gt;Since March 2012 there is
&lt;a href=&quot;http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca20efb1a9c2efefc28ad2867e5d6c3f5e1955&quot;&gt;a
mechanism in the Linux kernel&lt;/a&gt; to tell the i915 driver which
hardware have this problem, and get the driver to invert the
brightness setting automatically.  To use it, one need to add a row in
&lt;a href=&quot;http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/i915/intel_display.c&quot;&gt;the
intel_quirks array&lt;/a&gt; in the driver source
&lt;tt&gt;drivers/gpu/drm/i915/intel_display.c&lt;/tt&gt; (look for &quot;&lt;tt&gt;static
struct intel_quirk intel_quirks&lt;/tt&gt;&quot;), specifying the PCI device
number (vendor number 8086 is assumed) and subdevice vendor and device
number.&lt;/p&gt;

&lt;p&gt;My Packard Bell EasyNote LV got this output from &lt;tt&gt;lspci
-vvnn&lt;/tt&gt; for the video card in question:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
00:02.0 VGA compatible controller [0300]: Intel Corporation \
    3rd Gen Core processor Graphics Controller [8086:0156] \
    (rev 09) (prog-if 00 [VGA controller])
 Subsystem: Acer Incorporated [ALI] Device [1025:0688]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- \
    ParErr- Stepping- SE RR- FastB2B- DisINTx+
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast &gt;TAbort- \
    &lt;TAbort- &lt;MAbort-&gt;SERR- &lt;PERR- INTx-
 Latency: 0
 Interrupt: pin A routed to IRQ 42
 Region 0: Memory at c2000000 (64-bit, non-prefetchable) [size=4M]
 Region 2: Memory at b0000000 (64-bit, prefetchable) [size=256M]
 Region 4: I/O ports at 4000 [size=64]
 Expansion ROM at &lt;unassigned&gt; [disabled]
 Capabilities: &lt;access denied&gt;
 Kernel driver in use: i915
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The resulting intel_quirks entry would then look like this:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
struct intel_quirk intel_quirks[] = {
       ...
        /* Packard Bell EasyNote LV11HC needs invert brightness quirk */
        { 0x0156, 0x1025, 0x0688, quirk_invert_brightness },
       ...
}
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;According to the kernel module instructions (as seen using
&lt;tt&gt;modinfo i915&lt;/tt&gt;), information about hardware needing the
invert_brightness flag should be sent to the
&lt;a href=&quot;http://lists.freedesktop.org/mailman/listinfo/dri-devel&quot;&gt;dri-devel
(at) lists.freedesktop.org&lt;/a&gt; mailing list to reach the kernel
developers.  But my email about the laptop sent 2013-06-03 have not
yet shown up in
&lt;a href=&quot;http://lists.freedesktop.org/archives/dri-devel/2013-June/thread.html&quot;&gt;the
web archive for the mailing list&lt;/a&gt;, so I suspect they do not accept
emails from non-subscribers.  Because of this, I sent my patch also to
the Debian bug tracking system instead as
&lt;a href=&quot;http://bugs.debian.org/710938&quot;&gt;BTS report #710938&lt;/a&gt;, to make
sure the patch is not lost.&lt;/p&gt;

&lt;p&gt;Unfortunately, it is not enough to fix the kernel to get Laptops
with this problem working properly with Linux.  If you use Gnome, your
worries should be over at this point.  But if you use KDE, there is
something in KDE ignoring the invert_brightness setting and turning on
the screen during login.  I&#39;ve reported it to Debian as
&lt;a href=&quot;http://bugs.debian.org/711237&quot;&gt;BTS report #711237&lt;/a&gt;, and
have no idea yet how to figure out exactly what subsystem is doing
this.  Perhaps you can help?  Perhaps you know what the Gnome
developers did to handle this, and this can give a clue to the KDE
developers?  Or you know where in KDE the screen brightness is changed
during login?  If so, please update the BTS report (or get in touch if
you do not know how to update BTS).&lt;/p&gt;

&lt;p&gt;Update 2013-07-19: The correct fix for this machine seem to be
acpi_backlight=vendor, to disable ACPI backlight support completely,
as the ACPI information on the machine is trash and it is better to
leave it to the intel video driver to control the screen
backlight.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Third alpha release of Debian Edu / Skolelinux based on Debian Wheezy</title>
                <link>http://people.skolelinux.org/pere/blog/Third_alpha_release_of_Debian_Edu___Skolelinux_based_on_Debian_Wheezy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Third_alpha_release_of_Debian_Edu___Skolelinux_based_on_Debian_Wheezy.html</guid>
                <pubDate>Mon, 10 Jun 2013 22:50:00 +0200</pubDate>
                <description>&lt;p&gt;The third wheezy based alpha release of Debian Edu was wrapped up
today.  This is the release announcement:&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;New features for Debian Edu 7.0.0 alpha2 released
2013-06-10&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;This is the release notes for for Debian Edu / Skolelinux 7.0.0 edu
alpha2, based on Debian with codename &quot;Wheezy&quot;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;About Debian Edu and Skolelinux&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu, also known as
Skolelinux&lt;/a&gt;, is a Linux distribution based on Debian providing an
out-of-the box environment of a completely configured school
network. Immediately after installation a school server running all
services needed for a school network is set up just waiting for users
and machines being added via GOsa², a comfortable Web-UI. A netbooting
environment is prepared using PXE, so after initial installation of
the main server from CD, DVD or USB stick all other machines can be
installed via the network. The provided school server provides LDAP
database and Kerberos authentication service, centralized home
directories, DHCP server, web proxy and many other services. The
desktop contains
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html&quot;&gt;more
than 60 educational software packages&lt;/a&gt; and more are available from
the Debian archive, and schools can choose between KDE, Gnome, LXDE
and Xfce desktop environment.&lt;/p&gt;

&lt;p&gt;This is the third test release based on Debian Wheezy. Basically
this is an updated and slightly improved version compared to the
Squeeze release.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Software updates&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Iceweasel was updated from 10 to 17. (DSA 2699-1) 
&lt;li&gt;Updated libxv (DSA-2674), libxvmc (DSA-2675), libxfixes (DSA-2676), libxrender (DSA-2677), mesa (DSA-2678), xserver-xorg-video-openchrome (DSA-2679), libxt (DSA-2680), libxcursor (DSA-2681), libxext (DSA-2682), libxi (DSA-2683), libxrandr (DSA-2684), libxp (DSA-2685), libxcb (DSA-2686), libfs (DSA-2687), libxres (DSA-2688), libxtst (DSA-2689), libxxf86dga (DSA-2690), libxinerama (DSA-2691), libxxf86vm (DSA-2692), libx11 (DSA-2693), chromium-browser (DSA-2695), gnutls26 (DSA-2697), wireshark (DSA-2700), krb5 (DSA-2701), telepathy-gabble (DSA-2702) and subversion (DSA-2703). 
&lt;li&gt;Switched xrdp on thin client servers to use tightvncserver instead of xvnc4. 
&lt;li&gt;Now install software oscilloscope xoscope by default. 
&lt;li&gt;Now install music tools gtick, lingot and pianobooster by default. 

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Other changes&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;The subnet-change script is now able to change all files needing a change on the main-server when changing the IP network used. 
&lt;li&gt;Updated translation of the installation. 
&lt;li&gt;New Romanian translation. 
&lt;li&gt;Fix security problem causing root and first user password to no longer show up in /var/cache/debconf/templates.dat. 
&lt;li&gt;Fix roaming workstation setup (Closed in libpam-mklocaluser/0.8, libpam-mklocaluser/0.8~deb7u1: #706753: libpam-mklocaluser: Fail to create local user during first login).
&lt;li&gt;Made roaming workstation setup more robust in non-Debian Edu environments. 
&lt;li&gt;New script debian-edu-bless to transform a Debian installation to a Debian Edu profile. 
&lt;li&gt;Adjust Iceweasel setup to improve performance when $HOME is on NFS. 
&lt;li&gt;More testsuite tests. 
&lt;li&gt;Make automatic proxy configuration more robust. 
&lt;li&gt;Adjust GOsa² GUI configuration. 

&lt;li&gt;Update thin client and diskless workstation setup to work with
LTSP in Wheezy.&lt;/li&gt;

&lt;li&gt;Diskless workstations now run out of the box -- no need to set
them up with GOsa².&lt;/li&gt;

&lt;li&gt;Update IMAP server setup. &lt;/li&gt;

&lt;li&gt;Fix login into Skolelinux Backup Tool (Closed in
slbackup-php/0.4.4-1: #700257: slbackup-php: Fails to submit correctly
entered password). &lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Known issues&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;DVD binary and source images are not yet ready.&lt;/li&gt;

&lt;li&gt;No mass import of user account data in GOsa (ldif or csv)
available yet (Open in gosa/2.7.4-4: #698840: gosa-plugin-ldapmanager:
missing import feature).&lt;/li&gt;

&lt;li&gt;Missing artwork for the KDE desktop (and probably a few others). &lt;/li&gt;

&lt;li&gt;KDE Debian submenu lacks icons (Closed: #502192: menu-xdg: invents
own icon names instead of using existing). This will remain
unfixed.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Where to get it&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;To download the multiarch netinstall CD release you can use&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.0+edu0~a2-CD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.0+edu0~a2-CD.iso&lt;/a&gt;&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.0+edu0~a2-CD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu-7.0+edu0~a2-CD.iso&lt;/a&gt;&lt;/li&gt;

&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu-7.0+edu0~a2-CD.iso .&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;The MD5SUM of this image is: 27bbcace407743382f3c42c08dbe8178 
&lt;br&gt;The SHA1SUM of this image is: e35f7d7908566cd3075375b3721fa10ee420d419&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How to report bugs&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&quot;&gt;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&lt;/a&gt;
</description>
        </item>
        
        <item>
                <title>Is there a PHP expert in the building?  Debian Edu need help!</title>
                <link>http://people.skolelinux.org/pere/blog/Is_there_a_PHP_expert_in_the_building___Debian_Edu_need_help_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Is_there_a_PHP_expert_in_the_building___Debian_Edu_need_help_.html</guid>
                <pubDate>Wed, 5 Jun 2013 17:50:00 +0200</pubDate>
                <description>&lt;p&gt;Here is a call for help from the Debian Edu / Skolelinux project.
We have two problems blocking the release of the Wheezy version we
hope to get released soon.  The two problems require some with PHP
skills, and we seem to lack anyone with both time and PHP skills in
the project:

&lt;ol&gt;

&lt;li&gt;It is impossible to log into the slbackup web interface
  (slbackup-php) using the root user and password.  This is
  &lt;a href=&quot;http://bugs.debian.org/700257&quot;&gt;BTS report #700257&lt;/a&gt;.
  This used to work, but stopped working some time since Squeeze.
  Perhaps some obsolete PHP feature was used?&lt;/li&gt;

&lt;li&gt;It is not possible to &quot;mass import&quot; user lists in Gosa, neither
  using ldif nor using CSV files.  The feature was disabled after a
  major rewrite of Gosa, and need to be ported to the new system.
  This is &lt;a href=&quot;http://bugs.debian.org/698840&quot;&gt;BTS report
  #698840&lt;/a&gt;.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;If you can help us, please join us on IRC
(&lt;a href=&quot;irc://irc.debian.org/%23debian-edu&quot;&gt;#debian-edu on
irc.debian.org&lt;/a&gt;) and provide patches via the BTS.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Cédric Boutillier</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__C_dric_Boutillier.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__C_dric_Boutillier.html</guid>
                <pubDate>Tue, 4 Jun 2013 10:30:00 +0200</pubDate>
                <description>&lt;p&gt;It has been a while since my last English
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt;
interview last November.  But the developers and translators are still
pulling along to get the Wheezy based release out the door, and this
time I managed to get an interview from one of the French translators
in the project, Cédric Boutillier.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am 34 year old. I live near Paris, France. I am an assistant
professor in probability theory. I spend my daytime teaching
mathematics at the university and doing fundamental research in
probability in connexion with combinatorics and statistical physics.&lt;/p&gt;

&lt;p&gt;I have been involved in the Debian project for a couple of years
and became Debian Developer a few months ago. I am working on Ruby
packaging, publicity and translation.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I came to the Debian Edu project after a call for translation of
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/Documentation/Manuals&quot;&gt;the
Debian Edu manual&lt;/a&gt; for the release of Debian Edu Squeeze. Since
then, I have been working on updating the French translation of the
manual.

&lt;p&gt;I had the opportunity to make an installation of Debian Edu in a
virtual machine when I was preparing localised version of some screen
shots for the manual. I was amazed to see it worked out of the box and
how comprehensive the list of software installed by default was.&lt;/p&gt;

&lt;p&gt;What amazed me was the complete network infrastructure directly
ready to use, which can and the nice administration interface provided
by &lt;a href=&quot;https://oss.gonicus.de/labs/gosa/&quot;&gt;GOsa²&lt;/a&gt;.  What pleased
me also was the fact that among the software installed by default,
there were many &quot;traditional&quot; educative software to learn languages,
to count, to program... but also software to develop creativity and
artistic skills with music (&lt;a href=&quot;http://ardour.org/&quot;&gt;Ardour&lt;/a&gt;,
&lt;a href=&quot;http://audacity.sourceforge.net/&quot;&gt;Audacity&lt;/a&gt;) and
movies/animation (I was especially thinking of
&lt;a href=&quot;http://linuxstopmotion.sourceforge.net/&quot;&gt;Stopmotion&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;I am following the development of Debian Edu and am hanging out on
&lt;a href=&quot;irc://irc.debian.org/%23debian-edu&quot;&gt;#debian-edu&lt;/a&gt;.
Unfortunately, I don&#39;t much time to get more involved in this
beautiful project.&lt;/p&gt;
  
&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;For me, the main advantages of Skolelinux/Debian Edu are its
community of experts and its precise documentation, as well as the
fact that it provides a solution ready to use.&lt;/p&gt;
  
&lt;p&gt;I would add also the fact that it is based on the rock solid Debian
distribution, which ensures stability and provides a huge collection
of educational free software.&lt;/p&gt;
  
&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Maybe the lack of manpower to do lobbying on the
project. Sometimes, people who need to take decisions concerning IT do
not have all the elements to evaluate properly free software
solutions. The fact that support by a company may be difficult to find
is probably a problem if the school does not have IT personnel.&lt;/p&gt;

&lt;p&gt;One can find support from a company by looking at
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/Help/ProfessionalHelp&quot;&gt;the
wiki dokumentation&lt;/a&gt;, where some countries already have a number of
companies providing support for Debian Edu, like Germany or
Norway. This list is easy to find readily from the manual. However,
for other countries, like France, the list is empty. I guess that
consultants proposing support for Debian would be able to provide some
support for Debian Edu as well.&lt;/p&gt;
  
&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am using the KDE Plasma Desktop. But the pieces of software I use
most runs in a terminal: Mutt and OfflineIMAP for emails, latex for
scientific documents, mpd for music. VIM is my editor of choice.  I am
also using the mathematical software
&lt;a href=&quot;http://www.scilab.org/en/scilab/about‎&quot;&gt;Scilab&lt;/a&gt; and
&lt;a href=&quot;http://www.sagemath.org/index.html‎&quot;&gt;Sage&lt;/a&gt; (built from
source as not completely packaged for Debian, yet).

&lt;p&gt;&lt;strong&gt;Do you have any suggestions for teachers interested in
using the free software in Debian to teach mathematics and
statistics?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I do not have any &quot;nice&quot; recommendations for statistics. At our
university, we use both &lt;a href=&quot;http://www.r-project.org/‎&quot;&gt;R&lt;/a&gt; and
Scilab to teach statistics and probabilistic simulations. For
geometry, there are nice programs:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;http://www.drgeo.eu/&quot;&gt;drgeo&lt;/a&gt; and
&lt;a href=&quot;http://edu.kde.org/applications/all/kig‎&quot;&gt;kig&lt;/a&gt; to do
constructions in planar geometry

&lt;li&gt;&lt;a href=&quot;http://www.geom.uiuc.edu/software/download/kali.html&quot;&gt;kali&lt;/a&gt;
to discover symmetry groups (the so-called wallpapers and frieze
groups), although the interface looks a bit old.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;I like also
&lt;a href=&quot;http://edu.kde.org/applications/all/cantor&quot;&gt;cantor&lt;/a&gt;, which
provides a uniform interface to SciLab, Sage,
&lt;a href=&quot;http://directory.fsf.org/wiki/Octave‎&quot;&gt;Octave&lt;/a&gt;, etc...&lt;/p&gt;
  
&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My suggestions would be to&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;advertise the reduction of costs when free software is used.&lt;/li&gt;

&lt;li&gt;communicate about the quality of free software projects, using
    well known examples like Firefox, ThunderBird and
    OpenOffice.org/LibreOffice.&lt;/li&gt;

&lt;li&gt;advertise the living and strong community around the project.&lt;/li&gt;

&lt;li&gt;show that it is not more difficult to use than any other
    system.&lt;/li&gt;

&lt;/ul&gt;
</description>
        </item>
        
        <item>
                <title>Educational applications included in Debian Edu / Skolelinux (the screenshot collection :-)</title>
                <link>http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html</guid>
                <pubDate>Sat, 1 Jun 2013 23:50:00 +0200</pubDate>
                <description>&lt;p&gt;Included in &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt;, there are quite a lot of educational software.
Created to help teachers teach, and pupils learn.  We have tried to
tag them all using debtags use::learning and role::program, and using
the debtags I was happy to be able to create a collage of the
educational software packages installed by default, sorted by the
debtag field.  Here it is.  Click on a image to learn more about the
program.&lt;/p&gt;

&lt;!-- for f in $(debtags tagcat|grep field::|awk &#39;{print $2}&#39;); do   echo; echo &quot;&lt;p&gt;&lt;strong&gt;$f&lt;/strong&gt;&lt;/p&gt;&quot;; echo &quot;&lt;p&gt;&quot;;   (     for p in $(debtags search --names &quot;use::learning &amp;&amp; interface::x11 &amp;&amp; role::program &amp;&amp; $f&quot;); do img=&quot;&lt;img src=&#39;http://screenshots.debian.net/thumbnail/$p&#39; alt=&#39;$p&#39;&gt;&quot;; if dpkg -s $p &gt; /dev/null 2&gt;&amp;1; then           echo &quot;&lt;a href=&#39;http://packages.qa.debian.org/$p&#39;&gt;$img&lt;/a&gt;&quot;; fi;     done;   ) | LANG=C sort; echo &quot;&lt;/p&gt;&quot;; done --&gt;

&lt;p&gt;&lt;strong&gt;field::arts&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=audacity&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/audacity.png&#39; alt=&#39;audacity&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=childsplay&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/childsplay.png&#39; alt=&#39;childsplay&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=denemo&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/denemo.png&#39; alt=&#39;denemo&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=freebirth&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/freebirth.png&#39; alt=&#39;freebirth&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gcompris&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gcompris.png&#39; alt=&#39;gcompris&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gimp&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gimp.png&#39; alt=&#39;gimp&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=hydrogen&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/hydrogen.png&#39; alt=&#39;hydrogen&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=lilypond&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/lilypond.png&#39; alt=&#39;lilypond&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=lmms&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/lmms.png&#39; alt=&#39;lmms&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=rosegarden&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/rosegarden.png&#39; alt=&#39;rosegarden&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=scribus&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/scribus.png&#39; alt=&#39;scribus&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=solfege&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/solfege.png&#39; alt=&#39;solfege&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=stopmotion&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/stopmotion.png&#39; alt=&#39;stopmotion&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=tuxpaint&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/tuxpaint.png&#39; alt=&#39;tuxpaint&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::astronomy&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=celestia-gnome&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/celestia-gnome.png&#39; alt=&#39;celestia-gnome&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gpredict&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gpredict.png&#39; alt=&#39;gpredict&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=kstars&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/kstars.png&#39; alt=&#39;kstars&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=planets&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/planets.png&#39; alt=&#39;planets&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=stellarium&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/stellarium.png&#39; alt=&#39;stellarium&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=xplanet&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/xplanet.png&#39; alt=&#39;xplanet&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::biology:structural&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=pymol&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/pymol.png&#39; alt=&#39;pymol&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::chemistry&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=atomix&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/atomix.png&#39; alt=&#39;atomix&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=chemtool&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/chemtool.png&#39; alt=&#39;chemtool&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=easychem&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/easychem.png&#39; alt=&#39;easychem&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gchempaint&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gchempaint.png&#39; alt=&#39;gchempaint&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gdis&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gdis.png&#39; alt=&#39;gdis&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=ghemical&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/ghemical.png&#39; alt=&#39;ghemical&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gperiodic&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gperiodic.png&#39; alt=&#39;gperiodic&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=kalzium&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/kalzium.png&#39; alt=&#39;kalzium&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=pymol&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/pymol.png&#39; alt=&#39;pymol&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=viewmol&#39;&gt;[viewmol]&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=xdrawchem&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/xdrawchem.png&#39; alt=&#39;xdrawchem&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::electronics&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gcompris&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gcompris.png&#39; alt=&#39;gcompris&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gpsim&#39;&gt;[gpsim]&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::geography&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=kgeography&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/kgeography.png&#39; alt=&#39;kgeography&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=marble&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/marble.png&#39; alt=&#39;marble&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=xplanet&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/xplanet.png&#39; alt=&#39;xplanet&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::linguistics&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gcompris&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gcompris.png&#39; alt=&#39;gcompris&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=kanagram&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/kanagram.png&#39; alt=&#39;kanagram&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=khangman&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/khangman.png&#39; alt=&#39;khangman&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=klettres&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/klettres.png&#39; alt=&#39;klettres&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=parley&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/parley.png&#39; alt=&#39;parley&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::mathematics&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=childsplay&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/childsplay.png&#39; alt=&#39;childsplay&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=drgeo&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/drgeo.png&#39; alt=&#39;drgeo&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gcompris&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gcompris.png&#39; alt=&#39;gcompris&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=geogebra&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/geogebra.png&#39; alt=&#39;geogebra&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=geomview&#39;&gt;[geomview]&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=grace&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/grace.png&#39; alt=&#39;grace&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=graphmonkey&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/graphmonkey.png&#39; alt=&#39;graphmonkey&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=graphthing&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/graphthing.png&#39; alt=&#39;graphthing&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=kalgebra&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/kalgebra.png&#39; alt=&#39;kalgebra&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=kbruch&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/kbruch.png&#39; alt=&#39;kbruch&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=kig&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/kig.png&#39; alt=&#39;kig&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=kmplot&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/kmplot.png&#39; alt=&#39;kmplot&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=mathwar&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/mathwar.png&#39; alt=&#39;mathwar&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=rocs&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/rocs.png&#39; alt=&#39;rocs&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=scratch&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/scratch.png&#39; alt=&#39;scratch&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=tuxmath&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/tuxmath.png&#39; alt=&#39;tuxmath&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=xabacus&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/xabacus.png&#39; alt=&#39;xabacus&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::physics&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gcompris&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gcompris.png&#39; alt=&#39;gcompris&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=step&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/step.png&#39; alt=&#39;step&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;field::TODO&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=blinken&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/blinken.png&#39; alt=&#39;blinken&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=cgoban&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/cgoban.png&#39; alt=&#39;cgoban&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=childsplay&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/childsplay.png&#39; alt=&#39;childsplay&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gcompris&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gcompris.png&#39; alt=&#39;gcompris&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gnuchess&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gnuchess.png&#39; alt=&#39;gnuchess&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gnugo&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gnugo.png&#39; alt=&#39;gnugo&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=gtans&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/gtans.png&#39; alt=&#39;gtans&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=ktouch&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/ktouch.png&#39; alt=&#39;ktouch&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=librecad&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/librecad.png&#39; alt=&#39;librecad&#39;&gt;&lt;/a&gt;
&lt;a href=&#39;http://packages.debian.org/search?searchon=names&amp;exact=1&amp;suite=all&amp;section=all&amp;keywords=scratch&#39;&gt;&lt;img src=&#39;http://people.skolelinux.org/pere/blog/images/2013-06-01-debian-edu-apps/scratch.png&#39; alt=&#39;scratch&#39;&gt;&lt;/a&gt;
&lt;/p&gt;

&lt;p&gt;In total, 61 applications.  3 of them lacked screen shots on
&lt;a href=&quot;http://screenshot.debian.net&quot;&gt;screenshot.debian.net&lt;/a&gt;.  If
you know of some packages we should install by default, please let us
know on &lt;a href=&quot;irc://irc.debian.org/%23debian-edu&quot;&gt;IRC, #debian-edu
on irc.debian.org&lt;/a&gt;, or our
&lt;a href=&quot;http://lists.debian.org/debian-edu/&quot;&gt;mailing list
debian-edu@&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to install Linux on a Packard Bell Easynote LV preinstalled with Windows 8</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_install_Linux_on_a_Packard_Bell_Easynote_LV_preinstalled_with_Windows_8.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_install_Linux_on_a_Packard_Bell_Easynote_LV_preinstalled_with_Windows_8.html</guid>
                <pubDate>Mon, 27 May 2013 15:20:00 +0200</pubDate>
                <description>&lt;p&gt;Two days ago, I asked
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/How_can_I_install_Linux_on_a_Packard_Bell_Easynote_LV_preinstalled_with_Windows_8_.html&quot;&gt;how
I could install Linux on a Packard Bell EasyNote LV computer
preinstalled with Windows 8&lt;/a&gt;.  I found a solution, but am horrified
with the obstacles put in the way of Linux users on a laptop with UEFI
and Windows 8.&lt;/p&gt;

&lt;p&gt;I never found out if the cause of my problems were the use of UEFI
secure booting or fast boot.  I suspect fast boot was the problem,
causing the firmware to boot directly from HD without considering any
key presses and alternative devices, but do not know UEFI settings
enough to tell.&lt;/p&gt;

&lt;p&gt;There is no way to install Linux on the machine in question without
opening the box and disconnecting the hard drive!  This is as far as I
can tell, the only way to get access to the firmware setup menu
without accepting the Windows 8 license agreement.  I am told (and
found description on how to) that it is possible to configure the
firmware setup once booted into Windows 8.  But as I believe the terms
of that agreement are completely unacceptable, accepting the license
was never an alternative.  I do not enter agreements I do not intend
to follow.&lt;/p&gt;

&lt;p&gt;I feared I had to return the laptops and ask for a refund, and
waste many hours on this, but luckily there was a way to get it to
work.  But I would not recommend it to anyone planning to run Linux on
it, and I have become sceptical to Windows 8 certified laptops.  Is
this the way Linux will be forced out of the market place, by making
it close to impossible for &quot;normal&quot; users to install Linux without
accepting the Microsoft Windows license terms?  Or at least not
without risking to loose the warranty?&lt;/p&gt;

&lt;p&gt;I&#39;ve updated the
&lt;a href=&quot;http://www.linlap.com/packard_bell_easynote_lv&quot;&gt;Linux Laptop
wiki page for Packard Bell EasyNote LV&lt;/a&gt;, to ensure the next person
do not have to struggle as much as I did to get Linux into the
machine.&lt;/p&gt;

&lt;p&gt;Thanks to Bob Rosbag, Florian Weimer, Philipp Kern, Ben Hutching,
Michael Tokarev and others for feedback and ideas.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How can I install Linux on a Packard Bell Easynote LV preinstalled with Windows 8?</title>
                <link>http://people.skolelinux.org/pere/blog/How_can_I_install_Linux_on_a_Packard_Bell_Easynote_LV_preinstalled_with_Windows_8_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_can_I_install_Linux_on_a_Packard_Bell_Easynote_LV_preinstalled_with_Windows_8_.html</guid>
                <pubDate>Sat, 25 May 2013 18:20:00 +0200</pubDate>
                <description>&lt;p&gt;I&#39;ve run into quite a problem the last few days.  I bought three
new laptops for my parents and a few others.  I bought Packard Bell
Easynote LV to run Kubuntu on and use as their home computer.  But I
am completely unable to figure out how to install Linux on it.  The
computer is preinstalled with Windows 8, and I suspect it uses UEFI
instead of a BIOS to boot.&lt;/p&gt;

&lt;p&gt;The problem is that I am unable to get it to PXE boot, and unable
to get it to boot the Linux installer from my USB stick.  I have yet
to try the DVD install, and still hope it will work.  when I turn on
the computer, there is no information on what buttons to press to get
the normal boot menu.  I expect to get some boot menu to select PXE or
USB stick booting.  When booting, it first ask for the language to
use, then for some regional settings, and finally if I will accept the
Windows 8 terms of use.  As these terms are completely unacceptable to
me, I have no other choice but to turn off the computer and try again
to get it to boot the Linux installer.&lt;/p&gt;

&lt;p&gt;I have gathered my findings so far on a Linlap page about the
&lt;a href=&quot;http://www.linlap.com/packard_bell_easynote_lv&quot;&gt;Packard Bell
EasyNote LV&lt;/a&gt; model.  If you have any idea how to get Linux
installed on this machine, please get in touch or update that wiki
page.  If I can&#39;t find a way to install Linux, I will have to return
the laptop to the seller and find another machine for my parents.&lt;/p&gt;

&lt;p&gt;I wonder, is this the way Linux will be forced out of the market
using UEFI and &quot;secure boot&quot; by making it impossible to install Linux
on new Laptops?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to transform a Debian based system to a Debian Edu installation</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_transform_a_Debian_based_system_to_a_Debian_Edu_installation.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_transform_a_Debian_based_system_to_a_Debian_Edu_installation.html</guid>
                <pubDate>Fri, 17 May 2013 11:50:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt; is
an operating system based on Debian intended for use in schools.  It
contain a turn-key solution for the computer network provided to
pupils in the primary schools.  It provide both the central server,
network boot servers and desktop environments with heaps of
educational software.  The project was founded almost 12 years ago,
2001-07-02.  If you want to support the project, which is in need for
cash to fund developer gatherings and other project related activity,
&lt;a href=&quot;http://www.linuxiskolen.no/slxdebianlabs/donations.html&quot;&gt;please
donate some money&lt;/a&gt;.

&lt;p&gt;A topic that come up again and again on the Debian Edu mailing
lists and elsewhere, is the question on how to transform a Debian or
Ubuntu installation into a Debian Edu installation.  It isn&#39;t very
hard, and last week I wrote a script to replicate the steps done by
the Debian Edu installer.&lt;/p&gt;

&lt;p&gt;The script,
&lt;a href=&quot;http://anonscm.debian.org/viewvc/debian-edu/branches/wheezy/debian-edu-config/share/debian-edu-config/tools/debian-edu-bless?view=markup&quot;&gt;debian-edu-bless&lt;a/&gt;
in the debian-edu-config package, will go through these six steps and
transform an existing Debian Wheezy or Ubuntu (untested) installation
into a Debian Edu Workstation:&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;Add skolelinux related APT sources.&lt;/li&gt;
&lt;li&gt;Create /etc/debian-edu/config with the wanted configuration.&lt;/li&gt;
&lt;li&gt;Install debian-edu-install to load preseeding values and pull in
    our configuration.&lt;/li&gt;
&lt;li&gt;Preseed debconf database with profile setup in
    /etc/debian-edu/config, and run tasksel to install packages
    according to the profile specified in the config above,
    overriding some of the Debian automation machinery.&lt;/li&gt;
&lt;li&gt;Run debian-edu-cfengine-D installation to configure everything
    that could not be done using preseeding.&lt;/li&gt;
&lt;li&gt;Ask for a reboot to enable all the configuration changes.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;There are some steps in the Debian Edu installation that can not be
replicated like this.  Disk partitioning and LVM setup, for example.
So this script just assume there is enough disk space to install all
the needed packages.&lt;/p&gt;

&lt;p&gt;The script was created to help a Debian Edu student working on
setting up &lt;a href=&quot;http://www.raspberrypi.org&quot;&gt;Raspberry Pi&lt;/a&gt; as a
Debian Edu client, and using it he can take the existing
&lt;a href=&quot;http://www.raspbian.org/FrontPage‎&quot;&gt;Raspbian&lt;/a&gt; installation and
transform it into a fully functioning Debian Edu Workstation (or
Roaming Workstation, or whatever :).&lt;/p&gt;

&lt;p&gt;The default setting in the script is to create a KDE Workstation.
If a LXDE based Roaming workstation is wanted instead, modify the
PROFILE and DESKTOP values at the top to look like this instead:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
PROFILE=&quot;Roaming-Workstation&quot;
DESKTOP=&quot;lxde&quot;
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The script could even become useful to set up Debian Edu servers in
the cloud, by starting with a virtual Debian installation at some
virtual hosting service and setting up all the services on first
boot.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Second alpha release of Debian Edu / Skolelinux based on Debian Wheezy</title>
                <link>http://people.skolelinux.org/pere/blog/Second_alpha_release_of_Debian_Edu___Skolelinux_based_on_Debian_Wheezy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Second_alpha_release_of_Debian_Edu___Skolelinux_based_on_Debian_Wheezy.html</guid>
                <pubDate>Tue, 14 May 2013 23:30:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux
project&lt;/a&gt; is making great progress and made its second Wheezy based
release today.  This is the release announcement:&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;New features for Debian Edu 7.0.0 alpha1 released
2013-05-14&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;This is the release notes for for Debian Edu / Skolelinux 7.0.0 edu
alpha1, based on &lt;a href=&quot;http://www.debian.org&quot;&gt;Debian&lt;/a&gt; with
codename &quot;Wheezy&quot;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;About Debian Edu and Skolelinux&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Debian Edu, also known as Skolelinux, is a Linux distribution based
on Debian providing an out-of-the box environment of a completely
configured school network. Immediatly after installation a school
server running all services needed for a school network is set up just
waiting for users and machines being added via GOsa², a comfortable
Web-UI. A netbooting environment is prepared using PXE, so after
initial installation of the main server from CD, DVD or USB stick all
other machines can be installed via the network.&lt;/p&gt;

&lt;p&gt;This is the first test release based on Wheezy (which currently is
not released yet). Basically this is an updated and slightly improved
version compared to the Squeeze release.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Software updates&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
  &lt;li&gt;Install freemind (0.9.0) by default, and stop installing vym by
    default.&lt;/li&gt;
  &lt;li&gt;Install chromium (26.0.1410.43) by default.&lt;/li&gt;
  &lt;li&gt;Install goplay (0.5-1.1) to make golearn available by default.&lt;/li&gt;
  &lt;li&gt;Updated support for Japanese input methods, now based on
    ibus-anthy.&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Other changes&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;

  &lt;li&gt;Switched default file system from ext3 to ext4 for speed and
    reliability improvements.&lt;/li&gt;
  &lt;li&gt;Got rid of unwanted winbind daemon and PAM setup activated because
    of &lt;a href=&quot;http://bugs.debian.org/706434&quot;&gt;706434&lt;/a&gt;.&lt;/li&gt;
  &lt;li&gt;Extended and improved the testsuite tests to detect more possible
    problems.&lt;/li&gt;
  &lt;li&gt;Corrected proxy handling to not set http_proxy to a bogus
    direct:// URL.&lt;/li&gt;
  &lt;li&gt;Corrected proxy setup for diskless workstations.&lt;/li&gt;
  &lt;li&gt;Corrected PXE setup to use our updated udebs during installation.&lt;/li&gt;
  &lt;li&gt;Made installation handling of low entropy level more robust.&lt;/li&gt;
  &lt;li&gt;Create larger partitions for Roaming workstations and Thin client
    servers, to make room for all the software installed.&lt;/li&gt;
  &lt;li&gt;Fix bug in Roaming workstation PAM setup, making it impossible to
    log in (&lt;a href=&quot;http://bugs.debian.org/706753&quot;&gt;706753&lt;/a&gt;).&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Known issues&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;

  &lt;li&gt;IP resolution for the local hostname give useless IPv6 address
    (&lt;a href=&quot;http://bugs.debian.org/705900&quot;&gt;705900&lt;/a&gt;).  Only install
    libnss-myhostname on roaming workstations until it is fixed.&lt;/li&gt;
  &lt;li&gt;DVD images are not yet ready.&lt;/li&gt;
  &lt;li&gt;No mass import of user account data in GOsa (ldif or csv)
    available yet (&lt;a href=&quot;http://bugs.debian.org/698840&quot;&gt;698840&lt;/a&gt;).&lt;/li&gt;
  &lt;li&gt;Missing artwork for the KDE desktop (and probably a few others).&lt;/li&gt;
  &lt;li&gt;KDE Debian submenu lacks icons.&lt;/li&gt;
  &lt;li&gt;LXDE menu lacks entry for changing GOsa password
    (website). Installing gosa-desktop will be an option.&lt;/li&gt;
  &lt;li&gt;Backup configuration via web interface is impossible due to
    password submission problem
    (&lt;a href=&quot;http://bugs.debian.org/700257&quot;&gt;700257&lt;/a&gt;).&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Where to get it&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;To download the multiarch netinstall CD release you can use&lt;/p&gt;
&lt;ul&gt;

  &lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu~7.0+edu0~a1-CD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu~7.0+edu0~a1-CD.iso&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu~7.0+edu0~a1-CD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/debian-edu~7.0+edu0~a1-CD.iso&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/debian-edu~7.0+edu0~a1-CD.iso debian-edu~7.0+edu0~a1-CD.iso&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;The MD5SUM of this image is: 685ed76c1aa8e44b12d3fde21faf450b&lt;/p&gt;

&lt;p&gt;The SHA1SUM of this image is: 6c874de157024da13e115bab29c068080a11ec4c&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How to report bugs&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&quot;&gt;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&lt;/a&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian, the Linux distribution of choice for LEGO designers?</title>
                <link>http://people.skolelinux.org/pere/blog/Debian__the_Linux_distribution_of_choice_for_LEGO_designers_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian__the_Linux_distribution_of_choice_for_LEGO_designers_.html</guid>
                <pubDate>Sat, 11 May 2013 20:30:00 +0200</pubDate>
                <description>&lt;P&gt;In January,
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/New_IRC_channel_for_LEGO_designers_using_Debian.html&quot;&gt;I
announced a&lt;/a&gt; new &lt;a href=&quot;irc://irc.debian.org/%23debian-lego&quot;&gt;IRC
channel #debian-lego&lt;/a&gt;, for those of us in the Debian and Linux
community interested in &lt;a href=&quot;http://www.lego.com/&quot;&gt;LEGO&lt;/a&gt;, the
marvellous construction system from Denmark.  We also created
&lt;a href=&quot;http://wiki.debian.org/LegoDesigners&quot;&gt;a wiki page&lt;/a&gt; to have
a place to take notes and write down our plans and hopes.  And several
people showed up to help.  I was very happy to see the effect of my
call.  Since the small start, we have a debtags tag
&lt;a href=&quot;http://debtags.debian.net/search/bytag?wl=hardware::hobby:lego&quot;&gt;hardware::hobby:lego&lt;/a&gt;
tag for LEGO related packages, and now count 10 packages related to
LEGO and &lt;a href=&quot;http://mindstorms.lego.com/&quot;&gt;Mindstorms&lt;/a&gt;:&lt;/p&gt;

&lt;p&gt;&lt;table&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/brickos&quot;&gt;brickos&lt;/a&gt;&lt;/td&gt;&lt;td&gt;alternative OS for LEGO Mindstorms RCX. Supports development in C/C++&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/leocad&quot;&gt;leocad&lt;/a&gt;&lt;/td&gt;&lt;td&gt;virtual brick CAD software&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/libnxt&quot;&gt;libnxt&lt;/a&gt;&lt;/td&gt;&lt;td&gt;utility library for talking to the LEGO Mindstorms NX&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/lnpd&quot;&gt;lnpd&lt;/a&gt;&lt;/td&gt;&lt;td&gt;daemon for LNP communication with BrickOS&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/nbc&quot;&gt;nbc&lt;/a&gt;&lt;/td&gt;&lt;td&gt;compiler for LEGO Mindstorms NXT bricks&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/nqc&quot;&gt;nqc&lt;/a&gt;&lt;/td&gt;&lt;td&gt;Not Quite C compiler for LEGO Mindstorms RCX&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/python-nxt&quot;&gt;python-nxt&lt;/a&gt;&lt;/td&gt;&lt;td&gt;python driver/interface/wrapper for the Lego Mindstorms NXT robot&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/python-nxt-filer&quot;&gt;python-nxt-filer&lt;/a&gt;&lt;/td&gt;&lt;td&gt;simple GUI to manage files on a LEGO Mindstorms NXT&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/scratch&quot;&gt;scratch&lt;/a&gt;&lt;/td&gt;&lt;td&gt;easy to use programming environment for ages 8 and up&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;&lt;a href=&quot;http://packages.qa.debian.org/t2n&quot;&gt;t2n&lt;/a&gt;&lt;/td&gt;&lt;td&gt;simple command-line tool for Lego NXT&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;&lt;/p&gt;

&lt;p&gt;Some of these are available in Wheezy, and all but one are
currently available in Jessie/testing.  leocad is so far only
available in experimental.&lt;/p&gt;

&lt;p&gt;If you care about LEGO in Debian, please join us on IRC and help
adding the rest of the great free software tools available on Linux
for LEGO designers.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Wheezy is out - and Debian Edu / Skolelinux should soon follow! #newinwheezy</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Wheezy_is_out___and_Debian_Edu___Skolelinux_should_soon_follow___newinwheezy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Wheezy_is_out___and_Debian_Edu___Skolelinux_should_soon_follow___newinwheezy.html</guid>
                <pubDate>Sun, 5 May 2013 07:40:00 +0200</pubDate>
                <description>&lt;p&gt;When I woke up this morning, I was very happy to see that the
&lt;a href=&quot;http://www.debian.org/News/2013/20130504&quot;&gt;release announcement
for Debian Wheezy&lt;/a&gt; was waiting in my mail box.  This is a great
Debian release, and I expect to move my machines at home over to it fairly
soon.&lt;/p&gt;

&lt;p&gt;The new debian release contain heaps of new stuff, and one program
in particular make me very happy to see included.  The
&lt;a href=&quot;http://scratch.mit.edu/&quot;&gt;Scratch&lt;/a&gt; program, made famous by
the &lt;a href=&quot;http://www.code.org/&quot;&gt;Teach kids code&lt;/a&gt; movement, is
included for the first time.  Alongside similar programs like
&lt;a href=&quot;http://edu.kde.org/kturtle/&quot;&gt;kturtle&lt;/a&gt; and
&lt;a href=&quot;http://wiki.sugarlabs.org/go/Activities/Turtle_Art&quot;&gt;turtleart&lt;/a&gt;,
it allow for visual programming where syntax errors can not happen,
and a friendly programming environment for learning to control the
computer.  Scratch will also be included in the next release of Debian
Edu.&lt;/a&gt;

&lt;p&gt;And now that Wheezy is wrapped up, we can wrap up the next Debian
Edu/Skolelinux release too.  The
&lt;a href=&quot;http://lists.debian.org/debian-edu/2013/04/msg00132.html&quot;&gt;first
alpha release&lt;/a&gt; went out last week, and the next should soon
follow.&lt;p&gt;
</description>
        </item>
        
        <item>
                <title>First alpha release of Debian Edu / Skolelinux based on Debian Wheezy</title>
                <link>http://people.skolelinux.org/pere/blog/First_alpha_release_of_Debian_Edu___Skolelinux_based_on_Debian_Wheezy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_alpha_release_of_Debian_Edu___Skolelinux_based_on_Debian_Wheezy.html</guid>
                <pubDate>Fri, 26 Apr 2013 08:30:00 +0200</pubDate>
                <description>&lt;p&gt;The Debian Edu / Skolelinux project is still going strong and made
its first Wheezy based release today.  This is the release
announcement:&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;New features for Debian Edu ~7.0.0 alpha0 released
2013-04-26&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;This is the release notes for for Debian Edu / Skolelinux ~7.0.0
edu alpha0, based on Debian with codename &quot;Wheezy&quot;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;About Debian Edu and Skolelinux&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu, also known as
Skolelinux&lt;/a&gt;, is a Linux distribution based on Debian providing an
out-of-the box environment of a completely configured school
network. Immediatly after installation a school server running all
services needed for a school network is set up just waiting for users
and machines being added via GOsa², a comfortable Web-UI. A netbooting
environment is prepared using PXE, so after initial installation of
the main server from CD, DVD or USB stick all other machines can be
installed via the network.&lt;/p&gt;

&lt;p&gt;This is the first test release based on Wheezy (which currently is
not released yet). Basically this is an updated and slightly improved
version compared to the Squeeze release.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Software updates&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Everything which is new in Debian Wheezy, eg:
  &lt;ul&gt;
     &lt;li&gt;Linux kernel 3.2.x&lt;/li&gt;
     &lt;li&gt;Desktop environments KDE &quot;Plasma&quot; 4.8.4, GNOME 3.4, and LXDE 4
         (KDE is installed by default; to choose GNOME or LXDE: see
         manual.)&lt;/li&gt;
     &lt;li&gt;Web browser Iceweasel 10 ESR&lt;/li&gt;
     &lt;li&gt;LibreOffice 3.5.4&lt;/li&gt;
     &lt;li&gt;LTSP 5.4.2&lt;/li&gt;
     &lt;li&gt;GOsa 2.7.4&lt;/li&gt;
     &lt;li&gt;CUPS print system 1.5.3&lt;/li&gt;
     &lt;li&gt;Educational toolbox GCompris 12.01&lt;/li&gt;
     &lt;li&gt;Music creator Rosegarden 12.04&lt;/li&gt;
     &lt;li&gt;Image editor Gimp 2.8.2&lt;/li&gt;
     &lt;li&gt;Virtual universe Celestia 1.6.1&lt;/li&gt;
     &lt;li&gt;Virtual stargazer Stellarium 0.11.3&lt;/li&gt;
     &lt;li&gt;Scratch visual programming environment 1.4.0.6&lt;/li&gt;
     &lt;li&gt;New version of debian-installer from Debian Wheezy, see
         &lt;a href=&quot;http://www.debian.org/releases/wheezy/installmanual&quot;&gt;installation
         manual&lt;/a&gt; for more details.&lt;/li&gt;
     &lt;li&gt;Debian Wheezy includes about 37000 packages available for
         installation.&lt;/li&gt;
     &lt;li&gt;More information about Debian Wheezy 7.0 is provided in the
         &lt;a href=&quot;http://www.debian.org/releases/wheezy/releasenotes&quot;&gt;release notes&lt;/a&gt; and the &lt;a href=&quot;http://www.debian.org/releases/wheezy/installmanual&quot;&gt;installation manual&lt;/a&gt;.&lt;/li&gt;
  &lt;/ul&gt;&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;&lt;strong&gt;Documentation&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;The (&lt;a href=&quot;http://wiki.debian.org/DebianEdu/Documentation/Wheezy&quot;&gt;English&lt;/a&gt;) Debian Edu Wheezy Manual is fully translated to
    German, French, Italian and Danish. Partly translated versions exist
    for Norwegian Bokmal and Spanish.&lt;/li&gt;
&lt;/ul&gt;
  
&lt;p&gt;&lt;Strong&gt;LDAP related changes&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Slight changes to some objects and acls to have more types to
    choose from when adding systems in GOsa. Now systems can be of type
    server, workstation, printer, terminal or netdevice.&lt;/li&gt;
&lt;/ul&gt;
    
&lt;p&gt;&lt;strong&gt;Other changes&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;LTSP clients start as diskless workstation / thin client can be
    configured via command line argument -- or individually adding an
    entry in lts.conf or LDAP.&lt;li&gt;
&lt;li&gt;GOsa gui: Now some options that seemed to be available, but are non
    functional, are greyed out (or are not clickable). Some tabs are
    completely hidden to the end user, others even to the GOsa admin.&lt;/li&gt;
&lt;/ul&gt;
    
&lt;p&gt;&lt;strong&gt;Regressions&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;No mass import of user account data in GOsa (ldif or csv) available
    yet.&lt;/li&gt;
&lt;/ul&gt;
    
&lt;p&gt;&lt;strong&gt;No updated artwork&lt;/strong&gt;&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Updated artwork which is visible during installation, in the login
    screen and as desktop wallpaper is still missing or the same as we
    had for our Squeeze based release.&lt;/li&gt;
&lt;/ul&gt;
    
&lt;p&gt;&lt;strong&gt;Where to get it&lt;/strong&gt;&lt;/p&gt;

To download the multiarch netinstall CD release you can use
&lt;ul&gt;
&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/wheezy/&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/wheezy/&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/wheezy/&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/wheezy/&lt;/li&gt;
&lt;/ul&gt;
  
&lt;p&gt;The MD5SUM of this image is: c5e773ddafdaa4f48c409c682f598b6c&lt;/p&gt;
  
&lt;p&gt;The SHA1SUM of this image is: 25934fabb9b7d20235499a0a51f08ce6c54215f2&lt;/p&gt;
  
&lt;p&gt;&lt;strong&gt;How to report bugs&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&quot;&gt;http://wiki.debian.org/DebianEdu/HowTo/ReportBugs&lt;/a&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First Debian Edu / Skolelinux developer gathering in 2013 take place in Trondheim</title>
                <link>http://people.skolelinux.org/pere/blog/First_Debian_Edu___Skolelinux_developer_gathering_in_2013_take_place_in_Trondheim.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_Debian_Edu___Skolelinux_developer_gathering_in_2013_take_place_in_Trondheim.html</guid>
                <pubDate>Tue, 16 Apr 2013 15:00:00 +0200</pubDate>
                <description>&lt;p&gt;This years first &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux /
Debian Edu&lt;/a&gt; developer gathering take place the coming weekend in Trondheim.
Details about the gathering can be found
&lt;a href=&quot;http://www.friprogramvareiskolen.no/Gathering/2013-04-19-21-Trondheim&quot;&gt;on
the FRiSK wiki&lt;/a&gt;.  The dates are 19-21th of April 2013, and online
participation for those unable to make it in person is very welcome,
and I plan to participate online myself as I could not leave Oslo this
weekend.&lt;/p&gt;

&lt;p&gt;The focus of the gathering is to work on the web pages and project
infrastructure, and to continue the work on the Wheezy based Debian
Edu release.&lt;/p&gt;

&lt;p&gt;See you on &lt;a href=&quot;irc://irc.debian.org/%23debian-edu&quot;&gt;IRC, #debian-edu on irc.debian.org,&lt;/a&gt; then?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Isenkram 0.2 finally in the Debian archive</title>
                <link>http://people.skolelinux.org/pere/blog/Isenkram_0_2_finally_in_the_Debian_archive.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Isenkram_0_2_finally_in_the_Debian_archive.html</guid>
                <pubDate>Wed, 3 Apr 2013 23:40:00 +0200</pubDate>
                <description>&lt;p&gt;Today the &lt;a href=&quot;http://packages.qa.debian.org/isenkram&quot;&gt;Isenkram
package&lt;/a&gt; finally made it into the archive, after lingering in NEW
for many months.  I uploaded it to the Debian experimental suite
2013-01-27, and today it was accepted into the archive.&lt;/p&gt;

&lt;p&gt;Isenkram is a system for suggesting to users what packages to
install to work with a pluggable hardware device.  The suggestion pop
up when the device is plugged in.  For example if a Lego Mindstorm NXT
is inserted, it will suggest to install the program needed to program
the NXT controller.  Give it a go, and report bugs and suggestions to
BTS. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Change the font, save the world (and save some money in the process)</title>
                <link>http://people.skolelinux.org/pere/blog/Change_the_font__save_the_world__and_save_some_money_in_the_process_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Change_the_font__save_the_world__and_save_some_money_in_the_process_.html</guid>
                <pubDate>Tue, 26 Mar 2013 15:10:00 +0100</pubDate>
                <description>&lt;p&gt;Would you like to help the environment and save money at the same
time, without much sacrifice?  A small step could be to change the
font you use when printing.&lt;/p&gt;

&lt;p&gt;Three years ago,
&lt;a href=&quot;http://arstechnica.com/business/2010/04/last-year-printer-comparison-website/&quot;&gt;Ars
Technica&lt;/a&gt; reported how the University of Wisconsin-Green Bay
changed their default front from
&lt;a href=&quot;http://en.wikipedia.org/wiki/Arial&quot;&gt;Arial&lt;/a&gt; to
&lt;a href=&quot;http://en.wikipedia.org/wiki/Century_Gothic&quot;&gt;Century
Gothic&lt;/a&gt; to save money.  The Century Gothic font uses 30% less toner
than Arial to print the same text.  In other word, you could cut your
toner costs by 30% (or actually, increase your toner supply life time
by more than 30%), by simply changing the default font used in your
prints.&lt;/p&gt;

&lt;p&gt;But it is not quite obvious how much one will save by switching.
The University of Wisconsin-Green Bay said it used $100,000 per year
on ink and toner cartridges, according to
&lt;a href=&quot;http://www.twincities.com/ci_14833097&quot;&gt;a report from
TwinCities.com&lt;/a&gt;, and expected to save between $5,000 and $10,000
per year by asking staff and students to use a different font.  Not
all PDFs and documents are created internally, and those from external
sources will most likely still use a different font.  Also, the
Century Gothic font is slightly wider than Arial, and thus might use
more sheets of paper to print the same text, so the total saving
depend on the documents printed.&lt;/p&gt;

&lt;p&gt;But it is definitely something to consider, if you want to reduce
the amount of trash, decrease the amount of toner used in the world,
and save some money in the process.&lt;/p&gt;

&lt;p&gt;Update 2013-04-10: If you want to know how much ink/toner could be
saved when switching between fonts, Inkfarm got a
&lt;a href=&quot;http://www.inkfarm.com/What-the-Font&quot;&gt;service to calculate the
difference between font pairs&lt;/a&gt;.  They also
&lt;a href=&quot;http://www.inkfarm.com/Recommended-Ink-Saving-Fonts---&quot;&gt;recommend
which fonts to use&lt;/a&gt; to save ink.  Check it out. :) While updating
this blog post, I also came across a blog post from InkCloners,
&lt;a href=&quot;http://inkcloners.com/blog/ink-cartridges/change-fonts-to-save-ink-costs/&quot;&gt;listing
the fonts they recommend&lt;/a&gt;, with Centory Gothic at the top.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Typesetting a short story using docbook for PDF, HTML and EPUB</title>
                <link>http://people.skolelinux.org/pere/blog/Typesetting_a_short_story_using_docbook_for_PDF__HTML_and_EPUB.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Typesetting_a_short_story_using_docbook_for_PDF__HTML_and_EPUB.html</guid>
                <pubDate>Sun, 24 Mar 2013 17:30:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago, during a discussion in
&lt;a href=&quot;http://www.efn.no/&quot;&gt;EFN&lt;/a&gt; about interesting books to read
about copyright and the data retention directive, a suggestion to read
the 1968 short story Kodémus by
&lt;a href=&quot;http://web2.gyldendal.no/toraage/&quot;&gt;Tore Åge Bringsværd&lt;/a&gt;
came up.  The text was only available in old paper books, and thus not
easily available for current and future generations.  Some of the
people participating in the discussion contacted the author, and
reported back 2013-03-19 that the author was OK with releasing the
short story using a &lt;a href=&quot;http://www.creativecommons.org/&quot;&gt;Creative
Commons&lt;/a&gt; license.  The text was quickly scanned and OCR-ed, and we
were ready to start on the editing and typesetting.&lt;/p&gt;

&lt;p&gt;As I already had some experience formatting text in my project to
provide a Norwegian version of the Free Culture book by Lawrence
Lessig, I chipped in and set up a
&lt;a href=&quot;http://www.docbook.org/&quot;&gt;DocBook&lt;/a&gt; processing framework to
generate PDF, HTML and EPUB version of the short story.  The tools to
transform DocBook to different formats are already in my Linux
distribution of choice, &lt;a href=&quot;http://www.debian.org/&quot;&gt;Debian&lt;/a&gt;, so
all I had to do was to use the
&lt;a href=&quot;http://dblatex.sourceforge.net/&quot;&gt;dblatex&lt;/a&gt;,
&lt;a href=&quot;http://docbook.sourceforge.net/release/xsl/current/epub/README&quot;&gt;dbtoepub&lt;/a&gt;
and &lt;a href=&quot;https://fedorahosted.org/xmlto/&quot;&gt;xmlto&lt;/a&gt; tools to do the
conversion.  After a few days, we decided to replace dblatex with
xsltproc/fop (aka
&lt;a href=&quot;http://wiki.docbook.org/DocBookXslStylesheets&quot;&gt;docbook-xsl&lt;/a&gt;),
to get the copyright information to show up in the PDF and to get a
nicer &amp;lt;variablelist&amp;gt; typesetting, but that is just a minor
technical detail.&lt;/p&gt;

&lt;p&gt;There were a few challenges, of course.  We want to typeset the
short story to look like the original, and that require fairly good
control over the layout.  The original short story have three
parts/scenes separated by a single horizontally centred star (*), and
the paragraphs do not contain only flowing text, but dialogs and text
that started on a new line in the middle of the paragraph.&lt;/p&gt;

&lt;p&gt;I initially solved the first challenge by using a paragraph with a
single star in it, ie &amp;lt;para&amp;gt;*&amp;lt;/para&amp;gt;, but it made sure a
placeholder indicated where the scene shifted.  This did not look too
good without the centring.  The next approach was to create a new
preprocessor directive &amp;lt;?newscene?&amp;gt;, mapping to &quot;&amp;lt;hr/&amp;gt;&quot;
for HTML and &quot;&amp;lt;fo:block text-align=&quot;center&quot;&amp;gt;&amp;lt;fo:leader
leader-pattern=&quot;rule&quot; rule-thickness=&quot;0.5pt&quot;/&amp;gt;&amp;lt;/fo:block&amp;gt;&quot;
for FO/PDF output (did not try to implement this in dblatex, as we had
switched at this time).  The HTML XSL file looked like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
&amp;lt;?xml version=&#39;1.0&#39;?&amp;gt; 
&amp;lt;xsl:stylesheet xmlns:xsl=&quot;http://www.w3.org/1999/XSL/Transform&quot; version=&#39;1.0&#39;&amp;gt;
  &amp;lt;xsl:template match=&quot;processing-instruction(&#39;newscene&#39;)&quot;&amp;gt;
    &amp;lt;hr/&amp;gt;
  &amp;lt;/xsl:template&amp;gt;
&amp;lt;/xsl:stylesheet&amp;gt; 
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;And the FO/PDF XSL file looked like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
&amp;lt;?xml version=&#39;1.0&#39;?&amp;gt; 
&amp;lt;xsl:stylesheet xmlns:xsl=&quot;http://www.w3.org/1999/XSL/Transform&quot; version=&#39;1.0&#39;&amp;gt;
  &amp;lt;xsl:template match=&quot;processing-instruction(&#39;newscene&#39;)&quot;&amp;gt;
    &amp;lt;fo:block text-align=&quot;center&quot;&amp;gt;
      &amp;lt;fo:leader leader-pattern=&quot;rule&quot; rule-thickness=&quot;0.5pt&quot;/&amp;gt;
    &amp;lt;/fo:block&amp;gt;
  &amp;lt;/xsl:template&amp;gt;
&amp;lt;/xsl:stylesheet&amp;gt; 
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Finally, I came across the &amp;lt;bridgehead&amp;gt; tag, which seem to be
a good fit for the task at hand, and I replaced &amp;lt;?newscene?&amp;gt;
with &amp;lt;bridgehead&amp;gt;*&amp;lt;/bridgehead&amp;gt;.  It isn&#39;t centred, but we
can fix it with some XSL rule if the current visual layout isn&#39;t
enough.&lt;/p&gt;

&lt;p&gt;I did not find a good DocBook compliant way to solve the
linebreak/paragraph challenge, so I ended up creating a new processor
directive &amp;lt;?linebreak?&amp;gt;, mapping to &amp;lt;br/&amp;gt; in HTML, and
&amp;lt;fo:block/&amp;gt; in FO/PDF.  I suspect there are better ways to do
this, and welcome ideas and patches on github.  The HTML XSL file now
look like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
&amp;lt;?xml version=&#39;1.0&#39;?&amp;gt; 
&amp;lt;xsl:stylesheet xmlns:xsl=&quot;http://www.w3.org/1999/XSL/Transform&quot; version=&#39;1.0&#39;&amp;gt;
  &amp;lt;xsl:template match=&quot;processing-instruction(&#39;linebreak)&quot;&amp;gt;
    &amp;lt;br/&amp;gt;
  &amp;lt;/xsl:template&amp;gt;
&amp;lt;/xsl:stylesheet&amp;gt; 
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;And the FO/PDF XSL file looked like this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
&amp;lt;?xml version=&#39;1.0&#39;?&amp;gt; 
&amp;lt;xsl:stylesheet xmlns:xsl=&quot;http://www.w3.org/1999/XSL/Transform&quot; version=&#39;1.0&#39;
  xmlns:fo=&quot;http://www.w3.org/1999/XSL/Format&quot;&amp;gt;
  &amp;lt;xsl:template match=&quot;processing-instruction(&#39;linebreak)&quot;&amp;gt;
    &amp;lt;fo:block/&amp;gt;
  &amp;lt;/xsl:template&amp;gt;
&amp;lt;/xsl:stylesheet&amp;gt; 
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;One unsolved challenge is our wish to expose different ISBN numbers
per publication format, while keeping all of them in some conditional
structure in the DocBook source.  No idea how to do this, so we ended
up listing all the ISBN numbers next to their format in the colophon
page.&lt;/p&gt;

&lt;p&gt;If you want to check out the finished result, check out the
&lt;a href=&quot;https://github.com/sickel/kodemus&quot;&gt;source repository at
github&lt;/a&gt;
(&lt;a href=&quot;https://github.com/EFN/kodemus&quot;&gt;future/new/official
repository&lt;/a&gt;).  We expect it to be ready and announced in a few
days.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Skolelinux 6 got a video review from Pcwizz</title>
                <link>http://people.skolelinux.org/pere/blog/Skolelinux_6_got_a_video_review_from_Pcwizz.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Skolelinux_6_got_a_video_review_from_Pcwizz.html</guid>
                <pubDate>Sun, 17 Mar 2013 10:30:00 +0100</pubDate>
                <description>&lt;p&gt;Via
&lt;a href=&quot;https://twitter.com/pcwizz/status/313044373262716930&quot;&gt;twitter&lt;/a&gt;
I just discovered that &lt;a href=&quot;http://pcwizz.net/&quot;&gt;Pcwizz&lt;/a&gt; have
done a &lt;a href=&quot;http://www.youtube.com/watch?v=wPzTZ61Pcuc&quot;&gt;video
review&lt;/a&gt; on Youtube of &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux
/ Debian Edu&lt;/a&gt; version 6.  He installed the standalone profile and
the video show a walk-through of of the menu content, demonstration of
a few programs and his view of our distribution.&lt;/p&gt;

&lt;p&gt;There is also some really nice quotes (transcribed by me, might
have heard wrong).  While looking thought the Graphics menu:&lt;/p&gt;

&lt;blockquote&gt;
&quot;Basically everything you ever need in a school environment.&quot;
&lt;/blockquote&gt;

&lt;p&gt;And as a general evaluation of the entire distribution:&lt;/p&gt;

&lt;blockquote&gt;
&quot;So, yeah, a bit bloated.  It kept all the Debian stuff in there, just
to keep it nice and GNU.  So, I do not want to go on about it, but
lets give it 7 out of 10.  I am not going to use it.  That is because
I am not deploying a school network.  There may be some mythical
feature to help you deploy Skolelinux on a school network.&quot;
&lt;/blockquote&gt;

&lt;p&gt;To bad he did not test the server profile, and discovered the PXE
installation option.  It make it possible to install only the main
server from CD, and the rest of the machines via the net, and might be
considered the mythical feature he talk about. :)&lt;/p&gt;

&lt;p&gt;While looking through the menus, there is also this funny comment
about the part of the K menu generated from the Debian menu subsystem:

&lt;blockquote&gt;
&quot;[The K menu] have a special Debian section for software that no-one
is going to look at, because it contain lots of junky stuff that you
actually don&#39;t need in the education distribution, but have just been
included because it isn&#39;t stripped out for some reason.&quot;
&lt;/blockquote&gt;

&lt;p&gt;I guess it is yet another argument for merging the Debian menu and
Gnome/KDE desktop menu entries into
&lt;a href=&quot;http://wiki.debian.org/Proposals/DebianMenuUsingDesktopEntries&quot;&gt;one
consistent menu system&lt;/a&gt; instead of two incomplete and partly
inconsistent menu systems.&lt;/p&gt;

&lt;p&gt;The entire video is available below for those accepting iframe
embedding:&lt;/p&gt;

&lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;http://www.youtube.com/embed/wPzTZ61Pcuc&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;
</description>
        </item>
        
        <item>
                <title>First Skolelinux / Debian Edu Squeeze update released</title>
                <link>http://people.skolelinux.org/pere/blog/First_Skolelinux___Debian_Edu_Squeeze_update_released.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_Skolelinux___Debian_Edu_Squeeze_update_released.html</guid>
                <pubDate>Fri, 8 Mar 2013 09:30:00 +0100</pubDate>
                <description>&lt;p&gt;Last Sunday, 2013-03-03,, Holger Levsen announced the first update
of &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux / Debian Edu&lt;/a&gt;
based on Debian Squeeze.  This is the first update since
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2012/03/msg00001.html&quot;&gt;the
initial release 2012-03-11&lt;/a&gt;.  This is the
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2013/03/msg00000.html&quot;&gt;release
announcement email from Holger&lt;/a&gt;:&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;it&#39;s my pleasure to announce the immediate availability of Debian
Edu 6.0.7+r1 (&quot;Debian Edu Squeeze&quot;).&lt;/p&gt;

&lt;p&gt;Debian Edu 6.0.7+r1 is an incremental update to Debian Edu
6.0.4+r0, containing all the changes between Debian 6.0.4 and 6.0.7 as
well Debian Edu specific bugfixes and enhancements. See below (in this
mail) for the full list of (edu) changes.  Please see
&lt;a href=&quot;http://www.debian.org/News/2012/20120311&quot;&gt;http://www.debian.org/News/2012/20120311&lt;/a&gt;
for more information on &quot;Debian Edu Squeeze&quot;.&lt;/p&gt;

&lt;p&gt;Images are available for download at
&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;md5sums:
&lt;br&gt;1fe79eb4f0f9ae1c58fc318e26cc1e2e  debian-edu-6.0.7+r1-CD.iso
&lt;br&gt;a6ddd924a8bd9a1b5ca122e8fe1c34ec  debian-edu-6.0.7+r1-DVD.iso
&lt;br&gt;ac6c72cd7925ccec51bfbf58e2a7c69c  debian-edu-6.0.7+r1-source-DVD.iso&lt;/p&gt;

&lt;p&gt;sha1sums:
&lt;br&gt;a4b58233b672a99c7df8dc24fb6de3327654a5c3  debian-edu-6.0.7+r1-CD.iso
&lt;br&gt;9b524915e0ff2aa793f13d93123e5bd2bab2dbaa  debian-edu-6.0.7+r1-DVD.iso
&lt;br&gt;43997614893fc5e9e59ad6ce066b05d07fd836fa  debian-edu-6.0.7+r1-source-DVD.iso&lt;/p&gt;

&lt;p&gt;These images are suitable for amd64+i386.&lt;/p&gt;

&lt;p&gt;Changes for Debian Edu 6.0.7+r1 Codename &quot;Squeeze&quot;, released
2013-03-03:&lt;/p&gt;

&lt;ul&gt;
  &lt;li&gt;sitesummary was updated from 0.1.3 to 0.1.8
  &lt;ul&gt;
        &lt;li&gt;Make Nagios configuration more robust and efficient&lt;/li&gt;
        &lt;li&gt;Comply with 3.X kernel&lt;/li&gt;
  &lt;/ul&gt;&lt;/li&gt;
  &lt;li&gt;debian-edu-doc from 1.4~20120310~6.0.4+r0 to 1.4~20130228~6.0.7+r1
  &lt;ul&gt;
        &lt;li&gt;Minor updates from the wiki&lt;/li&gt;
        &lt;li&gt;Danish translation now complete&lt;/li&gt;
  &lt;/ul&gt;&lt;/li&gt;
  &lt;li&gt;debian-edu-config from 1.453 to 1.455
     &lt;ul&gt;
        &lt;li&gt;Fix /etc/hosts for LTSP diskless workstations. Closes: #699880&lt;/li&gt;
        &lt;li&gt;Make ltsp_local_mount script work for multiple devices.&lt;/li&gt;
        &lt;li&gt;Correct Kerberos user policy: don&#39;t expire password after 2 days.
                Closes: #664596&lt;/li&gt;
        &lt;li&gt;Handle &#39;#&#39; characters in the root or first users password.
                Closes: #664976&lt;/li&gt;
        &lt;li&gt;Fixes for gosa-sync:
           &lt;ul&gt;
                &lt;li&gt;Don&#39;t fail if password contains &quot;&lt;/li&gt;
                &lt;li&gt;Don&#39;t disclose new password string in syslog&lt;/li&gt;
           &lt;/ul&gt;&lt;/li&gt;
        &lt;li&gt;Fixes for gosa-create:
           &lt;ul&gt;
                &lt;li&gt;Invalidate libnss cache before applying changes&lt;/li&gt;
                &lt;li&gt;Multiple failures during mass user import into GOsa²&lt;/li&gt;
                &lt;li&gt;gosa-netgroups plugin: don&#39;t erase entries of attribute type
                         &quot;memberNisNetgroup&quot;. Closes: #687256&lt;/li&gt;
                &lt;li&gt;First user now uses the same Kerberos policy as all other users&lt;/li&gt;
           &lt;/ul&gt;&lt;/li&gt;
        &lt;li&gt;Add Danish web page&lt;/li&gt;
    &lt;/ul&gt;
  &lt;li&gt;debian-edu-install from 1.528 to 1.530
    &lt;ul&gt;
        &lt;li&gt;Improve preseeding support and documentation&lt;/li&gt;
    &lt;/ul&gt;&lt;/li&gt;
&lt;/ul&gt;
        
&lt;p&gt;End-user documentation in English is available at
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/Documentation/Squeeze/&quot;&gt;http://wiki.debian.org/DebianEdu/Documentation/Squeeze/&lt;/a&gt;
- translations to French, Italian, Danish and German are available in
the debian-edu-doc package. (Other languages could use your help!)&lt;/p&gt;

&lt;p&gt;If you want to contribute to Debian Edu, please join our
mailinglist
&lt;a href=&quot;http://lists.debian.org/debian-edu/&quot;&gt;debian-edu@lists.debian.org&lt;/a&gt;!
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;I am very happy to see the fruits of a year of hard work. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Frikanalen - Complete TV station organised using the web</title>
                <link>http://people.skolelinux.org/pere/blog/Frikanalen___Complete_TV_station_organised_using_the_web.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Frikanalen___Complete_TV_station_organised_using_the_web.html</guid>
                <pubDate>Sun, 3 Mar 2013 07:15:00 +0100</pubDate>
                <description>&lt;p&gt;Do you want to set up your own TV station, schedule videos and
broadcast them on the air?  Using free software?  With video on demand
support using
&lt;a href=&quot;http://www.digistan.org/open-standard:definition&quot;&gt;free and
open standards&lt;/a&gt;?  Included a web based video stream as well?  And
administrate it all in your web browser from anywhere in the world?  A
few years now the Norwegian public access TV-channel
&lt;a href=&quot;http://www.frikanalen.no/&quot;&gt;Frikanalen&lt;/a&gt; have been building a
system to do just this.  The source code for the solution is licensed
using the GNU LGPL, and
&lt;a href=&quot;http://github.com/Frikanalen&quot;&gt;available from github&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The idea is simple.  You upload a video file over the web, and
attach meta information to the file.  You select a time slot in the
program schedule, and when the time come it is played on the air and
in the web stream.  It is also made available in a video on demand
solution for anyone to see it also outside its scheduled time.  All
you need to run a TV station - using your web browser.&lt;/p&gt;

&lt;p&gt;There are several parts to this web based solution.  I&#39;ll mention
the three most important ones.  The first part is the database of
videos and the schedule.  This is written in Django and include a REST
API.  The current database is SQLite, but the plan is to migrate it to
PostgreSQL.  At the moment this system can be tested on
&lt;a href=&quot;http://beta.frikanalen.tv/&quot;&gt;beta.frikanalen.tv&lt;/a&gt;.  The
second part is the video playout, taking the schedule information from
the database and providing a video stream to broadcast.  This is done
using &lt;a href=&quot;http://www.casparcg.com/&quot;&gt;CasparCG from SVT&lt;/a&gt; and
&lt;a href=&quot;http://www.mltframework.org/&quot;&gt;Media Lovin&#39; Toolkit&lt;/a&gt;.  Video
signal distribution is handled using
&lt;a href=&quot;http://www.ob-encoder.com/&quot;&gt;Open Broadcast Encoder&lt;/a&gt;.  The
third part is the converter, handling the transformation of uploaded
video files to a format useful for broadcasting, streaming and video
on demand.  It is still very much work in progress, so it is not yet
decided what it will end up using.  Note that the source of the latter
two parts are not yet pushed to github.  The lead author want to clean
them up a bit more first.&lt;/p&gt;

&lt;p&gt;The development is coordinated on the
&lt;a href=&quot;irc://irc.freenode.net/%23frikanalen&quot;&gt;#frikanalen IRC
channel&lt;/a&gt; (irc.freenode.net), and discussed on
&lt;a href=&quot;http://lists.nuug.no/mailman/listinfo/frikanalen&quot;&gt;the
frikanalen mailing list&lt;/a&gt;. The lead developer is Benjamin Bruheim
(phed on IRC).  Anyone is welcome to participate in the
development.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Dr. Richard Stallman, founder of Free Software Foundation, give a talk in Oslo March 1st 2013</title>
                <link>http://people.skolelinux.org/pere/blog/Dr__Richard_Stallman__founder_of_Free_Software_Foundation__give_a_talk_in_Oslo_March_1st_2013.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Dr__Richard_Stallman__founder_of_Free_Software_Foundation__give_a_talk_in_Oslo_March_1st_2013.html</guid>
                <pubDate>Wed, 27 Feb 2013 20:20:00 +0100</pubDate>
                <description>&lt;p&gt;Dr. &lt;a href=&quot;http://www.stallman.org/&quot;&gt;Richard Stallman&lt;/a&gt;,
founder of &lt;a href=&quot;http://www.fsf.org/&quot;&gt;Free Software Foundation&lt;/a&gt;,
is giving &lt;a href=&quot;http://www.nuug.no/aktiviteter/20130301-rms/&quot;&gt;a
talk in Oslo March 1st 2013 17:00 to 19:00&lt;/a&gt;.  The event is public
and organised by &lt;a href=&quot;&quot;&gt;Norwegian Unix Users Group (NUUG)&lt;/a&gt;
(where I am the chair of the board) and
&lt;a href=&quot;http://www.friprog.no/&quot;&gt;The Norwegian Open Source Competence
Center&lt;/a&gt;.  The title of the talk is «The Free Software Movement and
GNU», with this description:

&lt;p&gt;&lt;blockquote&gt;
The Free Software Movement campaigns for computer users&#39; freedom to
cooperate and control their own computing. The Free Software Movement
developed the GNU operating system, typically used together with the
kernel Linux, specifically to make these freedoms possible.
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The meeting is open for everyone.  Due to space limitations, the
doors opens for NUUG members at 16:15, and everyone else at 16:45.  I
am really curious how many will show up.  See
&lt;a href=&quot;http://www.nuug.no/aktiviteter/20130301-rms/&quot;&gt;the event
page&lt;/a&gt; for the location details.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Frikart - Free Garmin maps for European countries based on OpenStreetmap</title>
                <link>http://people.skolelinux.org/pere/blog/Frikart___Free_Garmin_maps_for_European_countries_based_on_OpenStreetmap.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Frikart___Free_Garmin_maps_for_European_countries_based_on_OpenStreetmap.html</guid>
                <pubDate>Fri, 15 Feb 2013 09:30:00 +0100</pubDate>
                <description>&lt;p&gt;If you, like me, want an updated a map for your Garmin GPS, there is
now a great source of free maps available from
&lt;a href=&quot;http://www.frikart.no/garmin/index.html&quot;&gt;Frikart&lt;/a&gt;.  To
download a map, just click on the country you are interested in, and
download the map type you want.  There are 8 different maps available,
using different colours and data selection.  Pick one of Roadmap, Topo
Summer, Topo Winter, Roadmap II, Topo Summer II, Topo Winter II,
&quot;Trails - overlay map&quot; and &quot;Cross country - overlay map&quot; (see the web
page for descriptions).&lt;/p&gt;

&lt;p&gt;The maps are updated weekly, so if you find something wrong in the
map you can just edit the
&lt;a href=&quot;http://www.openstreetmap.org/&quot;&gt;OpenStreetmap&lt;/a&gt; map source
(anyone can contribute) and fetch a fixed map a week later. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>&quot;Electronic&quot; paper invoices - using vCard in a QR code</title>
                <link>http://people.skolelinux.org/pere/blog/_Electronic__paper_invoices___using_vCard_in_a_QR_code.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/_Electronic__paper_invoices___using_vCard_in_a_QR_code.html</guid>
                <pubDate>Tue, 12 Feb 2013 10:30:00 +0100</pubDate>
                <description>&lt;p&gt;Here in Norway, electronic invoices are spreading, and the
&lt;a href=&quot;http://www.anskaffelser.no/e-handel/faktura&quot;&gt;solution promoted
by the Norwegian government&lt;/a&gt; require that invoices are sent through
one of the approved facilitators, and it is not possible to send
electronic invoices without an agreement with one of these
facilitators.  This seem like a needless limitation to be able to
transfer invoice information between buyers and sellers.  My preferred
solution would be to just transfer the invoice information directly
between seller and buyer, for example using SMTP, or some HTTP based
protocol like REST or SOAP.  But this might also be overkill, as the
&quot;electronic&quot; information can be transferred using paper invoices too,
using a simple bar code.  My bar code encoding of choice would be QR
codes, as this encoding can be read by any smart phone out there.  The
content of the code could be anything, but I would go with
&lt;a href=&quot;http://en.wikipedia.org/wiki/VCard&quot;&gt;the vCard format&lt;/a&gt;, as
it too is supported by a lot of computer equipment these days.&lt;/p&gt;

&lt;p&gt;The vCard format support extentions, and the invoice specific
information can be included using such extentions.  For example an
invoice from SLX Debian Labs (picked because we
&lt;a href=&quot;http://www.linuxiskolen.no/slxdebianlabs/donations.html&quot;&gt;ask
for donations to the Debian Edu project&lt;/a&gt; and thus have bank account
information publicly available) for NOK 1000.00 could have these extra
fields:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
X-INVOICE-NUMBER:1
X-INVOICE-AMOUNT:NOK1000.00
X-INVOICE-KID:123412341234
X-INVOICE-MSG:Donation to Debian Edu
X-BANK-ACCOUNT-NUMBER:16040884339
X-BANK-IBAN-NUMBER:NO8516040884339
X-BANK-SWIFT-NUMBER:DNBANOKKXXX
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The X-BANK-ACCOUNT-NUMBER field was proposed in a stackoverflow
answer regarding
&lt;a href=&quot;http://stackoverflow.com/questions/10045664/storing-bank-account-in-vcard-file&quot;&gt;how
to put bank account information into a vCard&lt;/a&gt;.  For payments in
Norway, either X-INVOICE-KID (payment ID) or X-INVOICE-MSG could be
used to pass on information to the seller when paying the invoice.&lt;/p&gt;

&lt;p&gt;The complete vCard could look like this:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
BEGIN:VCARD
VERSION:2.1
ORG:SLX Debian Labs Foundation
ADR;WORK:;;Gunnar Schjelderups vei 29D;OSLO;;0485;Norway
URL;WORK:http://www.linuxiskolen.no/slxdebianlabs/
EMAIL;PREF;INTERNET:sdl-styret@rt.nuug.no
REV:20130212T095000Z
X-INVOICE-NUMBER:1
X-INVOICE-AMOUNT:NOK1000.00
X-INVOICE-MSG:Donation to Debian Edu
X-BANK-ACCOUNT-NUMBER:16040884339
X-BANK-IBAN-NUMBER:NO8516040884339
X-BANK-SWIFT-NUMBER:DNBANOKKXXX
END:VCARD
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The resulting QR code created using
&lt;a href=&quot;http://fukuchi.org/works/qrencode/&quot;&gt;qrencode&lt;/a&gt; would look
like this, and should be readable (and thus checkable) by any smart
phone, or for example the &lt;a href=&quot;http://zbar.sourceforge.net/&quot;&gt;zbar
bar code reader&lt;/a&gt; and feed right into the approval and accounting
system.&lt;/p&gt;

&lt;p&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2013-02-12-qr-invoice.png&quot;&gt;&lt;/p&gt;

&lt;p&gt;The extension fields will most likely not show up in any normal
vCard reader, so those parts would have to go directly into a system
handling invoices.  I am a bit unsure how vCards without name parts
are handled, but a simple test indicate that this work just fine.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-02-12 11:30&lt;/strong&gt;: Added KID to the proposal
based on feedback from Sturle Sunde.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Sleep until morning - home automation for the kids</title>
                <link>http://people.skolelinux.org/pere/blog/Sleep_until_morning___home_automation_for_the_kids.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Sleep_until_morning___home_automation_for_the_kids.html</guid>
                <pubDate>Sun, 10 Feb 2013 12:50:00 +0100</pubDate>
                <description>&lt;p&gt;&lt;img align=&quot;left&quot; style=&quot;margin-right:25px;&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2013-02-10-morning-light.jpeg&quot;&gt;&lt;/p&gt;

&lt;p&gt;With kids in the house, one challenge is getting them to sleep
during the night and wake up when it is morning.  I mean, when I
believe it is morning, and not two hours earlier.  In our household we
have decided that 07:00 is the turning point, but getting the kids to
sleep until 07:00 is a small challenge every day.  They have adapted
quite well, and rarely wake up at 05:00 any more, but some times wake
up at times like 05:50, 06:15, 06:30 or 06:45, and it is hard to put
the awake one to bed again without disturbing and waking the rest.
And I understand perfectly well that they fail to sleep until 07:00
some times, as there is no way for them to know if it is before or
after the magic moment without coming and asking us parents.&lt;/p&gt;

&lt;p&gt;But yesterday I came up with a method to solve this problem.  It
involve home automation.  A few years ago I bought a
&lt;a href=&quot;http://www.telldus.se/products/tellstick&quot;&gt;Tellstick&lt;/a&gt; and RF
switches at the local &lt;a href=&quot;http://www.clasohlson.com/&quot;&gt;Clas
Ohlson&lt;/a&gt; shop, allowing me to control lights and other electrical
gadgets using my Linux server.  When I moved from the old flat to a
small house, I put away all this equipment as most of the lighting in
the house was not using wall sockets and thus not easy to connect to
the gadgets I had.  But recently I bought a
&lt;a href=&quot;http://www.telldus.se/products/tellstick_net&quot;&gt;Tellstick
Net&lt;/a&gt; to be able to read sensor input as well as control power
sockets.  I want to control ovens in the basement to avoid the pipes
to freeze, and monitor the humidity to detect flooding.  The default
setup for Tellstick Net is to be controlled by the vendor web service,
which to me is a security problem, but it is also possible to build
ones own
&lt;a href=&quot;http://developer.telldus.com/blog/2012/03/02/help-us-develop-local-access-using-tellstick-net-build-your-own-firmware&quot;&gt;firmware
with local access&lt;/A&gt; instead of being controlled by a Swedish
company, thanks to the release of the GPL licensed firmware source
code.  I plan to get that running before I let it control anything
important.  But while working on this, one idea to make it easier for
the kids came to me yesterday.  We can set up a night light controlled
by the computer, and turn it automatically on at 07:00.  The kids can
then check the light in the morning to know if they are supposed to
get up or not.  They joined me in setting everything up, and I
repeated the concept several times before bed times to make sure they
remembered to check the light before getting up in the morning.&lt;/p&gt;

&lt;p&gt;We tested it this morning, and all the kids stayed in bed until
after 07:00, and every one of them commented on the fact that the
&quot;morning light&quot; was turned on and signalled that the morning had
arrived.  So this look like a success, and I am excited to see how
this develops the next few days. :) I really hope this can allow us
all to sleep a bit longer in the morning.&lt;/p&gt;

&lt;p&gt;A nice advantage of this setup is that we can remote control when
to tell the kids to get up.  We do not have to wait until 07:00, and
can also delay it if we want to.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Bitcoin GUI now available from Debian/unstable (and Ubuntu/raring)</title>
                <link>http://people.skolelinux.org/pere/blog/Bitcoin_GUI_now_available_from_Debian_unstable__and_Ubuntu_raring_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Bitcoin_GUI_now_available_from_Debian_unstable__and_Ubuntu_raring_.html</guid>
                <pubDate>Sat, 2 Feb 2013 09:00:00 +0100</pubDate>
                <description>&lt;p&gt;My
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/How_to_backport_bitcoin_qt_version_0_7_2_2_to_Debian_Squeeze.html&quot;&gt;last
bitcoin related blog post&lt;/a&gt; mentioned that the new
&lt;a href=&quot;http://packages.qa.debian.org/bitcoin&quot;&gt;bitcoin package&lt;/a&gt; for
Debian was waiting in NEW.  It was accepted by the Debian ftp-masters
2013-01-19, and have been available in unstable since then.  It was
automatically copied to Ubuntu, and is available in their Raring
version too.&lt;/p&gt;

&lt;p&gt;But there is a strange problem with the build that block this new
version from being available on the i386 and kfreebsd-i386
architectures.  For some strange reason, the autobuilders in Debian
for these architectures fail to run the test suite on these
architectures (&lt;a href=&quot;http://bugs.debian.org/672524&quot;&gt;BTS #672524&lt;/a&gt;).
We are so far unable to reproduce it when building it manually, and
no-one have been able to propose a fix.  If you got an idea what is
failing, please let us know via the BTS.&lt;/p&gt;

&lt;p&gt;One feature that is annoying me with of the bitcoin client, because
I often run low on disk space, is the fact that the client will exit
if it run short on space (&lt;a href=&quot;http://bugs.debian.org/696715&quot;&gt;BTS
#696715&lt;/a&gt;).  So make sure you have enough disk space when you run
it. :)&lt;/p&gt;

&lt;p&gt;As usual, if you use bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Welcome to the world, Isenkram!</title>
                <link>http://people.skolelinux.org/pere/blog/Welcome_to_the_world__Isenkram_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Welcome_to_the_world__Isenkram_.html</guid>
                <pubDate>Tue, 22 Jan 2013 22:00:00 +0100</pubDate>
                <description>&lt;p&gt;Yesterday, I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/First_prototype_ready_making_hardware_easier_to_use_in_Debian.html&quot;&gt;asked
for testers&lt;/a&gt; for my prototype for making Debian better at handling
pluggable hardware devices, which I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Lets_make_hardware_dongles_easier_to_use_in_Debian.html&quot;&gt;set
out to create&lt;/a&gt; earlier this month.  Several valuable testers showed
up, and caused me to really want to to open up the development to more
people.  But before I did this, I want to come up with a sensible name
for this project.  Today I finally decided on a new name, and I have
renamed the project from hw-support-handler to this new name.  In the
process, I moved the source to git and made it available as a
&lt;a href=&quot;http://anonscm.debian.org/gitweb/?p=collab-maint/isenkram.git&quot;&gt;collab-maint&lt;/a&gt;
repository in Debian.  The new name?  It is &lt;strong&gt;Isenkram&lt;/strong&gt;.
To fetch and build the latest version of the source, use&lt;/p&gt;

&lt;pre&gt;
git clone http://anonscm.debian.org/git/collab-maint/isenkram.git
cd isenkram &amp;&amp; git-buildpackage -us -uc
&lt;/pre&gt;

&lt;p&gt;I have not yet adjusted all files to use the new name yet.  If you
want to hack on the source or improve the package, please go ahead.
But please talk to me first on IRC or via email before you do major
changes, to make sure we do not step on each others toes. :)&lt;/p&gt;

&lt;p&gt;If you wonder what &#39;isenkram&#39; is, it is a Norwegian word for iron
stuff, typically meaning tools, nails, screws, etc.  Typical hardware
stuff, in other words.  I&#39;ve been told it is the Norwegian variant of
the German word eisenkram, for those that are familiar with that
word.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-01-26&lt;/strong&gt;: Added -us -us to build
instructions, to avoid confusing people with an error from the signing
process.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-01-27&lt;/strong&gt;: Switch to HTTP URL for the git
clone argument to avoid the need for authentication.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First prototype ready making hardware easier to use in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/First_prototype_ready_making_hardware_easier_to_use_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_prototype_ready_making_hardware_easier_to_use_in_Debian.html</guid>
                <pubDate>Mon, 21 Jan 2013 12:00:00 +0100</pubDate>
                <description>&lt;p&gt;Early this month I set out to try to
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Lets_make_hardware_dongles_easier_to_use_in_Debian.html&quot;&gt;improve
the Debian support for pluggable hardware devices&lt;/a&gt;.  Now my
prototype is working, and it is ready for a larger audience.  To test
it, fetch the
&lt;a href=&quot;http://anonscm.debian.org/viewvc/debian-edu/trunk/src/hw-support-handler/&quot;&gt;source
from the Debian Edu subversion repository&lt;/a&gt;, build and install the
package.  You might have to log out and in again activate the
autostart script.&lt;/p&gt;

&lt;p&gt;The design is simple:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Add desktop entry in /usr/share/autostart/ causing a program
hw-support-handlerd to start when the user log in.&lt;/li&gt;

&lt;li&gt;This program listen for kernel events about new hardware (directly
from the kernel like udev does), not using HAL dbus events as I
initially did.&lt;/li&gt;

&lt;li&gt;When new hardware is inserted, look up the hardware modalias in
the APT database, a database
&lt;a href=&quot;http://anonscm.debian.org/viewvc/debian-edu/trunk/src/hw-support-handler/modaliases?view=markup&quot;&gt;available
via HTTP&lt;/a&gt; and a database available as part of the package.&lt;/li&gt;

&lt;li&gt;If a package is mapped to the hardware in question, the package
isn&#39;t installed yet and this is the first time the hardware was
plugged in, show a desktop notification suggesting to install the
package or packages.&lt;/li&gt;

&lt;li&gt;If the user click on the &#39;install package now&#39; button, ask
aptdaemon via the PackageKit API to install the requrired package.&lt;/li&gt;

&lt;li&gt;aptdaemon ask for root password or sudo password, and install the
package while showing progress information in a window.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;I still need to come up with a better name for the system.  Here
are some screen shots showing the prototype in action.  First the
notification, then the password request, and finally the request to
approve all the dependencies.  Sorry for the Norwegian Bokmål GUI.&lt;/p&gt;

&lt;p&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2013-01-21-hw-support-1-notification.png&quot;&gt;
&lt;br&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2013-01-21-hw-support-2-password.png&quot;&gt;
&lt;br&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2013-01-21-hw-support-3-dependencies.png&quot;&gt;
&lt;br&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2013-01-21-hw-support-4-installing.png&quot;&gt;
&lt;br&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2013-01-21-hw-support-5-installing-details.png&quot; width=&quot;70%&quot;&gt;&lt;/p&gt;

&lt;p&gt;The prototype still need to be improved with longer timeouts, but
is already useful.  The database of hardware to package mappings also
need more work.  It is currently compatible with the Ubuntu way of
storing such information in the package control file, but could be
changed to use other formats instead or in addition to the current
method.  I&#39;ve dropped the use of discover for this mapping, as the
modalias approach is more flexible and easier to use on Linux as long
as the Linux kernel expose its modalias strings directly.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-01-21 16:50&lt;/strong&gt;: Due to popular demand,
here is the command required to check out and build the source: Use
&#39;&lt;tt&gt;svn checkout
svn://svn.debian.org/debian-edu/trunk/src/hw-support-handler/; cd
hw-support-handler; debuild&lt;/tt&gt;&#39;.  If you lack debuild, install the
devscripts package.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-01-23 12:00&lt;/strong&gt;: The project is now
renamed to Isenkram and the source moved from the Debian Edu
subversion repository to a Debian collab-maint git repository.  See
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Welcome_to_the_world__Isenkram_.html&quot;&gt;build
instructions&lt;/a&gt; for details.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Thank you Thinkpad X41, for your long and trustworthy service</title>
                <link>http://people.skolelinux.org/pere/blog/Thank_you_Thinkpad_X41__for_your_long_and_trustworthy_service.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Thank_you_Thinkpad_X41__for_your_long_and_trustworthy_service.html</guid>
                <pubDate>Sat, 19 Jan 2013 09:20:00 +0100</pubDate>
                <description>&lt;p&gt;This Christmas my trusty old laptop died.  It died quietly and
suddenly in bed.  With a quiet whimper, it went completely quiet and
black.  The power button was no longer able to turn it on.  It was a
IBM Thinkpad X41, and the best laptop I ever had.  Better than both
Thinkpads X30, X31, X40, X60, X61 and X61S.  Far better than the
Compaq I had before that.  Now I need to find a replacement.  To keep
going during Christmas, I moved the one year old SSD disk to my old
X40 where it fitted (only one I had left that could use it), but it is
not a durable solution.

&lt;p&gt;My laptop needs are fairly modest.  This is my wishlist from when I
got a new one more than 10 years ago.  It still holds true.:)&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Lightweight (around 1 kg) and small volume (preferably smaller
  than A4).&lt;/li&gt;
&lt;li&gt;Robust, it will be in my backpack every day.&lt;/li&gt;
&lt;li&gt;Three button mouse and a mouse pin instead of touch pad.&lt;/li&gt;
&lt;li&gt;Long battery life time.  Preferable a week.&lt;/li&gt;
&lt;li&gt;Internal WIFI network card.&lt;/li&gt;
&lt;li&gt;Internal Twisted Pair network card.&lt;/li&gt;
&lt;li&gt;Some USB slots (2-3 is plenty)&lt;/li&gt;
&lt;li&gt;Good keyboard - similar to the Thinkpad.&lt;/li&gt;
&lt;li&gt;Video resolution at least 1024x768, with size around 12&quot; (A4 paper
size).&lt;/li&gt;
&lt;li&gt;Hardware supported by Debian Stable, ie the default kernel and
  X.org packages.&lt;/li&gt;
&lt;li&gt;Quiet, preferably fan free (or at least not using the fan most of
  the time).

&lt;/ul&gt;

&lt;p&gt;You will notice that there are no RAM and CPU requirements in the
list.  The reason is simply that the specifications on laptops the
last 10-15 years have been sufficient for my needs, and I have to look
at other features to choose my laptop.  But are there still made as
robust laptops as my X41?  The Thinkpad X60/X61 proved to be less
robust, and Thinkpads seem to be heading in the wrong direction since
Lenovo took over.  But I&#39;ve been told that X220 and X1 Carbon might
still be useful.&lt;/p&gt;

&lt;p&gt;Perhaps I should rethink my needs, and look for a pad with an
external keyboard?  I&#39;ll have to check the
&lt;a href=&quot;http://www.linux-laptop.net/&quot;&gt;Linux Laptops site&lt;/a&gt; for
well-supported laptops, or perhaps just buy one preinstalled from one
of the vendors listed on the &lt;a href=&quot;http://linuxpreloaded.com/&quot;&gt;Linux
Pre-loaded site&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to find a browser plugin supporting a given MIME type</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_find_a_browser_plugin_supporting_a_given_MIME_type.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_find_a_browser_plugin_supporting_a_given_MIME_type.html</guid>
                <pubDate>Fri, 18 Jan 2013 10:40:00 +0100</pubDate>
                <description>&lt;p&gt;Some times I try to figure out which Iceweasel browser plugin to
install to get support for a given MIME type.  Thanks to
&lt;a href=&quot;https://wiki.ubuntu.com/MozillaTeam/Plugins&quot;&gt;specifications
done by Ubuntu&lt;/a&gt; and Mozilla, it is possible to do this in Debian.
Unfortunately, not very many packages provide the needed meta
information, Anyway, here is a small script to look up all browser
plugin packages announcing ther MIME support using this specification:&lt;/p&gt;

&lt;pre&gt;
#!/usr/bin/python
import sys
import apt
def pkgs_handling_mimetype(mimetype):
    cache = apt.Cache()
    cache.open(None)
    thepkgs = []
    for pkg in cache:
        version = pkg.candidate
        if version is None:
            version = pkg.installed
        if version is None:
            continue
        record = version.record
        if not record.has_key(&#39;Npp-MimeType&#39;):
            continue
        mime_types = record[&#39;Npp-MimeType&#39;].split(&#39;,&#39;)
        for t in mime_types:
            t = t.rstrip().strip()
            if t == mimetype:
                thepkgs.append(pkg.name)
    return thepkgs
mimetype = &quot;audio/ogg&quot;
if 1 &lt; len(sys.argv):
    mimetype = sys.argv[1]
print &quot;Browser plugin packages supporting %s:&quot; % mimetype
for pkg in pkgs_handling_mimetype(mimetype):
    print &quot;  %s&quot; %pkg
&lt;/pre&gt;

&lt;p&gt;It can be used like this to look up a given MIME type:&lt;/p&gt;

&lt;pre&gt;
% ./apt-find-browserplug-for-mimetype 
Browser plugin packages supporting audio/ogg:
  gecko-mediaplayer
% ./apt-find-browserplug-for-mimetype application/x-shockwave-flash
Browser plugin packages supporting application/x-shockwave-flash:
  browser-plugin-gnash
%
&lt;/pre&gt;

&lt;p&gt;In Ubuntu this mechanism is combined with support in the browser
itself to query for plugins and propose to install the needed
packages.  It would be great if Debian supported such feature too.  Is
anyone working on adding it?&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-01-18 14:20&lt;/strong&gt;: The Debian BTS
request for icweasel support for this feature is
&lt;a href=&quot;http://bugs.debian.org/484010&quot;&gt;#484010&lt;/a&gt; from 2008 (and
&lt;a href=&quot;http://bugs.debian.org/698426&quot;&gt;#698426&lt;/a&gt; from today).  Lack
of manpower and wish for a different design is the reason thus feature
is not yet in iceweasel from Debian.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>What is the most supported MIME type in Debian?</title>
                <link>http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html</guid>
                <pubDate>Wed, 16 Jan 2013 10:10:00 +0100</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://wiki.debian.org/AppStreamDebianProposal&quot;&gt;DEP-11
proposal to add AppStream information to the Debian archive&lt;/a&gt;, is a
proposal to make it possible for a Desktop application to propose to
the user some package to install to gain support for a given MIME
type, font, library etc. that is currently missing.  With such
mechanism in place, it would be possible for the desktop to
automatically propose and install leocad if some LDraw file is
downloaded by the browser.&lt;/p&gt;

&lt;p&gt;To get some idea about the current content of the archive, I decided
to write a simple program to extract all .desktop files from the
Debian archive and look up the claimed MIME support there.  The result
can be found on the
&lt;a href=&quot;http://ftp.skolelinux.org/pub/AppStreamTest&quot;&gt;Skolelinux FTP
site&lt;/a&gt;.  Using the collected information, it become possible to
answer the question in the title.  Here are the 20 most supported MIME
types in Debian stable (Squeeze), testing (Wheezy) and unstable (Sid).
The complete list is available from the link above.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Debian Stable:&lt;/strong&gt;&lt;/p&gt;

&lt;pre&gt;
  count MIME type
  ----- -----------------------
     32 text/plain
     30 audio/mpeg
     29 image/png
     28 image/jpeg
     27 application/ogg
     26 audio/x-mp3
     25 image/tiff
     25 image/gif
     22 image/bmp
     22 audio/x-wav
     20 audio/x-flac
     19 audio/x-mpegurl
     18 video/x-ms-asf
     18 audio/x-musepack
     18 audio/x-mpeg
     18 application/x-ogg
     17 video/mpeg
     17 audio/x-scpls
     17 audio/ogg
     16 video/x-ms-wmv
&lt;/pre&gt;

&lt;p&gt;&lt;strong&gt;Debian Testing:&lt;/strong&gt;&lt;/p&gt;

&lt;pre&gt;
  count MIME type
  ----- -----------------------
     33 text/plain
     32 image/png
     32 image/jpeg
     29 audio/mpeg
     27 image/gif
     26 image/tiff
     26 application/ogg
     25 audio/x-mp3
     22 image/bmp
     21 audio/x-wav
     19 audio/x-mpegurl
     19 audio/x-mpeg
     18 video/mpeg
     18 audio/x-scpls
     18 audio/x-flac
     18 application/x-ogg
     17 video/x-ms-asf
     17 text/html
     17 audio/x-musepack
     16 image/x-xbitmap
&lt;/pre&gt;

&lt;p&gt;&lt;strong&gt;Debian Unstable:&lt;/strong&gt;&lt;/p&gt;

&lt;pre&gt;
  count MIME type
  ----- -----------------------
     31 text/plain
     31 image/png
     31 image/jpeg
     29 audio/mpeg
     28 application/ogg
     27 image/gif
     26 image/tiff
     26 audio/x-mp3
     23 audio/x-wav
     22 image/bmp
     21 audio/x-flac
     20 audio/x-mpegurl
     19 audio/x-mpeg
     18 video/x-ms-asf
     18 video/mpeg
     18 audio/x-scpls
     18 application/x-ogg
     17 audio/x-musepack
     16 video/x-ms-wmv
     16 video/x-msvideo
&lt;/pre&gt;

&lt;p&gt;I am told that PackageKit can provide an API to access the kind of
information mentioned in DEP-11.  I have not yet had time to look at
it, but hope the PackageKit people in Debian are on top of these
issues.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-01-16 13:35&lt;/strong&gt;: Updated numbers after
discovering a typo in my script.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Using modalias info to find packages handling my hardware</title>
                <link>http://people.skolelinux.org/pere/blog/Using_modalias_info_to_find_packages_handling_my_hardware.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_modalias_info_to_find_packages_handling_my_hardware.html</guid>
                <pubDate>Tue, 15 Jan 2013 08:00:00 +0100</pubDate>
                <description>&lt;p&gt;Yesterday, I wrote about the
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Modalias_strings___a_practical_way_to_map__stuff__to_hardware.html&quot;&gt;modalias
values provided by the Linux kernel&lt;/a&gt; following my hope for
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Lets_make_hardware_dongles_easier_to_use_in_Debian.html&quot;&gt;better
dongle support in Debian&lt;/a&gt;.  Using this knowledge, I have tested how
modalias values attached to package names can be used to map packages
to hardware.  This allow the system to look up and suggest relevant
packages when I plug in some new hardware into my machine, and replace
discover and discover-data as the database used to map hardware to
packages.&lt;/p&gt;

&lt;p&gt;I create a modaliases file with entries like the following,
containing package name, kernel module name (if relevant, otherwise
the package name) and globs matching the relevant hardware
modalias.&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
Package: package-name
&lt;br&gt;Modaliases: module(modaliasglob, modaliasglob, modaliasglob)&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;It is fairly trivial to write code to find the relevant packages
for a given modalias value using this file.&lt;/p&gt;

&lt;p&gt;An entry like this would suggest the video and picture application
cheese for many USB web cameras (interface bus class 0E01):&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
Package: cheese
&lt;br&gt;Modaliases: cheese(usb:v*p*d*dc*dsc*dp*ic0Eisc01ip*)&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;An entry like this would suggest the pcmciautils package when a
CardBus bridge (bus class 0607) PCI device is present:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
Package: pcmciautils
&lt;br&gt;Modaliases: pcmciautils(pci:v*d*sv*sd*bc06sc07i*)
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;An entry like this would suggest the package colorhug-client when
plugging in a ColorHug with USB IDs 04D8:F8DA:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
Package: colorhug-client
&lt;br&gt;Modaliases: colorhug-client(usb:v04D8pF8DAd*)&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I believe the format is compatible with the format of the Packages
file in the Debian archive.  Ubuntu already uses their Packages file
to store their mappings from packages to hardware.&lt;/p&gt;

&lt;p&gt;By adding a XB-Modaliases: header in debian/control, any .deb can
announce the hardware it support in a way my prototype understand.
This allow those publishing packages in an APT source outside the
Debian archive as well as those backporting packages to make sure the
hardware mapping are included in the package meta information.  I&#39;ve
tested such header in the pymissile package, and its modalias mapping
is working as it should with my prototype.  It even made it to Ubuntu
Raring.&lt;/p&gt;

&lt;p&gt;To test if it was possible to look up supported hardware using only
the shell tools available in the Debian installer, I wrote a shell
implementation of the lookup code.  The idea is to create files for
each modalias and let the shell do the matching.  Please check out and
try the
&lt;a href=&quot;http://anonscm.debian.org/viewvc/debian-edu/trunk/src/hw-support-handler/hw-support-lookup?view=co&quot;&gt;hw-support-lookup&lt;/a&gt;
shell script.  It run without any extra dependencies and fetch the
hardware mappings from the Debian archive and the subversion
repository where I currently work on my prototype.&lt;/p&gt;

&lt;p&gt;When I use it on a machine with a yubikey inserted, it suggest to
install yubikey-personalization:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
% ./hw-support-lookup
&lt;br&gt;yubikey-personalization
&lt;br&gt;%
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;When I run it on my Thinkpad X40 with a PCMCIA/CardBus slot, it
propose to install the pcmciautils package:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
% ./hw-support-lookup 
&lt;br&gt;pcmciautils
&lt;br&gt;%
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;If you know of any hardware-package mapping that should be added to
&lt;a href=&quot;http://anonscm.debian.org/viewvc/debian-edu/trunk/src/hw-support-handler/modaliases?view=co&quot;&gt;my
database&lt;/a&gt;, please tell me about it.&lt;/p&gt;

&lt;p&gt;It could be possible to generate several of the mappings between
packages and hardware.  One source would be to look at packages with
kernel modules, ie packages with *.ko files in /lib/modules/, and
extract their modalias information.  Another would be to look at
packages with udev rules, ie packages with files in
/lib/udev/rules.d/, and extract their vendor/model information to
generate a modalias matching rule.  I have not tested any of these to
see if it work.&lt;/p&gt;

&lt;p&gt;If you want to help implementing a system to let us propose what
packages to install when new hardware is plugged into a Debian
machine, please send me an email or talk to me on
&lt;a href=&quot;irc://irc.debian.org/%23debian-devel&quot;&gt;#debian-devel&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Modalias strings - a practical way to map &quot;stuff&quot; to hardware</title>
                <link>http://people.skolelinux.org/pere/blog/Modalias_strings___a_practical_way_to_map__stuff__to_hardware.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Modalias_strings___a_practical_way_to_map__stuff__to_hardware.html</guid>
                <pubDate>Mon, 14 Jan 2013 11:20:00 +0100</pubDate>
                <description>&lt;p&gt;While looking into how to look up Debian packages based on hardware
information, to find the packages that support a given piece of
hardware, I refreshed my memory regarding modalias values, and decided
to document the details.  Here are my findings so far, also available
in
&lt;a href=&quot;http://anonscm.debian.org/viewvc/debian-edu/trunk/src/hw-support-handler/&quot;&gt;the
Debian Edu subversion repository&lt;/a&gt;:

&lt;p&gt;&lt;strong&gt;Modalias decoded&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;This document try to explain what the different types of modalias
values stands for.  It is in part based on information from
&amp;lt;URL: &lt;a href=&quot;https://wiki.archlinux.org/index.php/Modalias&quot;&gt;https://wiki.archlinux.org/index.php/Modalias&lt;/a&gt; &amp;gt;,
&amp;lt;URL: &lt;a href=&quot;http://unix.stackexchange.com/questions/26132/how-to-assign-usb-driver-to-device&quot;&gt;http://unix.stackexchange.com/questions/26132/how-to-assign-usb-driver-to-device&lt;/a&gt; &amp;gt;,
&amp;lt;URL: &lt;a href=&quot;http://code.metager.de/source/history/linux/stable/scripts/mod/file2alias.c&quot;&gt;http://code.metager.de/source/history/linux/stable/scripts/mod/file2alias.c&lt;/a&gt; &amp;gt; and
&amp;lt;URL: &lt;a href=&quot;http://cvs.savannah.gnu.org/viewvc/dmidecode/dmidecode.c?root=dmidecode&amp;view=markup&quot;&gt;http://cvs.savannah.gnu.org/viewvc/dmidecode/dmidecode.c?root=dmidecode&amp;view=markup&lt;/a&gt; &amp;gt;.

&lt;p&gt;The modalias entries for a given Linux machine can be found using
this shell script:&lt;/p&gt;

&lt;pre&gt;
find /sys -name modalias -print0 | xargs -0 cat | sort -u
&lt;/pre&gt;

&lt;p&gt;The supported modalias globs for a given kernel module can be found
using modinfo:&lt;/p&gt;

&lt;pre&gt;
% /sbin/modinfo psmouse | grep alias:
alias:          serio:ty05pr*id*ex*
alias:          serio:ty01pr*id*ex*
%
&lt;/pre&gt;

&lt;p&gt;&lt;strong&gt;PCI subtype&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;A typical PCI entry can look like this.  This is an Intel Host
Bridge memory controller:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
pci:v00008086d00002770sv00001028sd000001ADbc06sc00i00
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;This represent these values:&lt;/p&gt;

&lt;pre&gt;
 v   00008086  (vendor)
 d   00002770  (device)
 sv  00001028  (subvendor)
 sd  000001AD  (subdevice)
 bc  06        (bus class)
 sc  00        (bus subclass)
 i   00        (interface)
&lt;/pre&gt;

&lt;p&gt;The vendor/device values are the same values outputted from &#39;lspci
-n&#39; as 8086:2770.  The bus class/subclass is also shown by lspci as
0600.  The 0600 class is a host bridge.  Other useful bus values are
0300 (VGA compatible card) and 0200 (Ethernet controller).&lt;/p&gt;

&lt;p&gt;Not sure how to figure out the interface value, nor what it
means.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;USB subtype&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Some typical USB entries can look like this.  This is an internal
USB hub in a laptop:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
usb:v1D6Bp0001d0206dc09dsc00dp00ic09isc00ip00
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Here is the values included in this alias:&lt;/p&gt;

&lt;pre&gt;
 v    1D6B  (device vendor)
 p    0001  (device product)
 d    0206  (bcddevice)
 dc     09  (device class)
 dsc    00  (device subclass)
 dp     00  (device protocol)
 ic     09  (interface class)
 isc    00  (interface subclass)
 ip     00  (interface protocol)
&lt;/pre&gt;

&lt;p&gt;The 0900 device class/subclass means hub.  Some times the relevant
class is in the interface class section.  For a simple USB web camera,
these alias entries show up:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
usb:v0AC8p3420d5000dcEFdsc02dp01ic01isc01ip00
&lt;br&gt;usb:v0AC8p3420d5000dcEFdsc02dp01ic01isc02ip00
&lt;br&gt;usb:v0AC8p3420d5000dcEFdsc02dp01ic0Eisc01ip00
&lt;br&gt;usb:v0AC8p3420d5000dcEFdsc02dp01ic0Eisc02ip00
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;Interface class 0E01 is video control, 0E02 is video streaming (aka
camera), 0101 is audio control device and 0102 is audio streaming (aka
microphone).  Thus this is a camera with microphone included.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;ACPI subtype&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The ACPI type is used for several non-PCI/USB stuff.  This is an IR
receiver in a Thinkpad X40:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
acpi:IBM0071:PNP0511:
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The values between the colons are IDs.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;DMI subtype&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The DMI table contain lots of information about the computer case
and model.  This is an entry for a IBM Thinkpad X40, fetched from
/sys/devices/virtual/dmi/id/modalias:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
dmi:bvnIBM:bvr1UETB6WW(1.66):bd06/15/2005:svnIBM:pn2371H4G:pvrThinkPadX40:rvnIBM:rn2371H4G:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable:
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The values present are&lt;/p&gt;

&lt;pre&gt;
 bvn  IBM            (BIOS vendor)
 bvr  1UETB6WW(1.66) (BIOS version)
 bd   06/15/2005     (BIOS date)
 svn  IBM            (system vendor)
 pn   2371H4G        (product name)
 pvr  ThinkPadX40    (product version)
 rvn  IBM            (board vendor)
 rn   2371H4G        (board name)
 rvr  NotAvailable   (board version)
 cvn  IBM            (chassis vendor)
 ct   10             (chassis type)
 cvr  NotAvailable   (chassis version)
&lt;/pre&gt;

&lt;p&gt;The chassis type 10 is Notebook.  Other interesting values can be
found in the dmidecode source:&lt;/p&gt;

&lt;pre&gt;
  3 Desktop
  4 Low Profile Desktop
  5 Pizza Box
  6 Mini Tower
  7 Tower
  8 Portable
  9 Laptop
 10 Notebook
 11 Hand Held
 12 Docking Station
 13 All In One
 14 Sub Notebook
 15 Space-saving
 16 Lunch Box
 17 Main Server Chassis
 18 Expansion Chassis
 19 Sub Chassis
 20 Bus Expansion Chassis
 21 Peripheral Chassis
 22 RAID Chassis
 23 Rack Mount Chassis
 24 Sealed-case PC
 25 Multi-system
 26 CompactPCI
 27 AdvancedTCA
 28 Blade
 29 Blade Enclosing
&lt;/pre&gt;

&lt;p&gt;The chassis type values are not always accurately set in the DMI
table.  For example my home server is a tower, but the DMI modalias
claim it is a desktop.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;SerIO subtype&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;This type is used for PS/2 mouse plugs.  One example is from my
test machine:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
serio:ty01pr00id00ex00
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;The values present are&lt;/p&gt;

&lt;pre&gt;
  ty  01  (type)
  pr  00  (prototype)
  id  00  (id)
  ex  00  (extra)
&lt;/pre&gt;

&lt;p&gt;This type is supported by the psmouse driver.  I am not sure what
the valid values are.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Other subtypes&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;There are heaps of other modalias subtypes according to
file2alias.c.  There is the rest of the list from that source: amba,
ap, bcma, ccw, css, eisa, hid, i2c, ieee1394, input, ipack, isapnp,
mdio, of, parisc, pcmcia, platform, scsi, sdio, spi, ssb, vio, virtio,
vmbus, x86cpu and zorro.  I did not spend time documenting all of
these, as they do not seem relevant for my intended use with mapping
hardware to packages when new stuff is inserted during run time.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Looking up kernel modules using modalias values&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;To check which kernel modules provide support for a given modalias,
one can use the following shell script:&lt;/p&gt;

&lt;pre&gt;
  for id in $(find /sys -name modalias -print0 | xargs -0 cat | sort -u); do \
    echo &quot;$id&quot; ; \
    /sbin/modprobe --show-depends &quot;$id&quot;|sed &#39;s/^/  /&#39; ; \
  done
&lt;/pre&gt;

&lt;p&gt;The output can look like this (only the first few entries as the
list is very long on my test machine):&lt;/p&gt;

&lt;pre&gt;
  acpi:ACPI0003:
    insmod /lib/modules/2.6.32-5-686/kernel/drivers/acpi/ac.ko 
  acpi:device:
  FATAL: Module acpi:device: not found.
  acpi:IBM0068:
    insmod /lib/modules/2.6.32-5-686/kernel/drivers/char/nvram.ko 
    insmod /lib/modules/2.6.32-5-686/kernel/drivers/leds/led-class.ko 
    insmod /lib/modules/2.6.32-5-686/kernel/net/rfkill/rfkill.ko 
    insmod /lib/modules/2.6.32-5-686/kernel/drivers/platform/x86/thinkpad_acpi.ko 
  acpi:IBM0071:PNP0511:
    insmod /lib/modules/2.6.32-5-686/kernel/lib/crc-ccitt.ko 
    insmod /lib/modules/2.6.32-5-686/kernel/net/irda/irda.ko 
    insmod /lib/modules/2.6.32-5-686/kernel/drivers/net/irda/nsc-ircc.ko 
  [...]
&lt;/pre&gt;

&lt;p&gt;If you want to help implementing a system to let us propose what
packages to install when new hardware is plugged into a Debian
machine, please send me an email or talk to me on
&lt;a href=&quot;irc://irc.debian.org/%23debian-devel&quot;&gt;#debian-devel&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Update 2013-01-15:&lt;/strong&gt; Rewrite &quot;cat $(find ...)&quot; to
&quot;find ... -print0 | xargs -0 cat&quot; to make sure it handle directories
in /sys/ with space in them.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Moved the pymissile Debian packaging to collab-maint</title>
                <link>http://people.skolelinux.org/pere/blog/Moved_the_pymissile_Debian_packaging_to_collab_maint.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Moved_the_pymissile_Debian_packaging_to_collab_maint.html</guid>
                <pubDate>Thu, 10 Jan 2013 20:40:00 +0100</pubDate>
                <description>&lt;p&gt;As part of my investigation on how to improve the support in Debian
for hardware dongles, I dug up my old Mark and Spencer USB Rocket
Launcher and updated the Debian package
&lt;a href=&quot;http://packages.qa.debian.org/pymissile&quot;&gt;pymissile&lt;/a&gt; to make
sure udev will fix the device permissions when it is plugged in.  I
also added a &quot;Modaliases&quot; header to test it in the Debian archive and
hopefully make the package be proposed by jockey in Ubuntu when a user
plug in his rocket launcher.  In the process I moved the source to a
git repository under collab-maint, to make it easier for any DD to
contribute.  &lt;a href=&quot;http://code.google.com/p/pymissile/&quot;&gt;Upstream&lt;/a&gt;
is not very active, but the software still work for me even after five
years of relative silence.  The new git repository is not listed in
the uploaded package yet, because I want to test the other changes a
bit more before I upload the new version.  If you want to check out
the new version with a .desktop file included, visit the
&lt;a href=&quot;http://anonscm.debian.org/gitweb/?p=collab-maint/pymissile.git&quot;&gt;gitweb
view&lt;/a&gt; or use &quot;&lt;tt&gt;git clone
git://anonscm.debian.org/collab-maint/pymissile.git&lt;/tt&gt;&quot;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Lets make hardware dongles easier to use in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Lets_make_hardware_dongles_easier_to_use_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lets_make_hardware_dongles_easier_to_use_in_Debian.html</guid>
                <pubDate>Wed, 9 Jan 2013 15:40:00 +0100</pubDate>
                <description>&lt;p&gt;One thing that annoys me with Debian and Linux distributions in
general, is that there is a great package management system with the
ability to automatically install software packages by downloading them
from the distribution mirrors, but no way to get it to automatically
install the packages I need to use the hardware I plug into my
machine.  Even if the package to use it is easily available from the
Linux distribution.  When I plug in a LEGO Mindstorms NXT, it could
suggest to automatically install the python-nxt, nbc and t2n packages
I need to talk to it.  When I plug in a Yubikey, it could propose the
yubikey-personalization package.  The information required to do this
is available, but no-one have pulled all the pieces together.&lt;/p&gt;

&lt;p&gt;Some years ago, I proposed to
&lt;a href=&quot;http://lists.debian.org/debian-devel/2010/05/msg01206.html&quot;&gt;use
the discover subsystem to implement this&lt;/a&gt;.  The idea is fairly
simple:

&lt;ul&gt;

&lt;li&gt;Add a desktop entry in /usr/share/autostart/ pointing to a program
  starting when a user log in.&lt;/li&gt;

&lt;li&gt;Set this program up to listen for kernel events emitted when new
  hardware is inserted into the computer.&lt;/li&gt;

&lt;li&gt;When new hardware is inserted, look up the hardware ID in a
  database mapping to packages, and take note of any non-installed
  packages.&lt;/li&gt;

&lt;li&gt;Show a message to the user proposing to install the discovered
  package, and make it easy to install it.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;I am not sure what the best way to implement this is, but my
initial idea was to use dbus events to discover new hardware, the
discover database to find packages and
&lt;a href=&quot;http://www.packagekit.org/&quot;&gt;PackageKit&lt;/a&gt; to install
packages.&lt;/p&gt;

&lt;p&gt;Yesterday, I found time to try to implement this idea, and the
draft package is now checked into
&lt;a href=&quot;http://anonscm.debian.org/viewvc/debian-edu/trunk/src/hw-support-handler/&quot;&gt;the
Debian Edu subversion repository&lt;/a&gt;.  In the process, I updated the
&lt;a href=&quot;http://packages.qa.debian.org/d/discover-data.html&quot;&gt;discover-data&lt;/a&gt;
package to map the USB ids of LEGO Mindstorms and Yubikey devices to
the relevant packages in Debian, and uploaded a new version
2.2013.01.09 to unstable.  I also discovered that the current 
&lt;a href=&quot;http://packages.qa.debian.org/d/discover.html&quot;&gt;discover&lt;/a&gt;
package in Debian no longer discovered any USB devices, because
/proc/bus/usb/devices is no longer present.  I ported it to use
libusb as a fall back option to get it working.  The fixed package
version 2.1.2-6 is now in experimental (didn&#39;t upload it to unstable
because of the freeze).&lt;/p&gt;

&lt;p&gt;With this prototype in place, I can insert my Yubikey, and get this
desktop notification to show up (only once, the first time it is
inserted):&lt;/p&gt;

&lt;p align=&quot;center&quot;&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2013-01-09-hw-autoinstall.png&quot;&gt;&lt;/p&gt;

&lt;p&gt;For this prototype to be really useful, some way to automatically
install the proposed packages by pressing the &quot;Please install
program(s)&quot; button should to be implemented.&lt;/p&gt;

&lt;p&gt;If this idea seem useful to you, and you want to help make it
happen, please help me update the discover-data database with mappings
from hardware to Debian packages.  Check if &#39;discover-pkginstall -l&#39;
list the package you would like to have installed when a given
hardware device is inserted into your computer, and report bugs using
reportbug if it isn&#39;t.  Or, if you know of a better way to provide
such mapping, please let me know.&lt;/p&gt;

&lt;p&gt;This prototype need more work, and there are several questions that
should be considered before it is ready for production use.  Is dbus
the correct way to detect new hardware?  At the moment I look for HAL
dbus events on the system bus, because that is the events I could see
on my Debian Squeeze KDE desktop.  Are there better events to use?
How should the user be notified?  Is the desktop notification
mechanism the best option, or should the background daemon raise a
popup instead?  How should packages be installed?  When should they
not be installed?&lt;/p&gt;

&lt;p&gt;If you want to help getting such feature implemented in Debian,
please send me an email. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>New IRC channel for LEGO designers using Debian</title>
                <link>http://people.skolelinux.org/pere/blog/New_IRC_channel_for_LEGO_designers_using_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/New_IRC_channel_for_LEGO_designers_using_Debian.html</guid>
                <pubDate>Wed, 2 Jan 2013 15:40:00 +0100</pubDate>
                <description>&lt;p&gt;During Christmas, I have worked a bit on the Debian support for
&lt;a href=&quot;http://mindstorms.lego.com/en-us/Default.aspx&quot;&gt;LEGO Mindstorm
NXT&lt;/a&gt;.  My son and I have played a bit with my NXT set, and I
discovered I had to build all the tools myself because none were
already in Debian Squeeze.  If Debian support for LEGO is something
you care about, please join me on the IRC channel
&lt;a href=&quot;irc://irc.debian.org/%23debian-lego&quot;&gt;#debian-lego&lt;/a&gt; (server
irc.debian.org).  There is a lot that could be done to improve the
Debian support for LEGO designers.  For example both CAD software
and Mindstorm compilers are missing. :)&lt;/p&gt;

&lt;p&gt;Update 2012-01-03: A
&lt;a href=&quot;http://wiki.debian.org/LegoDesigners&quot;&gt;project page&lt;/a&gt;
including links to Lego related packages is now available.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A Christmas present for Skolelinux / Debian Edu</title>
                <link>http://people.skolelinux.org/pere/blog/A_Christmas_present_for_Skolelinux___Debian_Edu.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_Christmas_present_for_Skolelinux___Debian_Edu.html</guid>
                <pubDate>Fri, 28 Dec 2012 09:20:00 +0100</pubDate>
                <description>&lt;p&gt;I was happy to discover a few days ago that the
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux / Debian Edu&lt;/a&gt;
project also this year received a Christmas present from Another
Agency in Trondheim.  NOK 1000,- showed up on our donation account
December 24th.  I want to express our thanks for this very welcome
present.  As the Debian Edu / Skolelinux project is very short on
funding these days, and thus lack the money to do regular developer
gatherings, this donation was most welcome.  One developer gathering
cost around NOK 15&amp;nbsp;000,-, so we need quite a lot more to keep the
development pace we want.  Thus, I hope their example this year is
followed by many others. :)&lt;/p&gt;

&lt;p&gt;The public list of donors can be found on
&lt;a href=&quot;http://www.linuxiskolen.no/slxdebianlabs/donations.html&quot;&gt;the
donation page&lt;/a&gt; for the project, which also contain instructions if
you want to donate to the project.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to backport bitcoin-qt version 0.7.2-2 to Debian Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_backport_bitcoin_qt_version_0_7_2_2_to_Debian_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_backport_bitcoin_qt_version_0_7_2_2_to_Debian_Squeeze.html</guid>
                <pubDate>Tue, 25 Dec 2012 20:50:00 +0100</pubDate>
                <description>&lt;p&gt;Let me start by wishing you all marry Christmas and a happy new
year!  I hope next year will prove to be a good year.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.bitcoin.org/&quot;&gt;Bitcoin&lt;/a&gt;, the digital
decentralised &quot;currency&quot; that allow people to transfer bitcoins
between each other with minimal overhead, is a very interesting
experiment.  And as I wrote a few days ago, the bitcoin situation in
&lt;a href=&quot;http://www.debian.org/&quot;&gt;Debian&lt;/a&gt; is about to improve a bit.
The &lt;a href=&quot;http://packages.qa.debian.org/bitcoin&quot;&gt;new debian source
package&lt;/a&gt; (version 0.7.2-2) was uploaded yesterday, and is waiting
in &lt;a href=&quot;http://ftp-master.debian.org/new.html&quot;&gt;the NEW queue&lt;/A&gt;
for one of the ftpmasters to approve the new bitcoin-qt package
name.&lt;/p&gt;

&lt;p&gt;And thanks to the great work of Jonas and the rest of the bitcoin
team in Debian, you can easily test the package in Debian Squeeze
using the following steps to get a set of working packages:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
git clone git://git.debian.org/git/collab-maint/bitcoin
cd bitcoin
DEB_MAINTAINER_MODE=1 DEB_BUILD_OPTIONS=noupnp fakeroot debian/rules clean
DEB_BUILD_OPTIONS=noupnp git-buildpackage --git-ignore-new
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;You might have to install some build dependencies as well.  The
list of commands should give you two packages, bitcoind and
bitcoin-qt, ready for use in a Squeeze environment.  Note that the
client will download the complete set of bitcoin &quot;blocks&quot;, which need
around 5.6 GiB of data on my machine at the moment.  Make sure your
~/.bitcoin/ directory have lots of spare room if you want to download
all the blocks.  The client will warn if the disk is getting full, so
there is not really a problem if you got too little room, but you will
not be able to get all the features out of the client.&lt;/p&gt;

&lt;p&gt;As usual, if you use bitcoin and want to show your support of my
activities, please send Bitcoin donations to my address
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A word on bitcoin support in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/A_word_on_bitcoin_support_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_word_on_bitcoin_support_in_Debian.html</guid>
                <pubDate>Fri, 21 Dec 2012 23:59:00 +0100</pubDate>
                <description>&lt;p&gt;It has been a while since I wrote about
&lt;a href=&quot;http://www.bitcoin.org/&quot;&gt;bitcoin&lt;/a&gt;, the decentralised
peer-to-peer based crypto-currency, and the reason is simply that I
have been busy elsewhere.  But two days ago, I started looking at the
state of &lt;a href=&quot;http://packages.qa.debian.org/bitcoin&quot;&gt;bitcoin in
Debian&lt;/a&gt; again to try to recover my old bitcoin wallet.  The package
is now maintained by a
&lt;a href=&quot;https://alioth.debian.org/projects/pkg-bitcoin/&quot;&gt;team of
people&lt;/a&gt;, and the grunt work had already been done by this team.  We
owe a huge thank you to all these team members. :)
But I was sad to discover that the bitcoin client is missing in
Wheezy.  It is only available in Sid (and an outdated client from
backports).  The client had several RC bugs registered in BTS blocking
it from entering testing.  To try to help the team and improve the
situation, I spent some time providing patches and triaging the bug
reports.  I also had a look at the bitcoin package available from Matt
Corallo in a
&lt;a href=&quot;https://launchpad.net/~bitcoin/+archive/bitcoin&quot;&gt;PPA for
Ubuntu&lt;/a&gt;, and moved the useful pieces from that version into the
Debian package.&lt;/p&gt;

&lt;p&gt;After checking with the main package maintainer Jonas Smedegaard on
IRC, I pushed several patches into the collab-maint git repository to
improve the package.  It now contains fixes for the RC issues (not from
me, but fixed by Scott Howard), build rules for a Qt GUI client
package, konqueror support for the bitcoin: URI and bash completion
setup.  As I work on Debian Squeeze, I also created
&lt;a href=&quot;http://lists.alioth.debian.org/pipermail/pkg-bitcoin-devel/Week-of-Mon-20121217/000041.html&quot;&gt;a
patch to backport&lt;/a&gt; the latest version.  Jonas is going to look at
it and try to integrate it into the git repository before uploading a
new version to unstable.

&lt;p&gt;I would very much like bitcoin to succeed, to get rid of the
centralized control currently exercised in the monetary system.  I
find it completely unacceptable that the USA government is collecting
transaction data for almost all international money transfers (most are done in USD and transaction logs shipped to the spooks), and
that the major credit card companies can block legal money
transactions to Wikileaks.  But for bitcoin to succeed, more people
need to use bitcoins, and more people need to accept bitcoins when
they sell products and services.  Improving the bitcoin support in
Debian is a small step in the right direction, but not enough.
Unfortunately the user experience when browsing the web and wanting to
pay with bitcoin is still not very good.  The bitcoin: URI is a step
in the right direction, but need to work in most or every browser in
use.  Also the bitcoin-qt client is too heavy to fire up to do a
quick transaction.  I believe there are other clients available, but
have not tested them.&lt;/p&gt;

&lt;p&gt;My
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Now_accepting_bitcoins___anonymous_and_distributed_p2p_crypto_money.html&quot;&gt;experiment
with bitcoins&lt;/a&gt; showed that at least some of my readers use bitcoin.
I received 20.15 BTC so far on the address I provided in my blog two
years ago, as can be
&lt;a href=&quot;http://blockexplorer.com/address/15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;seen
on the blockexplorer service&lt;/a&gt;.  Thank you everyone for your
donation.  The blockexplorer service demonstrates quite well that
bitcoin is not quite anonymous and untracked. :) I wonder if the
number of users have gone up since then.  If you use bitcoin and want
to show your support of my activity, please send Bitcoin donations to
the same address as last time,
&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Ledger - double-entry accounting using text based storage format</title>
                <link>http://people.skolelinux.org/pere/blog/Ledger___double_entry_accounting_using_text_based_storage_format.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Ledger___double_entry_accounting_using_text_based_storage_format.html</guid>
                <pubDate>Tue, 18 Dec 2012 23:30:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago I came across
&lt;a href=&quot;http://joeyh.name/blog/entry/hledger/&quot;&gt;a blog post from Joey
Hess&lt;/a&gt; describing &lt;a href=&quot;http://ledger-cli.org/&quot;&gt;ledger&lt;/a&gt; and
hledger, a text based system for double-entry accounting.  I found it
interesting, as I am involved with several organizations where
accounting is an issue, and I have not really become too friendly with
the different web based systems we use.  I find it hard to find what I
look for in the menus and even harder try to get sensible data out of
the systems.  Ledger seem different.  The accounting data is kept in
text files that can be stored in a version control system, and there

are at least &lt;a href=&quot;https://github.com/ledger/ledger/wiki/Ports&quot;&gt;five
different implementations&lt;/a&gt; able to read the format.  An example
entry look like this, and is simple enough that it will be trivial to
generate entries based on CVS files fetched from the bank:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
2004-05-27 Book Store
      Expenses:Books                 $20.00
      Liabilities:Visa
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The concept seemed interesting enough for me to check it out and
look for others using it.  I found blog posts from
&lt;a href=&quot;http://blog.spang.cc/posts/hledger_rocks_my_world/&quot;&gt;Christine
Spang&lt;/a&gt;,
&lt;a href=&quot;http://bugsplat.info/2010-05-23-keeping-finances-with-ledger.html&quot;&gt;Pete
Keen&lt;/a&gt;,
&lt;a href=&quot;http://blog.andrewcantino.com/blog/2010/11/06/command-line-accounting-with-ledger-and-reckon/&quot;&gt;Andrew
Cantino&lt;/a&gt; and
&lt;a href=&quot;http://blog.iphoting.com/blog/2012/11/29/command-line-double-entry-accounting/&quot;&gt;Ronald
Ip&lt;/a&gt; describing how they use it, as well as a post from
&lt;a href=&quot;https://groups.google.com/forum/?fromgroups=#!topic/ledger-cli/r0oWjwbQ9Bo&quot;&gt;Bradley
M. Kuhn&lt;/a&gt; at the Software Freedom Conservancy.  All seemed like good
recommendations fitting my need.&lt;/p&gt;

&lt;p&gt;The &lt;a href=&quot;http://packages.qa.debian.org/l/ledger.html&quot;&gt;ledger&lt;/a&gt;
package is available in Debian Squeeze, while the
&lt;a href=&quot;http://packages.qa.debian.org/h/haskell-hledger.html&quot;&gt;hledger&lt;/a&gt;
package only is available in Debian Sid.  As I use Squeeze, ledger
seemed the best choice to get started.&lt;/p&gt;

&lt;p&gt;To get some real data to test on, I wrote a
&lt;a href=&quot;http://www.nuug.no/tools/lodo2ledger&quot;&gt;web scraper&lt;/a&gt; for
&lt;a href=&quot;http://www.lodo.no/&quot;&gt;LODO&lt;/a&gt;, the accounting system used by
the &lt;a href=&quot;http://www.nuug.no/&quot;&gt;NUUG&lt;/a&gt; association, and started to
play with the data set.  I&#39;m not really deeply into accounting, but I
am able to get a simple balance and accounting status for example
using the &quot;&lt;tt&gt;ledger balance&lt;/tt&gt;&quot; command.  But I will have to
gather more experience before I know if the ledger way is a good fit
for the organisations I am involved in.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Scripting the Cerebrum/bofhd user administration system using XML-RPC</title>
                <link>http://people.skolelinux.org/pere/blog/Scripting_the_Cerebrum_bofhd_user_administration_system_using_XML_RPC.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Scripting_the_Cerebrum_bofhd_user_administration_system_using_XML_RPC.html</guid>
                <pubDate>Thu, 6 Dec 2012 10:30:00 +0100</pubDate>
                <description>&lt;p&gt;Where I work at the &lt;a href=&quot;http://www.uio.no/&quot;&gt;University of
Oslo&lt;/a&gt;, we use the
&lt;a href=&quot;http://sourceforge.net/projects/cerebrum/&quot;&gt;Cerebrum user
administration system&lt;/a&gt; to maintain users, groups, DNS, DHCP, etc.
I&#39;ve known since the system was written that the server is providing
an &lt;a href=&quot;http://en.wikipedia.org/wiki/XML-RPC&quot;&gt;XML-RPC&lt;/a&gt; API, but
I have never spent time to try to figure out how to use it, as we
always use the bofh command line client at work.  Until today.  I want
to script the updating of DNS and DHCP to make it easier to set up
virtual machines.  Here are a few notes on how to use it with
Python.&lt;/p&gt;

&lt;p&gt;I started by looking at the source of the Java
&lt;a href=&quot;http://cerebrum.svn.sourceforge.net/viewvc/cerebrum/trunk/cerebrum/clients/jbofh/&quot;&gt;bofh
client&lt;/a&gt;, to figure out how it connected to the API server.  I also
googled for python examples on how to use XML-RPC, and found
&lt;a href=&quot;http://tldp.org/HOWTO/XML-RPC-HOWTO/xmlrpc-howto-python.html&quot;&gt;a
simple example in&lt;/a&gt; the XML-RPC howto.&lt;/p&gt;

&lt;p&gt;This simple example code show how to connect, get the list of
commands (as a JSON dump), and how to get the information about the
user currently logged in:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
#!/usr/bin/env python
import getpass
import xmlrpclib
server_url = &#39;https://cerebrum-uio.uio.no:8000&#39;;
username = getpass.getuser()
password = getpass.getpass()
server = xmlrpclib.Server(server_url);
#print server.get_commands(sessionid)
sessionid = server.login(username, password)
print server.run_command(sessionid, &quot;user_info&quot;, username)
result = server.logout(sessionid)
print result
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;Armed with this knowledge I can now move forward and script the DNS
and DHCP updates I wanted to do.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Why isn&#39;t the value of copyright taxed?</title>
                <link>http://people.skolelinux.org/pere/blog/Why_isn_t_the_value_of_copyright_taxed_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Why_isn_t_the_value_of_copyright_taxed_.html</guid>
                <pubDate>Sat, 17 Nov 2012 11:30:00 +0100</pubDate>
                <description>&lt;p&gt;While working on a
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;Norwegian
translation of the Free Culture by Lawrence Lessig&lt;/a&gt; (76% done),
which cover the problems with todays copyright law and how it stifles
creativity, one idea occurred to me.  The idea is to get the tax
office to help make more works enter the public domain and also help
make it easier to clear rights for using copyrighted works.&lt;/p&gt;

&lt;p&gt;I mentioned this idea briefly during Yesterdays
&lt;a href=&quot;http://www.farmann.no/2012/11/14/john-perry-barlow-in-oslo-friday-nov-16
-15-30-19-00/&quot;&gt;presentation
by John Perry Barlow&lt;/a&gt;, and concluded that it was best to put it
in writing for a wider audience.  The idea is not really based on the
argument that copyrighted works are &quot;intellectual property&quot;, as the
core requirement is that copyrighted work have value for the copyright
holder and the tax office like to collect their share from any value
controlled by the citizens in a country.  I&#39;m sharing the idea here to
let others consider it and perhaps shoot it down with a fresh set of
arguments.&lt;/p&gt;

&lt;p&gt;Most valuables are taxed by the government.  At least here in
Norway, the amount of money you have, the value of our land property,
the value of your house, the value of your car, the value of our
stocks and other valuables are all added together.  If the tax value
of these values exceed your debt, you have to pay the tax office some
taxes for these values.  And copyrighted work have value.  It have
value for the rights holder, who can earn money selling access to the
work.  But it is not included in the tax calculations?  Why not?&lt;/p&gt;

&lt;p&gt;If the government want to tax copyrighted works, it would want to
maintain a database of all the copyrighted works and who are the
rights holders for a given works, to be able to associate the works
value to the right citizen or company for tax purposes.  If such
database exist, it will become a lot easier to find out who to talk to
for clearing permissions to use a copyrighted work, which is a very
hard operation with todays copyright law.  To ensure that copyright
holders keep the database up-to-date, it would have to become a
requirement to be able to collect money for granting access to
copyrighted works that the work is listed in the database with the
correct right holder.&lt;/p&gt;

&lt;p&gt;If copyright causes copyright holders to have to pay more taxes,
they will have a small incentive to &quot;disown&quot; their copyright, and let
the work enter the public domain. For works with several right holders
one of the right holders could state (and get it registered in the
database) that she do not need to be consulted when clearing rights to
use the work in question and thus will not get any income from that
work.  Stating this would have to be impossible to revert and stop the
tax office from adding the value of that work to the given citizens
tax calculation.  I assume the copyright law would stay the same,
allowing creators to pick a license of their choosing, and also
allowing them to put their work directly in the public domain.  The
existence of such database will make it even easier to clear rights,
and if the right holders listed in the database is taxed, this system
would increase the amount of works that enter the public domain.&lt;/p&gt;

&lt;p&gt;The effect would be that the tax office help to make it easier to
get rights to use the works that have not yet entered the public
domain and help to get more work into the public domain.&lt;/p&gt;

&lt;p&gt;Why have such taxing not happened yet?  I am sure the tax office
would like to tax copyrighted work values if they could.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Angela Fuß</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Angela_Fu_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Angela_Fu_.html</guid>
                <pubDate>Wed, 14 Nov 2012 21:30:00 +0100</pubDate>
                <description>&lt;p&gt;Here is another interview with one of the people in the &lt;a
href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt;
community.  I am running short on people willing to be interviewed, so
if you know about someone I should interview, Please send me an email.
After asking for many months, I finally managed to lure another one of
the people behind the German
&quot;&lt;a href=&quot;http://wiki.it-zukunft-schule.de/&quot;&gt;IT-Zukunft Schule&lt;/a&gt;&quot;
project out from maternity leave to conduct an interview.  Give a warm
welcome to Angela Fuß. :)&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am a 39-year-old woman living in the very north of Germany near
Denmark. I live in a patchwork family with &quot;my man&quot; Mike Gabriel, my
two daughters, Mikes daughter and Mikes and my rather newborn son.

&lt;p&gt;At the moment - because of our little baby - I am spending most of
the day by being a caring and organising mom for all the kids.
Besides that I am really involved into and occupied with several inner
growth processes: New born souls always bring the whole familiar
system into movement and that needs time and focus ;-).  We are also
in the middle of buying a house and moving to it.&lt;/p&gt;

&lt;p&gt;In 2013 I will work again in my job in a German foundation for
nature conservation. I am doing public relation work there.  Besides
that - and that is the connection to Skolelinux / Debian Edu - I am
working in our own school project &quot;IT-Zukunft Schule&quot; in North
Germany. I am responsible for the quality assurance, the customer
relationship management and the communication processes in the
project.&lt;/p&gt;

&lt;p&gt;Since 2001 I constantly have been training myself in communication
and leadership. Besides that I am a forester, a landscaping gardener
and a yoga teacher.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux / Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I fell in love with Mike ;-).&lt;/p&gt;

&lt;p&gt;Very soon after getting to know him I was completely enrolled into
Free Software.  At this time Mike did IT-services for one newly
founded school in Kiel. Other schools in Kiel needed concepts for
their IT environment.  Often when Mike came home from working at the
newly founded school I found myself listening to his complaints about
several points where the communication with the schools head or the
teachers did not work.  So we were clear that he would not work for
one more school if we did not set up a structure for communication
between him, the schools head, the teachers, the students and the
parents.&lt;/p&gt;

&lt;p&gt;Together with our friend and hardware supplier Andreas Buchholz we
started to get an overview of free software solutions suitable for
schools. One day before Christmas 2010 Mike and I had a date with Kurt
Gramlich in Gütersloh. As Kurt and I are really interested in building
networks of people and in being in communication we dived into
Skolelinux and brought it to the first grammar schools in Northern
Germany.&lt;/p&gt;

&lt;p&gt;For information about our school project you can read
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Mike_Gabriel.html&quot;&gt;the
interview with Mike Gabriel&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;First I have to say: I cannot answer this question technically. My
answer comes rather from a social point of view.&lt;/p&gt;

&lt;p&gt;The biggest advantage of Skolelinux / Debian Edu I see is the large
and strong international community of Debian Developers in the
background which is very alive and connected over mailinglists, blogs
and meetings. My constant feeling for the Debian Community is: If
something does not work they will somehow fix it. All is well
;-). This is of course a user experience.  What I also get as a big
advantage of Skolelinux / Debian Edu is that everybody who uses it and
works with it can also contribute to it - that includes students,
teachers, parents...&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux / Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I will answer this question relating to the internal structure of
Skolelinux / Debian Edu.&lt;/p&gt;

&lt;p&gt;What I see as a major disadvantage is that there is a gap between
the group of developers for Debian Edu and the people who make the
marketing, that means the people that bring Skolelinux to the
schools. There is a lack of communication between these two groups and
I think that does not really work for Skolelinux / Debian Edu.&lt;/p&gt;

&lt;p&gt;Further I appreciate that Skolelinux / Debian Edu is known as a
do-ocracy. Nevertheless I keep asking myself if at some points a
democracy or some kind of hierarchical project structure would be good
and helpful.  I am also missing some kind of contact between the
Skolelinux / Debian Edu communities in Europe or on an international
level. I think it would be good if there was more sharing between the
different countries using Skolelinux / Debian Edu.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;On my laptop I am still using an Ubuntu 10.04 with a Gnome Desktop
on.  As applications I use Openoffice.org, Gedit, Firefox, Pidgin,
LaTeX and GnuCash. For mails I am using Horde. And I am really fond of
my N900 running with Maemo.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am really convinced that in our school project &quot;IT-Zukunft
Schule&quot; we have developed (and keep developing) a great way to get
schools to use Free Software. We have written a detailed concept for
that so I cannot explain the whole thing here. But in a nutshell the
strategy has three crucial pillars:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;We really take time to get what sort of stories, questions and
concerns the schools head and the teachers have about using different
kinds of IT and we take time to enrol them into Free Software.&lt;/li&gt;

&lt;li&gt;Our solution for schools is never just technical. In the centre
are always the people who are going to use the software. From the very
beginning of the planning for a school, we tell the schools head that
they are paying us not only for a technical solution for their school,
they also pay us for leading all the communication processes
needed. If they do not want that, we are not working with them because
we cannot give a guarantee for the quality of our work then.&lt;/li&gt;

&lt;li&gt;Another focus lies in the training of teachers and students in
co-administrating the IT-System at their school. They start getting in
contact with the Skolelinux / Debian Edu community and they get the
offer to become more and more independent from us.&lt;/li&gt;

&lt;/ul&gt;
</description>
        </item>
        
        <item>
                <title>The European Central Bank (ECB) take a look at bitcoin</title>
                <link>http://people.skolelinux.org/pere/blog/The_European_Central_Bank__ECB__take_a_look_at_bitcoin.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_European_Central_Bank__ECB__take_a_look_at_bitcoin.html</guid>
                <pubDate>Sun, 4 Nov 2012 08:30:00 +0100</pubDate>
                <description>&lt;p&gt;Slashdot just ran a story about the European Central Bank (ECB)
&lt;a href=&quot;http://www.ecb.europa.eu/pub/pdf/other/virtualcurrencyschemes201210en.pdf&quot;&gt;releasing
a report (PDF)&lt;/a&gt; about virtual currencies and
&lt;a href=&quot;http://www.bitcoin.org/&quot;&gt;bitcoin&lt;/a&gt;.  It is interesting to
see how a member of the bitcoin community
&lt;a href=&quot;http://blog.bitinstant.com/blog/2012/10/30/the-ecb-report-on-bitcoin-and-virtual-currencies.html&quot;&gt;receive
the report&lt;/a&gt;.  As for the future, I suspect the central banks and
the governments will outlaw bitcoin if it gain any popularity, to avoid
competition.  My thoughts go to the
&lt;a href=&quot;http://en.wikipedia.org/wiki/Wörgl&quot;&gt;Wörgl experiment&lt;/a&gt; with
negative inflation on cash which was such a success that it was
terminated by the Austrian National Bank in 1933.  A successful
alternative would be a threat to the current money system and gain
powerful forces to work against it.&lt;/p&gt;

&lt;p&gt;While checking out the current status of bitcoin, I also discovered
that the community already seem to have
&lt;a href=&quot;http://www.theverge.com/2012/8/27/3271637/bitcoin-savings-trust-pyramid-scheme-shuts-down&quot;&gt;experienced
its first pyramid game / Ponzi scheme&lt;/a&gt;.  Not very surprising, given
how members of &quot;small&quot; communities tend to trust each other.  I guess
enterprising crocks will try again and again, as they do anywhere
wealth is available.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>12 years of outages - summarised by Stuart Kendrick</title>
                <link>http://people.skolelinux.org/pere/blog/12_years_of_outages___summarised_by_Stuart_Kendrick.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/12_years_of_outages___summarised_by_Stuart_Kendrick.html</guid>
                <pubDate>Fri, 26 Oct 2012 14:20:00 +0200</pubDate>
                <description>&lt;p&gt;I work at the &lt;a href=&quot;http://www.uio.no/&quot;&gt;University of Oslo&lt;/a&gt;
looking after the computers, mostly on the unix side, but in general
all over the place.  I am also a member (and currently leader) of
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;the NUUG association&lt;/a&gt;, which in turn
make me a member of &lt;a href=&quot;http://www.usenix.org/&quot;&gt;USENIX&lt;/a&gt;.  NUUG
is an member organisation for us in Norway interested in free
software, open standards and unix like operating systems, and USENIX
is a US based member organisation with similar targets.  And thanks to
these memberships, I get all issues of the great USENIX magazine
&lt;a href=&quot;https://www.usenix.org/publications/login&quot;&gt;;login:&lt;/a&gt; in the
mail several times a year.  The magazine is great, and I read most of
it every time.&lt;/p&gt;

&lt;p&gt;In the last issue of the USENIX magazine ;login:, there is an
article by &lt;a href=&quot;http://www.skendric.com/&quot;&gt;Stuart Kendrick&lt;/a&gt; from
Fred Hutchinson Cancer Research Center titled
&quot;&lt;a href=&quot;https://www.usenix.org/publications/login/october-2012-volume-37-number-5/what-takes-us-down&quot;&gt;What
Takes Us Down&lt;/a&gt;&quot; (longer version also
&lt;a href=&quot;http://www.skendric.com/problem/incident-analysis/2012-06-30/What-Takes-Us-Down.pdf&quot;&gt;available
from his own site&lt;/a&gt;), where he report what he found when he
processed the outage reports (both planned and unplanned) from the
last twelve years and classified them according to cause, time of day,
etc etc.  The article is a good read to get some empirical data on
what kind of problems affect a data centre, but what really inspired
me was the kind of reporting they had put in place since 2000.&lt;p&gt;

&lt;p&gt;The centre set up a mailing list, and started to send fairly
standardised messages to this list when a outage was planned or when
it already occurred, to announce the plan and get feedback on the
assumtions on scope and user impact.  Here is the two example from the
article: First the unplanned outage:

&lt;blockquote&gt;&lt;pre&gt;
Subject:     Exchange 2003 Cluster Issues
Severity:    Critical (Unplanned)
Start:       Monday, May 7, 2012, 11:58
End:         Monday, May 7, 2012, 12:38
Duration:    40 minutes
Scope:       Exchange 2003
Description: The HTTPS service on the Exchange cluster crashed, triggering
             a cluster failover.

User Impact: During this period, all Exchange users were unable to
             access e-mail. Zimbra users were unaffected.
Technician:  [xxx]
&lt;/pre&gt;&lt;/blockquote&gt;

Next the planned outage:

&lt;blockquote&gt;&lt;pre&gt;
Subject:     H Building Switch Upgrades
Severity:    Major (Planned)
Start:       Saturday, June 16, 2012, 06:00
End:         Saturday, June 16, 2012, 16:00
Duration:    10 hours
Scope:       H2 Transport
Description: Currently, Catalyst 4006s provide 10/100 Ethernet to end-
             stations. We will replace these with newer Catalyst
             4510s.
User Impact: All users on H2 will be isolated from the network during
             this work. Afterward, they will have gigabit
             connectivity.
Technician:  [xxx]
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;He notes in his article that the date formats and other fields have
been a bit too free form to make it easy to automatically process them
into a database for further analysis, and I would have used ISO 8601
dates myself to make it easier to process (in other words I would ask
people to write &#39;2012-06-16 06:00 +0000&#39; instead of the start time
format listed above).  There are also other issues with the format
that could be improved, read the article for the details.&lt;/p&gt;

&lt;p&gt;I find the idea of standardising outage messages seem to be such a
good idea that I would like to get it implemented here at the
university too.  We do register
&lt;a href=&quot;http://www.uio.no/tjenester/it/aktuelt/planlagte-tjenesteavbrudd/&quot;&gt;planned
changes and outages in a calendar&lt;/a&gt;, and report the to a mailing
list, but we do not do so in a structured format and there is not a
report to the same location for unplanned outages.  Perhaps something
for other sites to consider too?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Amazon steal books from customer and throw out her out without any explanation</title>
                <link>http://people.skolelinux.org/pere/blog/Amazon_steal_books_from_customer_and_throw_out_her_out_without_any_explanation.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Amazon_steal_books_from_customer_and_throw_out_her_out_without_any_explanation.html</guid>
                <pubDate>Mon, 22 Oct 2012 20:30:00 +0200</pubDate>
                <description>&lt;p&gt;A blog post from Martin Bekkelund today tell the story of
&lt;a href=&quot;http://www.bekkelund.net/2012/10/22/outlawed-by-amazon-drm/&quot;&gt;how
Amazon erased the books from a customer&#39;s kindle, locked the account
and refuse to tell the customer why&lt;/a&gt;.  If a real book store did
this to a customer, it would be called breaking into private property
and theft.  The story has spread around the net today.  A bit more
background information is available in Norwegian from
&lt;a href=&quot;http://www.digi.no/904658/hun-ble-kastet-ut-av-amazon&quot;&gt;digi.no&lt;/a&gt;.
It is no surprise that digital restriction mechanisms (DRM) are used
this way, as it has been warned about such abuse since DRM was
introduced many years back.  And Amazon proved in 2009 that it was
willing to
&lt;a href=&quot;http://boingboing.net/2009/07/20/amazons-orwellian-de.html&quot;&gt;
break into customers equipment and remove the books&lt;/a&gt; people had
bought, when it removed the book 1984 by George Orwell from all the
customers who had bought it.  From the official comments, it even
sounded like
&lt;a href=&quot;http://www.nytimes.com/2009/07/18/technology/companies/18amazon.html&quot;&gt;Amazon
would never do that again&lt;/a&gt;.  And here we are, three years
later.&lt;/p&gt;

&lt;p&gt;And thought this action is
&lt;a href=&quot;http://www.itavisen.no/904648/forbrukerraadet-helt-haarreisende&quot;&gt;against
Norwegian regulations and law&lt;/a&gt;, it is according to the terms of use
as written by Amazon, and it is hard to hold Amazon accountable to
Norwegian laws.  It is just yet another example of unacceptable terms
of use on the web, and how they are used to remove customer
rights.&lt;/p&gt;

&lt;p&gt;Luckily for electronic books, there are alternatives without
unacceptable terms.  For example
&lt;a href=&quot;http://www.gutenberg.org/&quot;&gt;Project Gutenberg&lt;/a&gt; (about 40,000
books), &lt;a href=&quot;http://runeberg.org/&quot;&gt;Project Runenberg&lt;/a&gt; (1,652
books) and &lt;a href=&quot;http://www.archive.org/details/texts&quot;&gt;The Internet
Archive&lt;/a&gt; (3,641,797 books) have heaps of books without DRM, which
can read by anyone and shared with anyone.&lt;/p&gt;

&lt;p&gt;Update 2012-10-23: This story broke in the morning on Monday. In
the evening after the story had spread all across the Internet, Amazon
restored the account of the user, as reported by
&lt;a href=&quot;http://www.digi.no/904675/helomvending-fra-amazon&quot;&gt;digi.no&lt;/a&gt;
and &lt;a href=&quot;http://nrk.no/kultur-og-underholdning/1.8368487&quot;&gt;NRK&lt;/a&gt;.
Apparently public pressure work.  The story from Martin have seen
several twitter messages per minute the last 24 hours, which is quite
a lot, and is still drawing a lot of attention.  But even when the
account is restored, the fundamental problem still exist.  I recommend
reading two opinions from
&lt;a href=&quot;http://blogs.computerworlduk.com/simon-says/2012/10/rights-you-have-no-right-to-your-ebooks/index.htm&quot;&gt;Simon
Phipps&lt;/a&gt; and
&lt;a href=&quot;http://blogs.computerworlduk.com/open-enterprise/2012/10/is-amazon-playing-fair/index.htm&quot;&gt;Glen
Moody&lt;/a&gt; if you want to learn more about the fundamentals and more
details about the original story.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The fight for freedom and privacy</title>
                <link>http://people.skolelinux.org/pere/blog/The_fight_for_freedom_and_privacy.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_fight_for_freedom_and_privacy.html</guid>
                <pubDate>Thu, 18 Oct 2012 10:50:00 +0200</pubDate>
                <description>&lt;p&gt;Civil liberties and privacy in the western world are going down the
drain, and it is hard to fight against it.  I try to do my best, but
time is limited.  I hope you do your best too.  A few years ago I came
across a marvellous drawing by
&lt;a href=&quot;http://www.claybennett.com/about.html&quot;&gt;Clay Bennett&lt;/a&gt;
visualising some of what is going on.

&lt;p&gt;&lt;a href=&quot;http://www.claybennett.com/pages/security_fence.html&quot;&gt;
&lt;img src=&quot;http://www.claybennett.com/images/archivetoons/security_fence.jpg&quot;&gt;&lt;/a&gt;&lt;/p&gt;

&lt;blockquote&gt;
«They who can give up essential liberty to obtain a little temporary
safety, deserve neither liberty nor safety.» - Benjamin Franklin
&lt;/blockquote&gt;

&lt;p&gt;Do you feel safe at the airport?  I do not.  Do you feel safe when
you see a surveillance camera?  I do not.  Do you feel safe when you
leave electronic traces of your behaviour and opinions?  I do not.  I
just remember &lt;a href=&quot;http://en.wikipedia.org/wiki/Panopticon&quot;&gt;the
Panopticon&lt;/a&gt;, and can not help to think that we are slowly
transforming our society to a huge Panopticon on our own.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>ColonHelp produser sue WordPress to silence critic</title>
                <link>http://people.skolelinux.org/pere/blog/ColonHelp_produser_sue_WordPress_to_silence_critic.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/ColonHelp_produser_sue_WordPress_to_silence_critic.html</guid>
                <pubDate>Fri, 12 Oct 2012 23:50:00 +0200</pubDate>
                <description>&lt;p&gt;Thanks to a blog post by
&lt;a href=&quot;http://ramblingfoo.blogspot.no/2012/10/a-shitstorm-is-comming.html&quot;&gt;Eddy
Petrișor&lt;/a&gt;, I became aware of yet another &quot;alternative medicine&quot;
company using legal intimidation tactics to scare off critics.
According to the originating blog post about the detox &quot;cure&quot;
&lt;a href=&quot;http://insulaindoielii.wordpress.com/2012/10/11/colon-help-sues-wordpress/&quot;&gt;ColonHelp
and its producers Zenyth Pharmaceuticals actions&lt;/a&gt;, the producer
sues Wordpress to get rid of the critical information.  To check if
the story was for real, I contacted Automattic, the company behind
wordpress.com, and they reply was &quot;We can confirm that Zenyth is
seeking a court order against WordPress / Automattic.  However, we
don&#39;t believe the Terms of Service have been violated in this
matter&quot;.&lt;/p&gt;

&lt;p&gt;The story seem to be simply that a blogger checked the scientific
foundation for a popular health product in Rumania, ColonHelp, and
reported that there was no reason at all to believe it improved the
health of its users.  This caused the company behind the product,
Zenyth Pharmaceuticals, to use legal intimidation to try to silence
the critic, instead of presenting its views and scientific foundation
to argue its side.&lt;/p&gt;

&lt;p&gt;This is the usual story, and the Zenyth Pharmaceuticals company
deserve everyone to know how it failed to act properly.  Lets hope the
&lt;a href=&quot;http://en.wikipedia.org/wiki/Streisand_effect&quot;&gt;Streisand
effect&lt;/a&gt; can make it rethink its strategy.&lt;/p&gt;

&lt;p&gt;What is the harm, you might think.  I suggest you take a look at
&lt;a href=&quot;http://www.whatstheharm.net/detoxification.html&quot;&gt;a list of
victims of detoxification&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Why is your local library collecting the &quot;wrong&quot; computer books?</title>
                <link>http://people.skolelinux.org/pere/blog/Why_is_your_local_library_collecting_the__wrong__computer_books_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Why_is_your_local_library_collecting_the__wrong__computer_books_.html</guid>
                <pubDate>Wed, 3 Oct 2012 10:00:00 +0200</pubDate>
                <description>&lt;p&gt;I just read the blog post from Tim Retout
&lt;a href=&quot;http://retout.co.uk/blog/2012/10/02/the-library-challenge&quot;&gt;about
the computer science book collection available in his local
library&lt;/a&gt;, and just wanted to share my comment on his theory about
computer books becoming obsolete so soon.  That is part of the reason
why the selection is so sad in almost any local library (it is in mine
too), but I believe the major contributing factor is that the people
buying books to the library have no way to know a good and future
computer classic from trash.  And they need to know which one will
become a classic in the future, as they would normally buy one of the
recently published books.&lt;/p&gt;

&lt;p&gt;During my university years, I worked for a while at the university
library, and even there the person in charge of buying computer
related books (and in fact any natural science related book), did not
know enough about computers to make a good educated guess.  Once, just
before Christmas, they had some leftover money on the book budget and
I was asked if I could pick out a lot of computer books in the
university book store, for the library to buy for their collection.  I
had a great time picking all the books I dreamt of buying and reading,
and the books I knew were classics (like most of the
&lt;a href=&quot;http://en.wikipedia.org/wiki/W._Richard_Stevens&quot;&gt;Stevens
collection&lt;/a&gt;).  I picked several of the generic O&#39;Reilly books (ie
documenting protocols, formats and systems, not specific versions of
products) and stayed away from the &#39;teach yourself X in N days&#39; class.
I had a great time, and probably picked out more than a hundred books
for the library that evening.&lt;/p&gt;

&lt;p&gt;The sad fact is that there is no way a overworked librarian is
going to know that for example
&lt;a href=&quot;http://en.wikipedia.org/wiki/The_Practice_of_Programming&quot;&gt;The
Practice of Programming&lt;/a&gt; is a must-have in any computer library,
and they will most of the time end up picking the wrong books to buy.
Perhaps you can help your local library make better choices by giving
the suggestions for books to get?  I know they would love to hear from
you, even if their budget might block them from getting your favourite
book right away.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Seventy percent done with Norwegian docbook version of Free Culture</title>
                <link>http://people.skolelinux.org/pere/blog/Seventy_percent_done_with_Norwegian_docbook_version_of_Free_Culture.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Seventy_percent_done_with_Norwegian_docbook_version_of_Free_Culture.html</guid>
                <pubDate>Sun, 23 Sep 2012 09:30:00 +0200</pubDate>
                <description>&lt;p&gt;Since this summer, I have worked in my spare time on a Norwegian &lt;a
href=&quot;http://www.docbook.org/&quot;&gt;docbook&lt;/a&gt; version of the 2004 book &lt;a
href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt; by Lawrence Lessig.
The reason is that this book is a great primer on what problems exist
in the current copyright laws, and I want it to be available also for
those that are reluctant do read an English book.

When I started, I 
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Dugnad_for___sende_norsk_versjon_av_Free_Culture_til_stortingets_representanter_.html&quot;&gt;called
for volunteers&lt;/a&gt; to help me, but too few have volunteered so far,
and progress is a bit slow.  Anyway, today I broken the 70 percent
mark for the first rough translation.  At the moment, less than 700
strings (paragraphs, index terms, titles) are left to translate.  With
my current progress of 10-20 strings per day, it will take a while to
complete the translation.  This graph show the updated progress:&lt;/p&gt;

&lt;img width=&quot;80%&quot; align=&quot;center&quot; src=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/raw/master/progress.png&quot;&gt;

&lt;p&gt;Progress have slowed down lately due to family and work
commitments.  If you want to help, please get in touch, and check out
the project files currently available from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;If you are curious what the translated book currently look like,
the updated
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.pdf?raw=true&quot;&gt;PDF&lt;/a&gt;
and
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.epub?raw=true&quot;&gt;EPUB&lt;/a&gt;
are published on github.  The HTML version is published as well, but
github hand it out with MIME type text/plain, confusing browsers, so I
saw no point in linking to that version.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Giorgio Pioda</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Giorgio_Pioda.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Giorgio_Pioda.html</guid>
                <pubDate>Mon, 17 Sep 2012 14:10:00 +0200</pubDate>
                <description>&lt;p&gt;After a long break in my row of interviews with people in the
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt;
community, I finally found time to wrap up another.  This time it is
Giorgio Pioda, which showed up on the mailing list at the start of
this year, asking questions and inspiring us to improve the first time
administrators experience with Skolelinux. :) The interview was
conduced in May, but I only found time to publish it now.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I have a PhD in chemistry but since several years I work as teacher
in secondary (15-18 year old students) and tertiary (a kind of &quot;light&quot;
university) schools. Five years ago I started to manage a Learning
Management Service server and slowly I got more and more involved with
IT. 3 years ago the graduating schools moved completely to Linux and I
got the head of the IT for this. The experience collected in chemistry
labs computers (for example NMR analysis of protein folding) and in
the IT-courses during university where sufficient to start. Self
training is anyway very important&lt;/p&gt;

&lt;p&gt;I live in the Italian speaking part of Switzerland, and the
&lt;a href=&quot;http://www.spse.ch/&quot;&gt;SPSE school&lt;/a&gt; (secondary) is a very
special sport school for young people who try to became sport pro (for
all sports, we have dozens of disciplines represented) and we are
recognised by the Olympic Swiss Organisation.

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Looking for Linux / Primary Domain Controller (PDC) I found it
already several years ago. But since the system was still not
Kerberized and since our schools relies strongly on laptops I didn&#39;t
use it. I plan to introduce it in the next future, probably for the
next school year, since the squeeze release solved this security
hole.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Many. First of all there is a strong and living community that is
very generous for help and hints.  Chat help is crucial, together with
the mailing list.  Second. With Skolelinux you get an already well
engineered platform and you don&#39;t have to start to build up your PDC
and your clients from GNU/scratch; I&#39;ve already done this once and I
can tell it, it is hard. Third, since Skolelinux is a standard
platform, it is way easier to educate other IT people and even if the
head IT is sick another one could pick up the task without too much
hassle.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The only real problem I see is that it is a little too less
flexible at client level. Debian stable is rocky and desirable, but
there are many reasons that force for another choice. For example the
need of new drivers for new PC, or the need for a specific OS for some
devices that have specific software packages for another specific
distribution (I have such a case for whiteboards that have only
Ubuntu packages). Thus, I prepared compatibility packages educlient
and eduroaming, hoping not to use them ;-)&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I have a Debian Stable PDC at school (Kerberos, NIS, NFS) with
mixed Debian and Ubuntu clients. If you think that this triad
combination is exotic... well I discovered right yesterday that
&lt;a href=&quot;http://moo.nac.uci.edu/~hjm/Perceus-Report.html&quot;&gt;Perceus&lt;/a&gt;
has the same...&lt;/p&gt;

&lt;p&gt;For myself I run Debian wheezy/sid, but this combination is good
only I you have enough competence to fix stuff for yourself, if
something breaks.  Daily I use texmacs, gnumeric, a little bit of R
statistics, kmplot, and less frequently OpenOffice.org.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;P&gt;I think that the only real argument that school managers &quot;hear&quot; is
cost reduction. They don&#39;t give too much weight on quality, stability,
just because they are normally not open to change.&lt;/p&gt;

&lt;p&gt;Students adapts very quickly to GNU/Linux (and for them being able
to switch between different OS is a plus value); teachers and managers
don&#39;t.&lt;/p&gt;

&lt;p&gt;We decided to move to Linux because students at our school have own
laptop and we have the responsibility to keep the laptop ready to use;
we were really unsatisfied with Microsoft since every Monday we had 20
machine to fix for viral infections... With Linux this has been
reduced to zero, since people installs almost only from official
repositories. I think that our special needs brought us to Linux.
Those who don&#39;t have such needs will hardly move to Linux.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>IETF activity to standardise video codec</title>
                <link>http://people.skolelinux.org/pere/blog/IETF_activity_to_standardise_video_codec.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/IETF_activity_to_standardise_video_codec.html</guid>
                <pubDate>Sat, 15 Sep 2012 20:00:00 +0200</pubDate>
                <description>&lt;p&gt;After the
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/IETF_standardize_its_first_multimedia_codec__Opus.html&quot;&gt;Opus
codec made&lt;/a&gt; it into &lt;a href=&quot;http://www.ietf.org/&quot;&gt;IETF&lt;/a&gt; as
&lt;a href=&quot;http://tools.ietf.org/html/rfc6716&quot;&gt;RFC 6716&lt;/a&gt;, I had a look
to see if there is any activity in IETF to standardise a video codec
too, and I was happy to discover that there is some activity in this
area.  A non-&quot;working group&quot; mailing list
&lt;a href=&quot;https://www.ietf.org/mailman/listinfo/video-codec&quot;&gt;video-codec&lt;/a&gt;
was
&lt;a href=&quot;http://ietf.10.n7.nabble.com/New-Non-WG-Mailing-List-video-codec-Video-codec-BoF-discussion-list-td119548.html&quot;&gt;created 2012-08-20&lt;/a&gt;.  It is intended to discuss the topic and if a
formal working group should be formed.&lt;/p&gt;

&lt;p&gt;I look forward to see how this plays out.  There is already
&lt;a href=&quot;http://www.ietf.org/mail-archive/web/video-codec/current/msg00003.html&quot;&gt;an
email from someone&lt;/a&gt; in the MPEG group at ISO asking people to
participate in the ISO group.  Given how ISO failed with OOXML and given
that it so far (as far as I can remember) only have produced
multimedia formats requiring royalty payments, I suspect
joining the ISO group would be a complete waste of time, but I am not
involved in any codec work and my opinion will not matter much.&lt;/p&gt;

&lt;p&gt;If one of my readers is involved with codec work, I hope she will
join this work to standardise a royalty free video codec within
IETF.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>IETF standardize its first multimedia codec: Opus</title>
                <link>http://people.skolelinux.org/pere/blog/IETF_standardize_its_first_multimedia_codec__Opus.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/IETF_standardize_its_first_multimedia_codec__Opus.html</guid>
                <pubDate>Wed, 12 Sep 2012 13:50:00 +0200</pubDate>
                <description>&lt;p&gt;Yesterday, &lt;a href=&quot;http://www.ietf.org/&quot;&gt;IETF&lt;/a&gt; announced the
publication of of
&lt;a href=&quot;http://tools.ietf.org/html/rfc6716&quot;&gt;RFC 6716, the Definition
of the Opus Audio Codec&lt;/a&gt;, a low latency, variable bandwidth, codec
intended for both VoIP, film and music.  This is the first time, as
far as I know, that IETF have standardized a multimedia codec.  In
&lt;a href=&quot;http://tools.ietf.org/html/rfc3533&quot;&gt;RFC 3533&lt;/a&gt;, IETF
standardized the OGG container format, and it has proven to be a great
royalty free container for audio, video and movies.  I hope IETF will
continue to standardize more royalty free codeces, after ISO and MPEG
have proven incapable of securing everyone equal rights to publish
multimedia content on the Internet.&lt;/p&gt;

&lt;p&gt;IETF require two interoperating independent implementations to
ratify a standard, and have so far ensured to only standardize royalty
free specifications.  Both are key factors to allow everyone (rich and
poor), to compete on equal terms on the Internet.&lt;/p&gt;

&lt;p&gt;Visit the &lt;a href=&quot;http://opus-codec.org/&quot;&gt;Opus project page&lt;/a&gt; if
you want to learn more about the solution.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Git repository for song book for Computer Scientists</title>
                <link>http://people.skolelinux.org/pere/blog/Git_repository_for_song_book_for_Computer_Scientists.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Git_repository_for_song_book_for_Computer_Scientists.html</guid>
                <pubDate>Fri, 7 Sep 2012 13:50:00 +0200</pubDate>
                <description>&lt;p&gt;As I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Song_book_for_Computer_Scientists.html&quot;&gt;mentioned
this summer&lt;/a&gt;, I have created a Computer Science song book a few
years ago, and today I finally found time to create a public
&lt;a href=&quot;https://gitorious.org/pere-cs-songbook/pere-cs-songbook&quot;&gt;Gitorious
repository for the project&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;If you want to help out, please clone the source and submit patches
to the HTML version.  To generate the PDF and PostScript version,
please use prince XML, or let me know about a useful free software
processor capable of creating a good looking PDF from the HTML.&lt;/p&gt;

&lt;p&gt;Want to sing?  You can still find the song book in HTML, PDF and
PostScript formats at
&lt;a href=&quot;http://www.hungry.com/~pere/cs-songbook/&quot;&gt;Petter&#39;s Computer
Science Songbook&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Free software forced Microsoft to open Office (and don&#39;t forget Officeshots)</title>
                <link>http://people.skolelinux.org/pere/blog/Free_software_forced_Microsoft_to_open_Office__and_don_t_forget_Officeshots_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Free_software_forced_Microsoft_to_open_Office__and_don_t_forget_Officeshots_.html</guid>
                <pubDate>Thu, 23 Aug 2012 14:20:00 +0200</pubDate>
                <description>&lt;p&gt;I came across a great comment from Simon Phipps today, about how
&lt;a href=&quot;http://www.infoworld.com/d/open-source-software/how-microsoft-was-forced-open-office-200233&quot;&gt;Microsoft
have been forced to open Office&lt;/a&gt;, and it made me remember and
revisit the great site
&lt;a href=&quot;http://www.officeshots.org/&quot;&gt;officeshots&lt;/a&gt; which allow you
to check out how different programs present the ODF file format.  I
recommend both to those of my readers interested in ODF. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Half way there with translated docbook version of Free Culture</title>
                <link>http://people.skolelinux.org/pere/blog/Half_way_there_with_translated_docbook_version_of_Free_Culture.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Half_way_there_with_translated_docbook_version_of_Free_Culture.html</guid>
                <pubDate>Fri, 17 Aug 2012 21:50:00 +0200</pubDate>
                <description>&lt;p&gt;In my spare time, I currently work on a Norwegian
&lt;a href=&quot;http://www.docbook.org/&quot;&gt;docbook&lt;/a&gt; version of the 2004 book
&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt; by Lawrence Lessig,
to get a Norwegian text explaining the problems with the copyright law
I can give to my parents and others that are reluctant to read an
English book.  It is a marvellous set of examples on how the ever
expanding copyright regulations hurt culture and society.  When the
translation is done, I hope to find funding to print and ship a copy
to all the members of the Norwegian parliament, before they sit down
to debate the latest revisions to the Norwegian copyright law.  This
summer I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Dugnad_for___sende_norsk_versjon_av_Free_Culture_til_stortingets_representanter_.html&quot;&gt;called
for volunteers&lt;/a&gt; to help me, and I have been able to secure the
valuable contribution from at least one other Norwegian.&lt;/p&gt;

&lt;p&gt;Two days ago, we finally broke the 50% mark.  Then more than 50% of
the number of strings to translate (normally paragraphs, but also
titles and index entries are also counted).  All parts from the
beginning up to and including chapter four is translated.  So is
chapters six, seven and the conclusion.  I created a graph to show the
progress:&lt;/p&gt;

&lt;img width=&quot;80%&quot; align=&quot;center&quot; src=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/raw/master/progress.png&quot;&gt;

&lt;p&gt;The number of strings to translate increase as I insert the index
entries into the docbook.  They were missing with the docbook version
I initially started with.  There are still quite a few index entries
missing, but everyone starting with A, B, O, Z and Y are done.  I
currently focus on completing the index entries, to get a complete
english version of the docbook source.&lt;/p&gt;

&lt;p&gt;There is still need for translators and people with docbook
knowledge, to be able to get a good looking book (I still struggle
with dblatex, xmlto and docbook-xsl) as well as to do the draft
translation and proof reading.  And I would like the figures to be
redrawn as SVGs to make it easy to translate them.  Any SVG master
around?  I am sure there are some legal terms that are unfamiliar to
me.  If you want to help, please get in touch, and check out the
project files currently available from &lt;a
href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;If you are curious what the translated book currently look like,
the updated
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.pdf?raw=true&quot;&gt;PDF&lt;/a&gt;
and
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.epub?raw=true&quot;&gt;EPUB&lt;/a&gt;
are published on github.  The HTML version is published as well, but
github hand it out with MIME type text/plain, confusing browsers, so I
saw no point in linking to that version.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Notes on language codes for Norwegian docbook processing...</title>
                <link>http://people.skolelinux.org/pere/blog/Notes_on_language_codes_for_Norwegian_docbook_processing___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Notes_on_language_codes_for_Norwegian_docbook_processing___.html</guid>
                <pubDate>Fri, 10 Aug 2012 21:00:00 +0200</pubDate>
                <description>&lt;p&gt;In &lt;a href=&quot;http://www.docbook.org/&quot;&gt;docbook&lt;/a&gt; one can specify
the language used at the top, and the processing pipeline will use
this information to pick the correct translations for &#39;chapter&#39;, &#39;see
also&#39;, &#39;index&#39; etc.  And for most languages used with docbook, I guess
this work just fine.  For example a German user can start the document
with &amp;lt;book lang=&quot;de&quot;&amp;gt;, and the document will show up with the
correct content with any of the docbook processors.  This is not the
case for the language
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Free_Culture_in_Norwegian___5_chapters_done__74_percent_left_to_do.html&quot;&gt;I
am working with at the moment&lt;/a&gt;, Norwegian Bokmål.&lt;/p&gt;

&lt;p&gt;For a while, I was confused about which language code to use,
because I was unable to find any language code that would work across
all tools.  I am currently testing dblatex, xmlto, docbook-xsl, and
dbtoepub, and they do not handle Norwegian Bokmål the same way.  Some
of them do not handle it at all.&lt;/p&gt;

&lt;p&gt;A bit of background information is probably needed to understand
this mess.  Norwegian is not one, but two written variants.  The
variants are Norwegian Nynorsk and Norwegian Bokmål.  There are three
two letter language codes associated with these languages, Norwegian
is &#39;no&#39;, Norwegian Nynorsk is &#39;nn&#39; and Norwegian Bokmål is &#39;nb&#39;.
Historically the &#39;no&#39; language code was used for Norwegian Bokmål, but
many years ago this was found to be å bad idea, and the recommendation
is to use the most specific language code instead, to avoid confusion.
In the transition period it is a good idea to make sure &#39;no&#39; was an
alias for &#39;nb&#39;.&lt;/p&gt;

&lt;p&gt;Back to docbook processing tools in Debian.  The dblatex tool only
understand &#39;nn&#39;.  There are translations for &#39;no&#39;, but not &#39;nb&#39; (BTS
&lt;a href=&quot;http://bugs.debian.org/684391&quot;&gt;#684391&lt;/a&gt;), but due to a bug
(BTS &lt;a href=&quot;http://bugs.debian.org/682936&quot;&gt;#682936&lt;/a&gt;) the &#39;no&#39;
language code is not recognised.  The docbook-xsl tool chain only
recognise &#39;nn&#39; and &#39;nb&#39;, but not &#39;no&#39;.  The xmlto tool only recognise
&#39;nn&#39; and &#39;nb&#39;, but not &#39;no&#39;.  The end result that there is no language
code I can use to get the docbook file working with all of these tools
at the same time. :(&lt;/p&gt;

&lt;p&gt;The correct solution is to use &amp;lt;book lang=&quot;nb&quot;&amp;gt;, but it will
take time before that will work with all the free software docbook
processors. :(&lt;/p&gt;

&lt;p&gt;Oh, the joy of well integrated tools. :/&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Best way to create a docbook book?</title>
                <link>http://people.skolelinux.org/pere/blog/Best_way_to_create_a_docbook_book_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Best_way_to_create_a_docbook_book_.html</guid>
                <pubDate>Tue, 31 Jul 2012 22:00:00 +0200</pubDate>
                <description>&lt;p&gt;I tried to send this text to the
&lt;a href=&quot;https://lists.oasis-open.org/archives/docbook-apps/&quot;&gt;docbook-apps
mailing list at lists.oasis-open.org&lt;/a&gt;, but it only accept messages
from subscribers and rejected my post, and I completely lack the
bandwidth required to subscribe to another mailing list, so instead I
try to post my message here and hope my blog readers can help me
out.&lt;/p&gt;

&lt;p&gt;I am quite new to docbook processing, and am climbing a steep
learning curve at the moment.&lt;/p&gt;

&lt;p&gt;To give you some background, I am working on a Norwegian
translation of the book Free Culture by Lawrence Lessig, and I use
docbook to handle the process.  The files to build the book are
available from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;.
The book got around 400 pages with parts, images, footnotes, tables,
index entries etc, which has proven to be a challenge for the free
software docbook processors.  My build platform is Debian GNU/Linux
Squeeze.&lt;/p&gt;

&lt;p&gt;I want to build PDF, EPUB and HTML version of the book, and have
tried different tool chains to do the conversion from docbook to these
formats.  I am currently focusing on the PDF version, and have a few
problems.&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Using dblatex, the &amp;lt;part&amp;gt; handling is not the way I want to,
   as &amp;lt;/part&amp;gt; do not really end the &amp;lt;part&amp;gt;. (See
   &lt;a href=&quot;http://bugs.debian.org/683166&quot;&gt;BTS report #683166&lt;/a&gt;), the
   xetex backend (needed to process UTF-8) give incorrect hyphens in
   index references spanning several pages (See
   &lt;a href=&quot;http://bugs.debian.org/682901&quot;&gt;BTS report #682901&lt;/a&gt;), and
   I am unable to get the norwegian template texts (See
   &lt;a href=&quot;http://bugs.debian.org/682936&quot;&gt;BTS report #682936&lt;/a&gt;).&lt;/li&gt;

&lt;li&gt;Using straight xmlto fail with some latex error (See
   &lt;a href=&quot;http://bugs.debian.org/683163&quot;&gt;BTS report
   #683163&lt;/a&gt;).&lt;/li&gt;

&lt;li&gt;Using xmlto with the fop backend fail to handle images (do not
   show up in the PDF), fail to handle a long footnote (overlap
   footnote and text body, see
   &lt;a href=&quot;http://bugs.debian.org/683197&quot;&gt;BTS report #683197&lt;/a&gt;), and
   fail to create a correct index (some lack page ref, and the page
   refs listed are not right).&lt;/li&gt;

&lt;li&gt;Using xmlto with the dblatex backend behave like dblatex.&lt;/li&gt;

&lt;li&gt;Using docbook-xls with xsltproc + fop have the same footnote and
   index problems the xmlto + fop processing.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;So I wonder, what would be the best way to create the PDF version
of this book?  Are some of the bugs found above solved in new or
experimental versions of some docbook tool chain?&lt;/p&gt;

&lt;p&gt;What about HTML and EPUB versions?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Free Culture in Norwegian - 5 chapters done, 74 percent left to do</title>
                <link>http://people.skolelinux.org/pere/blog/Free_Culture_in_Norwegian___5_chapters_done__74_percent_left_to_do.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Free_Culture_in_Norwegian___5_chapters_done__74_percent_left_to_do.html</guid>
                <pubDate>Sat, 21 Jul 2012 20:00:00 +0200</pubDate>
                <description>&lt;p&gt;I reported earlier that I am working on
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Dugnad_for___sende_norsk_versjon_av_Free_Culture_til_stortingets_representanter_.html&quot;&gt;a
norwegian version&lt;/a&gt; of the book
&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt; by Lawrence Lessig.
Progress is good, and yesterday I got a major contribution from Anders
Hagen Jarmund completing chapter six.  The source files as well as a
PDF and EPUB version of this book are available from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I am happy to report that the draft for the first two chapters
(preface, introduction) is complete, and three other chapters are also
completely translated.  This completes 26 percent of the number of
strings (equivalent to paragraphs) in the book, and there is thus 74
percent left to translate.  A graph of the progress is present at the
bottom of the github project page.  There is still room for more
contributors.  Get in touch or send github pull requests with fixes if
you got time and are willing to help make this book make it to
print. :)&lt;/p&gt;

&lt;p&gt;The book translation framework could also be a good basis for other
translations, if you want the book to be available in your
language.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Call for help from docbook expert to tag Free Culture by Lawrence Lessig</title>
                <link>http://people.skolelinux.org/pere/blog/Call_for_help_from_docbook_expert_to_tag_Free_Culture_by_Lawrence_Lessig.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Call_for_help_from_docbook_expert_to_tag_Free_Culture_by_Lawrence_Lessig.html</guid>
                <pubDate>Mon, 16 Jul 2012 22:50:00 +0200</pubDate>
                <description>&lt;p&gt;I am currently working on a
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Dugnad_for___sende_norsk_versjon_av_Free_Culture_til_stortingets_representanter_.html&quot;&gt;project
to translate&lt;/a&gt; the book
&lt;a href=&quot;http://free-culture.cc/&quot;&gt;Free Culture&lt;/a&gt; by Lawrence Lessig
to Norwegian.  And the source we base our translation on is the
&lt;a href=&quot;http://en.wikipedia.org/wiki/DocBook&quot;&gt;docbook&lt;/a&gt; version, to
allow us to use po4a and .po files to handle the translation, and for
this to work well the docbook source document need to be properly
tagged.  The source files of this project is available from
&lt;a href=&quot;https://github.com/petterreinholdtsen/free-culture-lessig&quot;&gt;github&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The problem is that the docbook source have flaws, and we have
no-one involved in the project that is a docbook expert.  Is there a
docbook expert somewhere that is interested in helping us create a
well tagged docbook version of the book, and adjust our build process
for the PDF, EPUB and HTML version of the book?  This will provide a
well tagged English version (our source document), and make it a lot
easier for us to create a good Norwegian version.  If you can and want
to help, please get in touch with me or fork the github project and
send pull requests with fixes. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: George Bredberg</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__George_Bredberg.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__George_Bredberg.html</guid>
                <pubDate>Mon, 9 Jul 2012 00:30:00 +0200</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt; project have users all over the globe, but until
recently we have not known about any users in Norway&#39;s neighbour
country Sweden.  This changed when George Bredberg showed up in March
this year on the mailing list, asking interesting questions about how
to adjust and scale the just released
&lt;a href=&quot;http://www.debian.org/News/2012/20120311.html&quot;&gt;Debian Edu
Wheezy&lt;/a&gt; setup to his liking.  He granted me an interview, and I am
happy to share his answers with you here.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;m a 44 year old country guy that have been working 12 years at
the same school as 50% IT-manager and 50% Teacher. My educational
background is fil.kand in history and religious beliefs, an exam as a
&quot;folkhighschool&quot; teacher, that is, for teaching grownups.  In
Norwegian I believe it&#39;s called &quot;Vuxenupplaring&quot;. I also have a master
in &quot;Technology and social change&quot;. So I&#39;m not really a tech guy, I
just like to study how humans and technology interact and that is my
perspective when working with IT.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

I have followed the Skolelinux project for quite some time by
now. Earlier I tested out the K12-LTSP project, which we used for some
time, but I really like the idea of having a distribution aimed to be
a complete solution for schools with necessary tools integrated. When
K12-LTSP abandoned that idea some years ago, I started to look more
seriously into Skolelinux instead.

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

The big point of Skolelinux to me is that it is a complete
distribution, ready to install. It has LDAP-support, MS Windows
integration tools and so forth already configured, saving an
administrator a lot of time and headache. We were using another Linux
based thin-client system called Thinlinc, that has served us very
well. But that Skolelinux is based on VNC and LTSP, to me, is better
when it comes to the kind of multimedia used in schools. That is
showing videos from Youtube or educational TV. It is also easier to
mix thin clients with workstations, since the user settings will be the
same. In our VNC-based solution you had to &quot;beat around the bush&quot; by
setting up a second, hidden, home-directory for user settings for the
workstations, because they will be different from the ones used on the
thin clients. Skolelinux support for diskless workstations are very
convenient since a school today often need to use a class room
projector showing videos in full screen. That is easily done with a
small integrated media computer running as a diskless workstation. You
have only two installs to update and configure. One for the thin
clients and one for the workstations. Also saving a lot of time.  Our
old system was also based on Redhat and CentOS. They are both very
nice distributions, but they are sometimes painfully slow when it
comes to updating multimedia support and multimedia programs (even
such as Gimp), leaving us with a bit &quot;oldish&quot; applications. Debian is
quicker to update.

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Debian is a bit too quick when it comes to updating. As an example
we use old HP terminals as thinclients, and two times already this
year (2012) the updates you get from the repositories has stopped
sound from working with them.  It&#39;s a kernel/ALSA issue. So you have
to be more careful properly testing the updates before you run them in
a production environment. This has never happened with CentOS.&lt;/p&gt;

&lt;p&gt;I also would like to be able to set my own domain-settings at
install time.  In Skolelinux they are kind of hard coded into the
distribution, when it comes to LDAP and at least samba integration.
That is more a cosmetic/translation issue, and not a real problem.
Running MS Windows applications within the Skolelinux environment needs
to be better supported. That is, running them seamlessly via RDP, and
support for single-sign on.  That will make the transition to free
software easier, because you can keep the applications you really
need.  No support will make it impossible if you work in a school where
some applications can&#39;t be open source. As for us we really need to
run Adobe InDesign in our journalist classes.  We run a journalist
education, and is one of the very few non university ones that is ok:d
by Svenska journalistförbundet (Swedish journalist association).  Our
education gives the pupils the right of membership there, once they
are done.  This is important if you want to get a job.&lt;/p&gt;

&lt;p&gt;Adobe InDesign is the program most commonly used in newspapers and
magazines.  We used Quark Express before, but they seem to loose there
market to Adobe. The only &quot;equivalent&quot; to InDesign in the opensource
world is Scribus, and its not advanced enough. At least not according
to the teacher. I think it would be possible to use it, because they
are not supposed to learn a program, they are supposed to learn how to
edit and compile a newspaper.  But politically at our school we are not
there yet.  And Scribus lacks a lot of things you find i InDesign.&lt;/p&gt;

&lt;p&gt;We used even a windows program for sound editing when it comes to
the radio-journalist part. The year to come we are going to try
Audacity. That software has the same kind of limitations compared to
Adobe Audition, but that teacher is a bit more open minded. We have
tried Ardour also, but that instead is more like a music studio
program, not intended for the kind of editing taking place in a radio
studio. Its way to complex and the GUI is to scattered when you only
want to cut, make pass-overs, add extra channels and normalise.  Those
things you can do in Audacity, but its not as easy as in Audition. You
have to do more things manually with envelopes, and that is a bit old
fashion and timewasting. Its also harder to cut and move sound from
one channel to another, which is a thing that you do frequently
because you often find yourself needing to rearrange parts of the
sound file.&lt;/p&gt;

&lt;p&gt;So, I am not sure we will succeed in replacing even Audition, but we
will try.  The problem is the students have certain expectations when
they start an education towards a profession.  So the programs has to
look and feel professional.  Good thing with radio, there are many
programs out there, that radio studios use, so its not as standardised
as Newspaper editing. That means, it does not really matter what
program they learn, because once they start working they still have to
learn the program the studio uses, so instead focus has to be to learn
the editing part without to much focus on a specific software.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Myself I&#39;m running Linux Mint, or Ubuntu these days.  I use almost
only open source software, and preferably Linux based. When it comes
to most used applications its OpenOffice, and Firefox (of course ;)
)&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;To get schools to use free software there has to be good open
source software that are windows based, to ease the transition. But
it&#39;s also very important that the multimedia support is working
flawlessly.  The problems with Youtube, Twitter, Facebook and whatever
will create problems when it comes to both teachers and
students. Economy are also important for schools, so using thin
clients, as long as they have good multimedia support, is a very good
idea. It&#39;s also important that the open source software works even for
the administration.  It&#39;s hard to convince the teachers to stick with
open source, if the principal has to run Windows.  It also creates a
problem if some classes has to use Windows for there tasks, since that
will create a difference in &quot;status&quot; between classes, so a good
support for running windows applications via the thin client (Linux)
desktop is essential.  At least at our school, where we have mixed
level of educations, from high-school to journalist-school.&lt;/p&gt;

&lt;p&gt;Update 2012-07-09 08:30: Paul Wise tipped me on IRC about three
useful sources related to Free Software for radio stations: the LWN
article &lt;a href=&quot;https://lwn.net/Articles/481607/&quot;&gt;Radio station
management with Airtime&lt;/a&gt;,
&lt;a href=&quot;http://www.sourcefabric.org/en/airtime/&quot;&gt;Airtime&lt;/a&gt; which
claim to be a Free open source radio automation software and
&lt;a href=&quot;http://www.rivendellaudio.org/&quot;&gt;Rivendell&lt;/a&gt; which claim to
be complete radio broadcast automation solution.  All of them seem
useful to the aspiring radio producer.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Why do schools waste money on IT?</title>
                <link>http://people.skolelinux.org/pere/blog/Why_do_schools_waste_money_on_IT_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Why_do_schools_waste_money_on_IT_.html</guid>
                <pubDate>Sun, 8 Jul 2012 09:40:00 +0200</pubDate>
                <description>&lt;p&gt;In the Debian Edu / Skolelinux project, we have realised that one
of the major blockers for the project success is the purchasing skills
in schools and municipalities.  We provide what the happy users of
Debian Edu / Skolelinux say they need and to a lower cost than the
alternatives, and yet so few schools decide to use our solution.  I
was pleased to discover the same observation done by mySociety and Tom
Steinberg in his blog post
&quot;&lt;a href=&quot;http://www.mysociety.org/2012/06/19/can-you-recognize-the-million-pound-chair/&quot;&gt;Can
you recognize the million pound chair?&lt;/a&gt;&quot;.  Read it and weep for the
spending of your tax money.&lt;/p&gt;

&lt;p&gt;Of course there are other factors involved as well, like our
projects bad marketing skills and the Linux community fragmentation
causing worry with the people on the outside, so we as a project need
to keep working hard to gain users, but it is a up-hill battle when
public decision makers are unable to understand computer system
purchases.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Free Timetabling Software - nice free software</title>
                <link>http://people.skolelinux.org/pere/blog/Free_Timetabling_Software___nice_free_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Free_Timetabling_Software___nice_free_software.html</guid>
                <pubDate>Sat, 7 Jul 2012 09:50:00 +0200</pubDate>
                <description>&lt;p&gt;Included in &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt; is a large collection of end user and school specific
software.  It is one of the packages not installed by default but
provided in the Debian archive for schools to install if they want to,
is a system to automatically plan the school time table using
information about available teachers, classes and rooms, combined with
the list of required courses and how many hours each topic should
receive.  The software is

&lt;a href=&quot;http://lalescu.ro/liviu/fet/&quot;&gt;named FET&lt;/a&gt;, and it provide a
graphical user interface to input the required information, save the
result in a fairly simple XML format, and generate time tables for
both teachers and students.  It is available both for
&lt;a href=&quot;http://lalescu.ro/liviu/fet/download.html&quot;&gt;Linux, MacOSX and
Windows&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This is &lt;a href=&quot;http://lalescu.ro/liviu/fet/features.html&quot;&gt;the
feature list&lt;/a&gt;, liftet from the project web site:&lt;/p&gt;

&lt;p&gt;&lt;ul&gt;

  &lt;li&gt;FET is free software, licensed under the GNU GPL v2 or later.
    You can freely use, copy, modify and redistribute it &lt;/li&gt;
        
  &lt;li&gt;Localized to en_US (US English, default), ar (Arabic), ca
    (Catalan), da (Danish), de (German), el (Greek), es (Spanish), fa
    (Persian), fr (French), gl (Galician), he (Hebrew), hu
    (Hungarian), id (Indonesian), it (Italian), lt (Lithuanian), mk
    (Macedonian), ms (Malay), nl (Dutch), pl (Polish), pt_BR
    (Brazilian Portuguese), ro (Romanian), ru (Russian), si (Sinhala),
    sk (Slovak), sr (Serbian), tr (Turkish), uk (Ukrainian), uz
    (Uzbek) and vi (Vietnamese) (incompletely for some languages)
    &lt;/li&gt;
        
  &lt;li&gt;Fully automatic generation algorithm, allowing also
    semi-automatic or manual allocation&lt;/li&gt;
        
  &lt;li&gt;Platform independent implementation, allowing running on
    GNU/Linux, Windows, Mac and any system that Qt supports &lt;/li&gt;
        
  &lt;li&gt;Flexible modular XML format for the input file, allowing editing
    with an XML editor or by hand (besides FET interface)&lt;/li&gt;
        
  &lt;li&gt;Import/export from CSV format&lt;/li&gt;
        
  &lt;li&gt;The resulted timetables are exported into HTML, XML and CSV
    formats &lt;/li&gt;
        
  &lt;li&gt;Flexible students structure, organized into sets: years, groups
    and subgroups. FET allows overlapping years and groups and
    non-overlapping subgroups. You can even define individual students
    (as separate sets)&lt;/li&gt;
        
  &lt;li&gt;Each constraint has a weight percentage, from 0.0% to 100.0%
    (but some special constraints are allowed to have only 100% weight
    percentage)&lt;/li&gt;
        
  &lt;li&gt;Limits for the algorithm (all these limits can be increased on
    demand, as a custom version, because this would require a bit more
    memory):
    &lt;ul&gt;
      &lt;li&gt;Maximum total number of hours (periods) per day: 60&lt;/li&gt;
      &lt;li&gt;Maximum number of working days per week: 35&lt;/li&gt;
      &lt;li&gt;Maximum total number of teachers: 6000&lt;/li&gt;
      &lt;li&gt;Maximum total number of sets of students: 30000&lt;/li&gt;
      &lt;li&gt;Maximum total number of subjects: 6000&lt;/li&gt;
      &lt;li&gt;Virtually unlimited number of activity tags&lt;/li&gt;
      &lt;li&gt;Maximum number of activities: 30000&lt;/li&gt;
      &lt;li&gt;Maximum number of rooms: 6000&lt;/li&gt;
      &lt;li&gt;Maximum number of buildings: 6000&lt;/li&gt;
      &lt;li&gt;Possibility of adding multiple teachers and
          students sets for each activity.  (it is possible
          also to have no teachers or no students sets for an
          activity)&lt;/li&gt;
      &lt;li&gt;Virtually unlimited number of time constraints&lt;/li&gt;
      &lt;li&gt;Virtually unlimited number of space constraints&lt;/li&gt;
    &lt;/ul&gt;&lt;/li&gt;

  &lt;li&gt;A large and flexible palette of time constraints:
    &lt;ul&gt;
      &lt;li&gt;Break periods&lt;/li&gt;
      &lt;li&gt;For teacher(s):
        &lt;ul&gt;
          &lt;li&gt;Not available periods&lt;/li&gt;
          &lt;li&gt;Max/min days per week&lt;/li&gt;
          &lt;li&gt;Max gaps per day/week&lt;/li&gt;
          &lt;li&gt;Max hours daily/continuously&lt;/li&gt;
          &lt;li&gt;Min hours daily&lt;/li&gt;
          &lt;li&gt;Max hours daily/continuously with an activity tag&lt;/li&gt;

          &lt;li&gt;Respect working in an hourly interval a max number of
            days per week&lt;/li&gt;
        &lt;/ul&gt;&lt;/li&gt;
      &lt;li&gt;For students (sets):
        &lt;ul&gt;
          &lt;li&gt;Not available periods&lt;/li&gt;
          &lt;li&gt;Begins early (specify max allowed beginnings at second hour)&lt;/li&gt;
          &lt;li&gt;Max gaps per day/week&lt;/li&gt;
          &lt;li&gt;Max hours daily/continuously&lt;/li&gt;
          &lt;li&gt;Min hours daily&lt;/li&gt;
          &lt;li&gt;Max hours daily/continuously with an activity tag&lt;/li&gt;

          &lt;li&gt;Respect working in an hourly interval a max number of
            days per week&lt;/li&gt;
        &lt;/ul&gt;&lt;/li&gt;
      &lt;li&gt;For an activity or a set of activities/subactivities:
        &lt;ul&gt;
          &lt;li&gt;A single preferred starting time&lt;/li&gt;
          &lt;li&gt;A set of preferred starting times&lt;/li&gt;
          &lt;li&gt;A set of preferred time slots&lt;/li&gt;
          &lt;li&gt;Min/max days between them&lt;/li&gt;
          &lt;li&gt;End(s) students day&lt;/li&gt;
          &lt;li&gt;Same starting time/day/hour&lt;/li&gt;
          &lt;li&gt;Occupy max time slots from selection (a complex and
            flexible constraint, useful in many situations)&lt;/li&gt;
          &lt;li&gt;Consecutive, ordered, grouped (for 2 or 3 (sub)activities)&lt;/li&gt;
          &lt;li&gt;Not overlapping&lt;/li&gt;
          &lt;li&gt;Max simultaneous in selected time slots&lt;/li&gt;
          &lt;li&gt;Min gaps between a set of (sub)activities&lt;/li&gt;
        &lt;/ul&gt;&lt;/li&gt;
    &lt;/ul&gt;&lt;/li&gt;

  &lt;li&gt;A large and flexible palette of space constraints:
    &lt;ul&gt;
      &lt;li&gt;Room not available periods&lt;/li&gt;
      &lt;li&gt;For teacher(s):
        &lt;ul&gt;
          &lt;li&gt;Home room(s)&lt;/li&gt;
          &lt;li&gt;Max building changes per day/week&lt;/li&gt;
          &lt;li&gt;Min gaps between building changes&lt;/li&gt;
        &lt;/ul&gt;
      &lt;/li&gt;
                
      &lt;li&gt;For students (sets):
        &lt;ul&gt;
          &lt;li&gt;Home room(s)&lt;/li&gt;
          &lt;li&gt;Max building changes per day/week&lt;/li&gt;
          &lt;li&gt;Min gaps between building changes&lt;/li&gt;
        &lt;/ul&gt;
      &lt;/li&gt;
      &lt;li&gt;Preferred room(s):
        &lt;ul&gt;
          &lt;li&gt;For a subject&lt;/li&gt;
          &lt;li&gt;For an activity tag&lt;/li&gt;
          &lt;li&gt;For a subject and an activity tag&lt;/li&gt;
          &lt;li&gt;Individually for a (sub)activity&lt;/li&gt;
        &lt;/ul&gt;
      &lt;/li&gt;

      &lt;li&gt;For a set of activities:
        &lt;ul&gt;
          &lt;li&gt;Occupy a maximum number of different rooms&lt;/li&gt;
        &lt;/ul&gt;
      &lt;/li&gt;
    &lt;/ul&gt;
  &lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;

&lt;p&gt;I have not used it myself, as I am not involved in time table
planning at a school, but it seem to work fine when I test it.  If you
need to set up your schools time table, and is tired of doing it
manually, check it out. 

A quick summary on how to use it can be found in
&lt;a href=&quot;http://marvelsoft.co.in/wp/2012/03/generate-timetable-for-state-cbse-icse-igcse-schools-free/&quot;&gt;a
blog post from MarvelSoft&lt;/a&gt;.  If you find FET useful, please provide
a recipe for the Debian Edu project in the
&lt;a href=&quot;http://wiki.debian.org/DebianEdu#Howtos&quot;&gt;Debian Edu HowTo
section&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Can Zimbra be told to send autoreplies to the From: address?</title>
                <link>http://people.skolelinux.org/pere/blog/Can_Zimbra_be_told_to_send_autoreplies_to_the_From__address_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Can_Zimbra_be_told_to_send_autoreplies_to_the_From__address_.html</guid>
                <pubDate>Tue, 3 Jul 2012 23:30:00 +0200</pubDate>
                <description>&lt;p&gt;In the NUUG &lt;a href=&quot;http://www.fiksgatami.no/&quot;&gt;FiksGataMi&lt;/a&gt;
project (Norwegian version of
&lt;a href=&quot;http://www.fixmystreet.com/&quot;&gt;FixMyStreet&lt;/a&gt; from
&lt;a href=&quot;http://www.mysociety.org/&quot;&gt;mySociety&lt;/a&gt;), we have discovered
a problem with the municipalities using
&lt;a href=&quot;http://www.zimbra.com/&quot;&gt;Zimbra&lt;/a&gt;.  When FiksGataMi send a
problem report to the government, the email From: address is set to
the address of the person reporting the problem, while envelope sender
is set to the FiksGataMi contact address.  The intention is to make
sure the municipality send any replies to the person reporting the
problem, while any email delivery problems are sent to us in NUUG.
This work well in most cases, but not for Karmøy municipality using
Zimbra.  Karmøy is using the vacation message function in Zimbra to
send an automatic reply to report that the message has been received,
and this message is sent to the envelope sender and not the address in
the From: header.&lt;/p&gt;

&lt;p&gt;This causes the automatic message from Karmøy to go to NUUGs
request-tracker instance instead of to the person reporting the
problem.  We can not really change the envelope sender address, as
this would make it impossible for us to discover when there are
problems with the MTAs receiving problem reports.  We have been in
contact with the people at Karmøy municipality, and they are willing
to adjust Zimbra if something can be changed there to get a better
behaviour.&lt;/p&gt;

&lt;p&gt;The default behaviour of Zimbra is as far as I can tell according
to the specification in RFC 3834, which recommend that vacation
messages are sent to the envelope sender and not to the From: address.
But I wonder if it is possible to adjust or configure Zimbra to behave
differently.  Anyone know?  Please let us know at
&lt;a href=&quot;http://lists.nuug.no/mailman/listinfo/fiksgatami&quot;&gt;fiksgatami
(at) nuug.no&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: José Luis Redrejo Rodríguez</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Jos__Luis_Redrejo_Rodr_guez.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Jos__Luis_Redrejo_Rodr_guez.html</guid>
                <pubDate>Tue, 26 Jun 2012 08:30:00 +0200</pubDate>
                <description>&lt;p&gt;I&#39;ve been too busy at home, but finally I found time to wrap up
another interview with the people behind
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt;.
This time we get to know José Luis Redrejo Rodríguez, one of our great
helpers from Spain.  His effort was the reason we added support for
several desktop types (KDE, Gnome and most recently LXDE) in Debian
Edu, and have all of these available in the recently published
&lt;a href=&quot;http://www.debian.org/News/2012/20120311.html&quot;&gt;Debian Edu
Squeeze&lt;/a&gt; version.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;m a father, teacher and engineer who is working for the Education
ministry of the Region of Extremadura (Spain) in the implementation of
ICT in schools&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;At 2006, I verified that both, we in Extremadura and Skolelinux
project, had been working in parallel for some years, doing very
similar things, using very similar tools and with similar targets, so
I decided it was time to join forces as much as possible.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;A community of highly skilled experts working together, with a
really open schema of collaboration and work. I really love the
concepts of Do-ocracy and Merit-ocracy and the way these concepts are
been used everyday inside Debian Edu.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Sometimes the differences in the implementations, laws or
economical and technical resources in the different countries don&#39;t
allow us to agree in the same solution for all of us, and several
approaches are needed, what is a waste of effort. Also, there is a
lack of more man power to be able to follow the fast evolution of the
technologies in school.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Debian, of course, and due to my kind of job I am most of my time
between Iceweasel, &lt;a href=&quot;http://www.geany.org/&quot;&gt;Geany&lt;/a&gt; and
&lt;a href=&quot;http://www.ohloh.net/p/gnome-terminator&quot;&gt;Terminator&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I think there is not a single strategy because there are very
different scenarios: schools with mixed proprietary and free
environments, schools using only workstations, other schools using
laptops, netbooks, tablets, interactive white-boards, etc.&lt;/p&gt;

&lt;p&gt;Also the range of ages of the students is very broad and you can
not use the same solutions for primary schools and secondary or even
universities. So different strategies are needed.&lt;/p&gt;

&lt;p&gt;But, looking at these differences, and looking back to the things
we&#39;ve done and implemented, and the places were we have spent most of
our forces, I think we should focus as much as possible in free
multi-platform environments, using only standards tools, and moving
more and more to Internet or network solutions that could be deployed
using wireless. I think we&#39;ll see more and more personal devices in
the schools, devices the students and teachers will take home with
them, so the solutions must be able to be taken at home and continue
working there.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Song book for Computer Scientists</title>
                <link>http://people.skolelinux.org/pere/blog/Song_book_for_Computer_Scientists.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Song_book_for_Computer_Scientists.html</guid>
                <pubDate>Sun, 24 Jun 2012 13:30:00 +0200</pubDate>
                <description>&lt;p&gt;Many years ago, while studying Computer Science at the
&lt;a href=&quot;http://www.uit.no/&quot;&gt;University of Tromsø&lt;/a&gt;, I started
collecting computer related songs for use at parties.  The original
version was written in LaTeX, but a few years ago I got help from
Håkon W. Lie, one of the inventors of W3C CSS, to convert it to HTML
while keeping the ability to create a nice book in PDF format.  I have
not had time to maintain the book for a while now, and guess I should
put it up on some public version control repository where others can
help me extend and update the book.  If anyone is volunteering to help
me with this, send me an email.  Also let me know if there are songs
missing in my book.&lt;/p&gt;

&lt;p&gt;I have not mentioned the book on my blog so far, and it occured to
me today that I really should let all my readers share the joys of
singing out load about programming, computers and computer networks.
Especially now that &lt;a href=&quot;http://debconf12.debconf.org/&quot;&gt;Debconf
12&lt;/a&gt; is about to start (and I am not going).  Want to sing?  Check
out &lt;a href=&quot;http://www.hungry.com/~pere/cs-songbook/&quot;&gt;Petter&#39;s
Computer Science Songbook&lt;/a&gt;.
</description>
        </item>
        
        <item>
                <title>Debian Edu - some ideas for the future versions</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu___some_ideas_for_the_future_versions.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu___some_ideas_for_the_future_versions.html</guid>
                <pubDate>Mon, 11 Jun 2012 14:30:00 +0200</pubDate>
                <description>&lt;p&gt;During my work on
&lt;a href=&quot;http://www.debian.org/News/2012/20120311.nb.html&quot;&gt;Debian Edu
based on Squeeze&lt;/a&gt;, I came across some issues that should be
addressed in the Wheezy release.  I finally found time to wrap up my
notes and provide quick summary of what I found, with a bit
explanation.&lt;/p&gt;

&lt;p&gt;&lt;ul&gt;

&lt;li&gt;We need to rewrite our package installation framework, as tasksel
changed from using tasksel tasks to using meta packages (aka packages
with dependencies like our education-* packages), and our installation
system depend on tasksel tasks in
/usr/share/tasksel/debian-edu-tasks.desc for package
installation.&lt;/li&gt;

&lt;li&gt;Enable Kerberos login for more services.  Now with the Kerberos
foundation in place, we should use it to get single sign on with more
services, and avoiding unneeded password / login questions.  We should
at least try to enable it for these services:
&lt;ul&gt;

  &lt;li&gt;CUPS for admins to add/configure printers and users when using
    quotas.&lt;/li&gt;
  &lt;li&gt;Nagios for admins checking the system status.&lt;/li&gt;
  &lt;li&gt;GOsa for admins updating LDAP and users changing their passwords.&lt;/li&gt;
  &lt;li&gt;LDAP for admins updating LDAP.&lt;/li&gt;
  &lt;li&gt;Squid for users when exam mode / filtering is active.&lt;/li&gt;
  &lt;li&gt;ssh for admins and users to save a password prompt.&lt;/li&gt;

&lt;/ul&gt;&lt;/li&gt;

&lt;li&gt;When we move GOsa to use Kerberos instead of LDAP bind to
authenticate users, we should try to block or at least limit access to
use LDAP bind for authentication, to ensure Kerberos is used when it
is intended, and nothing fall back to using the less safe LDAP bind&lt;/li&gt;

&lt;li&gt;Merge debian-edu-config and debian-edu-install.  The split made
sense when d-e-install did a lot more, but these days it is just an
inconvenience when we update the debconf preseeding values.&lt;/li&gt;

&lt;li&gt;Fix partman-auto to allow us to abort the installation before
touching the disk if the disk is too small.  This is
&lt;a href=&quot;http://bugs.debian.org/653305&quot;&gt;BTS report #653305&lt;/a&gt; and the
d-i developers are fine with the patch and someone just need to apply
it and upload.  After this is done we need to adjust
debian-edu-install to use this new hook.&lt;/li&gt;

&lt;li&gt;Adjust to new LTSP framework (boot time config instead of install
time config).  LTSP changed its design, and our hooks to install
packages and update the configuration is most likely not going to work
in Wheezy.

&lt;li&gt;Consider switching to NBD instead of NFS for LTSP root, to allow
the Kernel to cache files in its normal file cache, possibly speeding
up KDE login on slow networks.&lt;/li&gt;

&lt;li&gt;Make it possible to create expired user passwords that need to
change on first login.  This is useful when handing out password on
paper, to make sure only the user know the password.  This require
fixes to the PAM handling of kdm and gdm.&lt;/li&gt;

&lt;li&gt;Make GUI for adding new machines automatically from sitesummary.
The current command line script is not very friendly to people most
familiar with GUIs.  This should probably be integrated into GOsa to
have it available where the admin will be looking for it..&lt;/li&gt;

&lt;li&gt;We should find way for Nagios to check that the DHCP service
actually is working (as in handling out IP addresses).  None of the
Nagios checks I have found so far have been working for me.&lt;/li&gt;

&lt;li&gt;We should switch from libpam-nss-ldapd to sssd for all profiles
using LDAP, and not only on for roaming workstations, to have less
packages to configure and consistent setup across all profiles.&lt;/li&gt;

&lt;li&gt;We should configure Kerberos to update LDAP and Samba password
when changing password using the Kerberos protocol.  The hook was
requested in &lt;a href=&quot;http://bugs.debian.org/588968&quot;&gt;BTS report
#588968&lt;/a&gt; and is now available in Wheezy.  We might need to write a
MIT Kerberos plugin in C to get this.&lt;/li&gt;

&lt;li&gt;We should clean up the set of applications installed by default.
&lt;ul&gt;

&lt;li&gt;reduce the number of chemistry visualisers&lt;/li&gt;
&lt;li&gt;consider dropping xpaint&lt;/li&gt;
&lt;li&gt;and probably more?&lt;/li&gt;
&lt;/ul&gt;&lt;/li&gt;

&lt;li&gt;Some hardware need external firmware to work properly.  This is
mostly the case for WiFi network cards, but there are some other
examples too.  For popular laptops to work out of the box, such
firmware need to be installed from non-free, and we should provide
some GUI to do this.  Ubuntu already have this implemented, and we
could consider using their packages.  At the moment we have some
command line script to do this (one for the running system, another
for the LTSP chroot).&lt;/li&gt;


&lt;li&gt;In Squeeze, we provide KDE, Gnome and LXDE as desktop options.  We
should extend the list to Xfce and Sugar, and preferably find a way to
install several and allow the admin or the user to select which one to
use.&lt;/li&gt;

&lt;li&gt;The golearn tool from the goplay package make it easy to check out
interesting educational packages.  We should work on the package
tagging in Debian to ensure it represent all the useful educational
packages, and extend the tool to allow it to use packagekit to install
new applications with a simple mouse click.&lt;/li&gt;

&lt;li&gt;The Squeeze version got half a exam solution already in place,
with the introduction of iptable based network blocking, but for it to
be a complete exam solution the Squid proxy need to enable
filtering/blocking as well when the exam mode is enabled.  We should
implement a way to easily enable this for the schools that want it,
instead of the &quot;it is documented&quot; method of today.&lt;/li&gt;

&lt;li&gt;A feature used in several schools is the ability for a teacher to
&quot;take over&quot; the desktop of individual or all computers in the room.
There are at least three implementations,
&lt;a href=&quot;italc.sourceforge.net/&quot;&gt;italc&lt;/a&gt;,
&lt;a href=&quot;http://www.itais.net/help/en/&quot;&gt;controlaula&lt;/a&gt; og
&lt;a href=&quot;http://www.epoptes.org/&quot;&gt;epoptes&lt;/a&gt; and we should pick one of
them and make it trivial to set it up in a school.  The challenges is
how to distribute crypto keys and how to group computers in one room
and how to set up which machine/user can control the machines in a
given room.&lt;/li&gt;

&lt;li&gt;Tablets and surf boards are getting more and more popular, and we
should look into providing a good solution for integrating these into
the Debian Edu network.  Not quite sure how.  Perhaps we should
provide a installation profile with better touch screen support for
them, or add some sync services to allow them to exchange
configuration and data with the central server.  This should be
investigated.&lt;/li&gt;

&lt;/ul&gt;&lt;/p&gt;

&lt;p&gt;I guess we will discover more as we continue to work on the Wheezy
version.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>TV with face recognition, for improved viewer experience</title>
                <link>http://people.skolelinux.org/pere/blog/TV_with_face_recognition__for_improved_viewer_experience.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/TV_with_face_recognition__for_improved_viewer_experience.html</guid>
                <pubDate>Sat, 9 Jun 2012 22:00:00 +0200</pubDate>
                <description>&lt;p&gt;Slashdot got a story about Intel planning a
&lt;a href=&quot;http://entertainment.slashdot.org/story/12/06/09/0012247/intel-to-launch-tv-service-with-facial-recognition-by-end-of-the-year&quot;&gt;TV
with face recognition&lt;/a&gt; to recognise the viewer, and it occurred to
me that it would be more interesting to turn it around, and do face
recognition on the TV image itself.  It could let the viewer know who
is present on the screen, and perhaps look up their credibility,
company affiliation, previous appearances etc for the viewer to better
evaluate what is being said and done.  That would be a feature I would
be willing to pay for.&lt;/p&gt;

&lt;p&gt;I would not be willing to pay for a TV that point a camera on my
household, like the big brother feature apparently proposed by Intel.
It is the telescreen idea fetched straight out of the book
&lt;a href=&quot;http://gutenberg.net.au/ebooks01/0100021.txt&quot;&gt;1984 by George
Orwell&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Web service to look up HP and Dell computer hardware support status</title>
                <link>http://people.skolelinux.org/pere/blog/Web_service_to_look_up_HP_and_Dell_computer_hardware_support_status.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Web_service_to_look_up_HP_and_Dell_computer_hardware_support_status.html</guid>
                <pubDate>Wed, 6 Jun 2012 23:15:00 +0200</pubDate>
                <description>&lt;p&gt;A few days ago
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/SOAP_based_webservice_from_Dell_to_check_server_support_status.html&quot;&gt;I
reported how to get&lt;/a&gt; the support status out of Dell using an
unofficial and undocumented SOAP API, which I since have found out was
&lt;a href=&quot;http://lists.us.dell.com/pipermail/linux-poweredge/2012-February/045959.html&quot;&gt;discovered
by Daniel De Marco in february&lt;/a&gt;.  Combined with my web scraping
code for HP, Dell and IBM
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Checking_server_hardware_support_status_for_Dell__HP_and_IBM_servers.html&quot;&gt;from
2009&lt;/a&gt;, I got inspired and wrote
&lt;a href=&quot;https://views.scraperwiki.com/run/computer-hardware-support-status/&quot;&gt;a
web service&lt;/a&gt; based on Scraperwiki to make it easy to look up the
support status and get a machine readable result back.&lt;/p&gt;

&lt;p&gt;This is what it look like at the moment when asking for the JSON
output:

&lt;blockquote&gt;&lt;pre&gt;
% GET &lt;a href=&quot;https://views.scraperwiki.com/run/computer-hardware-support-status/?format=json&amp;vendor=Dell&amp;servicetag=2v1xwn1&quot;&gt;https://views.scraperwiki.com/run/computer-hardware-support-status/?format=json&amp;vendor=Dell&amp;servicetag=2v1xwn1&lt;/a&gt;
supportstatus({&quot;servicetag&quot;: &quot;2v1xwn1&quot;, &quot;warrantyend&quot;: &quot;2013-11-24&quot;, &quot;shipped&quot;: &quot;2010-11-24&quot;, &quot;scrapestamputc&quot;: &quot;2012-06-06T20:26:56.965847&quot;, &quot;scrapedurl&quot;: &quot;http://143.166.84.118/services/assetservice.asmx?WSDL&quot;, &quot;vendor&quot;: &quot;Dell&quot;, &quot;productid&quot;: &quot;&quot;})
%
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;It currently support Dell and HP, and I am hoping for help to add
support for other vendors.  The python source is available on
Scraperwiki and I welcome help with adding more features.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Mike Gabriel</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Mike_Gabriel.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Mike_Gabriel.html</guid>
                <pubDate>Sat, 2 Jun 2012 15:00:00 +0200</pubDate>
                <description>&lt;p&gt;Back in 2010, Mike Gabriel showed up on the
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt;
mailing list.  He quickly proved to be a valuable developer, and
thanks to his tireless effort we now have Kerberos integrated into the
&lt;a href=&quot;http://www.debian.org/News/2012/20120311.html&quot;&gt;Debian Edu
Squeeze&lt;/a&gt; version.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My name is Mike Gabriel, I am 38 years old and live near Kiel,
Schleswig-Holstein, Germany. I live together with a wonderful partner
(Angela Fuß) and two own children and two bonus children (contributed
by Angela).&lt;/p&gt;

&lt;p&gt;During the day I am part-time employed as a system administrator
and part-time working as an IT consultant. The consultancy work
touches free software topics wherever and whenever possible. During
the nights I am a free software developer. In the gaps I also train in
becoming an osteopath.&lt;/p&gt;

&lt;p&gt;Starting in 2010 we (Andreas Buchholz, Angela Fuß, Mike Gabriel)
have set up a free software project in the area of Kiel that aims at
introducing free software into schools. The project&#39;s name is
&quot;IT-Zukunft Schule&quot; (IT future for schools). The project links IT
skills with communication skills.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;While preparing our own customised Linux distribution for
&quot;IT-Zukunft Schule&quot; we were repeatedly asked if we really wanted to
reinvent the wheel. What schools really need is already available,
people said.  From this impulse we started evaluating other Linux
distributions that target being used for school networks.&lt;/p&gt;

&lt;p&gt;At the end we short-listed two approaches and compared them: a
commercial Linux distribution developed by a company in Bremen,
Germany, and Skolelinux / Debian Edu. Between 12/2010 and 03/2011 we
went to several events and met people being responsible for marketing
and development of either of the distributions. Skolelinux / Debian
Edu was by far much more convincing compared to the other product that
got short-listed beforehand--across the full spectrum. What was most
attractive for me personally: the perspective of collaboration within
the developmental branch of the Debian Edu project itself.&lt;/p&gt;

&lt;p&gt;In parallel with this, we talked to many local and not-so-local
people.  People teaching at schools, headmasters, politicians, data
protection experts, other IT professionals.&lt;/p&gt;

&lt;p&gt;We came to two conclusions:&lt;/p&gt;

&lt;p&gt;First, a technical conclusion: What schools need is available in
bits and pieces here and there, and none of the solutions really fit
by 100%. Any school we have seen has a very individual IT setup
whereas most of each school&#39;s requirements could mapped by a standard
IT solution.  The requirement to this IT solution is flexibility and
customisability, so that individual adaptations here and there are
possible.  In terms of re-distributing and rolling out such a
standardised IT system for schools (a system that is still to some
degree customisable) there is still a lot of work to do here
locally. Debian Edu / Skolelinux has been our choice as the starting
point.&lt;/p&gt;

&lt;p&gt;Second, a holistic conclusion: What schools need does not exist at
all (or we missed it so far). There are several technical solutions
for handling IT at schools that tend to make a good impression. What
has been missing completely here in Germany, though, is the enrolment
of people into using IT and teaching with IT. &quot;IT-Zukunft Schule&quot;
tries to provide an approach for this.&lt;/p&gt;

&lt;p&gt;Only some schools have some sort of a media concept which explains,
defines and gives guidance on how to use IT in class. Most schools in
Northern Germany do not have an IT service provider, the school&#39;s IT
equipment is managed by one or (if the school is lucky) two (admin)
teachers, most of the workload these admin teachers get done in there
spare time.&lt;/p&gt;

&lt;p&gt;We were surprised that only a very few admin teachers were
networked with colleagues from other schools. Basically, every school
here around has its individual approach of providing IT equipment to
teachers and students and the exchange of ideas has been quasi
non-existent until 2010/2011.&lt;/p&gt;

&lt;p&gt;Quite some (non-admin) teachers try to avoid using IT technology in
class as a learning medium completely. Several reasons for this
avoidance do exist.&lt;/p&gt;

&lt;p&gt;We discovered that no-one has ever taken a closer look at this
social part of IT management in schools, so far. On our quest journey
for a technical IT solution for schools, we discussed this issue with
several teachers, headmasters, politicians, other IT professionals and
they all confirmed: a holistic approach of considering IT management
at schools, an approach that includes the people in place, will be new
and probably a gain for all.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;There is a list of advantages: international context, openness to
any kind of contributions, do-ocracy policy, the closeness to Debian,
the different installation scenarios possible (from stand-alone
workstation to complex multi-server sites), the transparency within
project communication, honest communication within the group of
developers, etc.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Every coin has two sides:&lt;/p&gt;

&lt;p&gt;Technically: &lt;a href=&quot;http://bugs.debian.org/311188&quot;&gt;BTS issue
#311188&lt;/a&gt;, tricky upgradability of a Debian Edu main server, network
client installations on top of a plain vanilla Debian installation
should become possible sometime in the near future, one could think
about splitting the very complex package debian-edu-config into
several portions (to make it easier for new developers to
contribute).&lt;/p&gt;

&lt;p&gt;Another issue I see is that we (as Debian Edu developers) should
find out more about the network of people who do the marketing for
Debian Edu / Skolelinux. There is a very active group in Germany
promoting Skolelinux on the bigger Linux Days within Germany. Are
there other groups like that in other countries? How can we bring
these marketing people together (marketing group A with group B and
all of them with the group of Debian Edu developers)? During the last
meeting of the German Skolelinux group, I got the impression of people
there being rather disconnected from the development department of
Debian Edu / Skolelinux.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;For my daily business, I do not use commercial software at all.&lt;/p&gt;

&lt;p&gt;For normal stuff I use Iceweasel/Firefox, Libreoffice.org. For
serious text writing I prefer LaTeX. I use gimp, inkscape, scribus for
more artistic tasks. I run virtual machines in KVM and Virtualbox.&lt;/p&gt;

&lt;p&gt;I am one of the upstream developers of X2Go. In 2010 I started the
development of a Python based X2Go Client, called PyHoca-GUI.
PyHoca-GUI has brought forth a Python X2Go Client API that currently
is being integrated in Ubuntu&#39;s software center.&lt;/p&gt;

&lt;p&gt;For communications I have my own Kolab server running using Horde
as web-based groupware client. For IRC I love to use irssi, for Jabber
I have several clients that I use, mostly pidgin, though. I am also
the Debian maintainer of Coccinella, a Jabber-based interactive
whiteboard.&lt;/p&gt;

&lt;p&gt;My favourite terminal emulator is KDE&#39;s Yakuake.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Communicate, communicate, communicate. Enrol people, enrol people,
enrol people.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>SOAP based webservice from Dell to check server support status</title>
                <link>http://people.skolelinux.org/pere/blog/SOAP_based_webservice_from_Dell_to_check_server_support_status.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/SOAP_based_webservice_from_Dell_to_check_server_support_status.html</guid>
                <pubDate>Fri, 1 Jun 2012 15:20:00 +0200</pubDate>
                <description>&lt;p&gt;A few years ago I wrote
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Checking_server_hardware_support_status_for_Dell__HP_and_IBM_servers.html&quot;&gt;how
to extract support status&lt;/a&gt; for your Dell and HP servers.  Recently
I have learned from colleges here at the
&lt;a href=&quot;http://www.uio.no/&quot;&gt;University of Oslo&lt;/a&gt; that Dell have
made this even easier, by providing a SOAP based web service.  Given
the service tag, one can now query the Dell servers and get machine
readable information about the support status.  This perl code
demonstrate how to do it:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
use strict;
use warnings;
use SOAP::Lite;
use Data::Dumper;
my $GUID = &#39;11111111-1111-1111-1111-111111111111&#39;;
my $App = &#39;test&#39;;
my $servicetag = $ARGV[0] or die &quot;Please supply a servicetag. $!\n&quot;;
my ($deal, $latest, @dates);
my $s = SOAP::Lite
    -&gt; uri(&#39;http://support.dell.com/WebServices/&#39;)
    -&gt; on_action( sub { join &#39;&#39;, @_ } )
    -&gt; proxy(&#39;http://xserv.dell.com/services/assetservice.asmx&#39;)
    ;
my $a = $s-&gt;GetAssetInformation(
    SOAP::Data-&gt;name(&#39;guid&#39;)-&gt;value($GUID)-&gt;type(&#39;&#39;),
    SOAP::Data-&gt;name(&#39;applicationName&#39;)-&gt;value($App)-&gt;type(&#39;&#39;),
    SOAP::Data-&gt;name(&#39;serviceTags&#39;)-&gt;value($servicetag)-&gt;type(&#39;&#39;),
);
print Dumper($a -&gt; result) ;
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;The output can look like this:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
$VAR1 = {
          &#39;Asset&#39; =&gt; {
                     &#39;Entitlements&#39; =&gt; {
                                       &#39;EntitlementData&#39; =&gt; [
                                                            {
                                                              &#39;EntitlementType&#39; =&gt; &#39;Expired&#39;,
                                                              &#39;EndDate&#39; =&gt; &#39;2009-07-29T00:00:00&#39;,
                                                              &#39;Provider&#39; =&gt; &#39;&#39;,
                                                              &#39;StartDate&#39; =&gt; &#39;2006-07-29T00:00:00&#39;,
                                                              &#39;DaysLeft&#39; =&gt; &#39;0&#39;
                                                            },
                                                            {
                                                              &#39;EntitlementType&#39; =&gt; &#39;Expired&#39;,
                                                              &#39;EndDate&#39; =&gt; &#39;2009-07-29T00:00:00&#39;,
                                                              &#39;Provider&#39; =&gt; &#39;&#39;,
                                                              &#39;StartDate&#39; =&gt; &#39;2006-07-29T00:00:00&#39;,
                                                              &#39;DaysLeft&#39; =&gt; &#39;0&#39;
                                                            },
                                                            {
                                                              &#39;EntitlementType&#39; =&gt; &#39;Expired&#39;,
                                                              &#39;EndDate&#39; =&gt; &#39;2007-07-29T00:00:00&#39;,
                                                              &#39;Provider&#39; =&gt; &#39;&#39;,
                                                              &#39;StartDate&#39; =&gt; &#39;2006-07-29T00:00:00&#39;,
                                                              &#39;DaysLeft&#39; =&gt; &#39;0&#39;
                                                            }
                                                          ]
                                     },
                     &#39;AssetHeaderData&#39; =&gt; {
                                          &#39;SystemModel&#39; =&gt; &#39;GX620&#39;,
                                          &#39;ServiceTag&#39; =&gt; &#39;8DSGD2J&#39;,
                                          &#39;SystemShipDate&#39; =&gt; &#39;2006-07-29T19:00:00-05:00&#39;,
                                          &#39;Buid&#39; =&gt; &#39;2323&#39;,
                                          &#39;Region&#39; =&gt; &#39;Europe&#39;,
                                          &#39;SystemID&#39; =&gt; &#39;PLX_GX620&#39;,
                                          &#39;SystemType&#39; =&gt; &#39;OptiPlex&#39;
                                        }
                   }
        };
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;I have not been able to find any documentation from Dell about this
service outside the
&lt;a href=&quot;http://xserv.dell.com/services/assetservice.asmx?op=GetAssetInformation&quot;&gt;inline
documentation&lt;/a&gt;, and according to
&lt;a href=&quot;http://iboyd.net/index.php/2012/02/14/updated-dell-warranty-information-script/&quot;&gt;one
comment&lt;/a&gt; it can have stability issues, but it is a lot better than
scraping HTML pages. :)&lt;/p&gt;

&lt;p&gt;Wonder if HP and other server vendors have a similar service.  If
you know of one, drop me an email. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First monitor calibration using ColorHug</title>
                <link>http://people.skolelinux.org/pere/blog/First_monitor_calibration_using_ColorHug.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_monitor_calibration_using_ColorHug.html</guid>
                <pubDate>Thu, 31 May 2012 22:10:00 +0200</pubDate>
                <description>&lt;p&gt;A few days ago my color calibration gadget
&lt;a href=&quot;http://www.hughski.com/index.html&quot;&gt;ColorHug&lt;/a&gt; arrived in the
mail, and I&#39;ve had a few days to test it.  As all my machines are
running Debian Squeeze, where 
&lt;a href=&quot;http://packages.qa.debian.org/c/colorhug-client.html&quot;&gt;the
calibration software&lt;/a&gt; is missing (it is present in Wheezy and Sid),
I ran the calibration using the Fedora based live CD.  This worked
just fine.  So far I have only done the quick calibration.  It was
slow enough for me, so I will leave the more extensive calibration for
another day.&lt;/p&gt;

&lt;p&gt;After calibration, I get a
&lt;a href=&quot;http://en.wikipedia.org/wiki/ICC_profile&quot;&gt;ICC color
profile&lt;/a&gt; file that can be passed to programs understanding such
tools.  KDE do not seem to understand it out of the box, so I searched
for command line tools to use to load the color profile into X.
xcalib was the first one I found, and it seem to work fine for single
monitor setups.  But for my video player, a laptop with a flat screen
attached, it was unable to load the color profile for the correct
monitor.  After searching a bit, I
&lt;a href=&quot;http://ubuntuforums.org/showthread.php?t=1347896&quot;&gt;discovered&lt;/a&gt;
that the dispwin tool from the argyll package would do what I wanted,
and a simple&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
dispwin -d 1 profile.icc
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;later I had the color profile loaded for the correct monitor.  The
result was a bit more pink than I expected.  I guess I picked the
wrong monitor type for the &quot;led&quot; monitor I got, but the result is good
enough for now.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Ralf Gesellensetter</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Ralf_Gesellensetter.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Ralf_Gesellensetter.html</guid>
                <pubDate>Sun, 27 May 2012 17:15:00 +0200</pubDate>
                <description>&lt;p&gt;In 2003, a German teacher showed up on the
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt;
mailing list with interesting problems and reports proving he setting
up Linux for a (for us at the time) lot of pupils.  His name was Ralf
Gesellensetter, and he has been an important tester and contributor
since then, helping to make sure the
&lt;a href=&quot;http://www.debian.org/News/2012/20120311.html&quot;&gt;Debian Edu
Squeeze&lt;/a&gt; release became as good as it is..&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am a teacher from Germany, and my subjects are Geography,
Mathematics, and Computer Science (&quot;Informatik&quot;). During the past 12
years (since 2000), I have been working for a comprehensive (and soon,
also inclusive) school leading to all kind of general levels, such as
O- or A-level (&quot;Abitur&quot;).  For quite as long, I&#39;ve been taking care of
our computer network.&lt;/p&gt;

&lt;p&gt;Now, in my early 40s, I enjoy the privilege of spending a lot of my
spare time together with my wife, our son (3 years) and our daughter
(4 months).&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;We had tried different Linux based school servers, when members of
my local Linux User Group (LUG OWL) detected Skolelinux. I remember
very well, being part of a party celebrating the Linux New Media Award
(&quot;Best Newcomer Distribution&quot;, also nominated: Ubuntu) that was given
to Skolelinux at Linux World Exposition in Frankfurt, 2005 (IIRC). Few
months later, I had the chance to join a developer meeting in Ulsrud
(Oslo) and to hand out the award to Knut Yrvin and others.  For more
than 7 years, Skolelinux is part of our schools infrastructure, namely
our main server (tjener), one LTSP (today without thin clients), and
approximately 50 work stations. Most of these have the option to boot a
locally installed Skolelinux image.  As a consequence, I joined quite
a few events dealing with free software or Linux, and met many Debian
(Edu) developers. All of them seemed quite nice and competent to me,
one more reason to stick to Skolelinux.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Debian driven, you are given all the advantages of a community
project including well maintained updates. Once, you are familiar with
the network layout, you can easily roll out an entire educational
computer infrastructure, from just one installation media. As only
free software (FOSS) is used, that supports even elderly hardware,
up-sizing your IT equipment is only limited by space (i.e. available
labs).  Especially if you run a LTSP thin client server, your
administration costs tend towards zero.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;While Debian&#39;s stability has loads of advantages for servers, this
might be different in some cases for clients: Schools with unlimited
budget might buy new hardware with components that are not yet
supported by Debian stable, or wish to use more recent versions of
office packages or desktop environments.  These schools have the
option to run Debian testing or other distributions - if they have the
capacity to do so.  Another issue is that Debian release cycles
include a wide range of changes; therefor a high percentage of human
power seems to be absorbed by just keeping the features of Skolelinux
within the new setting of the version to come. During this process,
the cogs of Debian Edu are getting more and more professional,
i.e. harder to understand for novices.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;LibreOffice, Wikipedia, Openstreetmap, Iceweasel (Mozilla Firefox),
KMail, Gimp, Inkscape - and of course the Linux Kernel (not only on
PC, Laptop, Mobile, but also our SAT receiver)&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;ol&gt;

&lt;li&gt;Support computer science as regular subject in schools to make
people really &quot;own&quot; their hardware, to make them understand the
difference between proprietary software products, and free software
developing.&lt;/li&gt;

&lt;li&gt;Make budget baskets corresponding: In Germany&#39;s public schools
there are more or less fixed budgets for IT equipment (including
licenses), so schools won&#39;t benefit from any savings here. This
privilege is left to private schools which have consequently a large
share among German Skolelinux schools.&lt;/li&gt;

&lt;li&gt;Get free software in the seminars where would-be teachers are
trained. In many cases, teachers&#39; software customs are respected by
decision makers rather than the expertise of any IT experts.&lt;/li&gt;

&lt;li&gt;Don&#39;t limit ourself to free software run natively. Everybody uses
free software or free licenses (for instance Wikipedia), and this
general concept should get expanded to free educational content to be
shared world wide (school books e.g.).&lt;/li&gt;

&lt;li&gt;Make clear where ever you can that the market share of free (libre)
office suites is much above 20 p.c. today, and that you pupils don&#39;t
need to know the &quot;ribbon menu&quot; in order to get employed.&lt;/li&gt;

&lt;li&gt;Talk about the difference between freeware and free software.&lt;/li&gt;

&lt;li&gt;Spread free software, or even collections of portable free apps
for USB pen drives. Endorse students to get a legal copy of
Libreoffice rather than accepting them to use illegal serials.  And
keep sending documents in ODF formats.&lt;/li&gt;

&lt;/ol&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The cost of ODF and OOXML</title>
                <link>http://people.skolelinux.org/pere/blog/The_cost_of_ODF_and_OOXML.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_cost_of_ODF_and_OOXML.html</guid>
                <pubDate>Sat, 26 May 2012 18:00:00 +0200</pubDate>
                <description>&lt;p&gt;I just come across a blog post from Glyn Moody reporting the
claimed cost from Microsoft on requiring ODF to be used by the UK
government.  I just sent him an email to let him know that his
assumption are most likely wrong.  Sharing it here in case some of my
blog readers have seem the same numbers float around in the UK.&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt; &lt;p&gt;Hi.  I just noted your
&lt;a href=&quot;http://blogs.computerworlduk.com/open-enterprise/2012/04/does-microsoft-office-lock-in-cost-the-uk-government-500-million/index.htm&quot;&gt;http://blogs.computerworlduk.com/open-enterprise/2012/04/does-microsoft-office-lock-in-cost-the-uk-government-500-million/index.htm&lt;/a&gt;
comment:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&quot;They&#39;re all in Danish, not unreasonably, but even
with the help of Google Translate I can&#39;t find any figures about the
savings of &quot;moving to a flexible two standard&quot; as claimed by the
Microsoft email. But I assume it is backed up somewhere, so let&#39;s take
it, and the £500 million figure for the UK, on trust.&quot;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I can tell you that the Danish reports are inflated.  I believe it is
the same reports that were used in the Norwegian debate around 2007,
and Gisle Hannemyr (a well known IT commentator in Norway) had a look
at the content.  In short, the reason it is claimed that using ODF
will be so costly, is based on the assumption that this mean every
existing document need to be converted from one of the MS Office
formats to ODF, transferred to the receiver, and converted back from
ODF to one of the MS Office formats, and that the conversion will cost
10 minutes of work time for both the sender and the receiver.  In
reality the sender would have a tool capable of saving to ODF, and the
receiver would have a tool capable of reading it, and the time spent
would at most be a few seconds for saving and loading, not 20 minutes
of wasted effort.&lt;/p&gt;

&lt;p&gt;Microsoft claimed all these costs were saved by allowing people to
transfer the original files from MS Office instead of spending 10
minutes converting to ODF. :)&lt;/p&gt;

&lt;p&gt;See
&lt;a href=&quot;http://hannemyr.com/no/ms12_vl02.php&quot;&gt;http://hannemyr.com/no/ms12_vl02.php&lt;/a&gt;
and
&lt;a href=&quot;http://hannemyr.com/no/ms12.php&quot;&gt;http://hannemyr.com/no/ms12.php&lt;/a&gt;
for background information.  Norwegian only, sorry. :)&lt;/p&gt;
&lt;/blockquote&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>ColorHug - USB and free software based screen color calibration</title>
                <link>http://people.skolelinux.org/pere/blog/ColorHug___USB_and_free_software_based_screen_color_calibration.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/ColorHug___USB_and_free_software_based_screen_color_calibration.html</guid>
                <pubDate>Fri, 18 May 2012 10:00:00 +0200</pubDate>
                <description>&lt;p&gt;In january, I
&lt;a href=&quot;http://blog.cihar.com/archives/2012/01/17/colorhug-has-arrived/&quot;&gt;discovered
the ColorHug&lt;/a&gt;, a USB dongle from
&lt;a href=&quot;http://www.hughski.com/index.html&quot;&gt;Hughski&lt;/a&gt; to calibrate
the color on a computer screen.  The software required is
&lt;a href=&quot;http://packages.qa.debian.org/c/colorhug-client.html&quot;&gt;included
in Debian&lt;/a&gt;, and I decided back then to preorder from the next
batch.  Yesterday I finally heard back from them, and got the
opportunity to order.  Today I ordered mine, and eagerly await the
delivery.  I hope it arrive next week, as I got a confirmation that it
should go in the mail on monday. :)&lt;/p&gt;

&lt;p&gt;If you want to ensure the colors on the screen match the intended
colors, I suggest you check out this cheap tool with free software
drivers. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Jürgen Leibner</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__J_rgen_Leibner.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__J_rgen_Leibner.html</guid>
                <pubDate>Sun, 13 May 2012 20:30:00 +0200</pubDate>
                <description>&lt;p&gt;It has been a few busy weeks for me, but I am finally back to
publish another interview with the people behind
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt;.
This time it is one of our German developers, who have helped out over the
years to make sure both a lot of major but also a lot of the minor
details get right before release.

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My name is Jürgen Leibner, I&#39;m 49 years old and living in
Bielefeld, a town in northern Germany.  I worked nearly 20 years as
certified engineer in the department for plant design and layout of an
international company for machinery and equipment.  Since 2011 I&#39;m a
certified technical writer (tekom e.V.) and doing technical
documentations for a steam turbine manufacturer.  From April this year
I will manage the department of technical documentation at a
manufacturer of automation and assembly line engineering.&lt;/p&gt;

&lt;p&gt;My first contact with linux was around 1993. Since that time I used
it at work and at home repeatedly but not exclusively as I do now at
home since 2006.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Once a day in the early year of 2001 when I wanted to fetch my
daughter from primary school, there was a teacher sitting in the
middle of 20 old computers trying to boot them and he failed. I helped
him to get them booting. That was seen by the school director and she
asked me if I would like to manage that the school gets all that old
computers in use. I answered: &quot;Yes&quot;.&lt;/p&gt;

&lt;p&gt;Some weeks later every of the 10 classrooms had one computer
running Windows98. I began to collect old computers and equipment as
gifts and installed the first computer room with a peer-to-peer
network. I did my work at school without being payed in my spare time
and with a lot of fun.  About one year later the school was connected
to Internet and a local area network was installed in the school
building.  That was the time to have a server and I knew it must be a
Linux server to be able to fulfil all the wishes of the teachers and
being able to do this in a transparent and economic way, without extra
costs for things like licence and software.  So I searched for a
school server system running under Linux and I found a couple of
people nearby who founded &#39;skolelinux.de&#39;. It was the Skolelinux
prerelease 32 I first tried out for being used at the school.  I
managed the IT of that school until the municipal authority took over
the IT management and centralised the services for all schools in
Bielefeld in December of 2006.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;When I&#39;m looking back to the beginning, there were other advantages
for me as today.&lt;/p&gt;

&lt;p&gt;In the past there were advantages like:&lt;/p&gt;

&lt;p&gt;&lt;ul&gt;

&lt;li&gt;I don&#39;t need to buy it so it generates no costs to the school as
they had little money to spent for computers and software.&lt;/li&gt;

&lt;li&gt;It has a licence which grands all rights to use it without
cost.&lt;/li&gt;

&lt;li&gt;It was more able to fit all requirements of a server system for
schools than a Microsoft server system, even if there are only Windows
clients because of it&#39;s preconfigured overall concept of being a
infrastructure solution and community for schools, not only a
server&lt;/li&gt;

&lt;li&gt;I was able to configure the server to the needs of the
school.&lt;/li&gt;

&lt;/ul&gt;&lt;/p&gt;

&lt;p&gt;Today some of the advantages has been lost, changed or new ones
came up in this way:&lt;/p&gt;

&lt;p&gt;&lt;ul&gt;

&lt;li&gt;Most schools here do have money to buy hardware and software
now.&lt;/li&gt;

&lt;li&gt;They are today mostly managed from central IT departments which
have own concepts which often do not fit to Debian Edu concepts
because they are to close to Microsoft ideology.&lt;/li&gt;

&lt;li&gt;With the Squeeze version of Debian Edu which now uses GOsa² for
management I feel more able to manage the daily tasks than with the
interfaces used in the past.&lt;/li&gt;

&lt;li&gt;It is more modular than in the past and fits even better to the
different needs.&lt;/li&gt;

&lt;li&gt;The documentation is usable and gets better every day.&lt;/li&gt;

&lt;li&gt;More people than ever before are using Debian Edu all over the
world and so the community, which is an very important part I think,
is sharing knowledge and minds.&lt;/li&gt;

&lt;li&gt;Most, maybe all, of the technical requirements for schools are
solved today by Debian Edu. &lt;/li&gt;

&lt;/ul&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;ul&gt;

&lt;li&gt;There are too few IT companies able to integrate Debian Edu into
their product portfolio for serving schools with concepts or even
whole municipality areas.&lt;/li&gt;

&lt;li&gt;Debian Edu has beside other free and open software projects not
enough lobbyists which promote free and open software to
politicians.&lt;/li&gt;

&lt;li&gt;Technically there are no disadvantages I&#39;m aware of.&lt;/li&gt;

&lt;/ul&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I use Debian stable on my home server and on my little desktop
computer. On my laptop I use Debian testing/sid. The applications I
use on my laptop and my desktop are Open/Libre-office, Iceweasel,
KMail, DigiKam, Amarok, Dolphin, okular and all the other programs I
need from the KDE environment.  On console I use newsbeuter, mutt,
screen, irssi and all the other famous and useful tools.&lt;/p&gt;

&lt;p&gt;My home server provides mail services with exim, dovecot, roundcube
and mutt over ssh on the console, file services with samba, NFS,
rsync, web services with apache, moinmoin-wiki, multimedia services
with gallery2 and mediatomb and database services with MySQL for me
and the whole family.  I probably forgot something.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I believe, we should provide concepts for IT companies to integrate
Debian Edu into their product portfolio with use cases for different
countries and areas all over the world.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Cutting it short - and picking the right tool for the job</title>
                <link>http://people.skolelinux.org/pere/blog/Cutting_it_short___and_picking_the_right_tool_for_the_job.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Cutting_it_short___and_picking_the_right_tool_for_the_job.html</guid>
                <pubDate>Mon, 30 Apr 2012 23:30:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;!-- IMG_5869.JPG --&gt;
&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/panasonic-er-1611.jpeg&quot;&gt;&lt;/p&gt;

&lt;p&gt;I normally cut my hair short, and my tool of choice has been a
common hair/beard cutter, bought in a electrical shop here in Norway.
But the last ones have not really been up to the task.  My last
cutter, some model from Braun, could only cut a few of my hairs at the
time, and cutting my head took forever.  And the one before that did
not work very well either.  We have looked for something better for a
while, but it was not until I ended up visiting a hairdresser that we
discovered that there are indeed better tools available.  But these
are not marketed and sold to &quot;regular consumers&quot;.  The hair saloons
can get them through their suppliers, but their suppliers only sell
companies.  The models they sell, are very different from the ones
available from Elkjøp and Lefdal.  The main difference is their
efficiency.  It would cut my hair in 5 minutes, instead of the 30-40
minutes required by my impotent Braun.  The hairdresser I visited had
a Panasonic ER160, which unfortunately is no longer available from the
producer.  But I found it had a successor, the Panasonic ER1611.&lt;/p&gt;

&lt;p&gt;The next step was to find somewhere to buy it.  This was not
straight forward.  The list of suppliers I got from the hairdresser
did not want to sell anything to me.  But searching for the model on
the web we found a supplier in Norway willing to sell it to us for
around NOK 4000,-.  This was a bit much.  We kept searching and
finally found a Danish supplier
&lt;a href=&quot;http://nicehair.dk/panasonic-er-1611-professionel-hartrimmer.html&quot;&gt;selling
it for around NOK 1800,-&lt;/a&gt;.  We ordered one, and it arrived a few
days ago.&lt;/p&gt;

&lt;p&gt;The instructions said it had to charge for 8 hours when we started
to use it, so we left it charging over night.  Normally it will only
need one hour to charge.  The following evening we successfully tested
it, and I can warmly recommend it to anyone looking for a real hair
cutter.  The ones we have used until now have been hair cutter
toys.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>HTC One X - Your video?  What do you mean?</title>
                <link>http://people.skolelinux.org/pere/blog/HTC_One_X___Your_video___What_do_you_mean_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/HTC_One_X___Your_video___What_do_you_mean_.html</guid>
                <pubDate>Thu, 26 Apr 2012 13:20:00 +0200</pubDate>
                <description>&lt;p&gt;In &lt;a href=&quot;http://www.idg.no/computerworld/article243690.ece&quot;&gt;an
article today&lt;/a&gt; published by Computerworld Norway, the photographer
&lt;a href=&quot;http://www.urke.com/eirik/&quot;&gt;Eirik Helland Urke&lt;/a&gt; reports
that the video editor application included with
&lt;a href=&quot;http://www.htc.com/www/smartphones/htc-one-x/#specs&quot;&gt;HTC One
X&lt;/a&gt; have some quite surprising terms of use.  The article is mostly
based on the twitter message from mister Urke, stating:

&lt;p&gt;&lt;blockquote&gt;
&quot;&lt;a href=&quot;http://twitter.com/urke/status/194062269724897280&quot;&gt;Drøy
brukeravtale: HTC kan bruke MINE redigerte videoer kommersielt. Selv
kan jeg KUN bruke dem privat.&lt;/a&gt;&quot;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I quickly translated it to this English message:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
&quot;Arrogant user agreement: HTC can use MY edited videos
commercially.  Although I can ONLY use them privately.&quot;
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I&#39;ve been unable to find the text of the license term myself, but
suspect it is a variation of the MPEG-LA terms I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Terms_of_use_for_video_produced_by_a_Canon_IXUS_130_digital_camera.html&quot;&gt;discovered
with my Canon IXUS 130&lt;/a&gt;.  The HTC One X specification specifies that
the recording format of the phone is .amr for audio and .mp3 for
video.  AMR is
&lt;a href=&quot;http://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec#Licensing_and_patent_issues&quot;&gt;Adaptive
Multi-Rate audio codec&lt;/a&gt; with patents which according to the
Wikipedia article require an license agreement with
&lt;a href=&quot;http://www.voiceage.com/&quot;&gt;VoiceAge&lt;/a&gt;.  MP4 is
&lt;a href=&quot;http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Patent_licensing&quot;&gt;MPEG4 with
H.264&lt;/a&gt;, which according to Wikipedia require a licence agreement
with &lt;a href=&quot;http://www.mpegla.com/&quot;&gt;MPEG-LA&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I know why I prefer
&lt;a href=&quot;http://www.digistan.org/open-standard:definition&quot;&gt;free and open
standards&lt;/a&gt; also for video.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>RAND terms - non-reasonable and discriminatory</title>
                <link>http://people.skolelinux.org/pere/blog/RAND_terms___non_reasonable_and_discriminatory.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/RAND_terms___non_reasonable_and_discriminatory.html</guid>
                <pubDate>Thu, 19 Apr 2012 22:20:00 +0200</pubDate>
                <description>&lt;p&gt;Here in Norway, the
&lt;a href=&quot;http://www.regjeringen.no/nb/dep/fad.html?id=339&quot;&gt; Ministry of
Government Administration, Reform and Church Affairs&lt;/a&gt; is behind
a &lt;a href=&quot;http://standard.difi.no/forvaltningsstandarder&quot;&gt;directory of
standards&lt;/a&gt; that are recommended or mandatory for use by the
government.  When the directory was created, the people behind it made
an effort to ensure that everyone would be able to implement the
standards and compete on equal terms to supply software and solutions
to the government.  Free software and non-free software could compete
on the same level.&lt;/p&gt;

&lt;p&gt;But recently, some standards with RAND
(&lt;a href=&quot;http://en.wikipedia.org/wiki/Reasonable_and_non-discriminatory_licensing&quot;&gt;Reasonable
And Non-Discriminatory&lt;/a&gt;) terms have made their way into the
directory.  And while this might not sound too bad, the fact is that
standard specifications with RAND terms often block free software from
implementing them.  The reasonable part of RAND mean that the cost per
user/unit is low,and the non-discriminatory part mean that everyone
willing to pay will get a license.  Both sound great in theory.  In
practice, to get such license one need to be able to count users, and
be able to pay a small amount of money per unit or user.  By
definition, users of free software do not need to register their use.
So counting users or units is not possible for free software projects.
And given that people will use the software without handing any money
to the author, it is not really economically possible for a free
software author to pay a small amount of money to license the rights
to implement a standard when the income available is zero.  The result
in these situations is that free software are locked out from
implementing standards with RAND terms.&lt;/p&gt;

&lt;p&gt;Because of this, when I see someone claiming the terms of a
standard is reasonable and non-discriminatory, all I can think of is
how this really is non-reasonable and discriminatory.  Because free
software developers are working in a global market, it does not really
help to know that software patents are not supposed to be enforceable
in Norway.  The patent regimes in other countries affect us even here.
I really hope the people behind the standard directory will pay more
attention to these issues in the future.&lt;/p&gt;

&lt;p&gt;You can find more on the issues with RAND, FRAND and RAND-Z terms
from Simon Phipps
(&lt;a href=&quot;http://blogs.computerworlduk.com/simon-says/2010/11/rand-not-so-reasonable/&quot;&gt;RAND:
Not So Reasonable?&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;Update 2012-04-21: Just came across a
&lt;a href=&quot;http://blogs.computerworlduk.com/open-enterprise/2012/04/of-microsoft-netscape-patents-and-open-standards/index.htm&quot;&gt;blog
post from Glyn Moody&lt;/a&gt; over at Computer World UK warning about the
same issue, and urging people to speak out to the UK government.  I
can only urge Norwegian users to do the same for
&lt;a href=&quot;http://www.standard.difi.no/hoyring/hoyring-om-nye-anbefalte-it-standarder&quot;&gt;the
hearing taking place at the moment&lt;/a&gt; (respond before 2012-04-27).
It proposes to require video conferencing standards including
specifications with RAND terms.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Andreas Mundt</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Andreas_Mundt.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Andreas_Mundt.html</guid>
                <pubDate>Sun, 15 Apr 2012 12:10:00 +0200</pubDate>
                <description>&lt;p&gt;Behind &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and
Skolelinux&lt;/a&gt; there are a lot of people doing the hard work of
setting together all the pieces.  This time I present to you Andreas
Mundt, who have been part of the technical development team several
years.  He was also a key contributor in getting GOsa and Kerberos set
up in the recently released
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/Documentation/Squeeze&quot;&gt;Debian
Edu Squeeze&lt;/a&gt; version.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My name is Andreas Mundt, I grew up in south Germany.  After
studying Physics I spent several years at university doing research in
Quantum Optics.  After that I worked some years in an optics company.
Finally I decided to turn over a new leaf in my life and started
teaching 10 to 19 years old kids at school.  I teach math, physics,
information technology and science/technology.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Already before I switched to teaching, I followed the Debian Edu
project because of my interest in education and Debian.  Within the
qualification/training period for the teaching, I started
contributing.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The advantages of Debian Edu are the well known name, the
out-of-the-box philosophy and of course the great free software of the
Debian Project!&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;As every coin has two sides, the out-of-the-box philosophy has its
downside, too.  In my opinion, it is hard to modify and tweak the
setup, if you need or want that.  Further more, it is not easily
possible to upgrade the system to a new release.  It takes much too
long after a Debian release to prepare the -Edu release, perhaps
because the number of developers working on the core of the code is
rather small and often busy elsewhere.&lt;/p&gt;

&lt;p&gt;The &lt;a href=&quot;http://wiki.debian.org/DebianLAN&quot;&gt;Debian LAN&lt;/a&gt;
project might fill the use case of a more flexible system.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am only using non-free software if I am forced to and run Debian
on all my machines.  For documents I prefer LaTeX and PGF/TikZ, then
mutt and iceweasel for email respectively web browsing.  At school I
have Arduino and Fritzing in use for a micro controller project.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;One of the major problems is the vendor lock-in from top to bottom:
Especially in combination with ignorant government employees and
politicians, this works out great for the &quot;market-leader&quot;.  The school
administration here in Baden-Wuerttemberg is occupied by that vendor.
Documents have to be prepared in non-free, proprietary formats.  Even
free browsers do not work for the school administration.  Publishers
of school books provide software only for proprietary platforms.&lt;/p&gt;

&lt;p&gt;To change this, political work is very important.  Parts of the
political spectrum have become aware of the problem in the last years.
However it takes quite some time and courageous politicians to &#39;free&#39;
the system.  There is currently some discussion about &quot;Open Data&quot; and
&quot;Free/Open Standards&quot;.  I am not sure if all the involved parties have
a clue about the potential of these ideas, and probably only a
fraction takes them seriously.  However it might slowly make free
software and the philosophy behind it more known and popular.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Justin B. Rye</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Justin_B__Rye.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Justin_B__Rye.html</guid>
                <pubDate>Sun, 8 Apr 2012 10:50:00 +0200</pubDate>
                <description>&lt;p&gt;It take all kind of contributions to create a Linux distribution
like &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt;,
and this time I lend the ear to Justin B. Rye, who is listed as a big
contributor to the
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/Documentation/Squeeze&quot;&gt;Debian
Edu Squeeze release manual&lt;/a&gt;.

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;m a 44-year-old linguistics graduate living in Edinburgh who has
occasionally been employed as a sysadmin.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;m neither a developer nor a Skolelinux/Debian Edu user!  The only
reason my name&#39;s in the credits for the documentation is that I hang
around on debian-l10n-english waiting for people to mention things
they&#39;d like a native English speaker to proofread...  So I did a sweep
through the wiki for typos and Norglish and inconsistent spellings of
&quot;localisation&quot;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;These questions are too hard for me - I don&#39;t use it!  In fact I
had hardly any contact with I.T. until long after I&#39;d got out of the
education system.&lt;/p&gt;

&lt;p&gt;I can tell you the advantages of Debian for me though: it soaks up
as much of my free time as I want and no more, and lets me do
everything I want a computer for without ever forcing me to spend
money on the latest hardware.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;ve been using Debian since Rex; popularity-contest says the
software that I use most is xinit, xterm, and xulrunner (in other
words, I use a distinctly retro sort of desktop).&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Well, I don&#39;t know.  I suppose I&#39;d be inclined to try reasoning
with the people who make the decisions, but obviously if that worked
you would hardly need a strategy.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Why the KDE menu is slow when /usr/ is NFS mounted - and a workaround</title>
                <link>http://people.skolelinux.org/pere/blog/Why_the_KDE_menu_is_slow_when__usr__is_NFS_mounted___and_a_workaround.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Why_the_KDE_menu_is_slow_when__usr__is_NFS_mounted___and_a_workaround.html</guid>
                <pubDate>Fri, 6 Apr 2012 22:40:00 +0200</pubDate>
                <description>&lt;p&gt;Recently I have spent time with
&lt;a href=&quot;http://www.slxdrift.no/&quot;&gt;Skolelinux Drift AS&lt;/a&gt; on speeding
up a &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt;
Lenny installation using LTSP diskless workstations, and in the
process I discovered something very surprising.  The reason the KDE
menu was responding slow when using it for the first time, was mostly
due to the way KDE find application icons.  I discovered that showing
the Multimedia menu would cause more than 20 000 IP packages to be
passed between the LTSP client and the NFS server.  Most of these were

NFS LOOKUP calls, resulting in a NFS3ERR_NOENT response.  Because the
ping times between the client and the server were in the range 2-20
ms, the menus would be very slow.  Looking at the strace of kicker in
Lenny (or plasma-desktop i Squeeze - same problem there), I see that
the source of these NFS calls are access(2) system calls for
non-existing files.  KDE can do hundreds of access(2) calls to find
one icon file.  In my example, just finding the mplayer icon required
around 230 access(2) calls.&lt;/p&gt;

&lt;p&gt;The KDE code seem to search for icons using a list of icon
directories, and the list of possible directories is large.  In
(almost) each directory, it look for files ending in .png, .svgz, .svg
and .xpm.  The result is a very slow KDE menu when /usr/ is NFS
mounted.  Showing a single sub menu may result in thousands of NFS
requests.  I am not the first one to discover this.  I found a
&lt;a href=&quot;https://bugs.kde.org/show_bug.cgi?id=211416&quot;&gt;KDE bug report
from 2009&lt;/a&gt; about this problem, and it is still unsolved.&lt;/p&gt;

&lt;p&gt;My solution to speed up the KDE menu was to create a package
kde-icon-cache that upon installation will look at all .desktop files
used to generate the KDE menu, find their icons, search the icon paths
for the file that KDE will end up finding at run time, and copying the
icon file to /var/lib/kde-icon-cache/.  Finally, I add symlinks to
these icon files in one of the first directories where KDE will look
for them.  This cut down the number of file accesses required to find
one icon from several hundred to less than 5, and make the KDE menu
almost instantaneous.  I&#39;m not quite sure where to make the package
publicly available, so for now it is only available on request.&lt;/p&gt;

&lt;p&gt;The bug report mention that this do not only affect the KDE menu
and icon handling, but also the login process.  Not quite sure how to
speed up that part without replacing NFS with for example NBD, and
that is not really an option at the moment.&lt;/p&gt;

&lt;p&gt;If you got feedback on this issue, please let us know on debian-edu
(at) lists.debian.org.&lt;/p&gt;

&lt;p&gt;Update 2015-08-04: The
&lt;a href=&quot;http://anonscm.debian.org/cgit/debian-edu/upstream/kde-icon-cache.git/&quot;&gt;source
of the scripts and associated Debian package&lt;/a&gt; is available from the
Debian Edu github repository.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu in the Linux Weekly News</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_in_the_Linux_Weekly_News.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_in_the_Linux_Weekly_News.html</guid>
                <pubDate>Thu, 5 Apr 2012 08:00:00 +0200</pubDate>
                <description>&lt;p&gt;About two weeks ago, I was interviewed via email about
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt; by
Bruce Byfield in Linux Weekly News.  The result was made public for
non-subscribers today.  I am pleased to see liked our Linux solution
for schools.  Check out his article
&lt;a href=&quot;https://lwn.net/Articles/488805/&quot;&gt;Debian Edu/Skolelinux: A
distribution for education&lt;/a&gt; if you want to learn more.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Wolfgang Schweer</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Wolfgang_Schweer.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Wolfgang_Schweer.html</guid>
                <pubDate>Sun, 1 Apr 2012 23:00:00 +0200</pubDate>
                <description>&lt;p&gt;Germany is a core area for the
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and Skolelinux&lt;/a&gt;
user community, and this time I managed to get hold of Wolfgang
Schweer, a valuable contributor to the project from Germany.

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I&#39;ve studied Mathematics at the university &#39;Ruhr-Universität&#39; in
Bochum, Germany. Since 1981 I&#39;m working as a teacher at the school
&quot;&lt;a href=&quot;http://www.westfalenkolleg-dortmund.de/&quot;&gt;Westfalen-Kolleg
Dortmund&lt;/a&gt;&quot;, a second chance school.  Here, young adults is given
the opportunity to get further education in order to do the school
examination &#39;Abitur&#39;, which will allow to study at a university. This
second chance is of value for those who want a better job perspective
or failed to get a higher school examination being teens.&lt;/p&gt;

&lt;p&gt;Besides teaching I was involved in developing online courses for a
blended learning project called &#39;abitur-online.nrw&#39; and in some other
information technology related projects. For about ten years I&#39;ve been
teacher and coordinator for the &#39;abitur-online&#39; project at my
school. Being now in my early sixties, I&#39;ve decided to leave school at
the end of April this year.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The first information about Skolelinux must have come to my
attention years ago and somehow related to LTSP (Linux Terminal Server
Project).  At school, we had set up a network at the beginning of 1997
using Suse Linux on the desktop, replacing a Novell network. Since
2002, we used old machines from the city council of Dortmund as thin
clients (LTSP, later Ubuntu/Lessdisks) cause new hardware was out of
reach. At home I&#39;m using Debian since years and - subscribed to the
Debian news letter - heard from time to time about Skolelinux. About
two years ago I proposed to replace the (somehow undocumented and only
known to me) system at school by a well known Debian based system:
Skolelinux.&lt;/p&gt;

&lt;p&gt;Students and teachers appreciated the new system because of a
better look and feel and an enhanced access to local media on thin
clients.  The possibility to alter and/or reset passwords using a GUI
was welcomed, too. Being able to do administrative tasks using a GUI
and to easily set up workstations using PXE was of very high value for
the admin teachers.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;It&#39;s open source, easy to set up, stable and flexible due to it&#39;s
Debian base. It integrates LTSP out-of-the-box. And it is documented!
So it was a perfect choice.&lt;/p&gt;

&lt;p&gt;Being open source, there are no license problems and so it&#39;s
possible to point teachers and students to programs like
OpenOffice.org, ViewYourMind (mind mapping) and The Gimp.  It&#39;s of
high value to be able to adapt parts of the system to special needs of
a school and to choose where to get support for this.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Nothing yet.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;At home (Debian Sid with Gnome Desktop): Iceweasel, LibreOffice,
Mutt, Gedit, Document Viewer, Midnight Commander, flpsed (PDF
Annotator).  At school (Skolelinux Lenny): Iceweasel, Gedit,
LibreOffice.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Some time ago I thought it was enough to tell people about it. But
that doesn&#39;t seem to work quite well. Now I concentrate on those more
interested and hope to get multiplicators that way.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu screencast: Checking email with kmail using Kerberos authentication</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_screencast__Checking_email_with_kmail_using_Kerberos_authentication.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_screencast__Checking_email_with_kmail_using_Kerberos_authentication.html</guid>
                <pubDate>Sun, 25 Mar 2012 10:00:00 +0200</pubDate>
                <description>&lt;!-- Video HTML based on http://www.diveintohtml5.net/video.html --&gt;

&lt;p&gt;The same Debian Edu developer that did the last screen cast I
published, Wolfgang Schweer, has created a new screen cast showing how
to set up Kmail in Debian Edu Squeze to authenticate using Kerberos,
allowing users to check their local email account without providing
any password. The video is embedded here in quarter size,
and also available from &lt;a href=&quot;https://vimeo.com/38601767&quot;&gt;vimeo&lt;/a&gt;
and download as a
&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-03-14-Debian-Edu_Configure_Kmail_for_internal_usage.ogv&quot;&gt;Ogg
Theora&lt;/a&gt; file.  Check it out below.&lt;/p&gt;

&lt;p&gt;&lt;video id=&quot;kmail-kerberos-movie&quot; width=&quot;256&quot; height=&quot;184&quot; preload controls&gt;
  &lt;source src=&quot;http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-03-14-Debian-Edu_Configure_Kmail_for_internal_usage.ogv&quot; type=&#39;video/ogg; codecs=&quot;theora, vorbis&quot;&#39; /&gt;
    &lt;p&gt;Download video as
      &lt;a href=&quot;http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-03-14-Debian-Edu_Configure_Kmail_for_internal_usage.ogv&quot;&gt;Ogg&lt;/a&gt;.&lt;/p&gt; 
&lt;/video&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: John Ingleby</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__John_Ingleby.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__John_Ingleby.html</guid>
                <pubDate>Mon, 19 Mar 2012 21:15:00 +0100</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt;
users are spread all across the globe.  The second inteview after
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2012/03/msg00001.html&quot;&gt;the
Squeeze release&lt;/a&gt; was publised is with John Ingleby, a teacher and
long time Linux user in United Kingdom.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I teach ICT part time at the Rudolf Steiner School in Kings
Langley, near London, UK. Previously I worked as a technical
author/trainer while my children attended the school, and I also
contributed to the Schoolforge UK community with the aim of
encouraging UK schools to adopt free/open source software. Five or six
years ago we had about 50 schools interested in some way, but we
weren&#39;t able to convert many of them into sustainable
installations.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Skolelinux had two representatives at an early Edubuntu meeting in
London which I attended. However at that time our school network had
just been installed using CentOS, LTSP 4 and GNOME. When LTSP 5 came
along we switched to Edubuntu thin client servers so now we have a
mixed environment which includes Windows PCs and student laptops, as
well as their MacBooks and iPads. However, the proprietary systems
have always been rather problematic, and we never built a GUI for the
LDAP server, so when I discovered Skolelinux is configured for all
these things we decided to try it.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;By far the biggest advantage is the Debian Edu community. Apart
from that I have always believed in the same &quot;sustainable computing&quot;
goals that Skolelinux is built on: installing Linux on computers which
would otherwise be thrown away, to provide a reliable, secure and
low-cost IT environment for schools. From my own experience I know
that a part-time person can teach and manage a network of about 25
Linux computers, but it would take much more of my time if we had
proprietary software everywhere.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;As a newcomer I&#39;m just finding out who&#39;s who in the community and
how you&#39;re organised, and what your procedures are for dealing with
various things such as editing manual pages and so-on. The only
English language mailing list seems to be for developers as well as
users, so my inbox needs heavy pruning each day!&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Besides the software already mentioned at school we use Samba,
OpenLDAP, CUPS, Nagios and Dansguardian for the network, and on the
desktops we have LibreOffice, Firefox, GIMP and Inkscape. At home I
use Ubuntu and an Android 4 eePad Transformer (but I&#39;m not sure if
that counts...)&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;That&#39;s a tough question! For very many years UK schools installed
and taught only proprietary software, so that at the highest levels
the notion of &quot;computer&quot; means simply &quot;proprietary office
applications&quot;.  However, schools today are experiencing budget
constraints, and many are having to think hard about upgrading Windows
XP.  At the same time, we have students showing teachers how to use
iPads, MacBooks and Android, so the choice of operating system is no
longer quite so automatic. What is more, our government at last
realised that we need people with programming skills, so they&#39;re
putting coding back in the curriculum! And it&#39;s encouraging that the
first 10,000 Raspberry Pi units sold out in 2 hours.&lt;/p&gt;

&lt;p&gt;I don&#39;t really know what strategy is going to get UK schools to use
free software, but building an active community of Skolelinux/Debian
Edu users in this country has to be part of it.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Writing and translating documentation in Debian Edu</title>
                <link>http://people.skolelinux.org/pere/blog/Writing_and_translating_documentation_in_Debian_Edu.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Writing_and_translating_documentation_in_Debian_Edu.html</guid>
                <pubDate>Fri, 16 Mar 2012 09:55:00 +0100</pubDate>
                <description>&lt;p&gt;Documentation in Debian Edu is provided in several languages, and
it is important to make it both easy to contribute and to keep the
translated versions in sync.  To do this we have come up with what we
believe is a very efficient work flow.&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;The documentation is written in a
&lt;a href=&quot;http://moinmo.in&quot;&gt;moinmoin wiki&lt;/a&gt; (see for example
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/Documentation/Squeeze&quot;&gt;the
Squeeze release manual&lt;/a&gt;) with support for exporting the content as
docbook XML.&lt;/li&gt;

&lt;li&gt;This docbook document is given to po4a to extract a gettext style
.pot file with the content, which in turn is used to create .po files
with the translated text.&lt;/li&gt;

&lt;li&gt;The .po files are given to translators, and they can always tell
which part of the original wiki document is new or changed.  They can
use their normal translation tools like lokalize or poedit to write
the translation.  There is even a system in place to handle translated
images.&lt;/li&gt;

&lt;li&gt;The translated .po files are combined with the original docbook
XML document using po4a to create a translated docbook document.&lt;/li&gt;

&lt;li&gt;The final step is to use all the generated docbook files and
create PDF and HTML version of the original and translated documents.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;This setup work very well, but have a few issues.  The biggest
issue is that &lt;a href=&quot;http://moinmo.in/DocBook&quot;&gt;the docbook support
we use in moinmoin&lt;/a&gt; is not actively maintained.  The docbook
support is also buggy, and our build system contain workarounds to
make sure the generated docbook is usable despite these bugs.&lt;/p&gt;

&lt;p&gt;If you want to have a look at our setup, it is all there in the
&lt;a href=&quot;http://packages.qa.debian.org/debian-edu-doc&quot;&gt;debian-edu-doc
package&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Skolelinux / Debian Edu Squeeze is out!</title>
                <link>http://people.skolelinux.org/pere/blog/Skolelinux___Debian_Edu_Squeeze_is_out_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Skolelinux___Debian_Edu_Squeeze_is_out_.html</guid>
                <pubDate>Sun, 11 Mar 2012 23:00:00 +0100</pubDate>
                <description>&lt;p&gt;This weekend we finally published the first stable release of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux / Debian Edu&lt;/a&gt; based
on Debian/Squeeze.  The full announcement is
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2012/03/msg00001.html&quot;&gt;available&lt;/a&gt;
from the project announcement list.  Now is a good time to test if it
you have not done so already.&lt;/p&gt;

&lt;p&gt;I plan to present the new version at
&lt;a href=&quot;http://www.nuug.no/aktiviteter/20120313-skolelinux/&quot;&gt;a NUUG
meeting&lt;/a&gt; on tuesday.  I look forward to seeing you there if you are
in Oslo, Norway.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu interview: Nigel Barker</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Nigel_Barker.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Nigel_Barker.html</guid>
                <pubDate>Fri, 9 Mar 2012 11:30:00 +0100</pubDate>
                <description>&lt;p&gt;Inspired by &lt;a href=&quot;http://raphaelhertzog.com/tag/interview/&quot;&gt;the
interview series&lt;/a&gt; conducted by Raphael, I started a Norwegian
interview series with people involved in the Debian Edu / Skolelinux
community.  This was so popular that I believe it is time to move to a
more international audience.&lt;/p&gt;

&lt;p&gt;While &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu and
Skolelinux&lt;/a&gt; originated in France and Norway, and have most users in
Europe, there are users all around the globe.  One of those far away
from me is Nigel Barker, a long time Debian Edu system administrator
and contributor.  It is thanks to him that Debian Edu is adjusted to
work out of the box in Japan.  I got him to answer a few questions,
and am happy to share the response with you. :)


&lt;p&gt;&lt;strong&gt;Who are you, and how do you spend your days?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;My name is Nigel Barker, and I am British. I am married to Yumiko,
and we have three lovely children, aged 15, 14 and 4(!) I am the IT
Coordinator at Hiroshima International School, Japan. I am also a
teacher, and in fact I spend most of my day teaching Mathematics,
Science, IT, and Chemistry. I was originally a Chemistry teacher, but
I have always had an interest in computers. Another teacher teaches
primary school IT, but apart from that I am the only computer person,
so that means I am the network manager, technician and webmaster,
also, and I help people with their computer problems. I teach python
to beginners in an after-school club. I am way too busy, so I really
appreciate the simplicity of Skolelinux.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;How did you get in contact with the Skolelinux/Debian Edu
project?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;In around 2004 or 5 I discovered the ltsp project, and set up a
server in the IT lab. I wanted some way to connect it to our central
samba server, which I was also quite poor at configuring. I discovered
Edubuntu when it came out, but it didn&#39;t really improve my setup. I
did various desperate searches for things like &quot;school Linux server&quot;
and ended up in a document called &quot;Drift&quot; something or other. Reading
there it became clear that Skolelinux was going to solve all my
problems in one go. I was very excited, but apprehensive, because my
previous attempts to install Debian had ended in failure (I used
Mandrake for everything - ltsp, samba, apache, mail, ns...). I
downloaded a beta version, had some problems, so subscribed to the
Debian Edu list for help. I have remained subscribed ever since, and
my school has run a Skolelinux network since Sarge.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the advantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;For me the integrated setup. This is not just the server, or the
workstation, or the ltsp. Its all of them, and its all configured
ready to go. I read somewhere in the early documentation that it is
designed to be setup and managed by the Maths or Science teacher, who
doesn&#39;t necessarily know much about computers, in a small Norwegian
school. That describes me perfectly if you replace Norway with
Japan.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;What do you see as the disadvantages of Skolelinux/Debian
Edu?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The desktop is fairly plain. If you compare it with Edubuntu, who
have fun themes for children, or with distributions such as Mint, who
make the desktop beautiful. They create a good impression on people
who don&#39;t need to understand how to use any of it, but who might be
important to the school. School administrators or directors, for
instance, or parents. Even kids. Debian itself usually has ugly
default theme settings. It was my dream a few years back that some
kind of integration would allow Edubuntu to do the desktop stuff and
Debian Edu the servers, but now I realise how impossible that is.  A
second disadvantage is that if something goes wrong, or you need to
customise something, then suddenly the level of expertise required
multiplies. For example, backup wasn&#39;t working properly in Lenny. It
took me ages to learn how to set up my own server to do rsync backups.
I am afraid of anything to do with ldap, but perhaps Gosa will
help.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which free software do you use daily?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Nowadays I only use Debian on my personal computers. I have one for
studio work (I play guitar and write songs), running AV Linux
(customised Debian) a netbook running Squeeze, and a bigger laptop
still running Skolelinux Lenny workstation. I have a Tjener in my
house, that&#39;s very useful for the family photos and music.  At school
the students only use Skolelinux. (Some teachers and the office still
have windows). So that means we only use free software all day every
day. Open office, The GIMP, Firefox/Iceweasel, VLC and Audacity are
installed on every computer in school, irrespective of OS.  We also
have Koha on Debian for the library, and Apache, Moodle, b2evolution
and Etomite on Debian for the www. The firewall is Untangle.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Which strategy do you believe is the right one to use to
get schools to use free software?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Current trends are in our favour. Open source is big in industry,
and ordinary people have heard of it. The spread of Android and the
popularity of Apple have helped to weaken the impression that you have
to have Microsoft on everything. People complain to me much less about
file formats and Word than they did 5 years ago.  The Edu aspect is
also a selling point. This is all customised for schools. Where is the
Windows-edu, or the Mac-edu?  But of course the main attraction is
budget.The trick is to convince people that the quality is not
compromised when you stop paying and use free software instead. That
is one reason why I say the desktop experience is a weakness. People
are not impressed when their USB drive doesn&#39;t work, or their browser
doesn&#39;t play flash, for example.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu screencast: Mass creation of user accounts in Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_screencast__Mass_creation_of_user_accounts_in_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_screencast__Mass_creation_of_user_accounts_in_Squeeze.html</guid>
                <pubDate>Wed, 7 Mar 2012 13:40:00 +0100</pubDate>
                <description>&lt;!-- Video HTML based on http://www.diveintohtml5.net/video.html --&gt;

&lt;p&gt;One of the Debian Edu developers, Wolfgang Schweer, just created a
screen cast documenting how to create a lot of new users in LDAP on
Debian Edu Squeeze.  The video is embedded here in quarter size, and
also available from &lt;a href=&quot;http://vimeo.com/37675399&quot;&gt;vimeo&lt;/a&gt; and
download as a
&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-02-29-debian_edu_mass_create_user_accounts.ogv&quot;&gt;Ogg
Theora&lt;/a&gt; file.  Check it out below.&lt;/p&gt;

&lt;p&gt;&lt;video id=&quot;gosa-mass-user-create-movie&quot; width=&quot;256&quot; height=&quot;184&quot; preload controls&gt;
  &lt;source src=&quot;http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-02-29-debian_edu_mass_create_user_accounts.ogv&quot; type=&#39;video/ogg; codecs=&quot;theora, vorbis&quot;&#39; /&gt;
    &lt;p&gt;Download video as
      &lt;a href=&quot;http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-02-29-debian_edu_mass_create_user_accounts.ogv&quot;&gt;Ogg&lt;/a&gt;.&lt;/p&gt; 
&lt;/video&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Third release candidate of Debian Edu / Skolelinux based on Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Third_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Third_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</guid>
                <pubDate>Sun, 4 Mar 2012 18:20:00 +0100</pubDate>
                <description>&lt;p&gt;This weekend we wrapped up and published the third release
candidate for &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt; based on Squeeze.  The full announcement is
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2012/03/msg00000.html&quot;&gt;available&lt;/a&gt;
from the project announcement list.  Check it out if you
need a software solution for your school.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Stopmotion for making stop motion animations on Linux - reloaded</title>
                <link>http://people.skolelinux.org/pere/blog/Stopmotion_for_making_stop_motion_animations_on_Linux___reloaded.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Stopmotion_for_making_stop_motion_animations_on_Linux___reloaded.html</guid>
                <pubDate>Sat, 3 Mar 2012 12:50:00 +0100</pubDate>
                <description>&lt;p&gt;Many years ago, the &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux
/ Debian Edu project&lt;/a&gt; initiated a student project to create a tool
for making stop motion movies.  The proposal came from a teacher
needing such tool on Skolelinux.  The project, called &quot;stopmotion&quot;,
was manned by two extraordinary students and won a school award and a
national aware with this great project.  The project was initiated and
mentored by Herman Robak, and manned by the students Bjørn Erik Nilsen
and Fredrik Berg Kjølstad.  They got in touch with people at Aardman
Animation studio and received feedback on how professionals would like
such stopmotion tool to work, and the end result was and is used by
animators around the globe.  But as is usual after studying, both got
jobs and went elsewhere, and did not have time to properly tend to the
project, and it has been lingering for a few years now.  Until last
year...&lt;/p&gt;

&lt;p&gt;Last year some of the users got together with Herman, and moved the
project to Sourceforge and in effect restarted the project under a new
name,
&lt;a href=&quot;http://sourceforge.net/projects/linuxstopmotion/&quot;&gt;linuxstopmotion&lt;/a&gt;.
The name change was done to make it possible to find the project using
Internet search engines (try to search for &#39;stopmotion&#39; to see what I
mean). I&#39;ve been following
&lt;a href=&quot;https://lists.sourceforge.net/lists/listinfo/linuxstopmotion-community&quot;&gt;the
mailing list&lt;/a&gt; and the improvement already in place and planned for
the future is encouraging.  If you want to make stop motion movies.
Check it out. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Second release candidate of Debian Edu / Skolelinux based on Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Second_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Second_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</guid>
                <pubDate>Mon, 27 Feb 2012 14:00:00 +0100</pubDate>
                <description>&lt;p&gt;This weekend we wrapped up and published the second release
candidate for &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu /
Skolelinux&lt;/a&gt; based on Squeeze.  The full announcement did for some
reason not make it the project announcement list, but is
&lt;a href=&quot;http://lists.debian.org/debian-devel-announce/2012/02/msg00015.html&quot;&gt;available&lt;/a&gt;
from the Debian development announcement list.  Check it out if you
need a software solution for your school.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First release candidate of Debian Edu / Skolelinux based on Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/First_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</guid>
                <pubDate>Sun, 19 Feb 2012 23:10:00 +0100</pubDate>
                <description>&lt;p&gt;One week delayed due to DVD build problems, we managed today to
wrap up and publish the first release candidate for
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt; based
on Squeeze.  The full announcement is
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2012/02/msg00001.html&quot;&gt;available&lt;/a&gt;
on the project announcement list.  Check it out if you need a software
solution for your school.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to figure out which RAID disk to replace when it fail</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_figure_out_which_RAID_disk_to_replace_when_it_fail.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_figure_out_which_RAID_disk_to_replace_when_it_fail.html</guid>
                <pubDate>Tue, 14 Feb 2012 21:25:00 +0100</pubDate>
                <description>&lt;p&gt;Once in a while my home server have disk problems.  Thanks to Linux
Software RAID, I have not lost data yet (but
&lt;a href=&quot;http://comments.gmane.org/gmane.linux.raid/34532&quot;&gt;I was
close&lt;/a&gt; this summer :).  But once a disk is starting to behave
funny, a practical problem present itself.  How to get from the Linux
device name (like /dev/sdd) to something that can be used to identify
the disk when the computer is turned off?  In my case I have SATA
disks with a unique ID printed on the label.  All I need is a way to
figure out how to query the disk to get the ID out.&lt;/p&gt;

&lt;p&gt;After fumbling a bit, I
&lt;a href=&quot;http://www.cyberciti.biz/faq/linux-getting-scsi-ide-harddisk-information/&quot;&gt;found
that hdparm -I&lt;/a&gt; will report the disk serial number, which is
printed on the disk label.  The following (almost) one-liner can be
used to look up the ID of all the failed disks:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
for d in $(cat /proc/mdstat |grep &#39;(F)&#39;|tr &#39; &#39; &quot;\n&quot;|grep &#39;(F)&#39;|cut -d\[ -f1|sort -u);
do
    printf &quot;Failed disk $d: &quot;
    hdparm -I /dev/$d |grep &#39;Serial Num&#39;
done
&lt;/blockquote&gt;&lt;/pre&gt;

&lt;p&gt;Putting it here to make sure I do not have to search for it the
next time, and in case other find it useful.&lt;/p&gt;

&lt;p&gt;At the moment I have two failing disk. :(&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
Failed disk sdd1:       Serial Number:      WD-WCASJ1860823
Failed disk sdd2:       Serial Number:      WD-WCASJ1860823
Failed disk sde2:       Serial Number:      WD-WCASJ1840589
&lt;/blockquote&gt;&lt;/pre&gt;

&lt;p&gt;The last time I had failing disks, I added the serial number on
labels I printed and stuck on the short sides of each disk, to be able
to figure out which disk to take out of the box without having to
remove each disk to look at the physical vendor label.  The vendor
label is at the top of the disk, which is hidden when the disks are
mounted inside my box.&lt;/p&gt;

&lt;p&gt;I really wish the check_linux_raid Nagios plugin for checking Linux
Software RAID in the
&lt;a href=&quot;http://packages.qa.debian.org/n/nagios-plugins.html&quot;&gt;nagios-plugins-standard&lt;/a&gt;
debian package would look up this value automatically, as it would
make the plugin a lot more useful when my disks fail.  At the moment
it only report a failure when there are no more spares left (it really
should warn as soon as a disk is failing), and it do not tell me which
disk(s) is failing when the RAID is running short on disks.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Automatic proxy configuration with Debian Edu / Skolelinux</title>
                <link>http://people.skolelinux.org/pere/blog/Automatic_proxy_configuration_with_Debian_Edu___Skolelinux.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Automatic_proxy_configuration_with_Debian_Edu___Skolelinux.html</guid>
                <pubDate>Mon, 13 Feb 2012 23:40:00 +0100</pubDate>
                <description>&lt;p&gt;New in the Squeeze version of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt; is the
ability for clients to automatically configure their proxy settings
based on their environment.  We want all systems on the client to use
the WPAD based proxy definition fetched from &lt;tt&gt;http://wpad/wpad.dat&lt;/tt&gt;, to
allow sites to control the proxy setting from a central place and make
sure clients do not have hard coded proxy settings.  The schools can
change the global proxy setting by editing
&lt;tt&gt;tjener:/etc/debian-edu/www/wpad.dat&lt;/tt&gt; and the change propagate
to all Debian Edu clients in the network.&lt;/p&gt;

&lt;p&gt;The problem is that some systems do not understand the WPAD system.
In other words, how do one get from a WPAD file like this (this is a
simple one, they can run arbitrary code):&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
function FindProxyForURL(url, host)
{
   if (!isResolvable(host) ||
       isPlainHostName(host) ||
       dnsDomainIs(host, &quot;.intern&quot;))
      return &quot;DIRECT&quot;;
   else
      return &quot;PROXY webcache:3128; DIRECT&quot;;
}
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;to a proxy setting in the process environment looking like this:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
http_proxy=http://webcache:3128/
ftp_proxy=http://webcache:3128/
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;To do this conversion I developed a perl script that will execute
the javascript fragment in the WPAD file and return the proxy that
would be used for
&lt;tt&gt;&lt;a href=&quot;http://www.debian.org/&quot;&gt;http://www.debian.org/&lt;/a&gt;&lt;/tt&gt;,
and insert this extracted proxy URL in &lt;tt&gt;/etc/environment&lt;/tt&gt; and
&lt;tt&gt;/etc/apt/apt.conf&lt;/tt&gt;.  The perl script wpad-extract work just
fine in Squeeze, but in Wheezy the library it need to run the
javascript code is &lt;a href=&quot;http://bugs.debian.org/631045&quot;&gt;no longer
able to build&lt;/a&gt; because the C library it depended on is now a C++
library.  I hope someone find a solution to that problem before Wheezy
is frozen.  An alternative would be for us to rewrite wpad-extract to
use some other javascript library currently working in Wheezy, but no
known alternative is known at the moment.&lt;/p&gt;

&lt;p&gt;This automatic proxy system allow the roaming workstation (aka
laptop) setup in Debian Edu/Squeeze to use the proxy when the laptop
is connected to the backbone network in a Debian Edu setup, and to
automatically use any proxy present and announced using the WPAD
feature when it is connected to other networks.  And if no proxy is
announced, direct connections will be used instead.&lt;/p&gt;

&lt;p&gt;Silently using a proxy announced on the network might be a privacy
or security problem.  But those controlling DHCP and DNS on a network
could just as easily set up a transparent proxy, and force all HTTP
and FTP connections to use a proxy anyway, so I consider that
distinction to be academic.  If you are afraid of using the wrong
proxy, you should avoid connecting to the network in question in the
first place.  In Debian Edu, the proxy setup is updated using dhcp and
ifupdown hooks, to make sure the configuration is updated every time
the network setup changes.&lt;/p&gt;

&lt;p&gt;The WPAD system is documented in a
&lt;a href=&quot;http://tools.ietf.org/html/draft-ietf-wrec-wpad-01&quot;&gt;IETF
draft&lt;/a&gt; and a
&lt;a href=&quot;http://en.wikipedia.org/wiki/Web_Proxy_Autodiscovery_Protocol&quot;&gt;Wikipedia
page&lt;/a&gt; for those that want to learn more.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Saving power with Debian Edu / Skolelinux using shutdown-at-night</title>
                <link>http://people.skolelinux.org/pere/blog/Saving_power_with_Debian_Edu___Skolelinux_using_shutdown_at_night.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Saving_power_with_Debian_Edu___Skolelinux_using_shutdown_at_night.html</guid>
                <pubDate>Sun, 5 Feb 2012 09:45:00 +0100</pubDate>
                <description>&lt;p&gt;Since the Lenny version of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt;, a
feature to save power have been included.  It is as simple as it is
practical: Shut down unused clients at night, and turn them on again
in the morning.  This is done using the
&lt;a href=&quot;http://packages.qa.debian.org/s/shutdown-at-night.html&quot;&gt;shutdown-at-night&lt;/a&gt; Debian package.&lt;/p&gt;

&lt;p&gt;To enable this feature on a client, the machine need to be added to
the netgroup shutdown-at-night-hosts.  For Debian Edu, this is done in
LDAP, and once this is in place, the machine in question will check
every hour from 16:00 until 06:00 to see if the machine is unused, and
shut it down if it is.  If the hardware in question is supported by
the
&lt;a href=&quot;http://packages.qa.debian.org/n/nvram-wakeup.html&quot;&gt;nvram-wakeup&lt;/a&gt;
package, the BIOS is told to turn the machine back on around 07:00 +-
10 minutes.  If this isn&#39;t working, one can configure wake-on-lan to
try to turn on the client.  The wake-on-lan option is only documented
and not enabled by default in Debian Edu.&lt;/p&gt;

&lt;p&gt;It is important to not turn all machines on at once, as this can
blow a fuse if several computers are connected to the same fuse like
the common setup for a classroom.  The nvram-wakeup method only work
for machines with a functioning hardware/BIOS clock.  I&#39;ve seen old
machines where the BIOS battery were dead and the hardware clock were
starting from 0 (or was it 1990?) every boot.  If you have one of
those, you have to turn on the computer manually.&lt;/p&gt;

&lt;p&gt;The shutdown-at-night package is completely self contained, and can
also be used outside the Debian Edu environment.  For those without a
central LDAP server with netgroups, one can instead touch the file
&lt;tt&gt;/etc/shutdown-at-night/shutdown-at-night&lt;/tt&gt; to enable it.
Perhaps you too can use it to save some power?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Third beta version of Debian Edu / Skolelinux based on Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Third_beta_version_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Third_beta_version_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</guid>
                <pubDate>Sat, 4 Feb 2012 13:25:00 +0100</pubDate>
                <description>&lt;p&gt;I am happy to announce that finally we managed today to wrap up and
publish the third beta version of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt; based
on Squeeze.  If you want to test a LDAP backed Kerberos server with
out of the box PXE configuration for running diskless machines and
installing new machines, check it out.  If you need a software
solution for your school, check it out too.  The full announcement is
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2012/02/msg00000.html&quot;&gt;available&lt;/a&gt;
on the project announcement list.&lt;/p&gt;

&lt;p&gt;I am very happy to report these changes and improvements since
beta2 (there are more, see announcement for full list):&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;It is now possible to change the pre-configured IP subnet from
  10.0.0.0/8 to something else by using the subnet-change tool after
  the installation.&lt;/li&gt;

&lt;li&gt;Too full partitions are now automatically extended on the Main
  Server, based on the rules specified in /etc/fsautoresizetab.&lt;/li&gt;

&lt;li&gt;The CUPS queues are now automatically flushed every night, and all
  disabled queues are restarted every hour.  This should cut down on
  the amount of manual administration needed for printers.&lt;/li&gt;

&lt;li&gt;The set of initial users have been changed.  Now a personal user
  for the local system administrator is created during installation
  instead of the previously created localadmin and super-admin users,
  and this user is granted administrative privileges using group
  membership.  This reduces the number of passwords one need to keep
  up to date on the system.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;The new main server seem to work so well that I am testing it as my
private DNS/LDAP/Kerberos/PXE/LTSP server at home.  I will use it look
for issues we could fix to polish Debian Edu even further before the
final Squeeze release is published.&lt;/p&gt;

&lt;p&gt;Next weekend the project organise a
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2012/01/msg00001.html&quot;&gt;developer
gathering&lt;/a&gt; in Oslo.  We will continue the work on the Squeeze
version, and start initial planning for the Wheezy version.  Perhaps I
will see you there?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Handling non-free firmware in Debian Edu/Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Handling_non_free_firmware_in_Debian_Edu_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Handling_non_free_firmware_in_Debian_Edu_Squeeze.html</guid>
                <pubDate>Fri, 27 Jan 2012 23:30:00 +0100</pubDate>
                <description>&lt;p&gt;With some computer hardware, one need non-free firmware blobs.
This is the sad fact of todays computers.  In the next version of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt; based
on Squeeze, we provide several scripts and modifications to make
firmware blobs easier to handle.  The common use case I run into is a
laptop with a wireless network card requiring non-free firmware to
work, but there are other use cases as well.&lt;/p&gt;

&lt;p&gt;First and foremost, Debian Edu provide ISO images for DVD and CD
with all firmware packages in the Debian sections main and non-free
included, to ensure debian-installer find and can install all of them
during installation.  This take care firmware for network devices used
by the installer when installing from from local media.  But for
example multimedia devices are not activated in the installer and are
not taken care of by this.&lt;/p&gt;

&lt;p&gt;For non-network devices, we provide the script
&lt;tt&gt;/usr/share/debian-edu-config/tools/auto-addfirmware&lt;/tt&gt; which
search through the &lt;tt&gt;dmesg&lt;/tt&gt; output for drivers requesting extra
firmware.  The firmware file name is looked up in the Contents-ARCH.gz
file available in the package repository, and the packages providing
the requested firmware file(s) is installed.  I have proposed to do
something similar in debian-installer (BTS report
&lt;a href=&quot;http://bugs.debian.org/655507&quot;&gt;#655507&lt;/a&gt;), to allow PXE
installs of Debian to handle firmware installation better.  Run the
script as root from the command line to fetch and install the needed
firmware packages.&lt;/p&gt;

&lt;p&gt;Debian Edu provide PXE installation of Debian out of the box, and
because some machines need firmware to get their network cards
working, the installation initrd some times need extra firmware
included to be able to install at all.  To fill the PXE installation
initrd with extra firmware, the
&lt;tt&gt;/usr/share/debian-edu-config/tools/pxe-addfirmware&lt;/tt&gt; script is
provided.  Again, just run it as root on the command line to fill the
PXE initrd with firmware packages.&lt;/p&gt;

&lt;p&gt;Last, some LTSP clients might also need firmware to get their
network cards working.  For this,
&lt;tt&gt;/usr/share/debian-edu-config/tools/ltsp-addfirmware&lt;/tt&gt; is
provided to update the LTSP initrd with firmware blobs.  It is used
the same way as the other firmware related tools.&lt;/p&gt;

&lt;p&gt;At the moment, we do not run any of these during installation.  We
do not know if this is acceptable for the local administrator to use
non-free software, and it is their choice.&lt;/p&gt;

&lt;p&gt;We plan to release beta3 this weekend.  You might want to give it a
try.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Setting up a new school with Debian Edu/Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Setting_up_a_new_school_with_Debian_Edu_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Setting_up_a_new_school_with_Debian_Edu_Squeeze.html</guid>
                <pubDate>Wed, 25 Jan 2012 21:00:00 +0100</pubDate>
                <description>&lt;p&gt;The next version of &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu
/ Skolelinux&lt;/a&gt; will include a new tool
&lt;tt&gt;sitesummary2ldapdhcp&lt;/tt&gt;, which can be used to quickly set up all
the computers in a school without much manual labour.  Here is a short
summary on how to use it to set up a new school.&lt;/p&gt;

&lt;p&gt;First, install a combined Main Server and Thin Client Server as the
central server in the network.  Next, PXE boot all the client machines
as thin clients and wait 5 minutes after the last client booted to
allow the clients to report their existence to the central server.  When
this is done, log on to the central server and run
&lt;tt&gt;sitesummary2ldapdhcp -a&lt;/tt&gt; in the &lt;tt&gt;konsole&lt;/tt&gt; to use the
collected information to generate system objects in LDAP.  The output
will look similar to this:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
% sitesummary2ldapdhcp -a
info: Updating machine tjener.intern [10.0.2.2] id ether-00:01:02:03:04:05.
info: Create GOsa machine for auto-mac-00-01-02-03-04-06 [10.0.16.20] id ether-00:01:02:03:04:06.

Enter password if you want to activate these changes, and ^c to abort.

Connecting to LDAP as cn=admin,ou=ldap-access,dc=skole,dc=skolelinux,dc=no
enter password: *******
% 
&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;After providing the LDAP administrative password (the same as the
root password set during installation), the LDAP database will be
populated with system objects for each PXE booted machine with
automatically generated names.  The final step to set up the school is
then to log into &lt;a href=&quot;https://oss.gonicus.de/labs/gosa/&quot;&gt;GOsa&lt;/a&gt;,
the web based user, group and system administration system to change
system names, add systems to the correct host groups and finally
enable DHCP and DNS for the systems.  All clients that should be used
as diskless workstations should be added to the workstation-hosts
group.  After this is done, all computers can be booted again via PXE
and get their assigned names and group based configuration
automatically.&lt;/p&gt;

&lt;p&gt;We plan to release beta3 with the updated version of this feature
enabled this weekend.  You might want to give it a try.&lt;/p&gt;

&lt;p&gt;Update 2012-01-28: When calling sitesummary2ldapdhcp to add new
hosts, one need to add the option -a.  I forgot to mention this in my
original text, and have added it to the text now.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Changing the default Iceweasel start page in Debian Edu/Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Changing_the_default_Iceweasel_start_page_in_Debian_Edu_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Changing_the_default_Iceweasel_start_page_in_Debian_Edu_Squeeze.html</guid>
                <pubDate>Tue, 10 Jan 2012 15:30:00 +0100</pubDate>
                <description>&lt;p&gt;In the Squeeze version of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt; soon
to be released, users of the system will get their default browser
start page set from LDAP, allowing the system administrator to point
all users to the school web page by updating one setting in LDAP.  In
addition to setting the default start page when a machine boots, users
are shown the same page as a welcome page when they log in for the
first time.&lt;/p&gt;

&lt;p&gt;The LDAP object dc=skole,dc=skolelinux,dc=no have an attribute
labeledURI with &quot;http://www/ LDAP for Debian Edu/Skolelinux&quot; as the
default content.  By changing this value to another URL, all users get
to see the page behind this new URL.&lt;/p&gt;

&lt;p&gt;An easy way to update it is by using the ldapvi tool.  It can be
called as &quot;&lt;tt&gt;ldapvi -ZD &#39;(cn=admin)&#39;&lt;/tt&gt;&#39; to update LDAP with the
new setting.&lt;/p&gt;

&lt;p&gt;We have written the code to adjust the default start page and show
the welcome page, and I wonder if there is an easier way to do this
from within Iceweasel instead.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Second beta version of Debian Edu / Skolelinux based on Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Second_beta_version_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Second_beta_version_of_Debian_Edu___Skolelinux_based_on_Squeeze.html</guid>
                <pubDate>Sat, 7 Jan 2012 22:50:00 +0100</pubDate>
                <description>&lt;p&gt;I am happy to announce that today we managed to wrap up and publish
the second beta version of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt;.  If
you want to test a LDAP backed Kerberos server with out of the box PXE
configuration for running diskless machines and installing new
machines, check it out.  If you need a software solution for your
school, check it out too.  The full announcement is
&lt;a href=&quot;http://lists.debian.org/debian-edu-announce/2012/01/msg00000.html&quot;&gt;available&lt;/a&gt;
on the project announcement list.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Fixing an hanging debian installer for Debian Edu</title>
                <link>http://people.skolelinux.org/pere/blog/Fixing_an_hanging_debian_installer_for_Debian_Edu.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Fixing_an_hanging_debian_installer_for_Debian_Edu.html</guid>
                <pubDate>Tue, 3 Jan 2012 11:25:00 +0100</pubDate>
                <description>&lt;p&gt;During christmas, I have been working getting the next version of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu / Skolelinux&lt;/a&gt; ready
for release.  The initial problem I looked at was particularly
interesting.&lt;/p&gt;

&lt;P&gt;The installer would hang at the end when it was doing it
post-installation configuration, and whatevery I did to try to find
the cause and fix it always worked while I tested it, but never when I
integrated it into the installer and ran the installation from
scratch.  I would try to restart processes, close file descriptors,
remove or create files, and the installer would always unblock and
wrap up its tasks.&lt;/p&gt;

&lt;p&gt;Eventually the cause was found.  The kernel was simply running out
of entropy, causing the Kerberos setup to hang waiting for more.
Pressing keys was adding entropy to the kernel, and thus all my tries
to fix the problem worked not because what I was typing to fix it, but
because I was typing.&lt;/P&gt;

&lt;p&gt;The fix I implemented was to add a background process looking at
the level of entropy in the kernel (by checking
/proc/sys/kernel/random/entropy_avail), and if it was too small, the
installer will flush the kernel file buffers and do &#39;find /&#39; to
generate some disk IO.  Disk IO generate entropy in the kernel, and is
one of the few things that can be initated from within the system to
generate entropy.&lt;/p&gt;

&lt;p&gt;The fix is in
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/Documentation/Squeeze/Installation&quot;&gt;beta1
of the Debian Edu/Squeeze&lt;/a&gt; version, and we
&lt;a href=&quot;http://wiki.debian.org/DebianEdu&quot;&gt;welcome more testers and
developers&lt;/a&gt;.  We plan to release beta2 this weekend.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Automatically upgrading server firmware on Dell PowerEdge</title>
                <link>http://people.skolelinux.org/pere/blog/Automatically_upgrading_server_firmware_on_Dell_PowerEdge.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Automatically_upgrading_server_firmware_on_Dell_PowerEdge.html</guid>
                <pubDate>Mon, 21 Nov 2011 12:00:00 +0100</pubDate>
                <description>&lt;p&gt;At work we have heaps of servers.  I believe the total count is
around 1000 at the moment.  To be able to get help from the vendors
when something go wrong, we want to keep the firmware on the servers
up to date.  If the firmware isn&#39;t the latest and greatest, the
vendors typically refuse to start debugging any problems until the
firmware is upgraded.  So before every reboot, we want to upgrade the
firmware, and we would really like everyone handling servers at the
university to do this themselves when they plan to reboot a machine.
For that to happen we at the unix server admin group need to provide
the tools to do so.&lt;/p&gt;

&lt;p&gt;To make firmware upgrading easier, I am working on a script to
fetch and install the latest firmware for the servers we got.  Most of
our hardware are from Dell and HP, so I have focused on these servers
so far.  This blog post is about the Dell part.&lt;/P&gt;

&lt;p&gt;On the Dell FTP site I was lucky enough to find
&lt;a href=&quot;ftp://ftp.us.dell.com/catalog/Catalog.xml.gz&quot;&gt;an XML file&lt;/a&gt;
with firmware information for all 11th generation servers, listing
which firmware should be used on a given model and where on the FTP
site I can find it.  Using a simple perl XML parser I can then
download the shell scripts Dell provides to do firmware upgrades from
within Linux and reboot when all the firmware is primed and ready to
be activated on the first reboot.&lt;/p&gt;

&lt;p&gt;This is the Dell related fragment of the perl code I am working on.
Are there anyone working on similar tools for firmware upgrading all
servers at a site?  Please get in touch and lets share resources.&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
#!/usr/bin/perl
use strict;
use warnings;
use File::Temp qw(tempdir);
BEGIN {
    # Install needed RHEL packages if missing
    my %rhelmodules = (
        &#39;XML::Simple&#39; =&gt; &#39;perl-XML-Simple&#39;,
        );
    for my $module (keys %rhelmodules) {
        eval &quot;use $module;&quot;;
        if ($@) {
            my $pkg = $rhelmodules{$module};
            system(&quot;yum install -y $pkg&quot;);
            eval &quot;use $module;&quot;;
        }
    }
}
my $errorsto = &#39;pere@hungry.com&#39;;

upgrade_dell();

exit 0;

sub run_firmware_script {
    my ($opts, $script) = @_;
    unless ($script) {
        print STDERR &quot;fail: missing script name\n&quot;;
        exit 1
    }
    print STDERR &quot;Running $script\n\n&quot;;

    if (0 == system(&quot;sh $script $opts&quot;)) { # FIXME correct exit code handling
        print STDERR &quot;success: firmware script ran succcessfully\n&quot;;
    } else {
        print STDERR &quot;fail: firmware script returned error\n&quot;;
    }
}

sub run_firmware_scripts {
    my ($opts, @dirs) = @_;
    # Run firmware packages
    for my $dir (@dirs) {
        print STDERR &quot;info: Running scripts in $dir\n&quot;;
        opendir(my $dh, $dir) or die &quot;Unable to open directory $dir: $!&quot;;
        while (my $s = readdir $dh) {
            next if $s =~ m/^\.\.?/;
            run_firmware_script($opts, &quot;$dir/$s&quot;);
        }
        closedir $dh;
    }
}

sub download {
    my $url = shift;
    print STDERR &quot;info: Downloading $url\n&quot;;
    system(&quot;wget --quiet \&quot;$url\&quot;&quot;);
}

sub upgrade_dell {
    my @dirs;
    my $product = `dmidecode -s system-product-name`;
    chomp $product;

    if ($product =~ m/PowerEdge/) {

        # on RHEL, these pacakges are needed by the firwmare upgrade scripts
        system(&#39;yum install -y compat-libstdc++-33.i686 libstdc++.i686 libxml2.i686 procmail&#39;);

        my $tmpdir = tempdir(
            CLEANUP =&gt; 1
            );
        chdir($tmpdir);
        fetch_dell_fw(&#39;catalog/Catalog.xml.gz&#39;);
        system(&#39;gunzip Catalog.xml.gz&#39;);
        my @paths = fetch_dell_fw_list(&#39;Catalog.xml&#39;);
        # -q is quiet, disabling interactivity and reducing console output
        my $fwopts = &quot;-q&quot;;
        if (@paths) {
            for my $url (@paths) {
                fetch_dell_fw($url);
            }
            run_firmware_scripts($fwopts, $tmpdir);
        } else {
            print STDERR &quot;error: Unsupported Dell model &#39;$product&#39;.\n&quot;;
            print STDERR &quot;error: Please report to $errorsto.\n&quot;;
        }
        chdir(&#39;/&#39;);
    } else {
        print STDERR &quot;error: Unsupported Dell model &#39;$product&#39;.\n&quot;;
        print STDERR &quot;error: Please report to $errorsto.\n&quot;;
    }
}

sub fetch_dell_fw {
    my $path = shift;
    my $url = &quot;ftp://ftp.us.dell.com/$path&quot;;
    download($url);
}

# Using ftp://ftp.us.dell.com/catalog/Catalog.xml.gz, figure out which
# firmware packages to download from Dell.  Only work for Linux
# machines and 11th generation Dell servers.
sub fetch_dell_fw_list {
    my $filename = shift;

    my $product = `dmidecode -s system-product-name`;
    chomp $product;
    my ($mybrand, $mymodel) = split(/\s+/, $product);

    print STDERR &quot;Finding firmware bundles for $mybrand $mymodel\n&quot;;

    my $xml = XMLin($filename);
    my @paths;
    for my $bundle (@{$xml-&gt;{SoftwareBundle}}) {
        my $brand = $bundle-&gt;{TargetSystems}-&gt;{Brand}-&gt;{Display}-&gt;{content};
        my $model = $bundle-&gt;{TargetSystems}-&gt;{Brand}-&gt;{Model}-&gt;{Display}-&gt;{content};
        my $oscode;
        if (&quot;ARRAY&quot; eq ref $bundle-&gt;{TargetOSes}-&gt;{OperatingSystem}) {
            $oscode = $bundle-&gt;{TargetOSes}-&gt;{OperatingSystem}[0]-&gt;{osCode};
        } else {
            $oscode = $bundle-&gt;{TargetOSes}-&gt;{OperatingSystem}-&gt;{osCode};
        }
        if ($mybrand eq $brand &amp;&amp; $mymodel eq $model &amp;&amp; &quot;LIN&quot; eq $oscode)
        {
            @paths = map { $_-&gt;{path} } @{$bundle-&gt;{Contents}-&gt;{Package}};
        }
    }
    for my $component (@{$xml-&gt;{SoftwareComponent}}) {
        my $componenttype = $component-&gt;{ComponentType}-&gt;{value};

        # Drop application packages, only firmware and BIOS
        next if &#39;APAC&#39; eq $componenttype;

        my $cpath = $component-&gt;{path};
        for my $path (@paths) {
            if ($cpath =~ m%/$path$%) {
                push(@paths, $cpath);
            }
        }
    }
    return @paths;
}
&lt;/pre&gt;

&lt;p&gt;The code is only tested on RedHat Enterprise Linux, but I suspect
it could work on other platforms with some tweaking.  Anyone know a
index like Catalog.xml is available from HP for HP servers?  At the
moment I maintain a similar list manually and it is quickly getting
outdated.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Free e-book kiosk for the public libraries?</title>
                <link>http://people.skolelinux.org/pere/blog/Free_e_book_kiosk_for_the_public_libraries_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Free_e_book_kiosk_for_the_public_libraries_.html</guid>
                <pubDate>Fri, 7 Oct 2011 19:20:00 +0200</pubDate>
                <description>&lt;p&gt;Here in Norway the public libraries are debating with the
publishing houses how to handle electronic books.  Surprisingly, the
libraries seem to be willing to accept digital restriction mechanisms
(DRM) on books and renting e-books with artificial scarcity from the
publishing houses.  Time limited renting (2-3 years) is one proposed
model, and only allowing X borrowers for each book is another.
Personally I find it amazing that libraries are even considering such
models.&lt;/p&gt;

&lt;p&gt;Anyway, while reading &lt;a href=&quot;http://boklaben.no/?p=220&quot;&gt;part of
this debate&lt;/a&gt;, it occurred to me that someone should present a more
sensible approach to the libraries, to allow its borrowers to get used
to a better model.  The idea is simple:&lt;/p&gt;

&lt;p&gt;Create a computer system for the libraries, either in the form of a
Live DVD or a installable distribution, that provide a simple kiosk
solution to hand out free e-books.  As a start, the books distributed
by &lt;a href=&quot;http://www.gutenberg.org/&quot;&gt;Project Gutenberg&lt;/a&gt; (about
36,000 books), &lt;a href=&quot;http://runeberg.org/&quot;&gt;Project Runenberg&lt;/a&gt;
(1149 books) and &lt;a href=&quot;http://www.archive.org/details/texts&quot;&gt;The
Internet Archive&lt;/a&gt; (3,033,748 books) could be included, but any book
where the copyright has expired or with a free licence could be
distributed.&lt;/p&gt;

&lt;p&gt;The computer system would make it easy to:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Copy e-books into a USB stick, reading tablets, cell phones and
  other relevant equipment.&lt;/li&gt;

&lt;li&gt;Show the books for reading on the the screen in the library.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;In addition to such kiosk solution, there should probably be a web
site as well to allow people easy access to these books without
visiting the library.  The site would be the distribution point for
the kiosk systems, which would connect regularly to fetch any new
books available.&lt;/p&gt;

&lt;p&gt;Are there anyone working on a system like this?  I guess it would
fit any library in the world, and not just the Norwegian public
libraries. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Ripping problematic DVDs using dvdbackup and genisoimage</title>
                <link>http://people.skolelinux.org/pere/blog/Ripping_problematic_DVDs_using_dvdbackup_and_genisoimage.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Ripping_problematic_DVDs_using_dvdbackup_and_genisoimage.html</guid>
                <pubDate>Sat, 17 Sep 2011 20:20:00 +0200</pubDate>
                <description>&lt;p&gt;For convenience, I want to store copies of all my DVDs on my file
server.  It allow me to save shelf space flat while still having my
movie collection easily available.  It also make it possible to let
the kids see their favourite DVDs without wearing the physical copies
down.  I prefer to store the DVDs as ISOs to keep the DVD menu and
subtitle options intact.  It also ensure that the entire film is one
file on the disk.  As this is for personal use, the ripping is
perfectly legal here in Norway.&lt;/p&gt;

&lt;p&gt;Normally I rip the DVDs using dd like this:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
# apt-get install lsdvd
title=$(lsdvd 2&gt;/dev/null|awk &#39;/Disc Title: / {print $3}&#39;)
dd if=/dev/dvd of=/storage/dvds/$title.iso bs=1M
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;But some DVDs give a input/output error when I read it, and I have
been looking for a better alternative.  I have no idea why this I/O
error occur, but suspect my DVD drive, the Linux kernel driver or
something fishy with the DVDs in question.  Or perhaps all three.&lt;/p&gt;

&lt;p&gt;Anyway, I believe I found a solution today using dvdbackup and
genisoimage.  This script gave me a working ISO for a problematic
movie by first extracting the DVD file system and then re-packing it
back as an ISO.

&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
# apt-get install lsdvd dvdbackup genisoimage
set -e
tmpdir=/storage/dvds/
title=$(lsdvd 2&gt;/dev/null|awk &#39;/Disc Title: / {print $3}&#39;)
dvdbackup -i /dev/dvd -M -o $tmpdir -n$title
genisoimage -dvd-video -o $tmpdir/$title.iso $tmpdir/$title
rm -rf $tmpdir/$title
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;Anyone know of a better way available in Debian/Squeeze?&lt;/p&gt;

&lt;p&gt;Update 2011-09-18: I got a tip from Konstantin Khomoutov about the
readom program from the wodim package.  It is specially written to
read optical media, and is called like this: &lt;tt&gt;readom dev=/dev/dvd
f=image.iso&lt;/tt&gt;.  It got 6 GB along with the problematic Cars DVD
before it failed, and failed right away with a Timmy Time DVD.&lt;/p&gt;

&lt;p&gt;Next, I got a tip from Bastian Blank about
&lt;a href=&quot;http://bblank.thinkmo.de/blog/new-software-python-dvdvideo&quot;&gt;his
program python-dvdvideo&lt;/a&gt;, which seem to be just what I am looking
for.  Tested it with my problematic Timmy Time DVD, and it succeeded
creating a ISO image.  The git source built and installed just fine in
Squeeze, so I guess this will be my tool of choice in the future.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How is booting into runlevel 1 different from single user boots?</title>
                <link>http://people.skolelinux.org/pere/blog/How_is_booting_into_runlevel_1_different_from_single_user_boots_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_is_booting_into_runlevel_1_different_from_single_user_boots_.html</guid>
                <pubDate>Thu, 4 Aug 2011 12:40:00 +0200</pubDate>
                <description>&lt;p&gt;Wouter Verhelst have some
&lt;a href=&quot;http://grep.be/blog/en/retorts/pere_kubuntu_boot&quot;&gt;interesting
comments and opinions&lt;/a&gt; on my blog post on
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/What_should_start_from__etc_rcS_d__in_Debian____almost_nothing.html&quot;&gt;the
need to clean up /etc/rcS.d/ in Debian&lt;/a&gt; and my blog post about
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/What_is_missing_in_the_Debian_desktop__or_why_my_parents_use_Kubuntu.html&quot;&gt;the
default KDE desktop in Debian&lt;/a&gt;.  I only have time to address one
small piece of his comment now, and though it best to address the
misunderstanding he bring forward:&lt;/p&gt;

&lt;p&gt;&lt;blockquote&gt;
Currently, a system admin has four options: [...] boot to a
single-user system (by adding &#39;single&#39; to the kernel command line;
this runs rcS and rc1 scripts)
&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;This make me believe Wouter believe booting into single user mode
and booting into runlevel 1 is the same.  I am not surprised he
believe this, because it would make sense and is a quite sensible
thing to believe.  But because the boot in Debian is slightly broken,
runlevel 1 do not work properly and it isn&#39;t the same as single user
mode.  I&#39;ll try to explain what is actually happing, but it is a bit
hard to explain.&lt;/p&gt;

&lt;p&gt;Single user mode is defined like this in /etc/inittab:
&quot;&lt;tt&gt;~~:S:wait:/sbin/sulogin&lt;/tt&gt;&quot;.  This means the only thing that is
executed in single user mode is sulogin.  Single user mode is a boot
state &quot;between&quot; the runlevels, and when booting into single user mode,
only the scripts in /etc/rcS.d/ are executed before the init process
enters the single user state.  When switching to runlevel 1, the state
is in fact not ending in runlevel 1, but it passes through runlevel 1
and end up in the single user mode (see /etc/rc1.d/S03single, which
runs &quot;init -t1 S&quot; to switch to single user mode at the end of runlevel
1.  It is confusing that the &#39;S&#39; (single user) init mode is not the
mode enabled by /etc/rcS.d/ (which is more like the initial boot
mode).&lt;/p&gt;

&lt;p&gt;This summary might make it clearer.  When booting for the first
time into single user mode, the following commands are executed:
&quot;&lt;tt&gt;/etc/init.d/rc S; /sbin/sulogin&lt;/tt&gt;&quot;.  When booting into
runlevel 1, the following commands are executed: &quot;&lt;tt&gt;/etc/init.d/rc
S; /etc/init.d/rc 1; /sbin/sulogin&lt;/tt&gt;&quot;.  A problem show up when
trying to continue after visiting single user mode.  Not all services
are started again as they should, causing the machine to end up in an
unpredicatble state.  This is why Debian admins recommend rebooting
after visiting single user mode.&lt;/p&gt;

&lt;p&gt;A similar problem with runlevel 1 is caused by the amount of
scripts executed from /etc/rcS.d/.  When switching from say runlevel 2
to runlevel 1, the services started from /etc/rcS.d/ are not properly
stopped when passing through the scripts in /etc/rc1.d/, and not
started again when switching away from runlevel 1 to the runlevels
2-5.  I believe the problem is best fixed by moving all the scripts
out of /etc/rcS.d/ that are not &lt;strong&gt;required&lt;/strong&gt; to get a
functioning single user mode during boot.&lt;/p&gt;

&lt;p&gt;I have spent several years investigating the Debian boot system,
and discovered this problem a few years ago.  I suspect it originates
from when sysvinit was introduced into Debian, a long time ago.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>What should start from /etc/rcS.d/ in Debian? - almost nothing</title>
                <link>http://people.skolelinux.org/pere/blog/What_should_start_from__etc_rcS_d__in_Debian____almost_nothing.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_should_start_from__etc_rcS_d__in_Debian____almost_nothing.html</guid>
                <pubDate>Sat, 30 Jul 2011 14:00:00 +0200</pubDate>
                <description>&lt;p&gt;In the Debian boot system, several packages include scripts that
are started from /etc/rcS.d/.  In fact, there is a bite more of them
than make sense, and this causes a few problems.  What kind of
problems, you might ask.  There are at least two problems.  The first
is that it is not possible to recover a machine after switching to
runlevel 1.  One need to actually reboot to get the machine back to
the expected state.  The other is that single user boot will sometimes
run into problems because some of the subsystems are activated before
the root login is presented, causing problems when trying to recover a
machine from a problem in that subsystem.  A minor additional point is
that moving more scripts out of rcS.d/ and into the other rc#.d/
directories will increase the amount of scripts that can run in
parallel during boot, and thus decrease the boot time.&lt;/p&gt;

&lt;p&gt;So, which scripts should start from rcS.d/.  In short, only the
scripts that _have_ to execute before the root login prompt is
presented during a single user boot should go there.  Everything else
should go into the numeric runlevels.  This means things like
lm-sensors, fuse and x11-common should not run from rcS.d, but from
the numeric runlevels.  Today in Debian, there are around 115 init.d
scripts that are started from rcS.d/, and most of them should be moved
out.  Do your package have one of them?  Please help us make single
user and runlevel 1 better by moving it.&lt;/p&gt;

&lt;p&gt;Scripts setting up the screen, keyboard, system partitions
etc. should still be started from rcS.d/, but there is for example no
need to have the network enabled before the single user login prompt
is presented.&lt;/p&gt;

&lt;p&gt;As always, things are not so easy to fix as they sound.  To keep
Debian systems working while scripts migrate and during upgrades, the
scripts need to be moved from rcS.d/ to rc2.d/ in reverse dependency
order, ie the scripts that nothing in rcS.d/ depend on can be moved,
and the next ones can only be moved when their dependencies have been
moved first.  This migration must be done sequentially while we ensure
that the package system upgrade packages in the right order to keep
the system state correct.  This will require some coordination when it
comes to network related packages, but most of the packages with
scripts that should migrate do not have anything in rcS.d/ depending
on them.  Some packages have already been updated, like the sudo
package, while others are still left to do.  I wish I had time to work
on this myself, but real live constrains make it unlikely that I will
find time to push this forward.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>What is missing in the Debian desktop, or why my parents use Kubuntu</title>
                <link>http://people.skolelinux.org/pere/blog/What_is_missing_in_the_Debian_desktop__or_why_my_parents_use_Kubuntu.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_is_missing_in_the_Debian_desktop__or_why_my_parents_use_Kubuntu.html</guid>
                <pubDate>Fri, 29 Jul 2011 08:10:00 +0200</pubDate>
                <description>&lt;p&gt;While at Debconf11, I have several times during discussions
mentioned the issues I believe should be improved in Debian for its
desktop to be useful for more people.  The use case for this is my
parents, which are currently running Kubuntu which solve the
issues.&lt;/p&gt;

&lt;p&gt;I suspect these four missing features are not very hard to
implement.  After all, they are present in Ubuntu, so if we wanted to
do this in Debian we would have a source.&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;&lt;strong&gt;Simple GUI based upgrade of packages.&lt;/strong&gt; When there
are new packages available for upgrades, a icon in the KDE status bar
indicate this, and clicking on it will activate the simple upgrade
tool to handle it.  I have no problem guiding both of my parents
through the process over the phone.  If a kernel reboot is required,
this too is indicated by the status bars and the upgrade tool.  Last
time I checked, nothing with the same features was working in KDE in
Debian.&lt;/li&gt;

&lt;li&gt;&lt;strong&gt;Simple handling of missing Firefox browser
plugins.&lt;/strong&gt; When the browser encounter a MIME type it do not
currently have a handler for, it will ask the user if the system
should search for a package that would add support for this MIME type,
and if the user say yes, the APT sources will be searched for packages
advertising the MIME type in their control file (visible in the
Packages file in the APT archive).  If one or more packages are found,
it is a simple click of the mouse to add support for the missing mime
type.  If the package require the user to accept some non-free
license, this is explained to the user.  The entire process make it
more clear to the user why something do not work in the browser, and
make the chances higher for the user to blame the web page authors and
not the browser for any missing features.&lt;/li&gt;

&lt;li&gt;&lt;strong&gt;Simple handling of missing multimedia codec/format
handlers.&lt;/strong&gt; When the media players encounter a format or codec
it is not supporting, a dialog pop up asking the user if the system
should search for a package that would add support for it.  This
happen with things like MP3, Windows Media or H.264.  The selection
and installation procedure is very similar to the Firefox browser
plugin handling.  This is as far as I know implemented using a
gstreamer hook.  The end result is that the user easily get access to
the codecs that are present from the APT archives available, while
explaining more on why a given format is unsupported by Ubuntu.&lt;/li&gt;

&lt;li&gt;&lt;strong&gt;Better browser handling of some MIME types.&lt;/strong&gt; When
displaying a text/plain file in my Debian browser, it will propose to
start emacs to show it.  If I remember correctly, when doing the same
in Kunbutu it show the file as a text file in the browser.  At least I
know Opera will show text files within the browser.  I much prefer the
latter behaviour.&lt;/li&gt;

&lt;/ol&gt; 

&lt;p&gt;There are other nice features as well, like the simplified suite
upgrader, but given that I am the one mostly doing the dist-upgrade,
it do not matter much.&lt;/p&gt;

&lt;p&gt;I really hope we could get these features in place for the next
Debian release.  It would require the coordinated effort of several
maintainers, but would make the end user experience a lot better.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Perl modules used by FixMyStreet which are missing in Debian/Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Perl_modules_used_by_FixMyStreet_which_are_missing_in_Debian_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Perl_modules_used_by_FixMyStreet_which_are_missing_in_Debian_Squeeze.html</guid>
                <pubDate>Tue, 26 Jul 2011 12:25:00 +0200</pubDate>
                <description>&lt;p&gt;The Norwegian &lt;a href=&quot;http://www.fiksgatami.no/&quot;&gt;FiksGataMi&lt;/A&gt;
site is build on Debian/Squeeze, and this platform was chosen because
I am most familiar with Debian (being a Debian Developer for around 10
years) because it is the latest stable Debian release which should get
security support for a few years.&lt;/p&gt;

&lt;p&gt;The web service is written in Perl, and depend on some perl modules
that are missing in Debian at the moment.  It would be great if these
modules were added to the Debian archive, allowing anyone to set up
their own &lt;a href=&quot;http://www.fixmystreet.com&quot;&gt;FixMyStreet&lt;/a&gt; clone
in their own country using only Debian packages.  The list of modules
missing in Debian/Squeeze isn&#39;t very long, and I hope the perl group
will find time to package the 12 modules Catalyst::Plugin::SmartURI,
Catalyst::Plugin::Unicode::Encoding, Catalyst::View::TT, Devel::Hide,
Sort::Key, Statistics::Distributions, Template::Plugin::Comma,
Template::Plugin::DateTime::Format, Term::Size::Any, Term::Size::Perl,
URI::SmartURI and Web::Scraper to make the maintenance of FixMyStreet
easier in the future.&lt;/p&gt;

&lt;p&gt;Thanks to the great tools in Debian, getting the missing modules
installed on my server was a simple call to &#39;cpan2deb Module::Name&#39;
and &#39;dpkg -i&#39; to install the resulting package.  But this leave me
with the responsibility of tracking security problems, which I really
do not have time for.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Free Software vs. proprietary softare...</title>
                <link>http://people.skolelinux.org/pere/blog/Free_Software_vs__proprietary_softare___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Free_Software_vs__proprietary_softare___.html</guid>
                <pubDate>Mon, 20 Jun 2011 12:50:00 +0200</pubDate>
                <description>&lt;p&gt;Reading
&lt;a href=&quot;http://blog.thingiverse.com/2011/06/20/open-source-vs-closed-source-eulas/&quot;&gt;the
thingiverse blog&lt;/a&gt;, I came across two highlights of interesting
parts of the
&lt;a href=&quot;http://wiki.blender.org/index.php/Autodesk_EULA&quot;&gt;Autodesk&lt;/a&gt;
and
&lt;a href=&quot;http://blog.makezine.com/archive/2011/06/things-you-cant-do-with-the-microsoft-kinect-sdk.html&quot;&gt;Microsoft
Kinect&lt;/a&gt; End User License Agreements (EULAs), which illustrates
quite well why I stay away from software with EULAs.  Whenever I take
the time to read their content, the terms are simply unacceptable.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Experimental Open311 API for the mySociety fixmystreet system</title>
                <link>http://people.skolelinux.org/pere/blog/Experimental_Open311_API_for_the_mySociety_fixmystreet_system.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Experimental_Open311_API_for_the_mySociety_fixmystreet_system.html</guid>
                <pubDate>Sat, 30 Apr 2011 17:20:00 +0200</pubDate>
                <description>&lt;p&gt;Today, the first draft implementation of an
&lt;a href=&quot;http://www.open311.org/&quot;&gt;Open311 API&lt;/a&gt; for the Norwegian
service &lt;a href=&quot;http://www.fiksgatami.no/&quot;&gt;FiksGataMi&lt;/a&gt; started to
work.  It is only available on the developer server for now, and I
have not tested it using any existing Open311 client (I lack the
platforms needed to run the clients I have found so far), but it is
able to query the database and extract a list of open and closed
requests within a given category and reported to a given municipality.
I believe that is a good start to create a useful service for those
that want to do data mining on the requests submitted so far.&lt;/p&gt;

&lt;p&gt;Where is it?  Visit
&lt;a href=&quot;http://fiksgatami-dev.nuug.no/open311.cgi/v2/&quot;&gt;http://fiksgatami-dev.nuug.no/open311.cgi/v2/&lt;/a&gt;
to have a look.  Please send feedback to the
&lt;a href=&quot;http://lists.nuug.no/mailman/listinfo/fiksgatami&quot;&gt;fiksgatami
(at) nuug.no&lt;/a&gt; mailing list.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Initial notes on adding Open311 server API on FixMyStreet</title>
                <link>http://people.skolelinux.org/pere/blog/Initial_notes_on_adding_Open311_server_API_on_FixMyStreet.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Initial_notes_on_adding_Open311_server_API_on_FixMyStreet.html</guid>
                <pubDate>Fri, 29 Apr 2011 10:00:00 +0200</pubDate>
                <description>&lt;p&gt;The last few days I have spent some time trying to add support for
the &lt;a href=&quot;http://www.open311.org/&quot;&gt;Open311 API&lt;/a&gt; in the
&lt;a href=&quot;http://www.fiksgatami.no/&quot;&gt;Norwegian FixMyStreet service&lt;/a&gt;.
Earlier I believed Open311 would be a useful API to use to submit
reports to the municipalities, but when I noticed that the
&lt;a href=&quot;http://fixmystreet.org.nz/&quot;&gt;New Zealand version&lt;/a&gt; of
FixMyStreet had implemented Open311 on the server side, it occurred to
me that this was a nice way to allow the public, press and
municipalities to do data mining directly in the FixMyStreet service.
Thus I went to work implementing the Open311 specification for
FixMyStreet.  The implementation is not yet ready, but I am starting
to get a draft limping along.  In the process, I have discovered a few
issues with the Open311 specification.&lt;/p&gt;

&lt;p&gt;One obvious missing feature is the lack of natural language
handling in the specification.  The specification seem to assume all
reports will be written in English, and do not provide a way for the
receiving end to specify which languages are understood there.  To be
able to use the same client and submit to several Open311 receivers,
it would be useful to know which language to use when writing reports.
I believe the specification should be extended to allow the receivers
of problem reports to specify which language they accept, and the
submitter to specify which language the report is written in.
Language of a text can also be automatically guessed using statistical
methods, but for multi-lingual persons like myself, it is useful to
know which language to use when writing a problem report.  I suspect
some lang=nb,nn kind of attribute would solve it.&lt;/p&gt;

&lt;p&gt;A key part of the Open311 API is the list of services provided,
which is similar to the categories used by FixMyStreet.  One issue I
run into is the need to specify both name and unique identifier for
each category.  The specification do not state that the identifier
should be numeric, but all example implementations have used numbers
here.  In FixMyStreet, there is no number associated with each
category.  As the specification do not forbid it, I will use the name
as the unique identifier for now and see how open311 clients handle
it.&lt;/p&gt;

&lt;p&gt;The report format in open311 and the report format in FixMyStreet
differ in a key part.  FixMyStreet have a title and a description,
while Open311 only have a description and lack the title.  I&#39;m not
quite sure how to best handle this yet.  When asking for a FixMyStreet
report in Open311 format, I just merge title an description into the
open311 description, but this is not going to work if the open311 API
should be used for submitting new reports to FixMyStreet.&lt;/p&gt;

&lt;p&gt;The search feature in Open311 is missing a way to ask for problems
near a geographic location.  I believe this is important if one is to
use Open311 as the query language for mobile units.  The specification
should be extended to handle this, probably using some new lat=, lon=
and range= options.&lt;/p&gt;

&lt;p&gt;The final challenge I see is that the FixMyStreet code handle
several administrations in one interface, while the Open311 API seem
to assume only one administration.  For FixMyStreet, this mean a
report can be sent to several administrations, and the categories
available depend on the location of the problem.  Not quite sure how
to best handle this.  I&#39;ve noticed
&lt;a href=&quot;http://seeclickfix.com/open311/&quot;&gt;SeeClickFix&lt;/a&gt; added
latitude and longitude options to the services request, but it do not
solve the problem of what to return when no location is specified.
Will have to investigate this a bit more.&lt;/p&gt;

&lt;p&gt;My distaste for web forums have kept me from bringing these issues
up with the open311 developer group.  I really wish they had a email
list available via &lt;a href=&quot;http://www.gmane.org/&quot;&gt;Gmane&lt;/a&gt; to use for
discussions instead of only
&lt;a href=&quot;http://lists.open311.org/groups/discuss&quot;&gt;a forum&lt;a/&gt;.  Oh,
well.  That will probably resolve itself, one way or another.  I&#39;ve
also tried visiting the IRC channel #open311 on FreeNode, but no-one
seem to reply to my questions there.  This make me wonder if I just
fail to understand how the open311 community work.  It sure do not
work like the free software project communities I am used to.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Gnash enteres Google Summer of Code 2011</title>
                <link>http://people.skolelinux.org/pere/blog/Gnash_enteres_Google_Summer_of_Code_2011.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Gnash_enteres_Google_Summer_of_Code_2011.html</guid>
                <pubDate>Wed, 6 Apr 2011 09:00:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.getgnash.org/&quot;&gt;The Gnash project&lt;/a&gt; is still
the most promising solution for a Free Software Flash implementation.
A few days ago the project
&lt;a href=&quot;http://lists.gnu.org/archive/html/gnash-dev/2011-04/msg00011.html&quot;&gt;announced&lt;/a&gt;
that it will participate in Google Summer of Code.  I hope many
students apply, and that some of them succeed in getting AVM2 support
into Gnash.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A Norwegian FixMyStreet have kept me busy the last few weeks</title>
                <link>http://people.skolelinux.org/pere/blog/A_Norwegian_FixMyStreet_have_kept_me_busy_the_last_few_weeks.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_Norwegian_FixMyStreet_have_kept_me_busy_the_last_few_weeks.html</guid>
                <pubDate>Sun, 3 Apr 2011 22:50:00 +0200</pubDate>
                <description>&lt;p&gt;Here is a small update for my English readers.  Most of my blog
posts have been in Norwegian the last few weeks, so here is a short
update in English.&lt;/p&gt;

&lt;p&gt;The kids still keep me too busy to get much free software work
done, but I did manage to organise a project to get a Norwegian port
of the British service
&lt;a href=&quot;http://www.fixmystreet.com/&quot;&gt;FixMyStreet&lt;/a&gt; up and running,
and it has been running for a month now.  The entire project has been
organised by me and two others.  Around Christmas we gathered sponsors
to fund the development work.  In January I drafted a contract with
&lt;a href=&quot;http://www.mysociety.org/&quot;&gt;mySociety&lt;/a&gt; on what to develop,
and in February the development took place.  Most of it involved
converting the source to use GPS coordinates instead of British
easting/northing, and the resulting code should be a lot easier to get
running in any country by now.  The Norwegian
&lt;a href=&quot;http://www.fiksgatami.no/&quot;&gt;FiksGataMi&lt;/a&gt; is using
&lt;a href=&quot;http://www.openstreetmap.org/&quot;&gt;OpenStreetmap&lt;/a&gt; as the map
source and the source for administrative borders in Norway, and
support for this had to be added/fixed.&lt;/p&gt;

&lt;p&gt;The Norwegian version went live March 3th, and we spent the weekend
polishing the system before we announced it March 7th.  The system is
running on a KVM instance of Debian/Squeeze, and has seen almost 3000
problem reports in a few weeks.  Soon we hope to announce the Android
and iPhone versions making it even easier to report problems with the
public infrastructure.&lt;/p&gt;

&lt;p&gt;Perhaps something to consider for those of you in countries without
such service?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Using NVD and CPE to track CVEs in locally maintained software</title>
                <link>http://people.skolelinux.org/pere/blog/Using_NVD_and_CPE_to_track_CVEs_in_locally_maintained_software.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_NVD_and_CPE_to_track_CVEs_in_locally_maintained_software.html</guid>
                <pubDate>Fri, 28 Jan 2011 15:40:00 +0100</pubDate>
                <description>&lt;p&gt;The last few days I have looked at ways to track open security
issues here at my work with the University of Oslo.  My idea is that
it should be possible to use the information about security issues
available on the Internet, and check our locally
maintained/distributed software against this information.  It should
allow us to verify that no known security issues are forgotten.  The
CVE database listing vulnerabilities seem like a great central point,
and by using the package lists from Debian mapped to CVEs provided by
the testing security team, I believed it should be possible to figure
out which security holes were present in our free software
collection.&lt;/p&gt;

&lt;p&gt;After reading up on the topic, it became obvious that the first
building block is to be able to name software packages in a unique and
consistent way across data sources.  I considered several ways to do
this, for example coming up with my own naming scheme like using URLs
to project home pages or URLs to the Freshmeat entries, or using some
existing naming scheme.  And it seem like I am not the first one to
come across this problem, as MITRE already proposed and implemented a
solution.  Enter the &lt;a href=&quot;http://cpe.mitre.org/index.html&quot;&gt;Common
Platform Enumeration&lt;/a&gt; dictionary, a vocabulary for referring to
software, hardware and other platform components.  The CPE ids are
mapped to CVEs in the &lt;a href=&quot;http://web.nvd.nist.gov/&quot;&gt;National
Vulnerability Database&lt;/a&gt;, allowing me to look up know security
issues for any CPE name.  With this in place, all I need to do is to
locate the CPE id for the software packages we use at the university.
This is fairly trivial (I google for &#39;cve cpe $package&#39; and check the
NVD entry if a CVE for the package exist).&lt;/p&gt;

&lt;p&gt;To give you an example.  The GNU gzip source package have the CPE
name cpe:/a:gnu:gzip.  If the old version 1.3.3 was the package to
check out, one could look up
&lt;a href=&quot;http://web.nvd.nist.gov/view/vuln/search?cpe=cpe%3A%2Fa%3Agnu%3Agzip:1.3.3&quot;&gt;cpe:/a:gnu:gzip:1.3.3
in NVD&lt;/a&gt; and get a list of 6 security holes with public CVE entries.
The most recent one is
&lt;a href=&quot;http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-0001&quot;&gt;CVE-2010-0001&lt;/a&gt;,
and at the bottom of the NVD page for this vulnerability the complete
list of affected versions is provided.&lt;/p&gt;

&lt;p&gt;The NVD database of CVEs is also available as a XML dump, allowing
for offline processing of issues.  Using this dump, I&#39;ve written a
small script taking a list of CPEs as input and list all CVEs
affecting the packages represented by these CPEs.  One give it CPEs
with version numbers as specified above and get a list of open
security issues out.&lt;/p&gt;

&lt;p&gt;Of course for this approach to be useful, the quality of the NVD
information need to be high.  For that to happen, I believe as many as
possible need to use and contribute to the NVD database.  I notice
RHEL is providing
&lt;a href=&quot;https://www.redhat.com/security/data/metrics/rhsamapcpe.txt&quot;&gt;a
map from CVE to CPE&lt;/a&gt;, indicating that they are using the CPE
information.  I&#39;m not aware of Debian and Ubuntu doing the same.&lt;/p&gt;

&lt;p&gt;To get an idea about the quality for free software, I spent some
time making it possible to compare the CVE database from Debian with
the CVE database in NVD.  The result look fairly good, but there are
some inconsistencies in NVD (same software package having several
CPEs), and some inaccuracies (NVD not mentioning buggy packages that
Debian believe are affected by a CVE).  Hope to find time to improve
the quality of NVD, but that require being able to get in touch with
someone maintaining it.  So far my three emails with questions and
corrections have not seen any reply, but I hope contact can be
established soon.&lt;/p&gt;

&lt;p&gt;An interesting application for CPEs is cross platform package
mapping.  It would be useful to know which packages in for example
RHEL, OpenSuSe and Mandriva are missing from Debian and Ubuntu, and
this would be trivial if all linux distributions provided CPE entries
for their packages.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Which module is loaded for a given PCI and USB device?</title>
                <link>http://people.skolelinux.org/pere/blog/Which_module_is_loaded_for_a_given_PCI_and_USB_device_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Which_module_is_loaded_for_a_given_PCI_and_USB_device_.html</guid>
                <pubDate>Sun, 23 Jan 2011 00:20:00 +0100</pubDate>
                <description>&lt;p&gt;In the
&lt;a href=&quot;http://packages.qa.debian.org/discover-data&quot;&gt;discover-data&lt;/a&gt;
package in Debian, there is a script to report useful information
about the running hardware for use when people report missing
information.  One part of this script that I find very useful when
debugging hardware problems, is the part mapping loaded kernel module
to the PCI device it claims.  It allow me to quickly see if the kernel
module I expect is driving the hardware I am struggling with.  To see
the output, make sure discover-data is installed and run
&lt;tt&gt;/usr/share/bug/discover-data 3&gt;&amp;1&lt;/tt&gt;.  The relevant output on
one of my machines like this:&lt;/p&gt;

&lt;pre&gt;
loaded modules:
10de:03eb i2c_nforce2
10de:03f1 ohci_hcd
10de:03f2 ehci_hcd
10de:03f0 snd_hda_intel
10de:03ec pata_amd
10de:03f6 sata_nv
1022:1103 k8temp
109e:036e bttv
109e:0878 snd_bt87x
11ab:4364 sky2
&lt;/pre&gt;

&lt;p&gt;The code in question look like this, slightly modified for
readability and to drop the output to file descriptor 3:&lt;/p&gt;

&lt;pre&gt;
if [ -d /sys/bus/pci/devices/ ] ; then
    echo loaded pci modules:
    (
        cd /sys/bus/pci/devices/
        for address in * ; do
            if [ -d &quot;$address/driver/module&quot; ] ; then
                module=`cd $address/driver/module ; pwd -P | xargs basename`
                if grep -q &quot;^$module &quot; /proc/modules ; then
                    address=$(echo $address |sed s/0000://)
                    id=`lspci -n -s $address | tail -n 1 | awk &#39;{print $3}&#39;`
                    echo &quot;$id $module&quot;
                fi
            fi
        done
    )
    echo
fi
&lt;/pre&gt;

&lt;p&gt;Similar code could be used to extract USB device module
mappings:&lt;/p&gt;

&lt;pre&gt;
if [ -d /sys/bus/usb/devices/ ] ; then
    echo loaded usb modules:
    (
        cd /sys/bus/usb/devices/
        for address in * ; do
            if [ -d &quot;$address/driver/module&quot; ] ; then
                module=`cd $address/driver/module ; pwd -P | xargs basename`
                if grep -q &quot;^$module &quot; /proc/modules ; then
                    address=$(echo $address |sed s/0000://)
                    id=$(lsusb -s $address | tail -n 1 | awk &#39;{print $6}&#39;)
                    if [ &quot;$id&quot; ] ; then
                        echo &quot;$id $module&quot;
                    fi
                fi
            fi
        done
    )
    echo
fi
&lt;/pre&gt;

&lt;p&gt;This might perhaps be something to include in other tools as
well.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The video format most supported in web browsers?</title>
                <link>http://people.skolelinux.org/pere/blog/The_video_format_most_supported_in_web_browsers_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_video_format_most_supported_in_web_browsers_.html</guid>
                <pubDate>Sun, 16 Jan 2011 00:20:00 +0100</pubDate>
                <description>&lt;p&gt;The video format struggle on the web continues, and the three
contenders seem to be Ogg Theora, H.264 and WebM.  Most video sites
seem to use H.264, while others use Ogg Theora.  Interestingly enough,
the comments I see give me the feeling that a lot of people believe
H.264 is the most supported video format in browsers, but according to
the Wikipedia article on
&lt;a href=&quot;http://en.wikipedia.org/wiki/HTML5_video&quot;&gt;HTML5 video&lt;/a&gt;,
this is not true.  Check out the nice table of supprted formats in
different browsers there.  The format supported by most browsers is
Ogg Theora, supported by released versions of Mozilla Firefox, Google
Chrome, Chromium, Opera, Konqueror, Epiphany, Origyn Web Browser and
BOLT browser, while not supported by Internet Explorer nor Safari.
The runner up is WebM supported by released versions of Google Chrome
Chromium Opera and Origyn Web Browser, and test versions of Mozilla
Firefox.  H.264 is supported by released versions of Safari, Origyn
Web Browser and BOLT browser, and the test version of Internet
Explorer.  Those wanting Ogg Theora support in Internet Explorer and
Safari can install plugins to get it.&lt;/p&gt;

&lt;p&gt;To me, the simple conclusion from this is that to reach most users
without any extra software installed, one uses Ogg Theora with the
HTML5 video tag.   Of course to reach all those without a browser
handling HTML5, one need fallback mechanisms.  In
&lt;a href=&quot;http://www.nuug.no/&quot;&gt;NUUG&lt;/a&gt;, we provide first fallback to a
plugin capable of playing MPEG1 video, and those without such support
we have a second fallback to the Cortado java applet playing Ogg
Theora.  This seem to work quite well, as can be seen in an &lt;a
href=&quot;http://www.nuug.no/aktiviteter/20110111-semantic-web/&quot;&gt;example
from last week&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The reason Ogg Theora is the most supported format, and H.264 is
the least supported is simple.  Implementing and using H.264
require royalty payment to MPEG-LA, and the terms of use from MPEG-LA
are incompatible with free software licensing.  If you believed H.264
was without royalties and license terms, check out
&quot;&lt;a href=&quot;http://webmink.com/essays/h-264/&quot;&gt;H.264 – Not The Kind Of
Free That Matters&lt;/a&gt;&quot; by Simon Phipps.&lt;/p&gt;

&lt;p&gt;A incomplete list of sites providing video in Ogg Theora is
available from
&lt;a href=&quot;http://wiki.xiph.org/index.php/List_of_Theora_videos&quot;&gt;the
Xiph.org wiki&lt;/a&gt;, if you want to have a look.  I&#39;m not aware of a
similar list for WebM nor H.264.&lt;/p&gt;

&lt;p&gt;Update 2011-01-16 09:40: A question from Tollef on IRC made me
realise that I failed to make it clear enough this text is about the
&amp;lt;video&amp;gt; tag support in browsers and not the video support
provided by external plugins like the Flash plugins.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Chrome plan to drop H.264 support for HTML5 &amp;lt;video&amp;gt;</title>
                <link>http://people.skolelinux.org/pere/blog/Chrome_plan_to_drop_H_264_support_for_HTML5__lt_video_gt_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Chrome_plan_to_drop_H_264_support_for_HTML5__lt_video_gt_.html</guid>
                <pubDate>Wed, 12 Jan 2011 22:10:00 +0100</pubDate>
                <description>&lt;p&gt;Today I discovered
&lt;a href=&quot;http://www.digi.no/860070/google-dropper-h264-stotten-i-chrome&quot;&gt;via
digi.no&lt;/a&gt; that the Chrome developers, in a surprising announcement,
&lt;a href=&quot;http://blog.chromium.org/2011/01/html-video-codec-support-in-chrome.html&quot;&gt;yesterday
announced&lt;/a&gt; plans to drop H.264 support for HTML5 &amp;lt;video&amp;gt; in
the browser.  The argument used is that H.264 is not a &quot;completely
open&quot; codec technology.  If you believe H.264 was free for everyone
to use, I recommend having a look at the essay
&quot;&lt;a href=&quot;http://webmink.com/essays/h-264/&quot;&gt;H.264 – Not The Kind Of
Free That Matters&lt;/a&gt;&quot;.  It is not free of cost for creators of video
tools, nor those of us that want to publish on the Internet, and the
terms provided by MPEG-LA excludes free software projects from
licensing the patents needed for H.264.  Some background information
on the Google announcement is available from
&lt;a href=&quot;http://www.osnews.com/story/24243/Google_To_Drop_H264_Support_from_Chrome&quot;&gt;OSnews&lt;/a&gt;.
A good read. :)&lt;/p&gt;

&lt;p&gt;Personally, I believe it is great that Google is taking a stand to
promote equal terms for everyone when it comes to video publishing on
the Internet.  This can only be done by publishing using free and open
standards, which is only possible if the web browsers provide support
for these free and open standards.  At the moment there seem to be two
camps in the web browser world when it come to video support.  Some
browsers support H.264, and others support
&lt;a href=&quot;http://www.theora.org/&quot;&gt;Ogg Theora&lt;/a&gt; and
&lt;a href=&quot;http://www.webmproject.org/&quot;&gt;WebM&lt;/a&gt;
(&lt;a href=&quot;http://www.diracvideo.org/&quot;&gt;Dirac&lt;/a&gt; is not really an option
yet), forcing those of us that want to publish video on the Internet
and which can not accept the terms of use presented by MPEG-LA for
H.264 to not reach all potential viewers.
Wikipedia keep &lt;a href=&quot;http://en.wikipedia.org/wiki/HTML5_video&quot;&gt;an
updated summary&lt;/a&gt; of the current browser support.&lt;/p&gt;

&lt;p&gt;Not surprising, several people would prefer Google to keep
promoting H.264, and John Gruber
&lt;a href=&quot;http://daringfireball.net/2011/01/simple_questions&quot;&gt;presents
the mind set&lt;/a&gt; of these people quite well.  His rhetorical questions
provoked a reply from Thom Holwerda with another set of questions
&lt;a href=&quot;http://www.osnews.com/story/24245/10_Questions_for_John_Gruber_Regarding_H_264_WebM&quot;&gt;presenting
the issues with H.264&lt;/a&gt;. Both are worth a read.&lt;/p&gt;

&lt;p&gt;Some argue that if Google is dropping H.264 because it isn&#39;t free,
they should also drop support for the Adobe Flash plugin.  This
argument was covered by Simon Phipps in
&lt;a href=&quot;http://blogs.computerworlduk.com/simon-says/2011/01/google-and-h264---far-from-hypocritical/index.htm&quot;&gt;todays
blog post&lt;/a&gt;, which I find to put the issue in context.  To me it
make perfect sense to drop native H.264 support for HTML5 in the
browser while still allowing plugins.&lt;/p&gt;

&lt;p&gt;I suspect the reason this announcement make so many people protest,
is that all the users and promoters of H.264 suddenly get an uneasy
feeling that they might be backing the wrong horse.  A lot of TV
broadcasters have been moving to H.264 the last few years, and a lot
of money has been invested in hardware based on the belief that they
could use the same video format for both broadcasting and web
publishing.  Suddenly this belief is shaken.&lt;/p&gt;

&lt;p&gt;An interesting question is why Google is doing this.  While the
presented argument might be true enough, I believe Google would only
present the argument if the change make sense from a business
perspective.  One reason might be that they are currently negotiating
with MPEG-LA over royalties or usage terms, and giving MPEG-LA the
feeling that dropping H.264 completely from Chroome, Youtube and
Google Video would improve the negotiation position of Google.
Another reason might be that Google want to save money by not having
to pay the video tax to MPEG-LA at all, and thus want to move to a
video format not requiring royalties at all.  A third reason might be
that the Chrome development team simply want to avoid the
Chrome/Chromium split to get more help with the development of Chrome.
I guess time will tell.&lt;/p&gt;

&lt;p&gt;Update 2011-01-15: The Google Chrome team provided
&lt;a href=&quot;http://blog.chromium.org/2011/01/more-about-chrome-html-video-codec.html&quot;&gt;more
background and information on the move&lt;/a&gt; it a blog post yesterday.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>What standards are Free and Open as defined by Digistan?</title>
                <link>http://people.skolelinux.org/pere/blog/What_standards_are_Free_and_Open_as_defined_by_Digistan_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_standards_are_Free_and_Open_as_defined_by_Digistan_.html</guid>
                <pubDate>Thu, 30 Dec 2010 23:15:00 +0100</pubDate>
                <description>&lt;p&gt;After trying to
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Is_Ogg_Theora_a_free_and_open_standard_.html&quot;&gt;compare
Ogg Theora&lt;/a&gt; to
&lt;a href=&quot;http://www.digistan.org/open-standard:definition&quot;&gt;the Digistan
definition&lt;/a&gt; of a free and open standard, I concluded that this need
to be done for more standards and started on a framework for doing
this.  As a start, I want to get the status for all the standards in
the Norwegian reference directory, which include UTF-8, HTML, PDF, ODF,
JPEG, PNG, SVG and others.  But to be able to complete this in a
reasonable time frame, I will need help.&lt;/p&gt;

&lt;p&gt;If you want to help out with this work, please visit
&lt;a href=&quot;http://wiki.nuug.no/grupper/standard/digistan-analyse&quot;&gt;the
wiki pages I have set up for this&lt;/a&gt;, and let me know that you want
to help out.  The IRC channel #nuug on irc.freenode.net is a good
place to coordinate this for now, as it is the IRC channel for the
NUUG association where I have created the framework (I am the leader
of the Norwegian Unix User Group).&lt;/p&gt;

&lt;p&gt;The framework is still forming, and a lot is left to do.  Do not be
scared by the sketchy form of the current pages. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The many definitions of a open standard</title>
                <link>http://people.skolelinux.org/pere/blog/The_many_definitions_of_a_open_standard.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_many_definitions_of_a_open_standard.html</guid>
                <pubDate>Mon, 27 Dec 2010 14:45:00 +0100</pubDate>
                <description>&lt;p&gt;One of the reasons I like the Digistan definition of
&quot;&lt;a href=&quot;http://www.digistan.org/open-standard:definition&quot;&gt;Free and
Open Standard&lt;/a&gt;&quot; is that this is a new term, and thus the meaning of
the term has been decided by Digistan.  The term &quot;Open Standard&quot; has
become so misunderstood that it is no longer very useful when talking
about standards.  One end up discussing which definition is the best
one and with such frame the only one gaining are the proponents of
de-facto standards and proprietary solutions.&lt;/p&gt;

&lt;p&gt;But to give us an idea about the diversity of definitions of open
standards, here are a few that I know about.  This list is not
complete, but can be a starting point for those that want to do a
complete survey.  More definitions are available on the
&lt;a href=&quot;http://en.wikipedia.org/wiki/Open_standard&quot;&gt;wikipedia
page&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;First off is my favourite, the definition from the European
Interoperability Framework version 1.0.  Really sad to notice that BSA
and others has succeeded in getting it removed from version 2.0 of the
framework by stacking the committee drafting the new version with
their own people.  Anyway, the definition is still available and it
include the key properties needed to make sure everyone can use a
specification on equal terms.&lt;/p&gt;

&lt;blockquote&gt;

&lt;p&gt;The following are the minimal characteristics that a specification
and its attendant documents must have in order to be considered an
open standard:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;The standard is adopted and will be maintained by a not-for-profit
organisation, and its ongoing development occurs on the basis of an
open decision-making procedure available to all interested parties
(consensus or majority decision etc.).&lt;/li&gt;

&lt;li&gt;The standard has been published and the standard specification
document is available either freely or at a nominal charge. It must be
permissible to all to copy, distribute and use it for no fee or at a
nominal fee.&lt;/li&gt;

&lt;li&gt;The intellectual property - i.e. patents possibly present - of
(parts of) the standard is made irrevocably available on a royalty-
free basis.&lt;/li&gt;

&lt;li&gt;There are no constraints on the re-use of the standard.&lt;/li&gt;

&lt;/ul&gt;
&lt;/blockquote&gt;

&lt;p&gt;Another one originates from my friends over at
&lt;a href=&quot;http://www.dkuug.dk/&quot;&gt;DKUUG&lt;/a&gt;, who coined and gathered
support for &lt;a href=&quot;http://www.aaben-standard.dk/&quot;&gt;this
definition&lt;/a&gt; in 2004.  It even made it into the Danish parlament as
&lt;a href=&quot;http://www.ft.dk/dokumenter/tingdok.aspx?/samling/20051/beslutningsforslag/B103/som_fremsat.htm&quot;&gt;their
definition of a open standard&lt;/a&gt;.  Another from a different part of
the Danish government is available from the wikipedia page.&lt;/p&gt;

&lt;blockquote&gt;

&lt;p&gt;En åben standard opfylder følgende krav:&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;Veldokumenteret med den fuldstændige specifikation offentligt
tilgængelig.&lt;/li&gt;

&lt;li&gt;Frit implementerbar uden økonomiske, politiske eller juridiske
begrænsninger på implementation og anvendelse.&lt;/li&gt;

&lt;li&gt;Standardiseret og vedligeholdt i et åbent forum (en såkaldt
&quot;standardiseringsorganisation&quot;) via en åben proces.&lt;/li&gt;

&lt;/ol&gt;

&lt;/blockquote&gt;

&lt;p&gt;Then there is &lt;a href=&quot;http://www.fsfe.org/projects/os/def.html&quot;&gt;the
definition&lt;/a&gt; from Free Software Foundation Europe.&lt;/p&gt;

&lt;blockquote&gt;

&lt;p&gt;An Open Standard refers to a format or protocol that is&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;subject to full public assessment and use without constraints in a
manner equally available to all parties;&lt;/li&gt;

&lt;li&gt;without any components or extensions that have dependencies on
formats or protocols that do not meet the definition of an Open
Standard themselves;&lt;/li&gt;

&lt;li&gt;free from legal or technical clauses that limit its utilisation by
any party or in any business model;&lt;/li&gt;

&lt;li&gt;managed and further developed independently of any single vendor
in a process open to the equal participation of competitors and third
parties;&lt;/li&gt;

&lt;li&gt;available in multiple complete implementations by competing
vendors, or as a complete implementation equally available to all
parties.&lt;/li&gt;

&lt;/ol&gt;

&lt;/blockquote&gt;

&lt;p&gt;A long time ago, SUN Microsystems, now bought by Oracle, created
its
&lt;a href=&quot;http://blogs.sun.com/dennisding/resource/Open%20Standard%20Definition.pdf&quot;&gt;Open
Standards Checklist&lt;/a&gt; with a fairly detailed description.&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;Creation and Management of an Open Standard

&lt;ul&gt;

&lt;li&gt;Its development and management process must be collaborative and
  democratic:

         &lt;ul&gt;

         &lt;li&gt;Participation must be accessible to all those who wish to
            participate and can meet fair and reasonable criteria
            imposed by the organization under which it is developed
            and managed.&lt;/li&gt;

         &lt;li&gt;The processes must be documented and, through a known
            method, can be changed through input from all
            participants.&lt;/li&gt;

         &lt;li&gt;The process must be based on formal and binding commitments for
            the disclosure and licensing of intellectual property rights.&lt;/li&gt;

         &lt;li&gt;Development and management should strive for consensus,
            and an appeals process must be clearly outlined.&lt;/li&gt;

         &lt;li&gt;The standard specification must be open to extensive
            public review at least once in its life-cycle, with
            comments duly discussed and acted upon, if required.&lt;/li&gt;

         &lt;/ul&gt;

&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;Use and Licensing of an Open Standard&lt;/p&gt;
&lt;ul&gt;

&lt;li&gt;The standard must describe an interface, not an implementation,
  and the industry must be capable of creating multiple, competing
  implementations to the interface described in the standard without
  undue or restrictive constraints.  Interfaces include APIs,
  protocols, schemas, data formats and their encoding.&lt;/li&gt;

&lt;li&gt; The standard must not contain any proprietary &quot;hooks&quot; that create
  a technical or economic barriers&lt;/li&gt;

&lt;li&gt;Faithful implementations of the standard must
  interoperate. Interoperability means the ability of a computer
  program to communicate and exchange information with other computer
  programs and mutually to use the information which has been
  exchanged. This includes the ability to use, convert, or exchange
  file formats, protocols, schemas, interface information or
  conventions, so as to permit the computer program to work with other
  computer programs and users in all the ways in which they are
  intended to function.&lt;/li&gt;

&lt;li&gt;It must be permissible for anyone to copy, distribute and read the
  standard for a nominal fee, or even no fee. If there is a fee, it
  must be low enough to not preclude widespread use.&lt;/li&gt;

&lt;li&gt;It must be possible for anyone to obtain free (no royalties or
  fees; also known as &quot;royalty free&quot;), worldwide, non-exclusive and
  perpetual licenses to all essential patent claims to make, use and
  sell products based on the standard.  The only exceptions are
  terminations per the reciprocity and defensive suspension terms
  outlined below. Essential patent claims include pending, unpublished
  patents, published patents, and patent applications. The license is
  only for the exact scope of the standard in question.

      &lt;ul&gt;

      &lt;li&gt; May be conditioned only on reciprocal licenses to any of
        licensees&#39; patent claims essential to practice that standard
        (also known as a reciprocity clause)&lt;/li&gt;

      &lt;li&gt; May be terminated as to any licensee who sues the licensor
        or any other licensee for infringement of patent claims
        essential to practice that standard (also known as a
        &quot;defensive suspension&quot; clause)&lt;/li&gt;

      &lt;li&gt; The same licensing terms are available to every potential
        licensor&lt;/li&gt;

      &lt;/ul&gt;
&lt;/li&gt;

&lt;li&gt;The licensing terms of an open standards must not preclude
  implementations of that standard under open source licensing terms
  or restricted licensing terms&lt;/li&gt;

&lt;/ul&gt;

&lt;/blockquote&gt;

&lt;p&gt;It is said that one of the nice things about standards is that
there are so many of them.  As you can see, the same holds true for
open standard definitions.  Most of the definitions have a lot in
common, and it is not really controversial what properties a open
standard should have, but the diversity of definitions have made it
possible for those that want to avoid a level marked field and real
competition to downplay the significance of open standards.  I hope we
can turn this tide by focusing on the advantages of Free and Open
Standards.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Is Ogg Theora a free and open standard?</title>
                <link>http://people.skolelinux.org/pere/blog/Is_Ogg_Theora_a_free_and_open_standard_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Is_Ogg_Theora_a_free_and_open_standard_.html</guid>
                <pubDate>Sat, 25 Dec 2010 20:25:00 +0100</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.digistan.org/open-standard:definition&quot;&gt;The
Digistan definition&lt;/a&gt; of a free and open standard reads like this:&lt;/p&gt;

&lt;blockquote&gt;

&lt;p&gt;The Digital Standards Organization defines free and open standard
as follows:&lt;/p&gt;

&lt;ol&gt;

&lt;li&gt;A free and open standard is immune to vendor capture at all stages
in its life-cycle. Immunity from vendor capture makes it possible to
freely use, improve upon, trust, and extend a standard over time.&lt;/li&gt;

&lt;li&gt;The standard is adopted and will be maintained by a not-for-profit
organisation, and its ongoing development occurs on the basis of an
open decision-making procedure available to all interested
parties.&lt;/li&gt;

&lt;li&gt;The standard has been published and the standard specification
document is available freely. It must be permissible to all to copy,
distribute, and use it freely.&lt;/li&gt;

&lt;li&gt;The patents possibly present on (parts of) the standard are made
irrevocably available on a royalty-free basis.&lt;/li&gt;

&lt;li&gt;There are no constraints on the re-use of the standard.&lt;/li&gt;

&lt;/ol&gt;

&lt;p&gt;The economic outcome of a free and open standard, which can be
measured, is that it enables perfect competition between suppliers of
products based on the standard.&lt;/p&gt;
&lt;/blockquote&gt;

&lt;p&gt;For a while now I have tried to figure out of Ogg Theora is a free
and open standard according to this definition.  Here is a short
writeup of what I have been able to gather so far.  I brought up the
topic on the Xiph advocacy mailing list
&lt;a href=&quot;http://lists.xiph.org/pipermail/advocacy/2009-July/001632.html&quot;&gt;in
July 2009&lt;/a&gt;, for those that want to see some background information.
According to Ivo Emanuel Gonçalves and Monty Montgomery on that list
the Ogg Theora specification fulfils the Digistan definition.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Free from vendor capture?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;As far as I can see, there is no single vendor that can control the
Ogg Theora specification.  It can be argued that the
&lt;a href=&quot;http://www.xiph.org/&quot;&gt;Xiph foundation&lt;/A&gt; is such vendor, but
given that it is a non-profit foundation with the expressed goal
making free and open protocols and standards available, it is not
obvious that this is a real risk.  One issue with the Xiph
foundation is that its inner working (as in board member list, or who
control the foundation) are not easily available on the web.  I&#39;ve
been unable to find out who is in the foundation board, and have not
seen any accounting information documenting how money is handled nor
where is is spent in the foundation.  It is thus not obvious for an
external observer who control The Xiph foundation, and for all I know
it is possible for a single vendor to take control over the
specification.  But it seem unlikely.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Maintained by open not-for-profit organisation?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;Assuming that the Xiph foundation is the organisation its web pages
claim it to be, this point is fulfilled.  If Xiph foundation is
controlled by a single vendor, it isn&#39;t, but I have not found any
documentation indicating this.&lt;/p&gt;

&lt;p&gt;According to
&lt;a href=&quot;http://media.hiof.no/diverse/fad/rapport_4.pdf&quot;&gt;a report&lt;/a&gt;
prepared by Audun Vaaler og Børre Ludvigsen for the Norwegian
government, the Xiph foundation is a non-commercial organisation and
the development process is open, transparent and non-Discrimatory.
Until proven otherwise, I believe it make most sense to believe the
report is correct.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Specification freely available?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The specification for the &lt;a href=&quot;http://www.xiph.org/ogg/doc/&quot;&gt;Ogg
container format&lt;/a&gt; and both the
&lt;a href=&quot;http://www.xiph.org/vorbis/doc/&quot;&gt;Vorbis&lt;/a&gt; and
&lt;a href=&quot;http://theora.org/doc/&quot;&gt;Theora&lt;/a&gt; codeces are available on
the web.  This are the terms in the Vorbis and Theora specification:

&lt;blockquote&gt;

Anyone may freely use and distribute the Ogg and [Vorbis/Theora]
specifications, whether in private, public, or corporate
capacity. However, the Xiph.Org Foundation and the Ogg project reserve
the right to set the Ogg [Vorbis/Theora] specification and certify
specification compliance.

&lt;/blockquote&gt;

&lt;p&gt;The Ogg container format is specified in IETF
&lt;a href=&quot;http://www.xiph.org/ogg/doc/rfc3533.txt&quot;&gt;RFC 3533&lt;/a&gt;, and
this is the term:&lt;p&gt;

&lt;blockquote&gt;

&lt;p&gt;This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published and
distributed, in whole or in part, without restriction of any kind,
provided that the above copyright notice and this paragraph are
included on all such copies and derivative works.  However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of developing
Internet standards in which case the procedures for copyrights defined
in the Internet Standards process must be followed, or as required to
translate it into languages other than English.&lt;/p&gt;

&lt;p&gt;The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.&lt;/p&gt;
&lt;/blockquote&gt;

&lt;p&gt;All these terms seem to allow unlimited distribution and use, an
this term seem to be fulfilled.  There might be a problem with the
missing permission to distribute modified versions of the text, and
thus reuse it in other specifications.  Not quite sure if that is a
requirement for the Digistan definition.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Royalty-free?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;There are no known patent claims requiring royalties for the Ogg
Theora format.
&lt;a href=&quot;http://www.streamingmedia.com/Articles/ReadArticle.aspx?ArticleID=65782&quot;&gt;MPEG-LA&lt;/a&gt;
and
&lt;a href=&quot;http://yro.slashdot.org/story/10/04/30/237238/Steve-Jobs-Hints-At-Theora-Lawsuit&quot;&gt;Steve
Jobs&lt;/a&gt; in Apple claim to know about some patent claims (submarine
patents) against the Theora format, but no-one else seem to believe
them.  Both Opera Software and the Mozilla Foundation have looked into
this and decided to implement Ogg Theora support in their browsers
without paying any royalties.  For now the claims from MPEG-LA and
Steve Jobs seem more like FUD to scare people to use the H.264 codec
than any real problem with Ogg Theora.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;No constraints on re-use?&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;I am not aware of any constraints on re-use.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Conclusion&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;3 of 5 requirements seem obviously fulfilled, and the remaining 2
depend on the governing structure of the Xiph foundation.  Given the
background report used by the Norwegian government, I believe it is
safe to assume the last two requirements are fulfilled too, but it
would be nice if the Xiph foundation web site made it easier to verify
this.&lt;/p&gt;

&lt;p&gt;It would be nice to see other analysis of other specifications to
see if they are free and open standards.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The reply from Edgar Villanueva to Microsoft in Peru</title>
                <link>http://people.skolelinux.org/pere/blog/The_reply_from_Edgar_Villanueva_to_Microsoft_in_Peru.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_reply_from_Edgar_Villanueva_to_Microsoft_in_Peru.html</guid>
                <pubDate>Sat, 25 Dec 2010 10:50:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago
&lt;a href=&quot;http://www.idg.no/computerworld/article189879.ece&quot;&gt;an
article&lt;/a&gt; in the Norwegian Computerworld magazine about how version
2.0 of
&lt;a href=&quot;http://en.wikipedia.org/wiki/European_Interoperability_Framework&quot;&gt;European
Interoperability Framework&lt;/a&gt; has been successfully lobbied by the
proprietary software industry to remove the focus on free software.
Nothing very surprising there, given
&lt;a href=&quot;http://news.slashdot.org/story/10/03/29/2115235/Open-Source-Open-Standards-Under-Attack-In-Europe&quot;&gt;earlier
reports&lt;/a&gt; on how Microsoft and others have stacked the committees in
this work.  But I find this very sad.   The definition of
&lt;a href=&quot;http://www.nuug.no/dokumenter/standard-presse-def-200506.txt&quot;&gt;an
open standard from version 1&lt;/a&gt; was very good, and something I
believe should be used also in the future, alongside
&lt;a href=&quot;http://www.digistan.org/open-standard:definition&quot;&gt;the
definition from Digistan&lt;/A&gt;.  Version 2 have removed the open
standard definition from its content.&lt;/p&gt;

&lt;p&gt;Anyway, the news reminded me of the great reply sent by Dr. Edgar
Villanueva, congressman in Peru at the time, to Microsoft as a reply
to Microsofts attack on his proposal regarding the use of free software
in the public sector in Peru.  As the text was not available from a
few of the URLs where it used to be available, I copy it here from
&lt;a href=&quot;http://gnuwin.epfl.ch/articles/en/reponseperou/villanueva_to_ms.html&quot;&gt;my
source&lt;/a&gt; to ensure it is available also in the future.  Some
background information about that story is available in
&lt;a href=&quot;http://www.linuxjournal.com/article/6099&quot;&gt;an article&lt;/a&gt; from
Linux Journal in 2002.&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;Lima, 8th of April, 2002&lt;br&gt; 
To: Señor JUAN ALBERTO GONZÁLEZ&lt;br&gt;
General Manager of Microsoft Perú&lt;/p&gt; 

&lt;p&gt;Dear Sir:&lt;/p&gt; 

&lt;p&gt;First of all, I thank you for your letter of March 25, 2002 in which you state the official position of Microsoft relative to Bill Number 1609, Free Software in Public Administration, which is indubitably inspired by the desire for Peru to find a suitable place in the global technological context. In the same spirit, and convinced that we will find the best solutions through an exchange of clear and open ideas, I will take this opportunity to reply to the commentaries included in your letter.&lt;/p&gt; 

&lt;p&gt;While acknowledging that opinions such as yours constitute a significant contribution, it would have been even more worthwhile for me if, rather than formulating objections of a general nature (which we will analyze in detail later) you had gathered solid arguments for the advantages that proprietary software could bring to the Peruvian State, and to its citizens in general, since this would have allowed a more enlightening exchange in respect of each of our positions.&lt;/p&gt; 

&lt;p&gt;With the aim of creating an orderly debate, we will assume that what you call &quot;open source software&quot; is what the Bill defines as &quot;free software&quot;, since there exists software for which the source code is distributed together with the program, but which does not fall within the definition established by the Bill; and that what you call &quot;commercial software&quot; is what the Bill defines as &quot;proprietary&quot; or &quot;unfree&quot;, given that there exists free software which is sold in the market for a price like any other good or service.&lt;/p&gt; 

&lt;p&gt;It is also necessary to make it clear that the aim of the Bill we are discussing is not directly related to the amount of direct savings that can by made by using free software in state institutions. That is in any case a marginal aggregate value, but in no way is it the chief focus of the Bill. The basic principles which inspire the Bill are linked to the basic guarantees of a state of law, such as:&lt;/p&gt; 

&lt;p&gt;
&lt;ul&gt;
&lt;li&gt;Free access to public information by the citizen. &lt;/li&gt;
&lt;li&gt;Permanence of public data. &lt;/li&gt;
&lt;li&gt;Security of the State and citizens.&lt;/li&gt; 
&lt;/ul&gt;
&lt;/p&gt;

&lt;p&gt;To guarantee the free access of citizens to public information, it is indispensable that the encoding of data is not tied to a single provider. The use of standard and open formats gives a guarantee of this free access, if necessary through the creation of compatible free software.&lt;/p&gt; 

&lt;p&gt;To guarantee the permanence of public data, it is necessary that the usability and maintenance of the software does not depend on the goodwill of the suppliers, or on the monopoly conditions imposed by them. For this reason the State needs systems the development of which can be guaranteed due to the availability of the source code.&lt;/p&gt; 

&lt;p&gt;To guarantee national security or the security of the State, it is indispensable to be able to rely on systems without elements which allow control from a distance or the undesired transmission of information to third parties. Systems with source code freely accessible to the public are required to allow their inspection by the State itself, by the citizens, and by a large number of independent experts throughout the world. Our proposal brings further security, since the knowledge of the source code will eliminate the growing number of programs with *spy code*. &lt;/p&gt;

&lt;p&gt;In the same way, our proposal strengthens the security of the citizens, both in their role as legitimate owners of information managed by the state, and in their role as consumers. In this second case, by allowing the growth of a widespread availability of free software not containing *spy code* able to put at risk privacy and individual freedoms.&lt;/p&gt;

&lt;p&gt;In this sense, the Bill is limited to establishing the conditions under which the state bodies will obtain software in the future, that is, in a way compatible with these basic principles.&lt;/p&gt; 


&lt;p&gt;From reading the Bill it will be clear that once passed:&lt;br&gt; 
&lt;li&gt;the law does not forbid the production of proprietary software&lt;/li&gt; 
&lt;li&gt;the law does not forbid the sale of proprietary software&lt;/li&gt; 
&lt;li&gt;the law does not specify which concrete software to use&lt;/li&gt; 
&lt;li&gt;the law does not dictate the supplier from whom software will be bought&lt;/li&gt; 
&lt;li&gt;the law does not limit the terms under which a software product can be licensed.&lt;/li&gt; 

&lt;/p&gt;

&lt;p&gt;What the Bill does express clearly, is that, for software to be acceptable for the state it is not enough that it is technically capable of fulfilling a task, but that further the contractual conditions must satisfy a series of requirements regarding the license, without which the State cannot guarantee the citizen adequate processing of his data, watching over its integrity, confidentiality, and accessibility throughout time, as these are very critical aspects for its normal functioning.&lt;/p&gt;

&lt;p&gt;We agree, Mr. Gonzalez, that information and communication technology have a significant impact on the quality of life of the citizens (whether it be positive or negative). We surely also agree that the basic values I have pointed out above are fundamental in a democratic state like Peru. So we are very interested to know of any other way of guaranteeing these principles, other than through the use of free software in the terms defined by the Bill.&lt;/p&gt; 

&lt;p&gt;As for the observations you have made, we will now go on to analyze them in detail:&lt;/p&gt; 

&lt;p&gt;Firstly, you point out that: &quot;1. The bill makes it compulsory for all public bodies to use only free software, that is to say open source software, which breaches the principles of equality before the law, that of non-discrimination and the right of free private enterprise, freedom of industry and of contract, protected by the constitution.&quot;&lt;/p&gt; 

&lt;p&gt;This understanding is in error. The Bill in no way affects the rights you list; it limits itself entirely to establishing conditions for the use of software on the part of state institutions, without in any way meddling in private sector transactions. It is a well established principle that the State does not enjoy the wide spectrum of contractual freedom of the private sector, as it is limited in its actions precisely by the requirement for transparency of public acts; and in this sense, the preservation of the greater common interest must prevail when legislating on the matter.&lt;/p&gt; 

&lt;p&gt;The Bill protects equality under the law, since no natural or legal person is excluded from the right of offering these goods to the State under the conditions defined in the Bill and without more limitations than those established by the Law of State Contracts and Purchasing (T.U.O. by Supreme Decree No. 012-2001-PCM).&lt;/p&gt; 

&lt;p&gt;The Bill does not introduce any discrimination whatever, since it only establishes *how* the goods have to be provided (which is a state power) and not *who* has to provide them (which would effectively be discriminatory, if restrictions based on national origin, race religion, ideology, sexual preference etc. were imposed). On the contrary, the Bill is decidedly antidiscriminatory. This is so because by defining with no room for doubt the conditions for the provision of software, it prevents state bodies from using software which has a license including discriminatory conditions.&lt;/p&gt; 

&lt;p&gt;It should be obvious from the preceding two paragraphs that the Bill does not harm free private enterprise, since the latter can always choose under what conditions it will produce software; some of these will be acceptable to the State, and others will not be since they contradict the guarantee of the basic principles listed above. This free initiative is of course compatible with the freedom of industry and freedom of contract (in the limited form in which the State can exercise the latter). Any private subject can produce software under the conditions which the State requires, or can refrain from doing so. Nobody is forced to adopt a model of production, but if they wish to provide software to the State, they must provide the mechanisms which guarantee the basic principles, and which are those described in the Bill.&lt;/p&gt; 

&lt;p&gt;By way of an example: nothing in the text of the Bill would prevent your company offering the State bodies an office &quot;suite&quot;, under the conditions defined in the Bill and setting the price that you consider satisfactory. If you did not, it would not be due to restrictions imposed by the law, but to business decisions relative to the method of commercializing your products, decisions with which the State is not involved.&lt;/p&gt; 

&lt;p&gt;To continue; you note that:&quot; 2. The bill, by making the use of open source software compulsory, would establish discriminatory and non competitive practices in the contracting and purchasing by public bodies...&quot;&lt;/p&gt; 

&lt;p&gt;This statement is just a reiteration of the previous one, and so the response can be found above. However, let us concern ourselves for a moment with your comment regarding &quot;non-competitive ... practices.&quot;&lt;/p&gt; 

&lt;p&gt;Of course, in defining any kind of purchase, the buyer sets conditions which relate to the proposed use of the good or service. From the start, this excludes certain manufacturers from the possibility of competing, but does not exclude them &quot;a priori&quot;, but rather based on a series of principles determined by the autonomous will of the purchaser, and so the process takes place in conformance with the law. And in the Bill it is established that *no one* is excluded from competing as far as he guarantees the fulfillment of the basic principles.&lt;/p&gt; 

&lt;p&gt;Furthermore, the Bill *stimulates* competition, since it tends to generate a supply of software with better conditions of usability, and to better existing work, in a model of continuous improvement.&lt;/p&gt; 

&lt;p&gt;On the other hand, the central aspect of competivity is the chance to provide better choices to the consumer. Now, it is impossible to ignore the fact that marketing does not play a neutral role when the product is offered on the market (since accepting the opposite would lead one to suppose that firms&#39; expenses in marketing lack any sense), and that therefore a significant expense under this heading can influence the decisions of the purchaser. This influence of marketing is in large measure reduced by the bill that we are backing, since the choice within the framework proposed is based on the *technical merits* of the product and not on the effort put into commercialization by the producer; in this sense, competitiveness is increased, since the smallest software producer can compete on equal terms with the most powerful corporations.&lt;/p&gt; 

&lt;p&gt;It is necessary to stress that there is no position more anti-competitive than that of the big software producers, which frequently abuse their dominant position, since in innumerable cases they propose as a solution to problems raised by users: &quot;update your software to the new version&quot; (at the user&#39;s expense, naturally); furthermore, it is common to find arbitrary cessation of technical help for products, which, in the provider&#39;s judgment alone, are &quot;old&quot;; and so, to receive any kind of technical assistance, the user finds himself forced to migrate to new versions (with non-trivial costs, especially as changes in hardware platform are often involved). And as the whole infrastructure is based on proprietary data formats, the user stays &quot;trapped&quot; in the need to continue using products from the same supplier, or to make the huge effort to change to another environment (probably also proprietary).&lt;/p&gt; 

&lt;p&gt;You add: &quot;3. So, by compelling the State to favor a business model based entirely on open source, the bill would only discourage the local and international manufacturing companies, which are the ones which really undertake important expenditures, create a significant number of direct and indirect jobs, as well as contributing to the GNP, as opposed to a model of open source software which tends to have an ever weaker economic impact, since it mainly creates jobs in the service sector.&quot;&lt;/p&gt; 

&lt;p&gt;I do not agree with your statement. Partly because of what you yourself point out in paragraph 6 of your letter, regarding the relative weight of services in the context of software use. This contradiction alone would invalidate your position. The service model, adopted by a large number of companies in the software industry, is much larger in economic terms, and with a tendency to increase, than the licensing of programs.&lt;/p&gt; 

&lt;p&gt;On the other hand, the private sector of the economy has the widest possible freedom to choose the economic model which best suits its interests, even if this freedom of choice is often obscured subliminally by the disproportionate expenditure on marketing by the producers of proprietary software.&lt;/p&gt; 

&lt;p&gt;In addition, a reading of your opinion would lead to the conclusion that the State market is crucial and essential for the proprietary software industry, to such a point that the choice made by the State in this bill would completely eliminate the market for these firms. If that is true, we can deduce that the State must be subsidizing the proprietary software industry. In the unlikely event that this were true, the State would have the right to apply the subsidies in the area it considered of greatest social value; it is undeniable, in this improbable hypothesis, that if the State decided to subsidize software, it would have to do so choosing the free over the proprietary, considering its social effect and the rational use of taxpayers money.&lt;/p&gt; 

&lt;p&gt;In respect of the jobs generated by proprietary software in countries like ours, these mainly concern technical tasks of little aggregate value; at the local level, the technicians who provide support for proprietary software produced by transnational companies do not have the possibility of fixing bugs, not necessarily for lack of technical capability or of talent, but because they do not have access to the source code to fix it. With free software one creates more technically qualified employment and a framework of free competence where success is only tied to the ability to offer good technical support and quality of service, one stimulates the market, and one increases the shared fund of knowledge, opening up alternatives to generate services of greater total value and a higher quality level, to the benefit of all involved: producers, service organizations, and consumers.&lt;/p&gt; 

&lt;p&gt;It is a common phenomenon in developing countries that local software industries obtain the majority of their takings in the service sector, or in the creation of &quot;ad hoc&quot; software. Therefore, any negative impact that the application of the Bill might have in this sector will be more than compensated by a growth in demand for services (as long as these are carried out to high quality standards). If the transnational software companies decide not to compete under these new rules of the game, it is likely that they will undergo some decrease in takings in terms of payment for licenses; however, considering that these firms continue to allege that much of the software used by the State has been illegally copied, one can see that the impact will not be very serious. Certainly, in any case their fortune will be determined by market laws, changes in which cannot be avoided; many firms traditionally associated with proprietary software have already set out on the road (supported by copious expense) of providing services associated with free software, which shows that the models are not mutually exclusive.&lt;/p&gt; 

&lt;p&gt;With this bill the State is deciding that it needs to preserve certain fundamental values. And it is deciding this based on its sovereign power, without affecting any of the constitutional guarantees. If these values could be guaranteed without having to choose a particular economic model, the effects of the law would be even more beneficial. In any case, it should be clear that the State does not choose an economic model; if it happens that there only exists one economic model capable of providing software which provides the basic guarantee of these principles, this is because of historical circumstances, not because of an arbitrary choice of a given model.&lt;/p&gt; 

&lt;p&gt;Your letter continues: &quot;4. The bill imposes the use of open source software without considering the dangers that this can bring from the point of view of security, guarantee, and possible violation of the intellectual property rights of third parties.&quot;&lt;/p&gt; 

&lt;p&gt;Alluding in an abstract way to &quot;the dangers this can bring&quot;, without specifically mentioning a single one of these supposed dangers, shows at the least some lack of knowledge of the topic. So, allow me to enlighten you on these points.&lt;/p&gt; 

&lt;p&gt;On security:&lt;/p&gt; 

&lt;p&gt;National security has already been mentioned in general terms in the initial discussion of the basic principles of the bill. In more specific terms, relative to the security of the software itself, it is well known that all software (whether proprietary or free) contains errors or &quot;bugs&quot; (in programmers&#39; slang). But it is also well known that the bugs in free software are fewer, and are fixed much more quickly, than in proprietary software. It is not in vain that numerous public bodies responsible for the IT security of state systems in developed countries require the use of free software for the same conditions of security and efficiency.&lt;/p&gt; 

&lt;p&gt;What is impossible to prove is that proprietary software is more secure than free, without the public and open inspection of the scientific community and users in general. This demonstration is impossible because the model of proprietary software itself prevents this analysis, so that any guarantee of security is based only on promises of good intentions (biased, by any reckoning) made by the producer itself, or its contractors.&lt;/p&gt; 

&lt;p&gt;It should be remembered that in many cases, the licensing conditions include Non-Disclosure clauses which prevent the user from publicly revealing security flaws found in the licensed proprietary product.&lt;/p&gt; 

&lt;p&gt;In respect of the guarantee:&lt;/p&gt; 

&lt;p&gt;As you know perfectly well, or could find out by reading the &quot;End User License Agreement&quot; of the products you license, in the great majority of cases the guarantees are limited to replacement of the storage medium in case of defects, but in no case is compensation given for direct or indirect damages, loss of profits, etc... If as a result of a security bug in one of your products, not fixed in time by yourselves, an attacker managed to compromise crucial State systems, what guarantees, reparations and compensation would your company make in accordance with your licensing conditions? The guarantees of proprietary software, inasmuch as programs are delivered ``AS IS&#39;&#39;, that is, in the state in which they are, with no additional responsibility of the provider in respect of function, in no way differ from those normal with free software.&lt;/p&gt; 

&lt;p&gt;On Intellectual Property:&lt;/p&gt; 

&lt;p&gt;Questions of intellectual property fall outside the scope of this bill, since they are covered by specific other laws. The model of free software in no way implies ignorance of these laws, and in fact the great majority of free software is covered by copyright. In reality, the inclusion of this question in your observations shows your confusion in respect of the legal framework in which free software is developed. The inclusion of the intellectual property of others in works claimed as one&#39;s own is not a practice that has been noted in the free software community; whereas, unfortunately, it has been in the area of proprietary software. As an example, the condemnation by the Commercial Court of Nanterre, France, on 27th September 2001 of Microsoft Corp. to a penalty of 3 million francs in damages and interest, for violation of intellectual property (piracy, to use the unfortunate term that your firm commonly uses in its publicity).&lt;/p&gt; 

&lt;p&gt;You go on to say that: &quot;The bill uses the concept of open source software incorrectly, since it does not necessarily imply that the software is free or of zero cost, and so arrives at mistaken conclusions regarding State savings, with no cost-benefit analysis to validate its position.&quot;&lt;/p&gt; 

&lt;p&gt;This observation is wrong; in principle, freedom and lack of cost are orthogonal concepts: there is software which is proprietary and charged for (for example, MS Office), software which is proprietary and free of charge (MS Internet Explorer), software which is free and charged for (Red Hat, SuSE etc GNU/Linux distributions), software which is free and not charged for (Apache, Open Office, Mozilla), and even software which can be licensed in a range of combinations (MySQL).&lt;/p&gt; 

&lt;p&gt;Certainly free software is not necessarily free of charge. And the text of the bill does not state that it has to be so, as you will have noted after reading it. The definitions included in the Bill state clearly *what* should be considered free software, at no point referring to freedom from charges. Although the possibility of savings in payments for proprietary software licenses are mentioned, the foundations of the bill clearly refer to the fundamental guarantees to be preserved and to the stimulus to local technological development. Given that a democratic State must support these principles, it has no other choice than to use software with publicly available source code, and to exchange information only in standard formats.&lt;/p&gt; 

&lt;p&gt;If the State does not use software with these characteristics, it will be weakening basic republican principles. Luckily, free software also implies lower total costs; however, even given the hypothesis (easily disproved) that it was more expensive than proprietary software, the simple existence of an effective free software tool for a particular IT function would oblige the State to use it; not by command of this Bill, but because of the basic principles we enumerated at the start, and which arise from the very essence of the lawful democratic State.&lt;/p&gt; 

&lt;p&gt;You continue: &quot;6. It is wrong to think that Open Source Software is free of charge. Research by the Gartner Group (an important investigator of the technological market recognized at world level) has shown that the cost of purchase of software (operating system and applications) is only 8% of the total cost which firms and institutions take on for a rational and truly beneficial use of the technology. The other 92% consists of: installation costs, enabling, support, maintenance, administration, and down-time.&quot;&lt;/p&gt; 

&lt;p&gt;This argument repeats that already given in paragraph 5 and partly contradicts paragraph 3. For the sake of brevity we refer to the comments on those paragraphs. However, allow me to point out that your conclusion is logically false: even if according to Gartner Group the cost of software is on average only 8% of the total cost of use, this does not in any way deny the existence of software which is free of charge, that is, with a licensing cost of zero.&lt;/p&gt; 

&lt;p&gt;In addition, in this paragraph you correctly point out that the service components and losses due to down-time make up the largest part of the total cost of software use, which, as you will note, contradicts your statement regarding the small value of services suggested in paragraph 3. Now the use of free software contributes significantly to reduce the remaining life-cycle costs. This reduction in the costs of installation, support etc. can be noted in several areas: in the first place, the competitive service model of free software, support and maintenance for which can be freely contracted out to a range of suppliers competing on the grounds of quality and low cost. This is true for installation, enabling, and support, and in large part for maintenance. In the second place, due to the reproductive characteristics of the model, maintenance carried out for an application is easily replicable, without incurring large costs (that is, without paying more than once for the same thing) since modifications, if one wishes, can be incorporated in the common fund of knowledge. Thirdly, the huge costs caused by non-functioning software (&quot;blue screens of death&quot;, malicious code such as virus, worms, and trojans, exceptions, general protection faults and other well-known problems) are reduced considerably by using more stable software; and it is well known that one of the most notable virtues of free software is its stability.&lt;/p&gt; 

&lt;p&gt;You further state that: &quot;7. One of the arguments behind the bill is the supposed freedom from costs of open-source software, compared with the costs of commercial software, without taking into account the fact that there exist types of volume licensing which can be highly advantageous for the State, as has happened in other countries.&quot;&lt;/p&gt; 

&lt;p&gt;I have already pointed out that what is in question is not the cost of the software but the principles of freedom of information, accessibility, and security. These arguments have been covered extensively in the preceding paragraphs to which I would refer you.&lt;/p&gt; 

&lt;p&gt;On the other hand, there certainly exist types of volume licensing (although unfortunately proprietary software does not satisfy the basic principles). But as you correctly pointed out in the immediately preceding paragraph of your letter, they only manage to reduce the impact of a component which makes up no more than 8% of the total.&lt;/p&gt; 

&lt;p&gt;You continue: &quot;8. In addition, the alternative adopted by the bill (I) is clearly more expensive, due to the high costs of software migration, and (II) puts at risk compatibility and interoperability of the IT platforms within the State, and between the State and the private sector, given the hundreds of versions of open source software on the market.&quot;&lt;/p&gt; 

&lt;p&gt;Let us analyze your statement in two parts. Your first argument, that migration implies high costs, is in reality an argument in favor of the Bill. Because the more time goes by, the more difficult migration to another technology will become; and at the same time, the security risks associated with proprietary software will continue to increase. In this way, the use of proprietary systems and formats will make the State ever more dependent on specific suppliers. Once a policy of using free software has been established (which certainly, does imply some cost) then on the contrary migration from one system to another becomes very simple, since all data is stored in open formats. On the other hand, migration to an open software context implies no more costs than migration between two different proprietary software contexts, which invalidates your argument completely.&lt;/p&gt; 

&lt;p&gt;The second argument refers to &quot;problems in interoperability of the IT platforms within the State, and between the State and the private sector&quot; This statement implies a certain lack of knowledge of the way in which free software is built, which does not maximize the dependence of the user on a particular platform, as normally happens in the realm of proprietary software. Even when there are multiple free software distributions, and numerous programs which can be used for the same function, interoperability is guaranteed as much by the use of standard formats, as required by the bill, as by the possibility of creating interoperable software given the availability of the source code.&lt;/p&gt; 

&lt;p&gt;You then say that: &quot;9. The majority of open source code does not offer adequate levels of service nor the guarantee from recognized manufacturers of high productivity on the part of the users, which has led various public organizations to retract their decision to go with an open source software solution and to use commercial software in its place.&quot;&lt;/p&gt; 

&lt;p&gt;This observation is without foundation. In respect of the guarantee, your argument was rebutted in the response to paragraph 4. In respect of support services, it is possible to use free software without them (just as also happens with proprietary software), but anyone who does need them can obtain support separately, whether from local firms or from international corporations, again just as in the case of proprietary software.&lt;/p&gt; 

&lt;p&gt;On the other hand, it would contribute greatly to our analysis if you could inform us about free software projects *established* in public bodies which have already been abandoned in favor of proprietary software. We know of a good number of cases where the opposite has taken place, but not know of any where what you describe has taken place.&lt;/p&gt; 

&lt;p&gt;You continue by observing that: &quot;10. The bill discourages the creativity of the Peruvian software industry, which invoices 40 million US$/year, exports 4 million US$ (10th in ranking among non-traditional exports, more than handicrafts) and is a source of highly qualified employment. With a law that encourages the use of open source, software programmers lose their intellectual property rights and their main source of payment.&quot;&lt;/p&gt; 

&lt;p&gt;It is clear enough that nobody is forced to commercialize their code as free software. The only thing to take into account is that if it is not free software, it cannot be sold to the public sector. This is not in any case the main market for the national software industry. We covered some questions referring to the influence of the Bill on the generation of employment which would be both highly technically qualified and in better conditions for competition above, so it seems unnecessary to insist on this point.&lt;/p&gt; 

&lt;p&gt;What follows in your statement is incorrect. On the one hand, no author of free software loses his intellectual property rights, unless he expressly wishes to place his work in the public domain. The free software movement has always been very respectful of intellectual property, and has generated widespread public recognition of its authors. Names like those of Richard Stallman, Linus Torvalds, Guido van Rossum, Larry Wall, Miguel de Icaza, Andrew Tridgell, Theo de Raadt, Andrea Arcangeli, Bruce Perens, Darren Reed, Alan Cox, Eric Raymond, and many others, are recognized world-wide for their contributions to the development of software that is used today by millions of people throughout the world. On the other hand, to say that the rewards for authors rights make up the main source of payment of Peruvian programmers is in any case a guess, in particular since there is no proof to this effect, nor a demonstration of how the use of free software by the State would influence these payments.&lt;/p&gt; 

&lt;p&gt;You go on to say that: &quot;11. Open source software, since it can be distributed without charge, does not allow the generation of income for its developers through exports. In this way, the multiplier effect of the sale of software to other countries is weakened, and so in turn is the growth of the industry, while Government rules ought on the contrary to stimulate local industry.&quot;&lt;/p&gt; 

&lt;p&gt;This statement shows once again complete ignorance of the mechanisms of and market for free software. It tries to claim that the market of sale of non- exclusive rights for use (sale of licenses) is the only possible one for the software industry, when you yourself pointed out several paragraphs above that it is not even the most important one. The incentives that the bill offers for the growth of a supply of better qualified professionals, together with the increase in experience that working on a large scale with free software within the State will bring for Peruvian technicians, will place them in a highly competitive position to offer their services abroad.&lt;/p&gt; 

&lt;p&gt;You then state that: &quot;12. In the Forum, the use of open source software in education was discussed, without mentioning the complete collapse of this initiative in a country like Mexico, where precisely the State employees who founded the project now state that open source software did not make it possible to offer a learning experience to pupils in the schools, did not take into account the capability at a national level to give adequate support to the platform, and that the software did not and does not allow for the levels of platform integration that now exist in schools.&quot;&lt;/p&gt; 

&lt;p&gt;In fact Mexico has gone into reverse with the Red Escolar (Schools Network) project. This is due precisely to the fact that the driving forces behind the Mexican project used license costs as their main argument, instead of the other reasons specified in our project, which are far more essential. Because of this conceptual mistake, and as a result of the lack of effective support from the SEP (Secretary of State for Public Education), the assumption was made that to implant free software in schools it would be enough to drop their software budget and send them a CD ROM with Gnu/Linux instead. Of course this failed, and it couldn&#39;t have been otherwise, just as school laboratories fail when they use proprietary software and have no budget for implementation and maintenance. That&#39;s exactly why our bill is not limited to making the use of free software mandatory, but recognizes the need to create a viable migration plan, in which the State undertakes the technical transition in an orderly way in order to then enjoy the advantages of free software.&lt;/p&gt; 

&lt;p&gt;You end with a rhetorical question: &quot;13. If open source software satisfies all the requirements of State bodies, why do you need a law to adopt it? Shouldn&#39;t it be the market which decides freely which products give most benefits or value?&quot;&lt;/p&gt; 

&lt;p&gt;We agree that in the private sector of the economy, it must be the market that decides which products to use, and no state interference is permissible there. However, in the case of the public sector, the reasoning is not the same: as we have already established, the state archives, handles, and transmits information which does not belong to it, but which is entrusted to it by citizens, who have no alternative under the rule of law. As a counterpart to this legal requirement, the State must take extreme measures to safeguard the integrity, confidentiality, and accessibility of this information. The use of proprietary software raises serious doubts as to whether these requirements can be fulfilled, lacks conclusive evidence in this respect, and so is not suitable for use in the public sector.&lt;/p&gt; 

&lt;p&gt;The need for a law is based, firstly, on the realization of the fundamental principles listed above in the specific area of software; secondly, on the fact that the State is not an ideal homogeneous entity, but made up of multiple bodies with varying degrees of autonomy in decision making. Given that it is inappropriate to use proprietary software, the fact of establishing these rules in law will prevent the personal discretion of any state employee from putting at risk the information which belongs to citizens. And above all, because it constitutes an up-to-date reaffirmation in relation to the means of management and communication of information used today, it is based on the republican principle of openness to the public.&lt;/p&gt; 

&lt;p&gt;In conformance with this universally accepted principle, the citizen has the right to know all information held by the State and not covered by well- founded declarations of secrecy based on law. Now, software deals with information and is itself information. Information in a special form, capable of being interpreted by a machine in order to execute actions, but crucial information all the same because the citizen has a legitimate right to know, for example, how his vote is computed or his taxes calculated. And for that he must have free access to the source code and be able to prove to his satisfaction the programs used for electoral computations or calculation of his taxes.&lt;/p&gt; 

&lt;p&gt;I wish you the greatest respect, and would like to repeat that my office will always be open for you to expound your point of view to whatever level of detail you consider suitable.&lt;/p&gt; 

&lt;p&gt;Cordially,&lt;br&gt; 
DR. EDGAR DAVID VILLANUEVA NUÑEZ&lt;br&gt; 
Congressman of the Republic of Perú.&lt;/p&gt; 
&lt;/blockquote&gt;
</description>
        </item>
        
        <item>
                <title>Officeshots still going strong</title>
                <link>http://people.skolelinux.org/pere/blog/Officeshots_still_going_strong.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Officeshots_still_going_strong.html</guid>
                <pubDate>Sat, 25 Dec 2010 09:40:00 +0100</pubDate>
                <description>&lt;p&gt;Half a year ago I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Officeshots_taking_shape.html&quot;&gt;wrote
a bit&lt;/a&gt; about &lt;a href=&quot;http://www.officeshots.org/&quot;&gt;OfficeShots&lt;/a&gt;,
a web service to allow anyone to test how ODF documents are handled by
the different programs reading and writing the ODF format.&lt;/p&gt;

&lt;p&gt;I just had a look at the service, and it seem to be going strong.
Very interesting to see the results reported in the gallery, how
different Office implementations handle different ODF features.  Sad
to see that KOffice was not doing it very well, and happy to see that
LibreOffice has been tested already (but sadly not listed as a option
for OfficeShots users yet).  I am glad to see that the ODF community
got such a great test tool available.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>How to test if a laptop is working with Linux</title>
                <link>http://people.skolelinux.org/pere/blog/How_to_test_if_a_laptop_is_working_with_Linux.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_to_test_if_a_laptop_is_working_with_Linux.html</guid>
                <pubDate>Wed, 22 Dec 2010 14:55:00 +0100</pubDate>
                <description>&lt;p&gt;The last few days I have spent at work here at the &lt;a
href=&quot;http://www.uio.no/&quot;&gt;University of Oslo&lt;/a&gt; testing if the new
batch of computers will work with Linux.  Every year for the last few
years the university have organised shared bid of a few thousand
computers, and this year HP won the bid.  Two different desktops and
five different laptops are on the list this year.  We in the UNIX
group want to know which one of these computers work well with RHEL
and Ubuntu, the two Linux distributions we currently handle at the
university.&lt;/p&gt;

&lt;p&gt;My test method is simple, and I share it here to get feedback and
perhaps inspire others to test hardware as well.  To test, I PXE
install the OS version of choice, and log in as my normal user and run
a few applications and plug in selected pieces of hardware.  When
something fail, I make a note about this in the test matrix and move
on.  If I have some spare time I try to report the bug to the OS
vendor, but as I only have the machines for a short time, I rarely
have the time to do this for all the problems I find.&lt;/p&gt;

&lt;p&gt;Anyway, to get to the point of this post.  Here is the simple tests
I perform on a new model.&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Is PXE installation working?  I&#39;m testing with RHEL6, Ubuntu Lucid
and Ubuntu Maverik at the moment.  If I feel like it, I also test with
RHEL5 and Debian Edu/Squeeze.&lt;/li&gt;

&lt;li&gt;Is X.org working?  If the graphical login screen show up after
installation, X.org is working.&lt;/li&gt;

&lt;li&gt;Is hardware accelerated OpenGL working?  Running glxgears (in
package mesa-utils on Ubuntu) and writing down the frames per second
reported by the program.&lt;/li&gt;

&lt;li&gt;Is sound working?  With Gnome and KDE, a sound is played when
logging in, and if I can hear this the test is successful.  If there
are several audio exits on the machine, I try them all and check if
the Gnome/KDE audio mixer can control where to send the sound.  I
normally test this by playing
&lt;a href=&quot;http://www.nuug.no/aktiviteter/20101012-chef/ &quot;&gt;a HTML5
video&lt;/a&gt; in Firefox/Iceweasel.&lt;/li&gt;

&lt;li&gt;Is the USB subsystem working?  I test this by plugging in a USB
memory stick and see if Gnome/KDE notices this.&lt;/li&gt;

&lt;li&gt;Is the CD/DVD player working?  I test this by inserting any CD/DVD
I have lying around, and see if Gnome/KDE notices this.&lt;/li&gt;

&lt;li&gt;Is any built in camera working?  Test using cheese, and see if a
picture from the v4l device show up.&lt;/li&gt;

&lt;li&gt;Is bluetooth working?  Use the Gnome/KDE browsing tool to see if
any bluetooth devices are discovered.  In my office, I normally see a
few.&lt;/li&gt;

&lt;li&gt;For laptops, is the SD or Compaq Flash reader working.  I have
memory modules lying around, and stick them in and see if Gnome/KDE
notice this.&lt;/li&gt;

&lt;li&gt;For laptops, is suspend/hibernate working?  I&#39;m testing if the
special button work, and if the laptop continue to work after
resume.&lt;/li&gt;

&lt;li&gt;For laptops, is the extra buttons working, like audio level,
adjusting background light, switching on/off external video output,
switching on/off wifi, bluetooth, etc?  The set of buttons differ from
laptop to laptop, so I just write down which are working and which are
not.&lt;/li&gt;

&lt;li&gt;Some laptops have smart card readers, finger print readers,
acceleration sensors etc.  I rarely test these, as I do not know how
to quickly test if they are working or not, so I only document their
existence.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;By now I suspect you are really curious what the test results are
for the HP machines I am testing.  I&#39;m not done yet, so I will report
the test results later.  For now I can report that HP 8100 Elite work
fine, and hibernation fail with HP EliteBook 8440p on Ubuntu Lucid,
and audio fail on RHEL6.  Ubuntu Maverik worked with 8440p.  As you
can see, I have most machines left to test.  One interesting
observation is that Ubuntu Lucid has almost twice the frame rate than
RHEL6 with glxgears.  No idea why.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Some thoughts on BitCoins</title>
                <link>http://people.skolelinux.org/pere/blog/Some_thoughts_on_BitCoins.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Some_thoughts_on_BitCoins.html</guid>
                <pubDate>Sat, 11 Dec 2010 15:10:00 +0100</pubDate>
                <description>&lt;p&gt;As I continue to explore
&lt;a href=&quot;http://www.bitcoin.org/&quot;&gt;BitCoin&lt;/a&gt;, I&#39;ve starting to wonder
what properties the system have, and how it will be affected by laws
and regulations here in Norway.  Here are some random notes.&lt;/p&gt;

&lt;p&gt;One interesting thing to note is that since the transactions are
verified using a peer to peer network, all details about a transaction
is known to everyone.  This means that if a BitCoin address has been
published like I did with mine in my initial post about BitCoin, it is
possible for everyone to see how many BitCoins have been transfered to
that address.  There is even a web service to look at the details for
all transactions.  There I can see that my address
&lt;a href=&quot;http://blockexplorer.com/address/15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;
have received 16.06 Bitcoin, the
&lt;a href=&quot;http://blockexplorer.com/address/1LfdGnGuWkpSJgbQySxxCWhv8MHqvwst3&quot;&gt;1LfdGnGuWkpSJgbQySxxCWhv8MHqvwst3&lt;/a&gt;
address of Simon Phipps have received 181.97 BitCoin and the address
&lt;a href=&quot;http://blockexplorer.com/address/1MCwBbhNGp5hRm5rC1Aims2YFRe2SXPYKt&quot;&gt;1MCwBbhNGp5hRm5rC1Aims2YFRe2SXPYKt&lt;/A&gt;
of EFF have received 2447.38 BitCoins so far.  Thank you to each and
every one of you that donated bitcoins to support my activity. The
fact that anyone can see how much money was transfered to a given
address make it more obvious why the BitCoin community recommend to
generate and hand out a new address for each transaction.  I&#39;m told
there is no way to track which addresses belong to a given person or
organisation without the person or organisation revealing it
themselves, as Simon, EFF and I have done.&lt;/p&gt;

&lt;p&gt;In Norway, and in most other countries, there are laws and
regulations limiting how much money one can transfer across the border
without declaring it.  There are money laundering, tax and accounting
laws and regulations I would expect to apply to the use of BitCoin.
If the Skolelinux foundation
(&lt;a href=&quot;http://linuxiskolen.no/slxdebianlabs/donations.html&quot;&gt;SLX
Debian Labs&lt;/a&gt;) were to accept donations in BitCoin in addition to
normal bank transfers like EFF is doing, how should this be accounted?
Given that it is impossible to know if money can cross the border or
not, should everything or nothing be declared?  What exchange rate
should be used when calculating taxes?  Would receivers have to pay
income tax if the foundation were to pay Skolelinux contributors in
BitCoin?  I have no idea, but it would be interesting to know.&lt;/p&gt;

&lt;p&gt;For a currency to be useful and successful, it must be trusted and
accepted by a lot of users.  It must be possible to get easy access to
the currency (as a wage or using currency exchanges), and it must be
easy to spend it.  At the moment BitCoin seem fairly easy to get
access to, but there are very few places to spend it.  I am not really
a regular user of any of the vendor types currently accepting BitCoin,
so I wonder when my kind of shop would start accepting BitCoins.  I
would like to buy electronics, travels and subway tickets, not herbs
and books. :) The currency is young, and this will improve over time
if it become popular, but I suspect regular banks will start to lobby
to get BitCoin declared illegal if it become popular.  I&#39;m sure they
will claim it is helping fund terrorism and money laundering (which
probably would be true, as is any currency in existence), but I
believe the problems should be solved elsewhere and not by blaming
currencies.&lt;/p&gt;

&lt;p&gt;The process of creating new BitCoins is called mining, and it is
CPU intensive process that depend on a bit of luck as well (as one is
competing against all the other miners currently spending CPU cycles
to see which one get the next lump of cash).  The &quot;winner&quot; get 50
BitCoin when this happen.  Yesterday I came across the obvious way to
join forces to increase ones changes of getting at least some coins,
by coordinating the work on mining BitCoins across several machines
and people, and sharing the result if one is lucky and get the 50
BitCoins.  Check out
&lt;a href=&quot;http://www.bluishcoder.co.nz/bitcoin-pool/&quot;&gt;BitCoin Pool&lt;/a&gt;
if this sounds interesting.  I have not had time to try to set up a
machine to participate there yet, but have seen that running on ones
own for a few days have not yield any BitCoins througth mining
yet.&lt;/p&gt;

&lt;p&gt;Update 2010-12-15: Found an &lt;a
href=&quot;http://inertia.posterous.com/reply-to-the-underground-economist-why-bitcoi&quot;&gt;interesting
criticism&lt;/a&gt; of bitcoin.  Not quite sure how valid it is, but thought
it was interesting to read.  The arguments presented seem to be
equally valid for gold, which was used as a currency for many years.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Now accepting bitcoins - anonymous and distributed p2p crypto-money</title>
                <link>http://people.skolelinux.org/pere/blog/Now_accepting_bitcoins___anonymous_and_distributed_p2p_crypto_money.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Now_accepting_bitcoins___anonymous_and_distributed_p2p_crypto_money.html</guid>
                <pubDate>Fri, 10 Dec 2010 08:20:00 +0100</pubDate>
                <description>&lt;p&gt;With this weeks lawless
&lt;a href=&quot;http://www.salon.com/news/opinion/glenn_greenwald/2010/12/06/wikileaks/index.html&quot;&gt;governmental
attacks&lt;/a&gt; on Wikileak and
&lt;a href=&quot;http://www.salon.com/technology/dan_gillmor/2010/12/06/war_on_speech&quot;&gt;free
speech&lt;/a&gt;, it has become obvious that PayPal, visa and mastercard can
not be trusted to handle money transactions.
A blog post from
&lt;a href=&quot;http://webmink.com/2010/12/06/now-accepting-bitcoin/&quot;&gt;Simon
Phipps on bitcoin&lt;/a&gt; reminded me about a project that a friend of
mine mentioned earlier.  I decided to follow Simon&#39;s example, and get
involved with &lt;a href=&quot;http://www.bitcoin.org/&quot;&gt;BitCoin&lt;/a&gt;.  I got
some help from my friend to get it all running, and he even handed me
some bitcoins to get started.  I even donated a few bitcoins to Simon
for helping me remember BitCoin.&lt;/p&gt;

&lt;p&gt;So, what is bitcoins, you probably wonder?  It is a digital
crypto-currency, decentralised and handled using peer-to-peer
networks.  It allows anonymous transactions and prohibits central
control over the transactions, making it impossible for governments
and companies alike to block donations and other transactions.  The
source is free software, and while the key dependency wxWidgets 2.9
for the graphical user interface is missing in Debian, the command
line client builds just fine.  Hopefully Jonas
&lt;a href=&quot;http://bugs.debian.org/578157&quot;&gt;will get the package into
Debian&lt;/a&gt; soon.&lt;/p&gt;

&lt;p&gt;Bitcoins can be converted to other currencies, like USD and EUR.
There are &lt;a href=&quot;http://www.bitcoin.org/trade&quot;&gt;companies accepting
bitcoins&lt;/a&gt; when selling services and goods, and there are even
currency &quot;stock&quot; markets where the exchange rate is decided.  There
are not many users so far, but the concept seems promising.  If you
want to get started and lack a friend with any bitcoins to spare,
you can even get
&lt;a href=&quot;https://freebitcoins.appspot.com/&quot;&gt;some for free&lt;/a&gt; (0.05
bitcoin at the time of writing).  Use
&lt;a href=&quot;http://www.bitcoinwatch.com/&quot;&gt;BitcoinWatch&lt;/a&gt; to keep an eye
on the current exchange rates.&lt;/p&gt;

&lt;p&gt;As an experiment, I have decided to set up bitcoind on one of my
machines.  If you want to support my activity, please send Bitcoin
donations to the address
&lt;b&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/b&gt;.  Thank you!&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Student group continue the work on my Reprap 3D printer</title>
                <link>http://people.skolelinux.org/pere/blog/Student_group_continue_the_work_on_my_Reprap_3D_printer.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Student_group_continue_the_work_on_my_Reprap_3D_printer.html</guid>
                <pubDate>Thu, 9 Dec 2010 19:30:00 +0100</pubDate>
                <description>&lt;p&gt;A few days ago, I was introduces to some students in the robot
student assosiation &lt;a href=&quot;http://www.robotica.no/&quot;&gt;Robotica
Osloensis&lt;/a&gt; at the University of Oslo where I work, who planned to
get their own 3D printer.  They wanted to learn from me based on my
work in the area.  After having a short lunch meeting with them, I
offered them to borrow my reprap kit, as I never had time to complete
the build and this seem unlike to change any time soon.  I look
forward to see how this goes.  This monday their volunteer driver
picked up my kit and drove it to their lab, and tomorrow I am told the
last exam is over so they can start work on getting the 3D printer
operational.&lt;/p&gt;

&lt;p&gt;The robotic group have already build several robots on their own,
and seem capable of getting the reprap operational.  I really look
forward to being able to print all the cool 3D designs published on
&lt;a href=&quot;http://www.thingiverse.com/&quot;&gt;Thingiverse&lt;/a&gt;.  I even got
some 3D scans I got made during Dagen@IFI when one of the groups at
the computer science department at the university demonstrated their
very cool 3D scanner.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu development gathering and General Assembly for FRiSK</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_development_gathering_and_General_Assembly_for_FRiSK.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_development_gathering_and_General_Assembly_for_FRiSK.html</guid>
                <pubDate>Mon, 29 Nov 2010 18:40:00 +0100</pubDate>
                <description>&lt;p&gt;On friday, the first Debian Edu / Skolelinux
&lt;a href=&quot;http://www.friprogramvareiskolen.no/Gathering/2010-12-03-05-Oslo&quot;&gt;development
gathering&lt;/a&gt; in a long time take place here in Oslo, Norway.  I
really look forward to seeing all the good people working on the
Squeeze release.  The gathering is open for everyone interested in
learning more about Debian Edu / Skolelinux.&lt;/p&gt;

&lt;p&gt;On Saturday, the Norwegian member organization taking care of
organizing these development gatherings, Fri Programvare i Skolen,
will hold its
&lt;a href=&quot;http://friprogramvareiskolen.no/Genfors/2010&quot;&gt;General Assembly
for 2010&lt;/a&gt;.  Membership is open for all, and currently there are 388
people registered as members.  Last year 32 members cast their vote in
the memberdb based election system.  I hope more people find time to
vote this year.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Why isn&#39;t Debian Edu using VLC?</title>
                <link>http://people.skolelinux.org/pere/blog/Why_isn_t_Debian_Edu_using_VLC_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Why_isn_t_Debian_Edu_using_VLC_.html</guid>
                <pubDate>Sat, 27 Nov 2010 11:30:00 +0100</pubDate>
                <description>&lt;p&gt;In the latest issue of Linux Journal, the readers choices were
presented, and the winner among the multimedia player were VLC.
Personally, I like VLC, and it is my player of choice when I first try
to play a video file or stream.  Only if VLC fail will I drag out
gmplayer to see if it can do better.  The reason is mostly the failure
model and trust.  When VLC fail, it normally pop up a error message
reporting the problem.  When mplayer fail, it normally segfault or
just hangs.  The latter failure mode drain my trust in the program.&lt;p&gt;

&lt;p&gt;But even if VLC is my player of choice, we have choosen to use
mplayer in &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian
Edu/Skolelinux&lt;/a&gt;.  The reason is simple.  We need a good browser
plugin to play web videos seamlessly, and the VLC browser plugin is
not very good.  For example, it lack in-line control buttons, so there
is no way for the user to pause the video.  Also, when I
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/BrowserMultimedia&quot;&gt;last
tested the browser plugins&lt;/a&gt; available in Debian, the VLC plugin
failed on several video pages where mplayer based plugins worked.  If
the browser plugin for VLC was as good as the gecko-mediaplayer
package (which uses mplayer), we would switch.&lt;/P&gt;

&lt;p&gt;While VLC is a good player, its user interface is slightly
annoying.  The most annoying feature is its inconsistent use of
keyboard shortcuts.  When the player is in full screen mode, its
shortcuts are different from when it is playing the video in a window.
For example, space only work as pause when in full screen mode.  I
wish it had consisten shortcuts and that space also would work when in
window mode.  Another nice shortcut in gmplayer is [enter] to restart
the current video.  It is very nice when playing short videos from the
web and want to restart it when new people arrive to have a look at
what is going on.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Lenny-&gt;Squeeze upgrades of the Gnome and KDE desktop, now with apt-get autoremove</title>
                <link>http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades_of_the_Gnome_and_KDE_desktop__now_with_apt_get_autoremove.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades_of_the_Gnome_and_KDE_desktop__now_with_apt_get_autoremove.html</guid>
                <pubDate>Mon, 22 Nov 2010 14:15:00 +0100</pubDate>
                <description>&lt;p&gt;Michael Biebl suggested to me on IRC, that I changed my automated
upgrade testing of the
&lt;a href=&quot;http://people.skolelinux.org/~pere/debian-upgrade-testing/&quot;&gt;Lenny
Gnome and KDE Desktop&lt;/a&gt; to do &lt;tt&gt;apt-get autoremove&lt;/tt&gt; when using apt-get.
This seem like a very good idea, so I adjusted by test scripts and
can now present the updated result from today:&lt;/p&gt;

&lt;p&gt;This is for Gnome:&lt;/p&gt;

&lt;p&gt;Installed using apt-get, missing with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  apache2.2-bin
  aptdaemon
  baobab
  binfmt-support
  browser-plugin-gnash
  cheese-common
  cli-common
  cups-pk-helper
  dmz-cursor-theme
  empathy
  empathy-common
  freedesktop-sound-theme
  freeglut3
  gconf-defaults-service
  gdm-themes
  gedit-plugins
  geoclue
  geoclue-hostip
  geoclue-localnet
  geoclue-manual
  geoclue-yahoo
  gnash
  gnash-common
  gnome
  gnome-backgrounds
  gnome-cards-data
  gnome-codec-install
  gnome-core
  gnome-desktop-environment
  gnome-disk-utility
  gnome-screenshot
  gnome-search-tool
  gnome-session-canberra
  gnome-system-log
  gnome-themes-extras
  gnome-themes-more
  gnome-user-share
  gstreamer0.10-fluendo-mp3
  gstreamer0.10-tools
  gtk2-engines
  gtk2-engines-pixbuf
  gtk2-engines-smooth
  hamster-applet
  libapache2-mod-dnssd
  libapr1
  libaprutil1
  libaprutil1-dbd-sqlite3
  libaprutil1-ldap
  libart2.0-cil
  libboost-date-time1.42.0
  libboost-python1.42.0
  libboost-thread1.42.0
  libchamplain-0.4-0
  libchamplain-gtk-0.4-0
  libcheese-gtk18
  libclutter-gtk-0.10-0
  libcryptui0
  libdiscid0
  libelf1
  libepc-1.0-2
  libepc-common
  libepc-ui-1.0-2
  libfreerdp-plugins-standard
  libfreerdp0
  libgconf2.0-cil
  libgdata-common
  libgdata7
  libgdu-gtk0
  libgee2
  libgeoclue0
  libgexiv2-0
  libgif4
  libglade2.0-cil
  libglib2.0-cil
  libgmime2.4-cil
  libgnome-vfs2.0-cil
  libgnome2.24-cil
  libgnomepanel2.24-cil
  libgpod-common
  libgpod4
  libgtk2.0-cil
  libgtkglext1
  libgtksourceview2.0-common
  libmono-addins-gui0.2-cil
  libmono-addins0.2-cil
  libmono-cairo2.0-cil
  libmono-corlib2.0-cil
  libmono-i18n-west2.0-cil
  libmono-posix2.0-cil
  libmono-security2.0-cil
  libmono-sharpzip2.84-cil
  libmono-system2.0-cil
  libmtp8
  libmusicbrainz3-6
  libndesk-dbus-glib1.0-cil
  libndesk-dbus1.0-cil
  libopal3.6.8
  libpolkit-gtk-1-0
  libpt2.6.7
  libpython2.6
  librpm1
  librpmio1
  libsdl1.2debian
  libsrtp0
  libssh-4
  libtelepathy-farsight0
  libtelepathy-glib0
  libtidy-0.99-0
  media-player-info
  mesa-utils
  mono-2.0-gac
  mono-gac
  mono-runtime
  nautilus-sendto
  nautilus-sendto-empathy
  p7zip-full
  pkg-config
  python-aptdaemon
  python-aptdaemon-gtk
  python-axiom
  python-beautifulsoup
  python-bugbuddy
  python-clientform
  python-coherence
  python-configobj
  python-crypto
  python-cupshelpers
  python-elementtree
  python-epsilon
  python-evolution
  python-feedparser
  python-gdata
  python-gdbm
  python-gst0.10
  python-gtkglext1
  python-gtksourceview2
  python-httplib2
  python-louie
  python-mako
  python-markupsafe
  python-mechanize
  python-nevow
  python-notify
  python-opengl
  python-openssl
  python-pam
  python-pkg-resources
  python-pyasn1
  python-pysqlite2
  python-rdflib
  python-serial
  python-tagpy
  python-twisted-bin
  python-twisted-conch
  python-twisted-core
  python-twisted-web
  python-utidylib
  python-webkit
  python-xdg
  python-zope.interface
  remmina
  remmina-plugin-data
  remmina-plugin-rdp
  remmina-plugin-vnc
  rhythmbox-plugin-cdrecorder
  rhythmbox-plugins
  rpm-common
  rpm2cpio
  seahorse-plugins
  shotwell
  software-center
  system-config-printer-udev
  telepathy-gabble
  telepathy-mission-control-5
  telepathy-salut
  tomboy
  totem
  totem-coherence
  totem-mozilla
  totem-plugins
  transmission-common
  xdg-user-dirs
  xdg-user-dirs-gtk
  xserver-xephyr
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using apt-get, removed with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  cheese
  ekiga
  eog
  epiphany-extensions
  evolution-exchange
  fast-user-switch-applet
  file-roller
  gcalctool
  gconf-editor
  gdm
  gedit
  gedit-common
  gnome-games
  gnome-games-data
  gnome-nettool
  gnome-system-tools
  gnome-themes
  gnuchess
  gucharmap
  guile-1.8-libs
  libavahi-ui0
  libdmx1
  libgalago3
  libgtk-vnc-1.0-0
  libgtksourceview2.0-0
  liblircclient0
  libsdl1.2debian-alsa
  libspeexdsp1
  libsvga1
  rhythmbox
  seahorse
  sound-juicer
  system-config-printer
  totem-common
  transmission-gtk
  vinagre
  vino
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, missing with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  gstreamer0.10-gnomevfs
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, removed with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
[nothing]
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;This is for KDE:&lt;/p&gt;

&lt;p&gt;Installed using apt-get, missing with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  ksmserver
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using apt-get, removed with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  kwin
  network-manager-kde
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, missing with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  arts
  dolphin
  freespacenotifier
  google-gadgets-gst
  google-gadgets-xul
  kappfinder
  kcalc
  kcharselect
  kde-core
  kde-plasma-desktop
  kde-standard
  kde-window-manager
  kdeartwork
  kdeartwork-emoticons
  kdeartwork-style
  kdeartwork-theme-icon
  kdebase
  kdebase-apps
  kdebase-workspace
  kdebase-workspace-bin
  kdebase-workspace-data
  kdeeject
  kdelibs
  kdeplasma-addons
  kdeutils
  kdewallpapers
  kdf
  kfloppy
  kgpg
  khelpcenter4
  kinfocenter
  konq-plugins-l10n
  konqueror-nsplugins
  kscreensaver
  kscreensaver-xsavers
  ktimer
  kwrite
  libgle3
  libkde4-ruby1.8
  libkonq5
  libkonq5-templates
  libnetpbm10
  libplasma-ruby
  libplasma-ruby1.8
  libqt4-ruby1.8
  marble-data
  marble-plugins
  netpbm
  nuvola-icon-theme
  plasma-dataengines-workspace
  plasma-desktop
  plasma-desktopthemes-artwork
  plasma-runners-addons
  plasma-scriptengine-googlegadgets
  plasma-scriptengine-python
  plasma-scriptengine-qedje
  plasma-scriptengine-ruby
  plasma-scriptengine-webkit
  plasma-scriptengines
  plasma-wallpapers-addons
  plasma-widget-folderview
  plasma-widget-networkmanagement
  ruby
  sweeper
  update-notifier-kde
  xscreensaver-data-extra
  xscreensaver-gl
  xscreensaver-gl-extra
  xscreensaver-screensaver-bsod
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, removed with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  ark
  google-gadgets-common
  google-gadgets-qt
  htdig
  kate
  kdebase-bin
  kdebase-data
  kdepasswd
  kfind
  klipper
  konq-plugins
  konqueror
  ksysguard
  ksysguardd
  libarchive1
  libcln6
  libeet1
  libeina-svn-06
  libggadget-1.0-0b
  libggadget-qt-1.0-0b
  libgps19
  libkdecorations4
  libkephal4
  libkonq4
  libkonqsidebarplugin4a
  libkscreensaver5
  libksgrd4
  libksignalplotter4
  libkunitconversion4
  libkwineffects1a
  libmarblewidget4
  libntrack-qt4-1
  libntrack0
  libplasma-geolocation-interface4
  libplasmaclock4a
  libplasmagenericshell4
  libprocesscore4a
  libprocessui4a
  libqalculate5
  libqedje0a
  libqtruby4shared2
  libqzion0a
  libruby1.8
  libscim8c2a
  libsmokekdecore4-3
  libsmokekdeui4-3
  libsmokekfile3
  libsmokekhtml3
  libsmokekio3
  libsmokeknewstuff2-3
  libsmokeknewstuff3-3
  libsmokekparts3
  libsmokektexteditor3
  libsmokekutils3
  libsmokenepomuk3
  libsmokephonon3
  libsmokeplasma3
  libsmokeqtcore4-3
  libsmokeqtdbus4-3
  libsmokeqtgui4-3
  libsmokeqtnetwork4-3
  libsmokeqtopengl4-3
  libsmokeqtscript4-3
  libsmokeqtsql4-3
  libsmokeqtsvg4-3
  libsmokeqttest4-3
  libsmokeqtuitools4-3
  libsmokeqtwebkit4-3
  libsmokeqtxml4-3
  libsmokesolid3
  libsmokesoprano3
  libtaskmanager4a
  libtidy-0.99-0
  libweather-ion4a
  libxklavier16
  libxxf86misc1
  okteta
  oxygencursors
  plasma-dataengines-addons
  plasma-scriptengine-superkaramba
  plasma-widget-lancelot
  plasma-widgets-addons
  plasma-widgets-workspace
  polkit-kde-1
  ruby1.8
  systemsettings
  update-notifier-common
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Running apt-get autoremove made the results using apt-get and
aptitude a bit more similar, but there are still quite a lott of
differences.  I have no idea what packages should be installed after
the upgrade, but hope those that do can have a look.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Migrating Xen virtual machines using LVM to KVM using disk images</title>
                <link>http://people.skolelinux.org/pere/blog/Migrating_Xen_virtual_machines_using_LVM_to_KVM_using_disk_images.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Migrating_Xen_virtual_machines_using_LVM_to_KVM_using_disk_images.html</guid>
                <pubDate>Mon, 22 Nov 2010 11:20:00 +0100</pubDate>
                <description>&lt;p&gt;Most of the computers in use by the
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu/Skolelinux project&lt;/a&gt;
are virtual machines.  And they have been Xen machines running on a
fairly old IBM eserver xseries 345 machine, and we wanted to migrate
them to KVM on a newer Dell PowerEdge 2950 host machine.  This was a
bit harder that it could have been, because we set up the Xen virtual
machines to get the virtual partitions from LVM, which as far as I
know is not supported by KVM.  So to migrate, we had to convert
several LVM logical volumes to partitions on a virtual disk file.&lt;/p&gt;

&lt;p&gt;I found
&lt;a href=&quot;http://searchnetworking.techtarget.com.au/articles/35011-Six-steps-for-migrating-Xen-virtual-machines-to-KVM&quot;&gt;a
nice recipe&lt;/a&gt; to do this, and wrote the following script to do the
migration.  It uses qemu-img from the qemu package to make the disk
image, parted to partition it, losetup and kpartx to present the disk
image partions as devices, and dd to copy the data.  I NFS mounted the
new servers storage area on the old server to do the migration.&lt;/p&gt;

&lt;pre&gt;
#!/bin/sh

# Based on
# http://searchnetworking.techtarget.com.au/articles/35011-Six-steps-for-migrating-Xen-virtual-machines-to-KVM

set -e
set -x

if [ -z &quot;$1&quot; ] ; then
    echo &quot;Usage: $0 &amp;lt;hostname&amp;gt;&quot;
    exit 1
else
    host=&quot;$1&quot;
fi

if [ ! -e /dev/vg_data/$host-disk ] ; then
    echo &quot;error: unable to find LVM volume for $host&quot;
    exit 1
fi

# Partitions need to be a bit bigger than the LVM LVs.  not sure why.
disksize=$( lvs --units m | grep $host-disk | awk &#39;{sum = sum + $4} END { print int(sum * 1.05) }&#39;)
swapsize=$( lvs --units m | grep $host-swap | awk &#39;{sum = sum + $4} END { print int(sum * 1.05) }&#39;)
totalsize=$(( ( $disksize + $swapsize ) ))

img=$host.img
#dd if=/dev/zero of=$img bs=1M count=$(( $disksize + $swapsize ))
qemu-img create $img ${totalsize}MMaking room on the Debian Edu/Sqeeze DVD

parted $img mklabel msdos
parted $img mkpart primary linux-swap 0 $disksize
parted $img mkpart primary ext2 $disksize $totalsize
parted $img set 1 boot on

modprobe dm-mod
losetup /dev/loop0 $img
kpartx -a /dev/loop0

dd if=/dev/vg_data/$host-disk of=/dev/mapper/loop0p1 bs=1M
fsck.ext3 -f /dev/mapper/loop0p1 || true
mkswap /dev/mapper/loop0p2

kpartx -d /dev/loop0
losetup -d /dev/loop0
&lt;/pre&gt;

&lt;p&gt;The script is perhaps so simple that it is not copyrightable, but
if it is, it is licenced using GPL v2 or later at your discretion.&lt;/p&gt;

&lt;p&gt;After doing this, I booted a Debian CD in rescue mode in KVM with
the new disk image attached, installed grub-pc and linux-image-686 and
set up grub to boot from the disk image.  After this, the KVM machines
seem to work just fine.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Lenny-&gt;Squeeze upgrades, apt vs aptitude with the Gnome and KDE desktop</title>
                <link>http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades__apt_vs_aptitude_with_the_Gnome_and_KDE_desktop.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades__apt_vs_aptitude_with_the_Gnome_and_KDE_desktop.html</guid>
                <pubDate>Sat, 20 Nov 2010 22:50:00 +0100</pubDate>
                <description>&lt;p&gt;I&#39;m still running upgrade testing of the
&lt;a href=&quot;http://people.skolelinux.org/~pere/debian-upgrade-testing/&quot;&gt;Lenny
Gnome and KDE Desktop&lt;/a&gt;, but have not had time to spend on reporting the
status.  Here is a short update based on a test I ran 20101118.&lt;/p&gt;

&lt;p&gt;I still do not know what a correct migration should look like, so I
report any differences between apt and aptitude and hope someone else
can see if anything should be changed.&lt;/p&gt;

&lt;p&gt;This is for Gnome:&lt;/p&gt;

&lt;p&gt;Installed using apt-get, missing with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  apache2.2-bin aptdaemon at-spi baobab binfmt-support
  browser-plugin-gnash cheese-common cli-common cpp-4.3 cups-pk-helper
  dmz-cursor-theme empathy empathy-common finger
  freedesktop-sound-theme freeglut3 gconf-defaults-service gdm-themes
  gedit-plugins geoclue geoclue-hostip geoclue-localnet geoclue-manual
  geoclue-yahoo gnash gnash-common gnome gnome-backgrounds
  gnome-cards-data gnome-codec-install gnome-core
  gnome-desktop-environment gnome-disk-utility gnome-screenshot
  gnome-search-tool gnome-session-canberra gnome-spell
  gnome-system-log gnome-themes-extras gnome-themes-more
  gnome-user-share gs-common gstreamer0.10-fluendo-mp3
  gstreamer0.10-tools gtk2-engines gtk2-engines-pixbuf
  gtk2-engines-smooth hal-info hamster-applet libapache2-mod-dnssd
  libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap
  libart2.0-cil libatspi1.0-0 libboost-date-time1.42.0
  libboost-python1.42.0 libboost-thread1.42.0 libchamplain-0.4-0
  libchamplain-gtk-0.4-0 libcheese-gtk18 libclutter-gtk-0.10-0
  libcryptui0 libcupsys2 libdiscid0 libeel2-data libelf1 libepc-1.0-2
  libepc-common libepc-ui-1.0-2 libfreerdp-plugins-standard
  libfreerdp0 libgail-common libgconf2.0-cil libgdata-common libgdata7
  libgdl-1-common libgdu-gtk0 libgee2 libgeoclue0 libgexiv2-0 libgif4
  libglade2.0-cil libglib2.0-cil libgmime2.4-cil libgnome-vfs2.0-cil
  libgnome2.24-cil libgnomepanel2.24-cil libgnomeprint2.2-data
  libgnomeprintui2.2-common libgnomevfs2-bin libgpod-common libgpod4
  libgtk2.0-cil libgtkglext1 libgtksourceview-common
  libgtksourceview2.0-common libmono-addins-gui0.2-cil
  libmono-addins0.2-cil libmono-cairo2.0-cil libmono-corlib2.0-cil
  libmono-i18n-west2.0-cil libmono-posix2.0-cil
  libmono-security2.0-cil libmono-sharpzip2.84-cil
  libmono-system2.0-cil libmtp8 libmusicbrainz3-6
  libndesk-dbus-glib1.0-cil libndesk-dbus1.0-cil libopal3.6.8
  libpolkit-gtk-1-0 libpt-1.10.10-plugins-alsa
  libpt-1.10.10-plugins-v4l libpt2.6.7 libpython2.6 librpm1 librpmio1
  libsdl1.2debian libservlet2.4-java libsrtp0 libssh-4
  libtelepathy-farsight0 libtelepathy-glib0 libtidy-0.99-0
  libxalan2-java libxerces2-java media-player-info mesa-utils
  mono-2.0-gac mono-gac mono-runtime nautilus-sendto
  nautilus-sendto-empathy openoffice.org-writer2latex
  openssl-blacklist p7zip p7zip-full pkg-config python-4suite-xml
  python-aptdaemon python-aptdaemon-gtk python-axiom
  python-beautifulsoup python-bugbuddy python-clientform
  python-coherence python-configobj python-crypto python-cupshelpers
  python-cupsutils python-eggtrayicon python-elementtree
  python-epsilon python-evolution python-feedparser python-gdata
  python-gdbm python-gst0.10 python-gtkglext1 python-gtkmozembed
  python-gtksourceview2 python-httplib2 python-louie python-mako
  python-markupsafe python-mechanize python-nevow python-notify
  python-opengl python-openssl python-pam python-pkg-resources
  python-pyasn1 python-pysqlite2 python-rdflib python-serial
  python-tagpy python-twisted-bin python-twisted-conch
  python-twisted-core python-twisted-web python-utidylib python-webkit
  python-xdg python-zope.interface remmina remmina-plugin-data
  remmina-plugin-rdp remmina-plugin-vnc rhythmbox-plugin-cdrecorder
  rhythmbox-plugins rpm-common rpm2cpio seahorse-plugins shotwell
  software-center svgalibg1 system-config-printer-udev
  telepathy-gabble telepathy-mission-control-5 telepathy-salut tomboy
  totem totem-coherence totem-mozilla totem-plugins
  transmission-common xdg-user-dirs xdg-user-dirs-gtk xserver-xephyr
  zip
&lt;/p&gt;&lt;/blockquote&gt;

Installed using apt-get, removed with aptitude

&lt;blockquote&gt;&lt;p&gt;
  arj bluez-utils cheese dhcdbd djvulibre-desktop ekiga eog
  epiphany-extensions epiphany-gecko evolution-exchange
  fast-user-switch-applet file-roller gcalctool gconf-editor gdm gedit
  gedit-common gnome-app-install gnome-games gnome-games-data
  gnome-nettool gnome-system-tools gnome-themes gnome-utils
  gnome-vfs-obexftp gnome-volume-manager gnuchess gucharmap
  guile-1.8-libs hal libavahi-compat-libdnssd1 libavahi-core5
  libavahi-ui0 libbind9-50 libbluetooth2 libcamel1.2-11 libcdio7
  libcucul0 libcurl3 libdirectfb-1.0-0 libdmx1 libdvdread3
  libedata-cal1.2-6 libedataserver1.2-9 libeel2-2.20 libepc-1.0-1
  libepc-ui-1.0-1 libexchange-storage1.2-3 libfaad0 libgadu3
  libgalago3 libgd2-noxpm libgda3-3 libgda3-common libggz2 libggzcore9
  libggzmod4 libgksu1.2-0 libgksuui1.0-1 libgmyth0 libgnome-desktop-2
  libgnome-pilot2 libgnomecups1.0-1 libgnomeprint2.2-0
  libgnomeprintui2.2-0 libgpod3 libgraphviz4 libgtk-vnc-1.0-0
  libgtkhtml2-0 libgtksourceview1.0-0 libgtksourceview2.0-0
  libgucharmap6 libhesiod0 libicu38 libisccc50 libisccfg50 libiw29
  libjaxp1.3-java-gcj libkpathsea4 liblircclient0 libltdl3 liblwres50
  libmagick++10 libmagick10 libmalaga7 libmozjs1d libmpfr1ldbl libmtp7
  libmysqlclient15off libnautilus-burn4 libneon27 libnm-glib0
  libnm-util0 libopal-2.2 libosp5 libparted1.8-10 libpisock9
  libpisync1 libpoppler-glib3 libpoppler3 libpt-1.10.10 libraw1394-8
  libsdl1.2debian-alsa libsensors3 libsexy2 libsmbios2 libsoup2.2-8
  libspeexdsp1 libssh2-1 libsuitesparse-3.1.0 libsvga1
  libswfdec-0.6-90 libtalloc1 libtotem-plparser10 libtrackerclient0
  libvoikko1 libxalan2-java-gcj libxerces2-java-gcj libxklavier12
  libxtrap6 libxxf86misc1 libzephyr3 mysql-common rhythmbox seahorse
  sound-juicer swfdec-gnome system-config-printer totem-common
  totem-gstreamer transmission-gtk vinagre vino w3c-dtd-xhtml wodim
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, missing with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  gstreamer0.10-gnomevfs
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, removed with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
[nothing]
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;This is for KDE:&lt;/p&gt;

&lt;p&gt;Installed using apt-get, missing with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  autopoint bomber bovo cantor cantor-backend-kalgebra cpp-4.3 dcoprss
  edict espeak espeak-data eyesapplet fifteenapplet finger gettext
  ghostscript-x git gnome-audio gnugo granatier gs-common
  gstreamer0.10-pulseaudio indi kaddressbook-plugins kalgebra
  kalzium-data kanjidic kapman kate-plugins kblocks kbreakout kbstate
  kde-icons-mono kdeaccessibility kdeaddons-kfile-plugins
  kdeadmin-kfile-plugins kdeartwork-misc kdeartwork-theme-window
  kdeedu kdeedu-data kdeedu-kvtml-data kdegames kdegames-card-data
  kdegames-mahjongg-data kdegraphics-kfile-plugins kdelirc
  kdemultimedia-kfile-plugins kdenetwork-kfile-plugins
  kdepim-kfile-plugins kdepim-kio-plugins kdessh kdetoys kdewebdev
  kdiamond kdnssd kfilereplace kfourinline kgeography-data kigo
  killbots kiriki klettres-data kmoon kmrml knewsticker-scripts
  kollision kpf krosspython ksirk ksmserver ksquares kstars-data
  ksudoku kubrick kweather libasound2-plugins libboost-python1.42.0
  libcfitsio3 libconvert-binhex-perl libcrypt-ssleay-perl libdb4.6++
  libdjvulibre-text libdotconf1.0 liberror-perl libespeak1
  libfinance-quote-perl libgail-common libgsl0ldbl libhtml-parser-perl
  libhtml-tableextract-perl libhtml-tagset-perl libhtml-tree-perl
  libio-stringy-perl libkdeedu4 libkdegames5 libkiten4 libkpathsea5
  libkrossui4 libmailtools-perl libmime-tools-perl
  libnews-nntpclient-perl libopenbabel3 libportaudio2 libpulse-browse0
  libservlet2.4-java libspeechd2 libtiff-tools libtimedate-perl
  libunistring0 liburi-perl libwww-perl libxalan2-java libxerces2-java
  lirc luatex marble networkstatus noatun-plugins
  openoffice.org-writer2latex palapeli palapeli-data parley
  parley-data poster psutils pulseaudio pulseaudio-esound-compat
  pulseaudio-module-x11 pulseaudio-utils quanta-data rocs rsync
  speech-dispatcher step svgalibg1 texlive-binaries texlive-luatex
  ttf-sazanami-gothic
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using apt-get, removed with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  amor artsbuilder atlantik atlantikdesigner blinken bluez-utils cvs
  dhcdbd djvulibre-desktop imlib-base imlib11 kalzium kanagram kandy
  kasteroids katomic kbackgammon kbattleship kblackbox kbounce kbruch
  kcron kdat kdemultimedia-kappfinder-data kdeprint kdict kdvi kedit
  keduca kenolaba kfax kfaxview kfouleggs kgeography kghostview
  kgoldrunner khangman khexedit kiconedit kig kimagemapeditor
  kitchensync kiten kjumpingcube klatin klettres klickety klines
  klinkstatus kmag kmahjongg kmailcvt kmenuedit kmid kmilo kmines
  kmousetool kmouth kmplot knetwalk kodo kolf kommander konquest kooka
  kpager kpat kpdf kpercentage kpilot kpoker kpovmodeler krec
  kregexpeditor kreversi ksame ksayit kshisen ksig ksim ksirc ksirtet
  ksmiletris ksnake ksokoban kspaceduel kstars ksvg ksysv kteatime
  ktip ktnef ktouch ktron kttsd ktuberling kturtle ktux kuickshow
  kverbos kview kviewshell kvoctrain kwifimanager kwin kwin4 kwordquiz
  kworldclock kxsldbg libakode2 libarts1-akode libarts1-audiofile
  libarts1-mpeglib libarts1-xine libavahi-compat-libdnssd1
  libavahi-core5 libavc1394-0 libbind9-50 libbluetooth2
  libboost-python1.34.1 libcucul0 libcurl3 libcvsservice0
  libdirectfb-1.0-0 libdjvulibre21 libdvdread3 libfaad0 libfreebob0
  libgd2-noxpm libgraphviz4 libgsmme1c2a libgtkhtml2-0 libicu38
  libiec61883-0 libindex0 libisccc50 libisccfg50 libiw29
  libjaxp1.3-java-gcj libk3b3 libkcal2b libkcddb1 libkdeedu3
  libkdegames1 libkdepim1a libkgantt0 libkleopatra1 libkmime2
  libkpathsea4 libkpimexchange1 libkpimidentities1 libkscan1
  libksieve0 libktnef1 liblockdev1 libltdl3 liblwres50 libmagick10
  libmimelib1c2a libmodplug0c2 libmozjs1d libmpcdec3 libmpfr1ldbl
  libneon27 libnm-util0 libopensync0 libpisock9 libpoppler-glib3
  libpoppler-qt2 libpoppler3 libraw1394-8 librss1 libsensors3
  libsmbios2 libssh2-1 libsuitesparse-3.1.0 libswfdec-0.6-90
  libtalloc1 libxalan2-java-gcj libxerces2-java-gcj libxtrap6 lskat
  mpeglib network-manager-kde noatun pmount tex-common texlive-base
  texlive-common texlive-doc-base texlive-fonts-recommended tidy
  ttf-dustin ttf-kochi-gothic ttf-sjfonts
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, missing with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  dolphin kde-core kde-plasma-desktop kde-standard kde-window-manager
  kdeartwork kdebase kdebase-apps kdebase-workspace
  kdebase-workspace-bin kdebase-workspace-data kdeutils kscreensaver
  kscreensaver-xsavers libgle3 libkonq5 libkonq5-templates libnetpbm10
  netpbm plasma-widget-folderview plasma-widget-networkmanagement
  xscreensaver-data-extra xscreensaver-gl xscreensaver-gl-extra
  xscreensaver-screensaver-bsod
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, removed with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  kdebase-bin konq-plugins konqueror
&lt;/p&gt;&lt;/blockquote&gt;
</description>
        </item>
        
        <item>
                <title>Gnash buildbot slave and Debian kfreebsd</title>
                <link>http://people.skolelinux.org/pere/blog/Gnash_buildbot_slave_and_Debian_kfreebsd.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Gnash_buildbot_slave_and_Debian_kfreebsd.html</guid>
                <pubDate>Sat, 20 Nov 2010 07:20:00 +0100</pubDate>
                <description>&lt;p&gt;Answering
&lt;a href=&quot;http://www.listware.net/201011/gnash-dev/67431-gnash-dev-buildbot-looking-for-slaves.html&quot;&gt;the
call from the Gnash project&lt;/a&gt; for
&lt;a href=&quot;http://www.gnashdev.org:8010&quot;&gt;buildbot&lt;/a&gt; slaves to test the
current source, I have set up a virtual KVM machine on the Debian
Edu/Skolelinux virtualization host to test the git source on
Debian/Squeeze.  I hope this can help the developers in getting new
releases out more often.&lt;/p&gt;

&lt;p&gt;As the developers want less main-stream build platforms tested to,
I have considered setting up a &lt;a
href=&quot;http://www.debian.org/ports/kfreebsd-gnu/&quot;&gt;Debian/kfreebsd&lt;/a&gt;
machine as well.  I have also considered using the kfreebsd
architecture in Debian as a file server in NUUG to get access to the 5
TB zfs volume we currently use to store DV video.  Because of this, I
finally got around to do a test installation of Debian/Squeeze with
kfreebsd.  Installation went fairly smooth, thought I noticed some
visual glitches in the cdebconf dialogs (black cursor left on the
screen at random locations).  Have not gotten very far with the
testing.  Noticed cfdisk did not work, but fdisk did so it was not a
fatal problem.  Have to spend some more time on it to see if it is
useful as a file server for NUUG.  Will try to find time to set up a
gnash buildbot slave on the Debian Edu/Skolelinux this weekend.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian in 3D</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_in_3D.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_in_3D.html</guid>
                <pubDate>Tue, 9 Nov 2010 16:10:00 +0100</pubDate>
                <description>&lt;p&gt;&lt;img src=&quot;http://thingiverse-production.s3.amazonaws.com/renders/23/e0/c4/f9/2b/debswagtdose_preview_medium.jpg&quot;&gt;&lt;/p&gt;

&lt;p&gt;3D printing is just great.  I just came across this Debian logo in
3D linked in from
&lt;a href=&quot;http://blog.thingiverse.com/2010/11/09/participatory-branding/&quot;&gt;the
thingiverse blog&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Making room on the Debian Edu/Sqeeze DVD</title>
                <link>http://people.skolelinux.org/pere/blog/Making_room_on_the_Debian_Edu_Sqeeze_DVD.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Making_room_on_the_Debian_Edu_Sqeeze_DVD.html</guid>
                <pubDate>Sun, 7 Nov 2010 11:45:00 +0100</pubDate>
                <description>&lt;p&gt;Prioritising packages for the Debian Edu /
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux&lt;/a&gt; DVD, which is
supposed provide a school with all the services and user applications
needed on the pupils computer network has always been hard.  Even
schools without Internet connections should be able to get Debian Edu
working using this DVD.&lt;/p&gt;

&lt;p&gt;The job became a lot harder when apt and aptitude started
installing recommended packages by default.  We want the same set of
packages to be installed when using the DVD and the netinst CD, and
that means all recommended packages need to be on the DVD.  I created
a patch for debian-cd in &lt;a href=&quot;http://bugs.debian.org/601203&quot;&gt;BTS
report #601203&lt;/a&gt; to do this, and since this change was applied to
the Debian Edu DVD build, we have been seriously short on space.&lt;/p&gt;

&lt;p&gt;A few days ago we decided to drop blender, wxmaxima and kicad from
the default installation to save space on the DVD, believing that
those needing these applications are few and can get them from the
Debian archive.&lt;/p&gt;

&lt;p&gt;Yesterday, I had a look what source packages to see which packages
were using most space.  A few large packages are well know;
openoffice.org, openclipart and fluid-soundfont.  But I also
discovered that lilypond used 106 MiB and fglrx-driver used 53 MiB.
The lilypond package is pulled in as a dependency for rosegarden, and
when looking a bit closer I discovered that 99 MiB of the 106 MiB were
the documentation package, which is recommended by the binary package.
I decided to drop this documentation package from our DVD, as most of
our users will use the GUI front-ends and do not need the lilypond
documentation.  Similarly, I dropped the non-free fglrx-driver package
which might be installed by d-i when its hardware is detected, as the
free X driver should work.&lt;/p&gt;

&lt;p&gt;With this change, we finally got space for the LXDE and Gnome
desktop packages as well as the language specific packages making the
DVD more useful again.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Software updates 2010-10-24</title>
                <link>http://people.skolelinux.org/pere/blog/Software_updates_2010_10_24.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Software_updates_2010_10_24.html</guid>
                <pubDate>Sun, 24 Oct 2010 22:45:00 +0200</pubDate>
                <description>&lt;p&gt;Some updates.&lt;/p&gt;

&lt;p&gt;My &lt;a href=&quot;http://pledgebank.com/gnash-avm2&quot;&gt;gnash pledge&lt;/a&gt; to
raise money for the project is going well.  The lower limit of 10
signers was reached in 24 hours, and so far 13 people have signed it.
More signers and more funding is most welcome, and I am really curious
how far we can get before the time limit of December 24 is reached.
:)&lt;/p&gt;

&lt;p&gt;On the #gnash IRC channel on irc.freenode.net, I was just tipped
about what appear to be a great code coverage tool capable of
generating code coverage stats without any changes to the source code.
It is called
&lt;a href=&quot;http://simonkagstrom.github.com/kcov/index.html&quot;&gt;kcov&lt;/a&gt;,
and can be used using &lt;tt&gt;kcov &amp;lt;directory&amp;gt; &amp;lt;binary&amp;gt;&lt;/tt&gt;.
It is missing in Debian, but the git source built just fine in Squeeze
after I installed libelf-dev, libdwarf-dev, pkg-config and
libglib2.0-dev.  Failed to build in Lenny, but suspect that is
solvable.  I hope kcov make it into Debian soon.&lt;/p&gt;

&lt;p&gt;Finally found time to wrap up the release notes for &lt;a
href=&quot;http://lists.debian.org/debian-edu-announce/2010/10/msg00002.html&quot;&gt;a
new alpha release of Debian Edu&lt;/a&gt;, and just published the second
alpha test release of the Squeeze based Debian Edu /
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux&lt;/a&gt;
release.  Give it a try if you need a complete linux solution for your
school, including central infrastructure server, workstations, thin
client servers and diskless workstations.  A nice touch added
yesterday is RDP support on the thin client servers, for windows
clients to get a Linux desktop on request.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Pledge for funding to the Gnash project to get AVM2 support</title>
                <link>http://people.skolelinux.org/pere/blog/Pledge_for_funding_to_the_Gnash_project_to_get_AVM2_support.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Pledge_for_funding_to_the_Gnash_project_to_get_AVM2_support.html</guid>
                <pubDate>Tue, 19 Oct 2010 14:45:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.getgnash.org/&quot;&gt;The Gnash project&lt;/a&gt; is the
most promising solution for a Free Software Flash implementation. It
has done great so far, but there is still far to go, and recently its
funding has dried up.  I believe AVM2 support in Gnash is vital to the
continued progress of the project, as more and more sites show up with
AVM2 flash files.&lt;/p&gt;

&lt;p&gt;To try to get funding for developing such support, I have started
&lt;a href=&quot;http://www.pledgebank.com/gnash-avm2&quot;&gt;a pledge&lt;/a&gt; with the
following text:&lt;/P&gt;

&lt;p&gt;&lt;blockquote&gt;

  &lt;p&gt;&quot;I will pay 100$ to the Gnash project to develop AVM2 support but
  only if 10 other people will do the same.&quot;&lt;/p&gt;

  &lt;p&gt;- Petter Reinholdtsen, free software developer&lt;/p&gt;

  &lt;p&gt;Deadline to sign up by: 24th December 2010&lt;/p&gt;

  &lt;p&gt;The Gnash project need to get support for the new Flash file
  format AVM2 to work with a lot of sites using Flash on the
  web. Gnash already work with a lot of Flash sites using the old AVM1
  format, but more and more sites are using the AVM2 format these
  days. The project web page is available from
  http://www.getgnash.org/ . Gnash is a free software implementation
  of Adobe Flash, allowing those of us that do not accept the terms of
  the Adobe Flash license to get access to Flash sites.&lt;/p&gt;

  &lt;p&gt;The project need funding to get developers to put aside enough
  time to develop the AVM2 support, and this pledge is my way to try
  to get this to happen.&lt;/p&gt;

  &lt;p&gt;The project accept donations via the OpenMediaNow foundation,
  &lt;a href=&quot;http://www.openmedianow.org/?q=node/32&quot;&gt;http://www.openmedianow.org/?q=node/32&lt;/a&gt; .&lt;/p&gt;

&lt;/blockquote&gt;&lt;/p&gt;

&lt;p&gt;I hope you will support this effort too.  I hope more than 10
people will participate to make this happen.  The more money the
project gets, the more features it can develop using these funds.
:)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First version of a Perl library to control the Spykee robot</title>
                <link>http://people.skolelinux.org/pere/blog/First_version_of_a_Perl_library_to_control_the_Spykee_robot.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_version_of_a_Perl_library_to_control_the_Spykee_robot.html</guid>
                <pubDate>Sat, 9 Oct 2010 14:00:00 +0200</pubDate>
                <description>&lt;p&gt;This summer I got the chance to buy cheap Spykee robots, and since
then I have worked on getting Linux software in place to control them.
The firmware for the robot is available from the producer, and using
that source it was trivial to figure out the protocol specification.
I&#39;ve started on a perl library to control it, and made some demo
programs using this perl library to allow one to control the
robots.&lt;/p&gt;

&lt;p&gt;The library is quite functional already, and capable of controlling
the driving, fetching video, uploading MP3s and play them.  There are
a few less important features too.&lt;/p&gt;

&lt;p&gt;Since a few weeks ago, I ran out of time to spend on this project,
but I never got around to releasing the current source.  I decided
today that it was time to do something about it, and uploaded the
source to my Debian package store at people.skolelinux.org.&lt;/p&gt;

&lt;p&gt;Because it was simpler for me, I made a Debian package and
published the source and deb.  If you got a spykee robot, grab the
source or binary package:&lt;/p&gt;

&lt;p&gt;&lt;ul&gt;
&lt;li&gt;&lt;a href=&quot;http://people.skolelinux.org/~pere/debian/packages/lenny/libspykee-perl_0.0.20101009-1.tar.gz&quot;&gt;libspykee-perl_0.0.20101009-1.tar.gz&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://people.skolelinux.org/~pere/debian/packages/lenny/libspykee-perl_0.0.20101009-1.dsc&quot;&gt;libspykee-perl_0.0.20101009-1.dsc&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://people.skolelinux.org/~pere/debian/packages/lenny/libspykee-perl_0.0.20101009-1_all.deb&quot;&gt;libspykee-perl_0.0.20101009-1_all.deb&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;

&lt;p&gt;If you are interested in helping out with developing this library,
please let me know.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Links for 2010-10-03</title>
                <link>http://people.skolelinux.org/pere/blog/Links_for_2010_10_03.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Links_for_2010_10_03.html</guid>
                <pubDate>Sun, 3 Oct 2010 22:30:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;ul&gt;

&lt;li&gt;&lt;a href=&quot;http://arstechnica.com/business/news/2010/09/there-is-no-plan-b-why-the-ipv4-to-ipv6-transition-will-be-ugly.ars&quot;&gt;There
is no Plan B: why the IPv4-to-IPv6 transition will be ugly&lt;/a&gt;&lt;/li&gt;

&lt;li&gt;Scanner looking under clothes
&lt;a href=&quot;http://www.dagbladet.no/2010/10/03/nyheter/utenriks/reise/overvakingskamera/flyplasser/13667192/&quot;&gt;has
already been misused at Heathrow&lt;/a&gt;.&lt;/li&gt;

&lt;li&gt;&lt;a href=&quot;http://wiki.softwarelivre.org/Landell&quot;&gt;Landell
Webcasting&lt;/a&gt; - interesting alternative for
&lt;ahref=&quot;http://dvswitch.alioth.debian.org/wiki/&quot;&gt;DVSwitch&lt;/a&gt; with
simple setup.

&lt;/ul&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Terms of use for video produced by a Canon IXUS 130 digital camera</title>
                <link>http://people.skolelinux.org/pere/blog/Terms_of_use_for_video_produced_by_a_Canon_IXUS_130_digital_camera.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Terms_of_use_for_video_produced_by_a_Canon_IXUS_130_digital_camera.html</guid>
                <pubDate>Thu, 9 Sep 2010 23:55:00 +0200</pubDate>
                <description>&lt;p&gt;A few days ago I had the mixed pleasure of bying a new digital
camera, a Canon IXUS 130.  It was instructive and very disturbing to
be able to verify that also this camera producer have the nerve to
specify how I can or can not use the videos produced with the camera.
Even thought I was aware of the issue, the options with new cameras
are limited and I ended up bying the camera anyway.  What is the
problem, you might ask?  It is software patents, MPEG-4, H.264 and the
MPEG-LA that is the problem, and our right to record our experiences
without asking for permissions that is at risk.

&lt;p&gt;On page 27 of the Danish instruction manual, this section is
written:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;This product is licensed under AT&amp;T patents for the MPEG-4 standard
and may be used for encoding MPEG-4 compliant video and/or decoding
MPEG-4 compliant video that was encoded only (1) for a personal and
non-commercial purpose or (2) by a video provider licensed under the
AT&amp;T patents to provide MPEG-4 compliant video.&lt;/p&gt;

&lt;p&gt;No license is granted or implied for any other use for MPEG-4
standard.&lt;/p&gt;
&lt;/blockquote&gt;

&lt;p&gt;In short, the camera producer have chosen to use technology
(MPEG-4/H.264) that is only provided if I used it for personal and
non-commercial purposes, or ask for permission from the organisations
holding the knowledge monopoly (patent) for technology used.&lt;/p&gt;

&lt;p&gt;This issue has been brewing for a while, and I recommend you to
read
&quot;&lt;a href=&quot;http://www.osnews.com/story/23236/Why_Our_Civilization_s_Video_Art_and_Culture_is_Threatened_by_the_MPEG-LA&quot;&gt;Why
Our Civilization&#39;s Video Art and Culture is Threatened by the
MPEG-LA&lt;/a&gt;&quot; by Eugenia Loli-Queru and
&quot;&lt;a href=&quot;http://webmink.com/2010/09/03/h-264-and-foss/&quot;&gt;H.264 Is Not
The Sort Of Free That Matters&lt;/a&gt;&quot; by Simon Phipps to learn more about
the issue.  The solution is to support the
&lt;a href=&quot;http://www.digistan.org/open-standard:definition&quot;&gt;free and
open standards&lt;/a&gt; for video, like &lt;a href=&quot;http://www.theora.org/&quot;&gt;Ogg
Theora&lt;/a&gt;, and avoid MPEG-4 and H.264 if you can.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Some notes on Flash in Debian and Debian Edu</title>
                <link>http://people.skolelinux.org/pere/blog/Some_notes_on_Flash_in_Debian_and_Debian_Edu.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Some_notes_on_Flash_in_Debian_and_Debian_Edu.html</guid>
                <pubDate>Sat, 4 Sep 2010 10:10:00 +0200</pubDate>
                <description>&lt;p&gt;In the &lt;a href=&quot;http://popcon.debian.org/unknown/by_vote&quot;&gt;Debian
popularity-contest numbers&lt;/a&gt;, the adobe-flashplugin package the
second most popular used package that is missing in Debian.  The sixth
most popular is flashplayer-mozilla.  This is a clear indication that
working flash is important for Debian users.  Around 10 percent of the
users submitting data to popcon.debian.org have this package
installed.&lt;/p&gt;

&lt;p&gt;In the report written by Lars Risan in August 2008
(«&lt;a href=&quot;http://wiki.skolelinux.no/Dokumentasjon/Rapporter?action=AttachFile&amp;do=view&amp;target=Skolelinux_i_bruk_rapport_1.0.pdf&quot;&gt;Skolelinux
i bruk – Rapport for Hurum kommune, Universitetet i Agder og
stiftelsen SLX Debian Labs&lt;/a&gt;»), one of the most important problems
schools experienced with &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian
Edu/Skolelinux&lt;/a&gt; was the lack of working Flash.  A lot of educational
web sites require Flash to work, and lacking working Flash support in
the web browser and the problems with installing it was perceived as a
good reason to stay with Windows.&lt;/p&gt;

&lt;p&gt;I once saw a funny and sad comment in a web forum, where Linux was
said to be the retarded cousin that did not really understand
everything you told him but could work fairly well.  This was a
comment regarding the problems Linux have with proprietary formats and
non-standard web pages, and is sad because it exposes a fairly common
understanding of whose fault it is if web pages that only work in for
example Internet Explorer 6 fail to work on Firefox, and funny because
it explain very well how annoying it is for users when Linux
distributions do not work with the documents they receive or the web
pages they want to visit.&lt;/p&gt;

&lt;p&gt;This is part of the reason why I believe it is important for Debian
and Debian Edu to have a well working Flash implementation in the
distribution, to get at least popular sites as Youtube and Google
Video to working out of the box.  For Squeeze, Debian have the chance
to include the latest version of Gnash that will make this happen, as
the new release 0.8.8 was published a few weeks ago and is resting in
unstable.  The new version work with more sites that version 0.8.7.
The Gnash maintainers have asked for a freeze exception, but the
release team have not had time to reply to it yet.  I hope they agree
with me that Flash is important for the Debian desktop users, and thus
accept the new package into Squeeze.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>My first perl GUI application - controlling a Spykee robot</title>
                <link>http://people.skolelinux.org/pere/blog/My_first_perl_GUI_application___controlling_a_Spykee_robot.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/My_first_perl_GUI_application___controlling_a_Spykee_robot.html</guid>
                <pubDate>Wed, 1 Sep 2010 21:00:00 +0200</pubDate>
                <description>&lt;p&gt;This evening I made my first Perl GUI application.  The last few
days I have worked on a Perl module for controlling my recently
aquired Spykee robots, and the module is now getting complete enought
that it is possible to use it to control the robot driving at least.
It was now time to figure out how to use it to create some GUI to
allow me to drive the robot around.  I picked PerlQt as I have had
positive experiences with the Qt API before, and spent a few minutes
browsing the web for examples.  Using Qt Designer seemed like a short
cut, so I ended up writing the perl GUI using Qt Designer and
compiling it into a perl program using the puic program from
libqt-perl.  Nothing fancy yet, but it got buttons to connect and
drive around.&lt;/p&gt;

&lt;p&gt;The perl module I have written provide a object oriented API for
controlling the robot.  Here is an small example on how to use it:&lt;/p&gt;

&lt;p&gt;&lt;pre&gt;
use Spykee;
Spykee::discover(sub {$robot{$_[0]} = $_[1]});
my $host = (keys %robot)[0];
my $spykee = Spykee-&gt;new();
$spykee-&gt;contact($host, &quot;admin&quot;, &quot;admin&quot;);
$spykee-&gt;left();
sleep 2;
$spykee-&gt;right();
sleep 2;
$spykee-&gt;forward();
sleep 2;
$spykee-&gt;back();
sleep 2;
$spykee-&gt;stop();
&lt;/pre&gt;&lt;/p&gt;

&lt;p&gt;Thanks to the release of the source of the robot firmware, I could
peek into the implementation at the other end to figure out how to
implement the protocol used by the robot.  I&#39;ve implemented several of
the commands the robot understand, but is still missing the camera
support to make it possible to control the robot from remote.  First I
want to implement support for uploading new firmware and configuring
the wireless network, to make it possible to bootstrap a Spykee robot
without the producers Windows and MacOSX software (I only have Linux,
so I had to ask a friend to come over to get the robot testing
going. :).&lt;/p&gt;

&lt;p&gt;Will release the source to the public soon, but need to figure out
where to make it available first.  I will add a link to 
&lt;a href=&quot;http://wiki.nuug.no/grupper/robot/&quot;&gt;the NUUG wiki&lt;/a&gt; for
those that want to check back later to find it.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Broken hard link handling with sshfs</title>
                <link>http://people.skolelinux.org/pere/blog/Broken_hard_link_handling_with_sshfs.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Broken_hard_link_handling_with_sshfs.html</guid>
                <pubDate>Mon, 30 Aug 2010 19:30:00 +0200</pubDate>
                <description>&lt;p&gt;Just got an email from Tobias Gruetzmacher as a followup on my
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Broken_umask_handling_with_sshfs.html&quot;&gt;previous
post about sshfs&lt;/a&gt;.  He reported another problem with sshfs.  It
fail to handle hard links properly.  A simple way to spot this is to
look at the . and .. entries in the directory tree.  These should have
a link count &gt;1, but on sshfs the count is 1.  I just tested to see
what happen when trying to hardlink, and this fail as well:&lt;/p&gt;

&lt;pre&gt;
% ln foo bar
ln: creating hard link `bar&#39; =&gt; `foo&#39;: Function not implemented
%
&lt;/pre&gt;

&lt;p&gt;I have not yet found time to implement a test for this in my file
system test code, but believe having working hard links is useful to
avoid surprised unix programs.  Not as useful as working file locking
and symlinks, which are required to get a working desktop, but useful
nevertheless. :)&lt;/p&gt;

&lt;p&gt;The latest version of the file system test code is available via
git from
&lt;a href=&quot;http://github.com/gebi/fs-test&quot;&gt;http://github.com/gebi/fs-test&lt;/a&gt;&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Broken umask handling with sshfs</title>
                <link>http://people.skolelinux.org/pere/blog/Broken_umask_handling_with_sshfs.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Broken_umask_handling_with_sshfs.html</guid>
                <pubDate>Thu, 26 Aug 2010 13:30:00 +0200</pubDate>
                <description>&lt;p&gt;My file system sematics program
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html&quot;&gt;presented
a few days ago&lt;/a&gt; is very useful to verify that a file system can
work as a unix home directory,and today I had to extend it a bit.  I&#39;m
looking into alternatives for home directory access here at the
University of Oslo, and one of the options is sshfs.  My friend
Finn-Arne mentioned a while back that they had used sshfs with Debian
Edu, but stopped because of problems.  I asked today what the problems
where, and he mentioned that sshfs failed to handle umask properly.
Trying to detect the problem I wrote this addition to my fs testing
script:&lt;/p&gt;

&lt;pre&gt;
mode_t touch_get_mode(const char *name, mode_t mode) {
  mode_t retval = 0;
  int fd = open(name, O_RDWR|O_CREAT|O_LARGEFILE, mode);
  if (-1 != fd) {
    unlink(name);
    struct stat statbuf;
    if (-1 != fstat(fd, &amp;statbuf)) {
      retval = statbuf.st_mode &amp; 0x1ff;
    }
    close(fd);
  }
  return retval;
}

/* Try to detect problem discovered using sshfs */
int test_umask(void) {
  printf(&quot;info: testing umask effect on file creation\n&quot;);

  mode_t orig_umask = umask(000);
  mode_t newmode;
  if (0666 != (newmode = touch_get_mode(&quot;foobar&quot;, 0666))) {
    printf(&quot;  error: Wrong file mode %o when creating using mode 666 and umask 000\n&quot;,
           newmode);
  }
  umask(007);
  if (0660 != (newmode = touch_get_mode(&quot;foobar&quot;, 0666))) {
    printf(&quot;  error: Wrong file mode %o when creating using mode 666 and umask 007\n&quot;,
           newmode);
  }

  umask (orig_umask);
  return 0;
}

int main(int argc, char **argv) {
  [...]
  test_umask();
  return 0;
}
&lt;/pre&gt;

&lt;p&gt;Sure enough.  On NFS to a netapp, I get this result:&lt;/p&gt;

&lt;pre&gt;
Testing POSIX/Unix sematics on file system
info: testing symlink creation
info: testing subdirectory creation
info: testing fcntl locking
  Read-locking 1 byte from 1073741824
  Read-locking 510 byte from 1073741826
  Unlocking 1 byte from 1073741824
  Write-locking 1 byte from 1073741824
  Write-locking 510 byte from 1073741826
  Unlocking 2 byte from 1073741824
info: testing umask effect on file creation
&lt;/pre&gt;

&lt;p&gt;When mounting the same directory using sshfs, I get this
result:&lt;/p&gt;

&lt;pre&gt;
Testing POSIX/Unix sematics on file system
info: testing symlink creation
info: testing subdirectory creation
info: testing fcntl locking
  Read-locking 1 byte from 1073741824
  Read-locking 510 byte from 1073741826
  Unlocking 1 byte from 1073741824
  Write-locking 1 byte from 1073741824
  Write-locking 510 byte from 1073741826
  Unlocking 2 byte from 1073741824
info: testing umask effect on file creation
  error: Wrong file mode 644 when creating using mode 666 and umask 000
  error: Wrong file mode 640 when creating using mode 666 and umask 007
&lt;/pre&gt;

&lt;p&gt;So, I can conclude that sshfs is better than smb to a Netapp or a
Windows server, but not good enough to be used as a home
directory.&lt;/p&gt;

&lt;p&gt;Update 2010-08-26: Reported the issue in
&lt;a href=&quot;http://bugs.debian.org/594498&quot;&gt;BTS report #594498&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Update 2010-08-27: Michael Gebetsroither report that he found the
script so useful that he created a GIT repository and stored it in
&lt;a href=&quot;http://github.com/gebi/fs-test&quot;&gt;http://github.com/gebi/fs-test&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Rob Weir: How to Crush Dissent</title>
                <link>http://people.skolelinux.org/pere/blog/Rob_Weir__How_to_Crush_Dissent.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Rob_Weir__How_to_Crush_Dissent.html</guid>
                <pubDate>Sun, 15 Aug 2010 22:20:00 +0200</pubDate>
                <description>&lt;p&gt;I found the notes from Rob Weir on
&lt;a href=&quot;http://feedproxy.google.com/~r/robweir/antic-atom/~3/VGb23-kta8c/how-to-crush-dissent.html&quot;&gt;how
to crush dissent&lt;/a&gt; matching my own thoughts on the matter quite
well.  Highly recommended for those wondering which road our society
should go down.  In my view we have been heading the wrong way for a
long time.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>No hardcoded config on Debian Edu clients</title>
                <link>http://people.skolelinux.org/pere/blog/No_hardcoded_config_on_Debian_Edu_clients.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/No_hardcoded_config_on_Debian_Edu_clients.html</guid>
                <pubDate>Mon, 9 Aug 2010 20:15:00 +0200</pubDate>
                <description>&lt;p&gt;As reported earlier, the last few days I have looked at how Debian
Edu clients are configured, and tried to get rid of all hardcoded
configuration settings on the clients.  I believe the work to be
mostly done, and the clients seem to work just fine with dynamically
generated configuration.&lt;/p&gt;

&lt;p&gt;What is the point, you might ask?  The point is to allow a Debian
Edu desktop to integrate into an existing network infrastructure
without any manual configuration.&lt;/p&gt;

&lt;p&gt;This is what happens when installing a Debian Edu client here at
the University of Oslo using PXE.  With the PXE installation, I am
asked for language (Norwegian Bokmål), locality (Norway) and keyboard
layout (no-latin1), Debian Edu profile (Roaming Workstation), if I
accept to reformat the hard drive (yes), if I want to submit info to
popcon.debian.org (no) and root password (secret).  After answering
these questions, the installer goes ahead and does its thing, and
after around 50 minutes it is done.  I press enter to finish the
installation, and the machine reboots into KDE.  When the machine is
ready and kdm asks for login information, I enter my university
username and password, am told by kdm that a local home directory has
been created and that I must log in again, and finally log in with the
same username and password to the KDE 4.4 desktop.  At no point during
this process did it ask for university specific settings, and all the
required configuration was dynamically detected using information
fetched via DHCP and DNS.  The roaming workstation is now ready for
use.&lt;/p&gt;

&lt;p&gt;How was this done, you might wonder?  First of all, here is the
list of things that need to be configured on the client to get it
working properly out of the box:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;IP address/netmask and DNS server.&lt;/li&gt;
&lt;li&gt;Web proxy URL.&lt;/li&gt;
&lt;li&gt;LDAP server for NSS directory information (user, group, etc).&lt;/li&gt;
&lt;li&gt;Kerberos server for PAM password checking.&lt;/li&gt;
&lt;li&gt;SMB mount point to access the network home directory. (*)&lt;/li&gt;
&lt;li&gt;Central syslog server to send syslog messages to. (*)&lt;/li&gt;
&lt;li&gt;Sitesummary collector URL to submit info to central server. (*)&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;(Hm, did I forget anything?  Let me knew if I did.)&lt;/p&gt;

&lt;p&gt;The points marked (*) are not required to be able to use the
machine, but needed to provide central storage and allowing system
administrators to track their machines.  Since yesterday, everything
but the sitesummary collector URL is dynamically discovered at boot
and installation time in the svn version of Debian Edu.&lt;/p&gt;

&lt;p&gt;The IP and DNS setup is fetched during boot using DHCP as usual.
When a DHCP update arrives, the proxy setup is updated by looking for
http://wpat/wpad.dat and using the content of this WPAD file to
configure the http and ftp proxy in /etc/environment and
/etc/apt/apt.conf.  I decided to update the proxy setup using a DHCP
hook to ensure that the client stops using the Debian Edu proxy when
it is moved outside the Debian Edu network, and instead uses any local
proxy present on the new network when it moves around.&lt;/p&gt;

&lt;p&gt;The DNS names of the LDAP, Kerberos and syslog server and related
configuration are generated using DNS information at boot.  First the
installer looks for a host named ldap in the current DNS domain.  If
not found, it looks for _ldap._tcp SRV records in DNS instead.  If an
LDAP server is found, its root DSE entry is requested and the
attributes namingContexts and defaultNamingContext are used to
determine which LDAP base to use for NSS.  If there are several
namingContexts attibutes and the defaultNamingContext is present, that
LDAP subtree is used as the base.  If defaultNamingContext is missing,
the subtrees listed as namingContexts are searched in sequence for any
object with class posixAccount or posixGroup, and the first one with
such an object is used as the LDAP base.  For Kerberos, a similar
search is done by first looking for a host named kerberos, and then
for the _kerberos._tcp SRV record.  I&#39;ve been unable to find a way to
look up the Kerberos realm, so for this the upper case string of the
current DNS domain is used.&lt;/p&gt;

&lt;p&gt;For the syslog server, the hosts syslog and loghost are searched
for, and the _syslog._udp SRV record is consulted if no such host is
found.  This algorithm works for both Debian Edu and the University of
Oslo.  A similar strategy would work for locating the sitesummary
server, but have not been implemented yet.  I decided to fetch and
save these settings during installation, to make sure moving to a
different network does not change the set of users being allowed to
log in nor the passwords required to log in.  Usernames and passwords
will be cached by sssd when the user logs in on the Debian Edu
network, and will not change as the laptop move around.  For a
non-roaming machine, there is no caching, but given that it is
supposed to stay in place it should not matter much.  Perhaps we
should switch those to use sssd too?&lt;/p&gt;

&lt;p&gt;The user&#39;s SMB mount point for the network home directory is
located when the user logs in for the first time.  The LDAP server is
consulted to look for the user&#39;s LDAP object and the sambaHomePath
attribute is used if found.  If it isn&#39;t found, the home directory
path fetched from NSS is used instead.  Assuming the path is of the
form /site/server/directory/username, the second part is looked up in
DNS and used to generate a SMB URL of the form
smb://server.domain/username.  This algorithm works for both Debian
edu and the University of Oslo.  Perhaps there are better attributes
to use or a better algorithm that works for more sites, but this will
do for now. :)&lt;/p&gt;

&lt;p&gt;This work should make it easier to integrate the Debian Edu clients
into any LDAP/Kerberos infrastructure, and make the current setup even
more flexible than before.  I suspect it will also work for thin
client servers, allowing one to easily set up LTSP and hook it into a
existing network infrastructure, but I have not had time to test this
yet.&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing these things for Debian
Edu, please contact us on debian-edu@lists.debian.org.&lt;/p&gt;

&lt;p&gt;Update 2010-08-09: Simon Farnsworth gave me a heads-up on how to
detect Kerberos realm from DNS, by looking for _kerberos TXT entries
before falling back to the upper case DNS domain name.  Will have to
implement it for Debian Edu. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Testing if a file system can be used for home directories...</title>
                <link>http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html</guid>
                <pubDate>Sun, 8 Aug 2010 21:20:00 +0200</pubDate>
                <description>&lt;p&gt;A few years ago, I was involved in a project planning to use
Windows file servers as home directory servers for Debian
Edu/Skolelinux machines.  This was thought to be no problem, as the
access would be through the SMB network file system protocol, and we
knew other sites used SMB with unix and samba as the file server to
mount home directories without any problems.  But, after months of
struggling, we had to conclude that our goal was impossible.&lt;/p&gt;

&lt;p&gt;The reason is simply that while SMB can be used for home
directories when the file server is Samba running on Unix, this only
work because of Samba have some extensions and the fact that the
underlying file system is a unix file system.  When using a Windows
file server, the underlying file system do not have POSIX semantics,
and several programs will fail if the users home directory where they
want to store their configuration lack POSIX semantics.&lt;/p&gt;

&lt;p&gt;As part of this work, I wrote a small C program I want to share
with you all, to replicate a few of the problematic applications (like
OpenOffice.org and GCompris) and see if the file system was working as
it should.  If you find yourself in spooky file system land, it might
help you find your way out again.  This is the fs-test.c source:&lt;/p&gt;

&lt;pre&gt;
/*
 * Some tests to check the file system sematics.  Used to verify that
 * CIFS from a windows server do not work properly as a linux home
 * directory.
 * License: GPL v2 or later
 * 
 * needs libsqlite3-dev and build-essential installed
 * compile with: gcc -Wall -lsqlite3 -DTEST_SQLITE fs-test.c -o fs-test
*/

#define _FILE_OFFSET_BITS 64
#define _LARGEFILE_SOURCE 1
#define _LARGEFILE64_SOURCE 1

#define _GNU_SOURCE /* for asprintf() */

#include &amp;lt;errno.h&gt;
#include &amp;lt;fcntl.h&gt;
#include &amp;lt;stdio.h&gt;
#include &amp;lt;string.h&gt;
#include &amp;lt;stdlib.h&gt;
#include &amp;lt;sys/file.h&gt;
#include &amp;lt;sys/stat.h&gt;
#include &amp;lt;sys/types.h&gt;
#include &amp;lt;unistd.h&gt;

#ifdef TEST_SQLITE
/*
 * Test sqlite open, as done by gcompris require the libsqlite3-dev
 * package and linking with -lsqlite3.  A more low level test is
 * below.
 * See also &amp;lt;URL: http://www.sqlite.org./faq.html#q5 &gt;.
 */
#include &amp;lt;sqlite3.h&gt;
#define CREATE_TABLE_USERS                                              \
  &quot;CREATE TABLE users (user_id INT UNIQUE, login TEXT, lastname TEXT, firstname TEXT, birthdate TEXT, class_id INT ); &quot;
int test_sqlite_open(void) {
  char *zErrMsg;
  char *name = &quot;testsqlite.db&quot;;
  sqlite3 *db=NULL;
  unlink(name);
  int rc = sqlite3_open(name, &amp;db);
  if( rc ){
    printf(&quot;error: sqlite open of %s failed: %s\n&quot;, name, sqlite3_errmsg(db));
    sqlite3_close(db);
    return -1;
  }

  /* create tables */
  rc = sqlite3_exec(db,CREATE_TABLE_USERS, NULL,  0, &amp;zErrMsg);
  if( rc != SQLITE_OK ){
    printf(&quot;error: sqlite table create failed: %s\n&quot;, zErrMsg);
    sqlite3_close(db);
    return -1;
  }
  printf(&quot;info: sqlite worked\n&quot;);
  sqlite3_close(db);
  return 0;
}
#endif /* TEST_SQLITE */

/*
 * Demonstrate locking issue found in gcompris using sqlite3.  This
 * work with ext3, but not with cifs server on Windows 2003.  This is
 * done in the sqlite3 library.
 * See also
 * &amp;lt;URL:http://www.cygwin.com/ml/cygwin/2001-08/msg00854.html&gt; and the
 * POSIX specification
 * &amp;lt;URL:http://www.opengroup.org/onlinepubs/009695399/functions/fcntl.html&gt;.
 */
int test_gcompris_locking(void) {
  struct flock fl;
  char *name = &quot;testsqlite.db&quot;;
  unlink(name);
  int fd = open(name, O_RDWR|O_CREAT|O_LARGEFILE, 0644);
  printf(&quot;info: testing fcntl locking\n&quot;);

  fl.l_whence = SEEK_SET;
  fl.l_pid    = getpid();
  printf(&quot;  Read-locking 1 byte from 1073741824&quot;);
  fl.l_start  = 1073741824;
  fl.l_len    = 1;
  fl.l_type   = F_RDLCK;
  if (0 != fcntl(fd, F_SETLK, &amp;fl) ) printf(&quot; - error!\n&quot;); else printf(&quot;\n&quot;);

  printf(&quot;  Read-locking 510 byte from 1073741826&quot;);
  fl.l_start  = 1073741826;
  fl.l_len    = 510;
  fl.l_type   = F_RDLCK;
  if (0 != fcntl(fd, F_SETLK, &amp;fl) ) printf(&quot; - error!\n&quot;); else printf(&quot;\n&quot;);

  printf(&quot;  Unlocking 1 byte from 1073741824&quot;);
  fl.l_start  = 1073741824;
  fl.l_len    = 1;
  fl.l_type   = F_UNLCK;
  if (0 != fcntl(fd, F_SETLK, &amp;fl) ) printf(&quot; - error!\n&quot;); else printf(&quot;\n&quot;);

  printf(&quot;  Write-locking 1 byte from 1073741824&quot;);
  fl.l_start  = 1073741824;
  fl.l_len    = 1;
  fl.l_type   = F_WRLCK;
  if (0 != fcntl(fd, F_SETLK, &amp;fl) ) printf(&quot; - error!\n&quot;); else printf(&quot;\n&quot;);

  printf(&quot;  Write-locking 510 byte from 1073741826&quot;);
  fl.l_start  = 1073741826;
  fl.l_len    = 510;
  if (0 != fcntl(fd, F_SETLK, &amp;fl) ) printf(&quot; - error!\n&quot;); else printf(&quot;\n&quot;);

  printf(&quot;  Unlocking 2 byte from 1073741824&quot;);
  fl.l_start  = 1073741824;
  fl.l_len    = 2;
  fl.l_type   = F_UNLCK;
  if (0 != fcntl(fd, F_SETLK, &amp;fl) ) printf(&quot; - error!\n&quot;); else printf(&quot;\n&quot;);

  close(fd);
  return 0;
}

/*
 * Test if permissions of freshly created directories allow entries
 * below them.  This was a problem with OpenOffice.org and gcompris.
 * Mounting with option &#39;sync&#39; seem to solve this problem while
 * slowing down file operations.
 */
int test_subdirectory_creation(void) {
#define LEVELS 5
  char *path = strdup(&quot;test&quot;);
  char *dirs[LEVELS];
  int level;
  printf(&quot;info: testing subdirectory creation\n&quot;);
  for (level = 0; level &amp;lt; LEVELS; level++) {
    char *newpath = NULL;
    if (-1 == mkdir(path, 0777)) {
      printf(&quot;  error: Unable to create directory &#39;%s&#39;: %s\n&quot;,
             path, strerror(errno));
      break;
    }
    asprintf(&amp;newpath, &quot;%s/%s&quot;, path, &quot;test&quot;);
    free(path);
    path = newpath;
  }
  return 0;
}

/*
 * Test if symlinks can be created.  This was a problem detected with
 * KDE.
 */
int test_symlinks(void) {
  printf(&quot;info: testing symlink creation\n&quot;);
  unlink(&quot;symlink&quot;);
  if (-1 == symlink(&quot;file&quot;, &quot;symlink&quot;))
    printf(&quot;  error: Unable to create symlink\n&quot;);
  return 0;
}

int main(int argc, char **argv) {
  printf(&quot;Testing POSIX/Unix sematics on file system\n&quot;);
  test_symlinks();
  test_subdirectory_creation();
#ifdef TEST_SQLITE
  test_sqlite_open();
#endif /* TEST_SQLITE */
  test_gcompris_locking();
  return 0;
}
&lt;/pre&gt;

&lt;p&gt;When everything is working, it should print something like
this:&lt;/p&gt;

&lt;pre&gt;
Testing POSIX/Unix sematics on file system
info: testing symlink creation
info: testing subdirectory creation
info: sqlite worked
info: testing fcntl locking
  Read-locking 1 byte from 1073741824
  Read-locking 510 byte from 1073741826
  Unlocking 1 byte from 1073741824
  Write-locking 1 byte from 1073741824
  Write-locking 510 byte from 1073741826
  Unlocking 2 byte from 1073741824
&lt;/pre&gt;

&lt;p&gt;I do not remember the exact details of the problems we saw, but one
of them was with locking, where if I remember correctly, POSIX allow a
read-only lock to be upgraded to a read-write lock without unlocking
the read-only lock (while Windows do not).  Another was a bug in the
CIFS/SMB client implementation in the Linux kernel where directory
meta information would be wrong for a fraction of a second, making
OpenOffice.org fail to create its deep directory tree because it was
not allowed to create files in its freshly created directory.&lt;/p&gt;

&lt;p&gt;Anyway, here is a nice tool for your tool box, might you never need
it. :)&lt;/p&gt;

&lt;p&gt;Update 2010-08-27: Michael Gebetsroither report that he found the
script so useful that he created a GIT repository and stored it in
&lt;a href=&quot;http://github.com/gebi/fs-test&quot;&gt;http://github.com/gebi/fs-test&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Autodetecting Client setup for roaming workstations in Debian Edu</title>
                <link>http://people.skolelinux.org/pere/blog/Autodetecting_Client_setup_for_roaming_workstations_in_Debian_Edu.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Autodetecting_Client_setup_for_roaming_workstations_in_Debian_Edu.html</guid>
                <pubDate>Sat, 7 Aug 2010 14:45:00 +0200</pubDate>
                <description>&lt;p&gt;A few days ago, I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Debian_Edu_roaming_workstation___at_the_university_of_Oslo.html&quot;&gt;tried
to install&lt;/a&gt; a Roaming workation profile from Debian Edu/Squeeze
while on the university network here at the University of Oslo, and
noticed how much had to change to get it operational using the
university infrastructure.  It was fairly easy, but it occured to me
that Debian Edu would improve a lot if I could get the client to
connect without any changes at all, and thus let the client configure
itself during installation and first boot to use the infrastructure
around it.  Now I am a huge step further along that road.&lt;/p&gt;

&lt;p&gt;With our current squeeze-test packages, I can select the roaming
workstation profile and get a working laptop connecting to the
university LDAP server for user and group and our active directory
servers for Kerberos authentication.  All this without any
configuration at all during installation.  My users home directory got
a bookmark in the KDE menu to mount it via SMB, with the correct URL.
In short, openldap and sssd is correctly configured.  In addition to
this, the client look for http://wpad/wpad.dat to configure a web
proxy, and when it fail to find it no proxy settings are stored in
/etc/environment and /etc/apt/apt.conf.  Iceweasel and KDE is
configured to look for the same wpad configuration and also do not use
a proxy when at the university network.  If the machine is moved to a
network with such wpad setup, it would automatically use it when DHCP
gave it a IP address.&lt;/p&gt;

&lt;p&gt;The LDAP server is located using DNS, by first looking for the DNS
entry ldap.$domain.  If this do not exist, it look for the
_ldap._tcp.$domain SRV records and use the first one as the LDAP
server.  Next, it connects to the LDAP server and search all
namingContexts entries for posixAccount or posixGroup objects, and
pick the first one as the LDAP base.  For Kerberos, a similar
algorithm is used to locate the LDAP server, and the realm is the
uppercase version of $domain.&lt;/p&gt;

&lt;p&gt;So, what is not working, you might ask.  SMB mounting my home
directory do not work.  No idea why, but suspected the incorrect
Kerberos settings in /etc/krb5.conf and /etc/samba/smb.conf might be
the cause.  These are not properly configured during installation, and
had to be hand-edited to get the correct Kerberos realm and server,
but SMB mounting still do not work. :(&lt;/p&gt;

&lt;p&gt;With this automatic configuration in place, I expect a Debian Edu
roaming profile installation would be able to automatically detect and
connect to any site using LDAP and Kerberos for NSS directory and PAM
authentication.  It should also work out of the box in a Active
Directory environment providing posixAccount and posixGroup objects
with UID and GID values.&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing these things for Debian
Edu, please contact us on debian-edu@lists.debian.org.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu roaming workstation - at the university of Oslo</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu_roaming_workstation___at_the_university_of_Oslo.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu_roaming_workstation___at_the_university_of_Oslo.html</guid>
                <pubDate>Tue, 3 Aug 2010 23:30:00 +0200</pubDate>
                <description>&lt;p&gt;The new roaming workstation profile in Debian Edu/Squeeze is fairly
similar to the laptop setup am I working on using Ubuntu for the
University of Oslo, and just for the heck of it, I tested today how
hard it would be to integrate that profile into the university
infrastructure.  In this case, it is the university LDAP server,
Active Directory Kerberos server and SMB mounting from the Netapp file
servers.&lt;/p&gt;

&lt;p&gt;I was pleasantly surprised that the only three files needed to be
changed (/etc/sssd/sssd.conf, /etc/ldap.conf and
/etc/mklocaluser.d/20-debian-edu-config) and one file had to be added
(/usr/share/perl5/Debian/Edu_Local.pm), to get the client working.
Most of the changes were to get the client to use the university LDAP
for NSS and Kerberos server for PAM, but one was to change a hard
coded DNS domain name in the mklocaluser hook from .intern to
.uio.no.&lt;/p&gt;

&lt;p&gt;This testing was so encouraging, that I went ahead and adjusted the
Debian Edu scripts and setup in subversion to centralise the roaming
workstation setup a bit more and avoid the hardcoded DNS domain name,
so that when I test this tomorrow, I expect to get away with modifying
only /etc/sssd/sssd.conf and /etc/ldap.conf to get it to use the
university servers.&lt;/p&gt;

&lt;p&gt;My goal is to get the clients to have no hardcoded settings and
fetch all their initial setup during installation and first boot, to
allow them to be inserted also into environments where the default
setup in Debian Edu has been changed or as with the university, where
the environment is different but provides the protocols Debian Edu
uses.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Circular package dependencies harms apt recovery</title>
                <link>http://people.skolelinux.org/pere/blog/Circular_package_dependencies_harms_apt_recovery.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Circular_package_dependencies_harms_apt_recovery.html</guid>
                <pubDate>Tue, 27 Jul 2010 23:50:00 +0200</pubDate>
                <description>&lt;p&gt;I discovered this while doing
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Automatic_upgrade_testing_from_Lenny_to_Squeeze.html&quot;&gt;automated
testing of upgrades from Debian Lenny to Squeeze&lt;/a&gt;.  A few packages
in Debian still got circular dependencies, and it is often claimed
that apt and aptitude should be able to handle this just fine, but
some times these dependency loops causes apt to fail.&lt;/p&gt;

&lt;p&gt;An example is from todays
&lt;a href=&quot;http://people.skolelinux.org/~pere/debian-upgrade-testing//test-20100727-lenny-squeeze-kde-aptitude.txt&quot;&gt;upgrade
of KDE using aptitude&lt;/a&gt;.  In it, a bug in kdebase-workspace-data
causes perl-modules to fail to upgrade.  The cause is simple.  If a
package fail to unpack, then only part of packages with the circular
dependency might end up being unpacked when unpacking aborts, and the
ones already unpacked will fail to configure in the recovery phase
because its dependencies are unavailable.&lt;/p&gt;

&lt;p&gt;In this log, the problem manifest itself with this error:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
dpkg: dependency problems prevent configuration of perl-modules:
 perl-modules depends on perl (&gt;= 5.10.1-1); however:
  Version of perl on system is 5.10.0-19lenny2.
dpkg: error processing perl-modules (--configure):
 dependency problems - leaving unconfigured
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The perl/perl-modules circular dependency is already
&lt;a href=&quot;http://bugs.debian.org/527917&quot;&gt;reported as a bug&lt;/a&gt;, and will
hopefully be solved as soon as possible, but it is not the only one,
and each one of these loops in the dependency tree can cause similar
failures.  Of course, they only occur when there are bugs in other
packages causing the unpacking to fail, but it is rather nasty when
the failure of one package causes the problem to become worse because
of dependency loops.&lt;/p&gt;

&lt;p&gt;Thanks to
&lt;a href=&quot;http://lists.debian.org/debian-devel/2010/06/msg00116.html&quot;&gt;the
tireless effort by Bill Allombert&lt;/a&gt;, the number of circular
dependencies
&lt;a href=&quot;http://debian.semistable.com/debgraph.out.html&quot;&gt;left in Debian
is dropping&lt;/a&gt;, and perhaps it will reach zero one day. :)&lt;/p&gt;

&lt;p&gt;Todays testing also exposed a bug in
&lt;a href=&quot;http://bugs.debian.org/590605&quot;&gt;update-notifier&lt;/a&gt; and
&lt;a href=&quot;http://bugs.debian.org/590604&quot;&gt;different behaviour&lt;/a&gt; between
apt-get and aptitude, the latter possibly caused by some circular
dependency.  Reported both to BTS to try to get someone to look at
it.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>First Debian Edu test release (alpha0) based on Squeeze is released</title>
                <link>http://people.skolelinux.org/pere/blog/First_Debian_Edu_test_release__alpha0__based_on_Squeeze_is_released.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_Debian_Edu_test_release__alpha0__based_on_Squeeze_is_released.html</guid>
                <pubDate>Tue, 27 Jul 2010 17:45:00 +0200</pubDate>
                <description>&lt;p&gt;I just posted this announcement culminating several months of work
with the next Debian Edu release.  Not nearly done, but one major step
completed.&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;This is the first test release based on Squeeze. The focus of this
release is to test the user application selection. To have a look,
install the standalone profile and let the developers know if the set
of installed packages i.e. applications should be modified. If some
user application is missing, or if there are some applications that no
longer make sense to be included in Debian Edu, please let us know.
Also, if a useful application is missing the translation for your
language of choice, please let us know too.&lt;/p&gt;

&lt;p&gt;In addition, feedback and help to polish the desktop (menus,
artwork, starters, etc.) is appreciated. We would like to ship a nice
and handy KDE4 desktop targeted for schools out of the box.&lt;/p&gt;

&lt;p&gt;The other profiles should be installable, but there is a lot more
work left to be done before they are ready, so do not expect to
much.&lt;/p&gt;

&lt;p&gt;Changes compared to the lenny based version&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Everything from Debian Squeeze
&lt;ul&gt;
  &lt;li&gt;Desktop environment KDE 4.4 =&gt; the new KDE desktop in
         combination with some new artwork
  &lt;li&gt;Web browser Iceweasel 3.5
  &lt;li&gt;OpenOffice.org 3.2
  &lt;li&gt;Educational toolbox GCompris 9.3
  &lt;li&gt;Music creator Rosegarden 10.04.2
  &lt;li&gt;Image editor Gimp 2.6.10
  &lt;li&gt;Virtual universe Celestia 1.6.0
  &lt;li&gt;Virtual stargazer Stellarium 0.10.4
  &lt;li&gt;3D modeler Blender 2.49.2 (new application)
  &lt;li&gt;Video editor Kdenlive 0.7.7 (new application)
&lt;/ul&gt;&lt;/li&gt;
&lt;li&gt;Now using Kerberos for password checking (migration not finished).
    Enabled for:
&lt;ul&gt;
  &lt;li&gt;PAM
  &lt;li&gt;LDAP
  &lt;li&gt;IMAP
  &lt;li&gt;SMTP (sender verification)
&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;New experimental roaming workstation profile for laptops.&lt;/li&gt;
&lt;li&gt;Show welcome page to users when they first log in. The URL is
    fetched from LDAP.&lt;/li&gt;
&lt;li&gt;New LXDE desktop option, in addition to KDE (default) and Gnome.&lt;/li&gt;
&lt;li&gt;General cleanup (not finished)&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;The following features are not working as they should&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;No web based administration tool for creating users and groups. The
    scripts ldap-createuser-krb and ldap-add-user-to-group can be used
    for testing.&lt;/li&gt;
&lt;li&gt;DVD installs are missing debian-installer images for the PXE boot,
    and do not set up the PXE menu on eth0 because of this. LTSP
    clients should still boot from eth1 on thin client servers.&lt;/li&gt;
&lt;li&gt;The restructured KDE menu is not implemented.&lt;/li&gt;
&lt;li&gt;The LDAP server setup need to be reviewed for security.&lt;/li&gt;
&lt;li&gt;The LDAP directory structure need to be reworked.&lt;/li&gt;
&lt;li&gt;Different sets of packages are installed when using the DVD and the
    netinst CD. More packages are installed using the netinst CD.&lt;/li&gt;
&lt;li&gt;The jackd package fail to install. This is believed to be caused by
    some ongoing transition, and hopefully should be solved soon. The
    jackd1 package can be installed manually for those that need it.&lt;/li&gt;
&lt;li&gt;Some packages lack translations. See
    http://wiki.debian.org/DebianEdu/Status/Squeeze for updated status,
    and help out with translations.&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;To download this multiarch netinstall release you can use&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;To download this multiarch dvd release you can use&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;&lt;a href=&quot;ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso&quot;&gt;ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href=&quot;http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso&quot;&gt;http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;rsync -avzP ftp.skolelinux.org::skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;There is no source DVD available yet. It will be prepared when we
get closer to the final release.&lt;/p&gt;

&lt;p&gt;The MD5SUM of these images are&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;3dbf45d59f42a53518b6e3c9ec3b5eb6 debian-edu-6.0.0+edua0-CD.iso&lt;/li&gt;
&lt;li&gt;22f2cbfce281d1c6e478be452638675d debian-edu-6.0.0+edua0-DVD.iso&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;The SHA1SUM of these images are&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;c53d1b69b40cf37cd27aefaf33f6f6a3821bedf0 debian-edu-6.0.0+edua0-CD.iso&lt;/li&gt;
&lt;li&gt;2ec29d7db676d59d32197b05c277ffe16348376c debian-edu-6.0.0+edua0-DVD.iso&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;How to report bugs:
http://wiki.debian.org/DebianEdu/HowTo/ReportBugsInBugzilla&lt;/p&gt;

&lt;p&gt;Please direct replies to debian-edu@lists.debian.org&lt;/p&gt;
&lt;/blockquote&gt;
</description>
        </item>
        
        <item>
                <title>One step closer to single signon in Debian Edu</title>
                <link>http://people.skolelinux.org/pere/blog/One_step_closer_to_single_signon_in_Debian_Edu.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/One_step_closer_to_single_signon_in_Debian_Edu.html</guid>
                <pubDate>Sun, 25 Jul 2010 10:00:00 +0200</pubDate>
                <description>&lt;p&gt;The last few months me and the other Debian Edu developers have
been working hard to get the Debian/Squeeze based version of Debian
Edu/Skolelinux into shape.  This future version will use Kerberos for
authentication, and services are slowly migrated to single signon,
getting rid of password questions one at the time.&lt;/p&gt;

&lt;p&gt;It will also feature a roaming workstation profile with local home
directory, for laptops that are only some times on the Skolelinux
network, and for this profile a shortcut is created in Gnome and KDE
to gain access to the users home directory on the file server.  This
shortcut uses SMB at the moment, and yesterday I had time to test if
SMB mounting had started working in KDE after we added the cifs-utils
package.  I was pleasantly surprised how well it worked.&lt;/p&gt;

&lt;p&gt;Thanks to the recent changes to our samba configuration to get it
to use Kerberos for authentication, there were no question about user
password when mounting the SMB volume.  A simple click on the shortcut
in the KDE menu, and a window with the home directory popped
up. :)&lt;/p&gt;

&lt;p&gt;One step closer to a single signon solution out of the box in
Debian Edu.  We already had PAM, LDAP, IMAP and SMTP in place, and now
also Samba.  Next step is Cups and hopefully also NFS.&lt;/p&gt;

&lt;p&gt;We had planned a alpha0 release of Debian Edu for today, but thanks
to the autobuilder administrators for some architectures being slow to
sign packages, we are still missing the fixed LTSP package we need for
the release.  It was uploaded three days ago with urgency=high, and if
it had entered testing yesterday we would have been able to test it in
time for a alpha0 release today.  As the binaries for ia64 and powerpc
still not uploaded to the Debian archive, we need to delay the alpha
release another day.&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing Kerberos for Debian Edu,
please contact us on debian-edu@lists.debian.org.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>OpenStreetmap one step closer to having routing on its front page</title>
                <link>http://people.skolelinux.org/pere/blog/OpenStreetmap_one_step_closer_to_having_routing_on_its_front_page.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/OpenStreetmap_one_step_closer_to_having_routing_on_its_front_page.html</guid>
                <pubDate>Sun, 18 Jul 2010 16:45:00 +0200</pubDate>
                <description>&lt;p&gt;Thanks to
&lt;a href=&quot;http://feedproxy.google.com/~r/Opengeodata/~3/wUTCzDZk3lc/project-of-the-week-which-way-home&quot;&gt;todays
opengeodata blog entry&lt;/a&gt;, I just discovered that the
OpenStreetmap.org site have gotten
&lt;a href=&quot;http://nroets.dev.openstreetmap.org/demo/index.html?layers=B000FTFTT&quot;&gt;support
for calculating routes&lt;/a&gt;.  The support is still experimental and
only available from the development server, until more experience is
gathered on the user interface and any scalability issues.&lt;/p&gt;

&lt;p&gt;Earlier, the routing I knew about using the OpenStreetmap.org data
was provided by &lt;a href=&quot;http://maps.cloudmade.com/&quot;&gt;Cloudmade&lt;/a&gt;,
but having it on the main page is required to make everyone aware of
the issue.  I&#39;ve had people reject Openstreetmap.org as a viable
alternative for them because the front page lacked routing support,
and I hope their needs will be catered for when routing show up on the
www.openstreetmap.org front page.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>What are they searching for - PowerDNS and ISC DHCP in LDAP</title>
                <link>http://people.skolelinux.org/pere/blog/What_are_they_searching_for___PowerDNS_and_ISC_DHCP_in_LDAP.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_are_they_searching_for___PowerDNS_and_ISC_DHCP_in_LDAP.html</guid>
                <pubDate>Sat, 17 Jul 2010 21:00:00 +0200</pubDate>
                <description>&lt;p&gt;This is a
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html&quot;&gt;followup&lt;/a&gt;
on my
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Idea_for_a_change_to_LDAP_schemas_allowing_DNS_and_DHCP_info_to_be_combined_into_one_object.html&quot;&gt;previous
work&lt;/a&gt; on
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Combining_PowerDNS_and_ISC_DHCP_LDAP_objects.html&quot;&gt;merging
all&lt;/a&gt; the computer related LDAP objects in Debian Edu.&lt;/p&gt;

&lt;p&gt;As a step to try to see if it possible to merge the DNS and DHCP
LDAP objects, I have had a look at how the packages pdns-backend-ldap
and dhcp3-server-ldap in Debian use the LDAP server.  The two
implementations are quite different in how they use LDAP.&lt;/p&gt;

To get this information, I started slapd with debugging enabled and
dumped the debug output to a file to get the LDAP searches performed
on a Debian Edu main-server.  Here is a summary.

&lt;p&gt;&lt;strong&gt;powerdns&lt;/strong&gt;&lt;/p&gt;

&lt;a href=&quot;http://www.linuxnetworks.de/doc/index.php/PowerDNS_LDAP_Backend&quot;&gt;Clues
on how to&lt;/a&gt; set up PowerDNS to use a LDAP backend is available on
the web.

&lt;p&gt;PowerDNS have two modes of operation using LDAP as its backend.
One &quot;strict&quot; mode where the forward and reverse DNS lookups are done
using the same LDAP objects, and a &quot;tree&quot; mode where the forward and
reverse entries are in two different subtrees in LDAP with a structure
based on the DNS names, as in tjener.intern and
2.2.0.10.in-addr.arpa.&lt;/p&gt;

&lt;p&gt;In tree mode, the server is set up to use a LDAP subtree as its
base, and uses a &quot;base&quot; scoped search for the DNS name by adding
&quot;dc=tjener,dc=intern,&quot; to the base with a filter for
&quot;(associateddomain=tjener.intern)&quot; for the forward entry and
&quot;dc=2,dc=2,dc=0,dc=10,dc=in-addr,dc=arpa,&quot; with a filter for
&quot;(associateddomain=2.2.0.10.in-addr.arpa)&quot; for the reverse entry.  For
forward entries, it is looking for attributes named dnsttl, arecord,
nsrecord, cnamerecord, soarecord, ptrrecord, hinforecord, mxrecord,
txtrecord, rprecord, afsdbrecord, keyrecord, aaaarecord, locrecord,
srvrecord, naptrrecord, kxrecord, certrecord, dsrecord, sshfprecord,
ipseckeyrecord, rrsigrecord, nsecrecord, dnskeyrecord, dhcidrecord,
spfrecord and modifytimestamp.  For reverse entries it is looking for
the attributes dnsttl, arecord, nsrecord, cnamerecord, soarecord,
ptrrecord, hinforecord, mxrecord, txtrecord, rprecord, aaaarecord,
locrecord, srvrecord, naptrrecord and modifytimestamp.  The equivalent
ldapsearch commands could look like this:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
ldapsearch -h ldap \
  -b dc=tjener,dc=intern,ou=hosts,dc=skole,dc=skolelinux,dc=no \
  -s base -x &#39;(associateddomain=tjener.intern)&#39; dNSTTL aRecord nSRecord \
  cNAMERecord sOARecord pTRRecord hInfoRecord mXRecord tXTRecord \
  rPRecord aFSDBRecord KeyRecord aAAARecord lOCRecord sRVRecord \
  nAPTRRecord kXRecord certRecord dSRecord sSHFPRecord iPSecKeyRecord \
  rRSIGRecord nSECRecord dNSKeyRecord dHCIDRecord sPFRecord modifyTimestamp

ldapsearch -h ldap \
  -b dc=2,dc=2,dc=0,dc=10,dc=in-addr,dc=arpa,ou=hosts,dc=skole,dc=skolelinux,dc=no \
  -s base -x &#39;(associateddomain=2.2.0.10.in-addr.arpa)&#39;
  dnsttl, arecord, nsrecord, cnamerecord soarecord ptrrecord \
  hinforecord mxrecord txtrecord rprecord aaaarecord locrecord \
  srvrecord naptrrecord modifytimestamp
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;In Debian Edu/Lenny, the PowerDNS tree mode is used with
ou=hosts,dc=skole,dc=skolelinux,dc=no as the base, and these are two
example LDAP objects used there.  In addition to these objects, the
parent objects all th way up to ou=hosts,dc=skole,dc=skolelinux,dc=no
also exist.&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
dn: dc=tjener,dc=intern,ou=hosts,dc=skole,dc=skolelinux,dc=no
objectclass: top
objectclass: dnsdomain
objectclass: domainrelatedobject
dc: tjener
arecord: 10.0.2.2
associateddomain: tjener.intern

dn: dc=2,dc=2,dc=0,dc=10,dc=in-addr,dc=arpa,ou=hosts,dc=skole,dc=skolelinux,dc=no
objectclass: top
objectclass: dnsdomain2
objectclass: domainrelatedobject
dc: 2
ptrrecord: tjener.intern
associateddomain: 2.2.0.10.in-addr.arpa
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;In strict mode, the server behaves differently.  When looking for
forward DNS entries, it is doing a &quot;subtree&quot; scoped search with the
same base as in the tree mode for a object with filter
&quot;(associateddomain=tjener.intern)&quot; and requests the attributes dnsttl,
arecord, nsrecord, cnamerecord, soarecord, ptrrecord, hinforecord,
mxrecord, txtrecord, rprecord, aaaarecord, locrecord, srvrecord,
naptrrecord and modifytimestamp.  For reverse entires it also do a
subtree scoped search but this time the filter is &quot;(arecord=10.0.2.2)&quot;
and the requested attributes are associateddomain, dnsttl and
modifytimestamp.  In short, in strict mode the objects with ptrrecord
go away, and the arecord attribute in the forward object is used
instead.&lt;/p&gt;

&lt;p&gt;The forward and reverse searches can be simulated using ldapsearch
like this:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
ldapsearch -h ldap -b ou=hosts,dc=skole,dc=skolelinux,dc=no -s sub -x \
  &#39;(associateddomain=tjener.intern)&#39; dNSTTL aRecord nSRecord \
  cNAMERecord sOARecord pTRRecord hInfoRecord mXRecord tXTRecord \
  rPRecord aFSDBRecord KeyRecord aAAARecord lOCRecord sRVRecord \
  nAPTRRecord kXRecord certRecord dSRecord sSHFPRecord iPSecKeyRecord \
  rRSIGRecord nSECRecord dNSKeyRecord dHCIDRecord sPFRecord modifyTimestamp

ldapsearch -h ldap -b ou=hosts,dc=skole,dc=skolelinux,dc=no -s sub -x \
  &#39;(arecord=10.0.2.2)&#39; associateddomain dnsttl modifytimestamp
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;In addition to the forward and reverse searches , there is also a
search for SOA records, which behave similar to the forward and
reverse lookups.&lt;/p&gt;

&lt;p&gt;A thing to note with the PowerDNS behaviour is that it do not
specify any objectclass names, and instead look for the attributes it
need to generate a DNS reply.  This make it able to work with any
objectclass that provide the needed attributes.&lt;/p&gt;

&lt;p&gt;The attributes are normally provided in the cosine (RFC 1274) and
dnsdomain2 schemas.  The latter is used for reverse entries like
ptrrecord and recent DNS additions like aaaarecord and srvrecord.&lt;/p&gt;

&lt;p&gt;In Debian Edu, we have created DNS objects using the object classes
dcobject (for dc), dnsdomain or dnsdomain2 (structural, for the DNS
attributes) and domainrelatedobject (for associatedDomain).  The use
of structural object classes make it impossible to combine these
classes with the object classes used by DHCP.&lt;/p&gt;

&lt;p&gt;There are other schemas that could be used too, for example the
dnszone structural object class used by Gosa and bind-sdb for the DNS
attributes combined with the domainrelatedobject object class, but in
this case some unused attributes would have to be included as well
(zonename and relativedomainname).&lt;/p&gt;

&lt;p&gt;My proposal for Debian Edu would be to switch PowerDNS to strict
mode and not use any of the existing objectclasses (dnsdomain,
dnsdomain2 and dnszone) when one want to combine the DNS information
with DHCP information, and instead create a auxiliary object class
defined something like this (using the attributes defined for
dnsdomain and dnsdomain2 or dnszone):&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
objectclass ( some-oid NAME &#39;dnsDomainAux&#39;
    SUP top
    AUXILIARY
    MAY ( ARecord $ MDRecord $ MXRecord $ NSRecord $ SOARecord $ CNAMERecord $
          DNSTTL $ DNSClass $ PTRRecord $ HINFORecord $ MINFORecord $
          TXTRecord $ SIGRecord $ KEYRecord $ AAAARecord $ LOCRecord $
          NXTRecord $ SRVRecord $ NAPTRRecord $ KXRecord $ CERTRecord $
          A6Record $ DNAMERecord
    ))
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;This will allow any object to become a DNS entry when combined with
the domainrelatedobject object class, and allow any entity to include
all the attributes PowerDNS wants.  I&#39;ve sent an email to the PowerDNS
developers asking for their view on this schema and if they are
interested in providing such schema with PowerDNS, and I hope my
message will be accepted into their mailing list soon.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;ISC dhcp&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The DHCP server searches for specific objectclass and requests all
the object attributes, and then uses the attributes it want.  This
make it harder to figure out exactly what attributes are used, but
thanks to the working example in Debian Edu I can at least get an idea
what is needed without having to read the source code.&lt;/p&gt;

&lt;p&gt;In the DHCP server configuration, the LDAP base to use and the
search filter to use to locate the correct dhcpServer entity is
stored.  These are the relevant entries from
/etc/dhcp3/dhcpd.conf:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
ldap-base-dn &quot;dc=skole,dc=skolelinux,dc=no&quot;;
ldap-dhcp-server-cn &quot;dhcp&quot;;
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The DHCP server uses this information to nest all the DHCP
configuration it need.  The cn &quot;dhcp&quot; is located using the given LDAP
base and the filter &quot;(&amp;(objectClass=dhcpServer)(cn=dhcp))&quot;.  The
search result is this entry:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
dn: cn=dhcp,dc=skole,dc=skolelinux,dc=no
cn: dhcp
objectClass: top
objectClass: dhcpServer
dhcpServiceDN: cn=DHCP Config,dc=skole,dc=skolelinux,dc=no
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The content of the dhcpServiceDN attribute is next used to locate the
subtree with DHCP configuration.  The DHCP configuration subtree base
is located using a base scope search with base &quot;cn=DHCP
Config,dc=skole,dc=skolelinux,dc=no&quot; and filter
&quot;(&amp;(objectClass=dhcpService)(|(dhcpPrimaryDN=cn=dhcp,dc=skole,dc=skolelinux,dc=no)(dhcpSecondaryDN=cn=dhcp,dc=skole,dc=skolelinux,dc=no)))&quot;.
The search result is this entry:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
dn: cn=DHCP Config,dc=skole,dc=skolelinux,dc=no
cn: DHCP Config
objectClass: top
objectClass: dhcpService
objectClass: dhcpOptions
dhcpPrimaryDN: cn=dhcp, dc=skole,dc=skolelinux,dc=no
dhcpStatements: ddns-update-style none
dhcpStatements: authoritative
dhcpOption: smtp-server code 69 = array of ip-address
dhcpOption: www-server code 72 = array of ip-address
dhcpOption: wpad-url code 252 = text
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;Next, the entire subtree is processed, one level at the time.  When
all the DHCP configuration is loaded, it is ready to receive requests.
The subtree in Debian Edu contain objects with object classes
top/dhcpService/dhcpOptions, top/dhcpSharedNetwork/dhcpOptions,
top/dhcpSubnet, top/dhcpGroup and top/dhcpHost.  These provide options
and information about netmasks, dynamic range etc.  Leaving out the
details here because it is not relevant for the focus of my
investigation, which is to see if it is possible to merge dns and dhcp
related computer objects.&lt;/p&gt;

&lt;p&gt;When a DHCP request come in, LDAP is searched for the MAC address
of the client (00:00:00:00:00:00 in this example), using a subtree
scoped search with &quot;cn=DHCP Config,dc=skole,dc=skolelinux,dc=no&quot; as
the base and &quot;(&amp;(objectClass=dhcpHost)(dhcpHWAddress=ethernet
00:00:00:00:00:00))&quot; as the filter.  This is what a host object look
like:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
dn: cn=hostname,cn=group1,cn=THINCLIENTS,cn=DHCP Config,dc=skole,dc=skolelinux,dc=no
cn: hostname
objectClass: top
objectClass: dhcpHost
dhcpHWAddress: ethernet 00:00:00:00:00:00
dhcpStatements: fixed-address hostname
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;There is less flexiblity in the way LDAP searches are done here.
The object classes need to have fixed names, and the configuration
need to be stored in a fairly specific LDAP structure.  On the
positive side, the invidiual dhcpHost entires can be anywhere without
the DN pointed to by the dhcpServer entries.  The latter should make
it possible to group all host entries in a subtree next to the
configuration entries, and this subtree can also be shared with the
DNS server if the schema proposed above is combined with the dhcpHost
structural object class.

&lt;p&gt;&lt;strong&gt;Conclusion&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;The PowerDNS implementation seem to be very flexible when it come
to which LDAP schemas to use.  While its &quot;tree&quot; mode is rigid when it
come to the the LDAP structure, the &quot;strict&quot; mode is very flexible,
allowing DNS objects to be stored anywhere under the base cn specified
in the configuration.&lt;/p&gt;

&lt;p&gt;The DHCP implementation on the other hand is very inflexible, both
regarding which LDAP schemas to use and which LDAP structure to use.
I guess one could implement ones own schema, as long as the
objectclasses and attributes have the names used, but this do not
really help when the DHCP subtree need to have a fairly fixed
structure.&lt;/p&gt;

&lt;p&gt;Based on the observed behaviour, I suspect a LDAP structure like
this might work for Debian Edu:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
ou=services
  cn=machine-info (dhcpService) - dhcpServiceDN points here
    cn=dhcp (dhcpServer)
    cn=dhcp-internal (dhcpSharedNetwork/dhcpOptions)
      cn=10.0.2.0 (dhcpSubnet)
        cn=group1 (dhcpGroup/dhcpOptions)
    cn=dhcp-thinclients (dhcpSharedNetwork/dhcpOptions)
      cn=192.168.0.0 (dhcpSubnet)
        cn=group1 (dhcpGroup/dhcpOptions)
    ou=machines - PowerDNS base points here
      cn=hostname (dhcpHost/domainrelatedobject/dnsDomainAux)
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;P&gt;This is not tested yet.  If the DHCP server require the dhcpHost
entries to be in the dhcpGroup subtrees, the entries can be stored
there instead of a common machines subtree, and the PowerDNS base
would have to be moved one level up to the machine-info subtree.&lt;/p&gt;

&lt;p&gt;The combined object under the machines subtree would look something
like this:&lt;/p&gt;
    
&lt;blockquote&gt;&lt;pre&gt;
dn: dc=hostname,ou=machines,cn=machine-info,dc=skole,dc=skolelinux,dc=no
dc: hostname
objectClass: top
objectClass: dhcpHost
objectclass: domainrelatedobject
objectclass: dnsDomainAux
associateddomain: hostname.intern
arecord: 10.11.12.13
dhcpHWAddress: ethernet 00:00:00:00:00:00
dhcpStatements: fixed-address hostname.intern
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;/p&gt;One could even add the LTSP configuration associated with a given
machine, as long as the required attributes are available in a
auxiliary object class.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Combining PowerDNS and ISC DHCP LDAP objects</title>
                <link>http://people.skolelinux.org/pere/blog/Combining_PowerDNS_and_ISC_DHCP_LDAP_objects.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Combining_PowerDNS_and_ISC_DHCP_LDAP_objects.html</guid>
                <pubDate>Wed, 14 Jul 2010 23:45:00 +0200</pubDate>
                <description>&lt;p&gt;For a while now, I have wanted to find a way to change the DNS and
DHCP services in Debian Edu to use the same LDAP objects for a given
computer, to avoid the possibility of having a inconsistent state for
a computer in LDAP (as in DHCP but no DNS entry or the other way
around) and make it easier to add computers to LDAP.&lt;/p&gt;

&lt;p&gt;I&#39;ve looked at how powerdns and dhcpd is using LDAP, and using this
information finally found a solution that seem to work.&lt;/p&gt;

&lt;p&gt;The old setup required three LDAP objects for a given computer.
One forward DNS entry, one reverse DNS entry and one DHCP entry.  If
we switch powerdns to use its strict LDAP method (ldap-method=strict
in pdns-debian-edu.conf), the forward and reverse DNS entries are
merged into one while making it impossible to transfer the reverse map
to a slave DNS server.&lt;/p&gt;

&lt;p&gt;If we also replace the object class used to get the DNS related
attributes to one allowing these attributes to be combined with the
dhcphost object class, we can merge the DNS and DHCP entries into one.
I&#39;ve written such object class in the dnsdomainaux.schema file (need
proper OIDs, but that is a minor issue), and tested the setup.  It
seem to work.&lt;/p&gt;

&lt;p&gt;With this test setup in place, we can get away with one LDAP object
for both DNS and DHCP, and even the LTSP configuration I suggested in
an earlier email.  The combined LDAP object will look something like
this:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
  dn: cn=hostname,cn=group1,cn=THINCLIENTS,cn=DHCP Config,dc=skole,dc=skolelinux,dc=no
  cn: hostname
  objectClass: dhcphost
  objectclass: domainrelatedobject
  objectclass: dnsdomainaux
  associateddomain: hostname.intern
  arecord: 10.11.12.13
  dhcphwaddress: ethernet 00:00:00:00:00:00
  dhcpstatements: fixed-address hostname
  ldapconfigsound: Y
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The DNS server uses the associateddomain and arecord entries, while
the DHCP server uses the dhcphwaddress and dhcpstatements entries
before asking DNS to resolve the fixed-adddress.  LTSP will use
dhcphwaddress or associateddomain and the ldapconfig* attributes.&lt;/p&gt;

&lt;p&gt;I am not yet sure if I can get the DHCP server to look for its
dhcphost in a different location, to allow us to put the objects
outside the &quot;DHCP Config&quot; subtree, but hope to figure out a way to do
that.  If I can&#39;t figure out a way to do that, we can still get rid of
the hosts subtree and move all its content into the DHCP Config tree
(which probably should be renamed to be more related to the new
content.  I suspect cn=dnsdhcp,ou=services or something like that
might be a good place to put it.&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing this for Debian Edu,
please contact us on debian-edu@lists.debian.org.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Idea for storing LTSP configuration in LDAP</title>
                <link>http://people.skolelinux.org/pere/blog/Idea_for_storing_LTSP_configuration_in_LDAP.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Idea_for_storing_LTSP_configuration_in_LDAP.html</guid>
                <pubDate>Sun, 11 Jul 2010 22:00:00 +0200</pubDate>
                <description>&lt;p&gt;Vagrant mentioned on IRC today that ltsp_config now support
sourcing files from /usr/share/ltsp/ltsp_config.d/ on the thin
clients, and that this can be used to fetch configuration from LDAP if
Debian Edu choose to store configuration there.&lt;/p&gt;

&lt;p&gt;Armed with this information, I got inspired and wrote a test module
to get configuration from LDAP.  The idea is to look up the MAC
address of the client in LDAP, and look for attributes on the form
ltspconfigsetting=value, and use this to export SETTING=value to the
LTSP clients.&lt;/p&gt;

&lt;p&gt;The goal is to be able to store the LTSP configuration attributes
in a &quot;computer&quot; LDAP object used by both DNS and DHCP, and thus
allowing us to store all information about a computer in one place.&lt;/p&gt;

&lt;p&gt;This is a untested draft implementation, and I welcome feedback on
this approach.  A real LDAP schema for the ltspClientAux objectclass
need to be written.  Comments, suggestions, etc?&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
# Store in /opt/ltsp/$arch/usr/share/ltsp/ltsp_config.d/ldap-config
#
# Fetch LTSP client settings from LDAP based on MAC address
#
# Uses ethernet address as stored in the dhcpHost objectclass using
# the dhcpHWAddress attribute or ethernet address stored in the
# ieee802Device objectclass with the macAddress attribute.
#
# This module is written to be schema agnostic, and only depend on the
# existence of attribute names.
#
# The LTSP configuration variables are saved directly using a
# ltspConfig prefix and uppercasing the rest of the attribute name.
# To set the SERVER variable, set the ltspConfigServer attribute.
#
# Some LDAP schema should be created with all the relevant
# configuration settings.  Something like this should work:
# 
# objectclass ( 1.1.2.2 NAME &#39;ltspClientAux&#39;
#     SUP top
#     AUXILIARY
#     MAY ( ltspConfigServer $ ltsConfigSound $ ... )

LDAPSERVER=$(debian-edu-ldapserver)
if [ &quot;$LDAPSERVER&quot; ] ; then
    LDAPBASE=$(debian-edu-ldapserver -b)
    for MAC in $(LANG=C ifconfig |grep -i hwaddr| awk &#39;{print $5}&#39;|sort -u) ; do
        filter=&quot;(|(dhcpHWAddress=ethernet $MAC)(macAddress=$MAC))&quot;
        ldapsearch -h &quot;$LDAPSERVER&quot; -b &quot;$LDAPBASE&quot; -v -x &quot;$filter&quot; | \
            grep &#39;^ltspConfig&#39; | while read attr value ; do
            # Remove prefix and convert to upper case
            attr=$(echo $attr | sed &#39;s/^ltspConfig//i&#39; | tr a-z A-Z)
            # bass value on to clients
            eval &quot;$attr=$value; export $attr&quot;
        done
    done
fi
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;I&#39;m not sure this shell construction will work, because I suspect
the while block might end up in a subshell causing the variables set
there to not show up in ltsp-config, but if that is the case I am sure
the code can be restructured to make sure the variables are passed on.
I expect that can be solved with some testing. :)&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing this for Debian Edu,
please contact us on debian-edu@lists.debian.org.&lt;/p&gt;

&lt;p&gt;Update 2010-07-17: I am aware of another effort to store LTSP
configuration in LDAP that was created around year 2000 by
&lt;a href=&quot;http://www.pcxperience.com/thinclient/documentation/ldap.html&quot;&gt;PC
Xperience, Inc., 2000&lt;/a&gt;.  I found its
&lt;a href=&quot;http://people.redhat.com/alikins/ltsp/ldap/&quot;&gt;files&lt;/a&gt; on a
personal home page over at redhat.com.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>jXplorer, a very nice LDAP GUI</title>
                <link>http://people.skolelinux.org/pere/blog/jXplorer__a_very_nice_LDAP_GUI.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/jXplorer__a_very_nice_LDAP_GUI.html</guid>
                <pubDate>Fri, 9 Jul 2010 12:55:00 +0200</pubDate>
                <description>&lt;p&gt;Since
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/LUMA__a_very_nice_LDAP_GUI.html&quot;&gt;my
last post&lt;/a&gt; about available LDAP tools in Debian, I was told about a
LDAP GUI that is even better than luma.  The java application
&lt;a href=&quot;http://jxplorer.org/&quot;&gt;jXplorer&lt;/a&gt; is claimed to be capable of
moving LDAP objects and subtrees using drag-and-drop, and can
authenticate using Kerberos.  I have only tested the Kerberos
authentication, but do not have a LDAP setup allowing me to rewrite
LDAP with my test user yet.  It is
&lt;a href=&quot;http://packages.qa.debian.org/j/jxplorer.html&quot;&gt;available in
Debian&lt;/a&gt; testing and unstable at the moment.  The only problem I
have with it is how it handle errors.  If something go wrong, its
non-intuitive behaviour require me to go through some query work list
and remove the failing query.  Nothing big, but very annoying.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Lenny-&gt;Squeeze upgrades, apt vs aptitude with the Gnome desktop</title>
                <link>http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades__apt_vs_aptitude_with_the_Gnome_desktop.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades__apt_vs_aptitude_with_the_Gnome_desktop.html</guid>
                <pubDate>Sat, 3 Jul 2010 23:55:00 +0200</pubDate>
                <description>&lt;p&gt;Here is a short update on my &lt;a
href=&quot;http://people.skolelinux.org/~pere/debian-upgrade-testing/&quot;&gt;my
Debian Lenny-&gt;Squeeze upgrade testing&lt;/a&gt;.  Here is a summary of the
difference for Gnome when it is upgraded by apt-get and aptitude.  I&#39;m
not reporting the status for KDE, because the upgrade crashes when
aptitude try because of missing conflicts
(&lt;a href=&quot;http://bugs.debian.org/584861&quot;&gt;#584861&lt;/a&gt; and
&lt;a href=&quot;http://bugs.debian.org/585716&quot;&gt;#585716&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;At the end of the upgrade test script, dpkg -l is executed to get a
complete list of the installed packages.  Based on this I see these
differences when I did a test run today.  As usual, I do not really
know what the correct set of packages would be, but thought it best to
publish the difference.&lt;/p&gt;

&lt;p&gt;Installed using apt-get, missing with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  at-spi cpp-4.3 finger gnome-spell gstreamer0.10-gnomevfs
  libatspi1.0-0 libcupsys2 libeel2-data libgail-common libgdl-1-common
  libgnomeprint2.2-data libgnomeprintui2.2-common libgnomevfs2-bin
  libgtksourceview-common libpt-1.10.10-plugins-alsa
  libpt-1.10.10-plugins-v4l libservlet2.4-java libxalan2-java
  libxerces2-java openoffice.org-writer2latex openssl-blacklist p7zip
  python-4suite-xml python-eggtrayicon python-gtkhtml2
  python-gtkmozembed svgalibg1 xserver-xephyr zip
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using apt-get, removed with aptitude&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  bluez-utils dhcdbd djvulibre-desktop epiphany-gecko
  gnome-app-install gnome-mount gnome-vfs-obexftp gnome-volume-manager
  libao2 libavahi-compat-libdnssd1 libavahi-core5 libbind9-50
  libbluetooth2 libcamel1.2-11 libcdio7 libcucul0 libcurl3
  libdirectfb-1.0-0 libdvdread3 libedata-cal1.2-6 libedataserver1.2-9
  libeel2-2.20 libepc-1.0-1 libepc-ui-1.0-1 libexchange-storage1.2-3
  libfaad0 libgd2-noxpm libgda3-3 libgda3-common libggz2 libggzcore9
  libggzmod4 libgksu1.2-0 libgksuui1.0-1 libgmyth0 libgnome-desktop-2
  libgnome-pilot2 libgnomecups1.0-1 libgnomeprint2.2-0
  libgnomeprintui2.2-0 libgpod3 libgraphviz4 libgtkhtml2-0
  libgtksourceview1.0-0 libgucharmap6 libhesiod0 libicu38 libisccc50
  libisccfg50 libiw29 libkpathsea4 libltdl3 liblwres50 libmagick++10
  libmagick10 libmalaga7 libmtp7 libmysqlclient15off libnautilus-burn4
  libneon27 libnm-glib0 libnm-util0 libopal-2.2 libosp5
  libparted1.8-10 libpisock9 libpisync1 libpoppler-glib3 libpoppler3
  libpt-1.10.10 libraw1394-8 libsensors3 libsmbios2 libsoup2.2-8
  libssh2-1 libsuitesparse-3.1.0 libswfdec-0.6-90 libtalloc1
  libtotem-plparser10 libtrackerclient0 libvoikko1 libxalan2-java-gcj
  libxerces2-java-gcj libxklavier12 libxtrap6 libxxf86misc1 libzephyr3
  mysql-common swfdec-gnome totem-gstreamer wodim
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, missing with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  gnome gnome-desktop-environment hamster-applet python-gnomeapplet
  python-gnomekeyring python-wnck rhythmbox-plugins xorg
  xserver-xorg-input-all xserver-xorg-input-evdev
  xserver-xorg-input-kbd xserver-xorg-input-mouse
  xserver-xorg-input-synaptics xserver-xorg-video-all
  xserver-xorg-video-apm xserver-xorg-video-ark xserver-xorg-video-ati
  xserver-xorg-video-chips xserver-xorg-video-cirrus
  xserver-xorg-video-dummy xserver-xorg-video-fbdev
  xserver-xorg-video-glint xserver-xorg-video-i128
  xserver-xorg-video-i740 xserver-xorg-video-mach64
  xserver-xorg-video-mga xserver-xorg-video-neomagic
  xserver-xorg-video-nouveau xserver-xorg-video-nv
  xserver-xorg-video-r128 xserver-xorg-video-radeon
  xserver-xorg-video-radeonhd xserver-xorg-video-rendition
  xserver-xorg-video-s3 xserver-xorg-video-s3virge
  xserver-xorg-video-savage xserver-xorg-video-siliconmotion
  xserver-xorg-video-sis xserver-xorg-video-sisusb
  xserver-xorg-video-tdfx xserver-xorg-video-tga
  xserver-xorg-video-trident xserver-xorg-video-tseng
  xserver-xorg-video-vesa xserver-xorg-video-vmware
  xserver-xorg-video-voodoo
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Installed using aptitude, removed with apt-get&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;
  deskbar-applet xserver-xorg xserver-xorg-core
  xserver-xorg-input-wacom xserver-xorg-video-intel
  xserver-xorg-video-openchrome
&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;I was told on IRC that the xorg-xserver package was
&lt;a href=&quot;http://git.debian.org/?p=pkg-xorg/xserver/xorg-server.git;a=commit;h=9c8080d06c457932d3bfec021c69ac000aa60120&quot;&gt;changed
in git&lt;/a&gt; today to try to get apt-get to not remove xorg completely.
No idea when it hits Squeeze, but when it does I hope it will reduce
the difference somewhat.
</description>
        </item>
        
        <item>
                <title>Caching password, user and group on a roaming Debian laptop</title>
                <link>http://people.skolelinux.org/pere/blog/Caching_password__user_and_group_on_a_roaming_Debian_laptop.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Caching_password__user_and_group_on_a_roaming_Debian_laptop.html</guid>
                <pubDate>Thu, 1 Jul 2010 11:40:00 +0200</pubDate>
                <description>&lt;p&gt;For a laptop, centralized user directories and password checking is
a bit troubling.  Laptops are typically used also when not connected
to the network, and it is vital for a user to be able to log in or
unlock the screen saver also when a central server is unavailable.
This is possible by caching passwords and directory information (user
and group attributes) locally, and the packages to do so are available
in Debian.  Here follow two recipes to set this up in Debian/Squeeze.
It is also possible to set up in Debian/Lenny, but require more manual
setup there because pam-auth-update is missing in Lenny.&lt;/p&gt;

&lt;h2&gt;LDAP/Kerberos + nscd + libpam-ccreds + libpam-mklocaluser/pam_mkhomedir&lt;/h2&gt;

This is the traditional method with a twist.  The password caching is
provided by libpam-ccreds (version 10-4 or later is needed on
Squeeze), and the directory caching is done by nscd.  The directory
lookup and password checking is done using LDAP.  If one want to use
Kerberos for password checking the libpam-ldapd package can be
replaced with libpam-krb5 or libpam-heimdal.  If one is happy having a
local home directory with the path listed in LDAP, one can use the
pam_mkhomedir module from pam-modules to make this happen instead of
using libpam-mklocaluser.  A setup for pam-auth-update to enable
pam_mkhomedir will have to be written until a fix for
&lt;a href=&quot;http://bugs.debian.org/568577&quot;&gt;bug #568577&lt;/a&gt; is in the
archive.  Because I believe it is a bad idea to have local home
directories using misleading paths like /site/server/partition/, I
prefer to create a local user with the home directory in /home/.  This
is done using the libpam-mklocaluser package.&lt;/p&gt;

&lt;p&gt;These packages need to be installed and configured&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
libnss-ldapd libpam-ldapd nscd libpam-ccreds libpam-mklocaluser
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The ldapd packages will ask for LDAP connection information, and
one have to fill in the values that fits ones own site.  Make sure the
PAM part uses encrypted connections, to make sure the password is not
sent in clear text to the LDAP server.  I&#39;ve been unable to get TLS
certificate checking for a self signed certificate working, which make
LDAP authentication unsafe for Debian Edu (nslcd is not checking if it
is talking to the correct LDAP server), and very much welcome feedback
on how to get this working.&lt;/p&gt;

&lt;p&gt;Because nscd do not have a default configuration fit for offline
caching until &lt;a href=&quot;http://bugs.debian.org/485282&quot;&gt;bug #485282&lt;/a&gt;
is fixed, this configuration should be used instead of the one
currently in /etc/nscd.conf.  The changes are in the fields
reload-count and positive-time-to-live, and is based on the
instructions I found in the
&lt;a href=&quot;http://www.flyn.org/laptopldap/&quot;&gt;LDAP for Mobile Laptops&lt;/a&gt;
instructions by Flyn Computing.&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
        debug-level             0
        reload-count            unlimited
        paranoia                no

        enable-cache            passwd          yes
        positive-time-to-live   passwd          2592000
        negative-time-to-live   passwd          20
        suggested-size          passwd          211
        check-files             passwd          yes
        persistent              passwd          yes
        shared                  passwd          yes
        max-db-size             passwd          33554432
        auto-propagate          passwd          yes

        enable-cache            group           yes
        positive-time-to-live   group           2592000
        negative-time-to-live   group           20
        suggested-size          group           211
        check-files             group           yes
        persistent              group           yes
        shared                  group           yes
        max-db-size             group           33554432
        auto-propagate          group           yes

        enable-cache            hosts           no
        positive-time-to-live   hosts           2592000
        negative-time-to-live   hosts           20
        suggested-size          hosts           211
        check-files             hosts           yes
        persistent              hosts           yes
        shared                  hosts           yes
        max-db-size             hosts           33554432

        enable-cache            services        yes
        positive-time-to-live   services        2592000
        negative-time-to-live   services        20
        suggested-size          services        211
        check-files             services        yes
        persistent              services        yes
        shared                  services        yes
        max-db-size             services        33554432
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;While we wait for a mechanism to update /etc/nsswitch.conf
automatically like the one provided in
&lt;a href=&quot;http://bugs.debian.org/496915&quot;&gt;bug #496915&lt;/a&gt;, the file
content need to be manually replaced to ensure LDAP is used as the
directory service on the machine.  /etc/nsswitch.conf should normally
look like this:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
passwd:         files ldap
group:          files ldap
shadow:         files ldap
hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4
networks:       files
protocols:      files
services:       files
ethers:         files
rpc:            files
netgroup:       files ldap
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The important parts are that ldap is listed last for passwd, group,
shadow and netgroup.&lt;/p&gt;

&lt;p&gt;With these changes in place, any user in LDAP will be able to log
in locally on the machine using for example kdm, get a local home
directory created and have the password as well as user and group
attributes cached.

&lt;h2&gt;LDAP/Kerberos + nss-updatedb + libpam-ccreds +
  libpam-mklocaluser/pam_mkhomedir&lt;/h2&gt;

&lt;p&gt;Because nscd have had its share of problems, and seem to have
problems doing proper caching, I&#39;ve seen suggestions and recipes to
use nss-updatedb to copy parts of the LDAP database locally when the
LDAP database is available.  I have not tested such setup, because I
discovered sssd.&lt;/p&gt;

&lt;h2&gt;LDAP/Kerberos + sssd + libpam-mklocaluser&lt;/h2&gt;

&lt;p&gt;A more flexible and robust setup than the nscd combination
mentioned earlier that has shown up recently, is the
&lt;a href=&quot;https://fedorahosted.org/sssd/&quot;&gt;sssd&lt;/a&gt; package from Redhat.
It is part of the &lt;a href=&quot;http://www.freeipa.org/&quot;&gt;FreeIPA&lt;/A&gt; project
to provide a Active Directory like directory service for Linux
machines.  The sssd system combines the caching of passwords and user
information into one package, and remove the need for nscd and
libpam-ccreds.  It support LDAP and Kerberos, but not NIS.  Version
1.2 do not support netgroups, but it is said that it will support this
in version 1.5 expected to show up later in 2010.  Because the
&lt;a href=&quot;http://packages.qa.debian.org/s/sssd.html&quot;&gt;sssd package&lt;/a&gt;
was missing in Debian, I ended up co-maintaining it with Werner, and
version 1.2 is now in testing.

&lt;p&gt;These packages need to be installed and configured to get the
roaming setup I want&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
libpam-sss libnss-sss libpam-mklocaluser
&lt;/pre&gt;&lt;/blockquote&gt;

The complete setup of sssd is done by editing/creating
&lt;tt&gt;/etc/sssd/sssd.conf&lt;/tt&gt;.

&lt;blockquote&gt;&lt;pre&gt;
[sssd]
config_file_version = 2
reconnection_retries = 3
sbus_timeout = 30
services = nss, pam
domains = INTERN

[nss]
filter_groups = root
filter_users = root
reconnection_retries = 3

[pam]
reconnection_retries = 3

[domain/INTERN]
enumerate = false
cache_credentials = true

id_provider = ldap
auth_provider = ldap
chpass_provider = ldap

ldap_uri = ldap://ldap
ldap_search_base = dc=skole,dc=skolelinux,dc=no
ldap_tls_reqcert = never
ldap_tls_cacert = /etc/ssl/certs/ca-certificates.crt
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;I got the same problem here with certificate checking.  Had to set
&quot;ldap_tls_reqcert = never&quot; to get it working.&lt;/p&gt;

&lt;p&gt;With the libnss-sss package in testing at the moment, the
nsswitch.conf file is update automatically, so there is no need to
modify it manually.&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing this for Debian Edu,
please contact us on debian-edu@lists.debian.org.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>LUMA, a very nice LDAP GUI</title>
                <link>http://people.skolelinux.org/pere/blog/LUMA__a_very_nice_LDAP_GUI.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/LUMA__a_very_nice_LDAP_GUI.html</guid>
                <pubDate>Mon, 28 Jun 2010 00:30:00 +0200</pubDate>
                <description>&lt;p&gt;The last few days I have been looking into the status of the LDAP
directory in Debian Edu, and in the process I started to miss a GUI
tool to browse the LDAP tree.  The only one I was able to find in
Debian/Squeeze and Lenny is
&lt;a href=&quot;http://luma.sourceforge.net/&quot;&gt;LUMA&lt;/a&gt;, which has proved to
be a great tool to get a overview of the current LDAP directory
populated by default in Skolelinux.  Thanks to it, I have been able to
find empty and obsolete subtrees, misplaced objects and duplicate
objects.  It will be installed by default in Debian/Squeeze.  If you
are working with LDAP, give it a go. :)&lt;/p&gt;

&lt;p&gt;I did notice one problem with it I have not had time to report to
the BTS yet.  There is no .desktop file in the package, so the tool do
not show up in the Gnome and KDE menus, but only deep down in in the
Debian submenu in KDE.  I hope that can be fixed before Squeeze is
released.&lt;/p&gt;

&lt;p&gt;I have not yet been able to get it to modify the tree yet.  I would
like to move objects and remove subtrees directly in the GUI, but have
not found a way to do that with LUMA yet.  So in the mean time, I use
&lt;a href=&quot;http://www.lichteblau.com/ldapvi/&quot;&gt;ldapvi&lt;/a&gt; for that.&lt;/p&gt;

&lt;p&gt;If you have tips on other GUI tools for LDAP that might be useful
in Debian Edu, please contact us on debian-edu@lists.debian.org.&lt;/p&gt;

&lt;p&gt;Update 2010-06-29: Ross Reedstrom tipped us about the
&lt;a href=&quot;http://packages.qa.debian.org/g/gq.html&quot;&gt;gq&lt;/a&gt; package as a
useful GUI alternative.  It seem like a good tool, but is unmaintained
in Debian and got a RC bug keeping it out of Squeeze.  Unless that
changes, it will not be an option for Debian Edu based on Squeeze.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Idea for a change to LDAP schemas allowing DNS and DHCP info to be combined into one object</title>
                <link>http://people.skolelinux.org/pere/blog/Idea_for_a_change_to_LDAP_schemas_allowing_DNS_and_DHCP_info_to_be_combined_into_one_object.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Idea_for_a_change_to_LDAP_schemas_allowing_DNS_and_DHCP_info_to_be_combined_into_one_object.html</guid>
                <pubDate>Thu, 24 Jun 2010 00:35:00 +0200</pubDate>
                <description>&lt;p&gt;A while back, I
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html&quot;&gt;complained
about the fact&lt;/a&gt; that it is not possible with the provided schemas
for storing DNS and DHCP information in LDAP to combine the two sets
of information into one LDAP object representing a computer.&lt;/p&gt;

&lt;p&gt;In the mean time, I discovered that a simple fix would be to make
the dhcpHost object class auxiliary, to allow it to be combined with
the dNSDomain object class, and thus forming one object for one
computer when storing both DHCP and DNS information in LDAP.&lt;/p&gt;

&lt;p&gt;If I understand this correctly, it is not safe to do this change
without also changing the assigned number for the object class, and I
do not know enough about LDAP schema design to do that properly for
Debian Edu.&lt;/p&gt;

&lt;p&gt;Anyway, for future reference, this is how I believe we could change
the
&lt;a href=&quot;http://tools.ietf.org/html/draft-ietf-dhc-ldap-schema-00&quot;&gt;DHCP
schema&lt;/a&gt; to solve at least part of the problem with the LDAP schemas
available today from IETF.&lt;/p&gt;

&lt;pre&gt;
--- dhcp.schema    (revision 65192)
+++ dhcp.schema    (working copy)
@@ -376,7 +376,7 @@
 objectclass ( 2.16.840.1.113719.1.203.6.6
        NAME &#39;dhcpHost&#39;
        DESC &#39;This represents information about a particular client&#39;
-       SUP top
+       SUP top AUXILIARY
        MUST cn
        MAY  (dhcpLeaseDN $ dhcpHWAddress $ dhcpOptionsDN $ dhcpStatements $ dhcpComments $ dhcpOption)
        X-NDS_CONTAINMENT (&#39;dhcpService&#39; &#39;dhcpSubnet&#39; &#39;dhcpGroup&#39;) )
&lt;/pre&gt;

&lt;p&gt;I very much welcome clues on how to do this properly for Debian
Edu/Squeeze.  We provide the DHCP schema in our debian-edu-config
package, and should thus be free to rewrite it as we see fit.&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing this for Debian Edu,
please contact us on debian-edu@lists.debian.org.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Calling tasksel like the installer, while still getting useful output</title>
                <link>http://people.skolelinux.org/pere/blog/Calling_tasksel_like_the_installer__while_still_getting_useful_output.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Calling_tasksel_like_the_installer__while_still_getting_useful_output.html</guid>
                <pubDate>Wed, 16 Jun 2010 14:55:00 +0200</pubDate>
                <description>&lt;p&gt;A few times I have had the need to simulate the way tasksel
installs packages during the normal debian-installer run.  Until now,
I have ended up letting tasksel do the work, with the annoying problem
of not getting any feedback at all when something fails (like a
conffile question from dpkg or a download that fails), using code like
this:

&lt;blockquote&gt;&lt;pre&gt;
export DEBIAN_FRONTEND=noninteractive
tasksel --new-install
&lt;/pre&gt;&lt;/blockquote&gt;

This would invoke tasksel, let its automatic task selection pick the
tasks to install, and continue to install the requested tasks without
any output what so ever.

Recently I revisited this problem while working on the automatic
package upgrade testing, because tasksel would some times hang without
any useful feedback, and I want to see what is going on when it
happen.  Then it occured to me, I can parse the output from tasksel
when asked to run in test mode, and use that aptitude command line
printed by tasksel then to simulate the tasksel run.  I ended up using
code like this:

&lt;blockquote&gt;&lt;pre&gt;
export DEBIAN_FRONTEND=noninteractive
cmd=&quot;$(in_target tasksel -t --new-install | sed &#39;s/debconf-apt-progress -- //&#39;)&quot;
$cmd
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The content of $cmd is typically something like &quot;&lt;tt&gt;aptitude -q
--without-recommends -o APT::Install-Recommends=no -y install
~t^desktop$ ~t^gnome-desktop$ ~t^laptop$ ~pstandard ~prequired
~pimportant&lt;/tt&gt;&quot;, which will install the gnome desktop task, the
laptop task and all packages with priority standard , required and
important, just like tasksel would have done it during
installation.&lt;/p&gt;

&lt;p&gt;A better approach is probably to extend tasksel to be able to
install packages without using debconf-apt-progress, for use cases
like this.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Officeshots taking shape</title>
                <link>http://people.skolelinux.org/pere/blog/Officeshots_taking_shape.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Officeshots_taking_shape.html</guid>
                <pubDate>Sun, 13 Jun 2010 11:40:00 +0200</pubDate>
                <description>&lt;p&gt;For those of us caring about document exchange and
interoperability, &lt;a href=&quot;http://www.officeshots.org/&quot;&gt;OfficeShots&lt;/a&gt;
is a great service.  It is to ODF documents what
&lt;a href=&quot;http://browsershots.org/&quot;&gt;BrowserShots&lt;/a&gt; is for web
pages.&lt;/p&gt;

&lt;p&gt;A while back, I was contacted by Knut Yrvin at the part of Nokia
that used to be Trolltech, who wanted to help the OfficeShots project
and wondered if the University of Oslo where I work would be
interested in supporting the project.  I helped him to navigate his
request to the right people at work, and his request was answered with
a spot in the machine room with power and network connected, and Knut
arranged funding for a machine to fill the spot.  The machine is
administrated by the OfficeShots people, so I do not have daily
contact with its progress, and thus from time to time check back to
see how the project is doing.&lt;/p&gt;

&lt;p&gt;Today I had a look, and was happy to see that the Dell box in our
machine room now is the host for several virtual machines running as
OfficeShots factories, and the project is able to render ODF documents
in 17 different document processing implementation on Linux and
Windows.  This is great.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Lenny-&gt;Squeeze upgrades, removals by apt and aptitude</title>
                <link>http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades__removals_by_apt_and_aptitude.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades__removals_by_apt_and_aptitude.html</guid>
                <pubDate>Sun, 13 Jun 2010 09:05:00 +0200</pubDate>
                <description>&lt;p&gt;My
&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Automatic_upgrade_testing_from_Lenny_to_Squeeze.html&quot;&gt;testing
of Debian upgrades&lt;/a&gt; from Lenny to Squeeze continues, and I&#39;ve
finally made the upgrade logs available from
&lt;a href=&quot;http://people.skolelinux.org/pere/debian-upgrade-testing/&quot;&gt;http://people.skolelinux.org/pere/debian-upgrade-testing/&lt;/a&gt;.
I am now testing dist-upgrade of Gnome and KDE in a chroot using both
apt and aptitude, and found their differences interesting.  This time
I will only focus on their removal plans.&lt;/p&gt;

&lt;p&gt;After installing a Gnome desktop and the laptop task, apt-get wants
to remove 72 packages when dist-upgrading from Lenny to Squeeze.  The
surprising part is that it want to remove xorg and all
xserver-xorg-video* drivers.  Clearly not a good choice, but I am not
sure why.  When asking aptitude to do the same, it want to remove 129
packages, but most of them are library packages I suspect are no
longer needed.  Both of them want to remove bluetooth packages, which
I do not know.  Perhaps these bluetooth packages are obsolete?&lt;/p&gt;

&lt;p&gt;For KDE, apt-get want to remove 82 packages, among them kdebase
which seem like a bad idea and xorg the same way as with Gnome. Asking
aptitude for the same, it wants to remove 192 packages, none which are
too surprising.&lt;/p&gt;

&lt;p&gt;I guess the removal of xorg during upgrades should be investigated
and avoided, and perhaps others as well.  Here are the complete list
of planned removals.  The complete logs is available from the URL
above.  Note if you want to repeat these tests, that the upgrade test
for kde+apt-get hung in the tasksel setup because of dpkg asking
conffile questions.  No idea why.  I worked around it by using
&#39;&lt;tt&gt;echo &gt;&gt; /proc/&lt;em&gt;pidofdpkg&lt;/em&gt;/fd/0&lt;/tt&gt;&#39; to tell dpkg to
continue.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;apt-get gnome 72&lt;/b&gt;
&lt;br&gt;bluez-gnome cupsddk-drivers deskbar-applet gnome
  gnome-desktop-environment gnome-network-admin gtkhtml3.14
  iceweasel-gnome-support libavcodec51 libdatrie0 libgdl-1-0
  libgnomekbd2 libgnomekbdui2 libmetacity0 libslab0 libxcb-xlib0
  nautilus-cd-burner python-gnome2-desktop python-gnome2-extras
  serpentine swfdec-mozilla update-manager xorg xserver-xorg
  xserver-xorg-core xserver-xorg-input-all xserver-xorg-input-evdev
  xserver-xorg-input-kbd xserver-xorg-input-mouse
  xserver-xorg-input-synaptics xserver-xorg-input-wacom
  xserver-xorg-video-all xserver-xorg-video-apm xserver-xorg-video-ark
  xserver-xorg-video-ati xserver-xorg-video-chips
  xserver-xorg-video-cirrus xserver-xorg-video-cyrix
  xserver-xorg-video-dummy xserver-xorg-video-fbdev
  xserver-xorg-video-glint xserver-xorg-video-i128
  xserver-xorg-video-i740 xserver-xorg-video-imstt
  xserver-xorg-video-intel xserver-xorg-video-mach64
  xserver-xorg-video-mga xserver-xorg-video-neomagic
  xserver-xorg-video-nsc xserver-xorg-video-nv
  xserver-xorg-video-openchrome xserver-xorg-video-r128
  xserver-xorg-video-radeon xserver-xorg-video-radeonhd
  xserver-xorg-video-rendition xserver-xorg-video-s3
  xserver-xorg-video-s3virge xserver-xorg-video-savage
  xserver-xorg-video-siliconmotion xserver-xorg-video-sis
  xserver-xorg-video-sisusb xserver-xorg-video-tdfx
  xserver-xorg-video-tga xserver-xorg-video-trident
  xserver-xorg-video-tseng xserver-xorg-video-v4l
  xserver-xorg-video-vesa xserver-xorg-video-vga
  xserver-xorg-video-vmware xserver-xorg-video-voodoo xulrunner-1.9
  xulrunner-1.9-gnome-support&lt;/p&gt;

&lt;p&gt;&lt;b&gt;aptitude gnome 129&lt;/b&gt;

&lt;br&gt;bluez-gnome bluez-utils cpp-4.3 cupsddk-drivers dhcdbd
  djvulibre-desktop finger gnome-app-install gnome-mount
  gnome-network-admin gnome-spell gnome-vfs-obexftp
  gnome-volume-manager gstreamer0.10-gnomevfs gtkhtml3.14 libao2
  libavahi-compat-libdnssd1 libavahi-core5 libavcodec51 libbluetooth2
  libcamel1.2-11 libcdio7 libcucul0 libcupsys2 libcurl3 libdatrie0
  libdirectfb-1.0-0 libdvdread3 libedataserver1.2-9 libeel2-2.20
  libeel2-data libepc-1.0-1 libepc-ui-1.0-1 libfaad0 libgail-common
  libgd2-noxpm libgda3-3 libgda3-common libgdl-1-0 libgdl-1-common
  libggz2 libggzcore9 libggzmod4 libgksu1.2-0 libgksuui1.0-1 libgmyth0
  libgnomecups1.0-1 libgnomekbd2 libgnomekbdui2 libgnomeprint2.2-0
  libgnomeprint2.2-data libgnomeprintui2.2-0 libgnomeprintui2.2-common
  libgnomevfs2-bin libgpod3 libgraphviz4 libgtkhtml2-0
  libgtksourceview-common libgtksourceview1.0-0 libgucharmap6
  libhesiod0 libicu38 libiw29 libkpathsea4 libltdl3 libmagick++10
  libmagick10 libmalaga7 libmetacity0 libmtp7 libmysqlclient15off
  libnautilus-burn4 libneon27 libnm-glib0 libnm-util0 libopal-2.2
  libosp5 libparted1.8-10 libpoppler-glib3 libpoppler3 libpt-1.10.10
  libpt-1.10.10-plugins-alsa libpt-1.10.10-plugins-v4l libraw1394-8
  libsensors3 libslab0 libsmbios2 libsoup2.2-8 libssh2-1
  libsuitesparse-3.1.0 libswfdec-0.6-90 libtalloc1 libtotem-plparser10
  libtrackerclient0 libxalan2-java libxalan2-java-gcj libxcb-xlib0
  libxerces2-java libxerces2-java-gcj libxklavier12 libxtrap6
  libxxf86misc1 libzephyr3 mysql-common nautilus-cd-burner
  openoffice.org-writer2latex openssl-blacklist p7zip
  python-4suite-xml python-eggtrayicon python-gnome2-desktop
  python-gnome2-extras python-gtkhtml2 python-gtkmozembed
  python-numeric python-sexy serpentine svgalibg1 swfdec-gnome
  swfdec-mozilla totem-gstreamer update-manager wodim
  xserver-xorg-video-cyrix xserver-xorg-video-imstt
  xserver-xorg-video-nsc xserver-xorg-video-v4l xserver-xorg-video-vga
  zip&lt;/p&gt;

&lt;p&gt;&lt;b&gt;apt-get kde 82&lt;/b&gt;

&lt;br&gt;cupsddk-drivers karm kaudiocreator kcoloredit kcontrol kde kde-core
  kdeaddons kdeartwork kdebase kdebase-bin kdebase-bin-kde3
  kdebase-kio-plugins kdesktop kdeutils khelpcenter kicker
  kicker-applets knewsticker kolourpaint konq-plugins konqueror korn
  kpersonalizer kscreensaver ksplash libavcodec51 libdatrie0 libkiten1
  libxcb-xlib0 quanta superkaramba texlive-base-bin xorg xserver-xorg
  xserver-xorg-core xserver-xorg-input-all xserver-xorg-input-evdev
  xserver-xorg-input-kbd xserver-xorg-input-mouse
  xserver-xorg-input-synaptics xserver-xorg-input-wacom
  xserver-xorg-video-all xserver-xorg-video-apm xserver-xorg-video-ark
  xserver-xorg-video-ati xserver-xorg-video-chips
  xserver-xorg-video-cirrus xserver-xorg-video-cyrix
  xserver-xorg-video-dummy xserver-xorg-video-fbdev
  xserver-xorg-video-glint xserver-xorg-video-i128
  xserver-xorg-video-i740 xserver-xorg-video-imstt
  xserver-xorg-video-intel xserver-xorg-video-mach64
  xserver-xorg-video-mga xserver-xorg-video-neomagic
  xserver-xorg-video-nsc xserver-xorg-video-nv
  xserver-xorg-video-openchrome xserver-xorg-video-r128
  xserver-xorg-video-radeon xserver-xorg-video-radeonhd
  xserver-xorg-video-rendition xserver-xorg-video-s3
  xserver-xorg-video-s3virge xserver-xorg-video-savage
  xserver-xorg-video-siliconmotion xserver-xorg-video-sis
  xserver-xorg-video-sisusb xserver-xorg-video-tdfx
  xserver-xorg-video-tga xserver-xorg-video-trident
  xserver-xorg-video-tseng xserver-xorg-video-v4l
  xserver-xorg-video-vesa xserver-xorg-video-vga
  xserver-xorg-video-vmware xserver-xorg-video-voodoo xulrunner-1.9&lt;/p&gt;

&lt;p&gt;&lt;b&gt;aptitude kde 192&lt;/b&gt;
&lt;br&gt;bluez-utils cpp-4.3 cupsddk-drivers cvs dcoprss dhcdbd
  djvulibre-desktop dosfstools eyesapplet fifteenapplet finger gettext
  ghostscript-x imlib-base imlib11 indi kandy karm kasteroids
  kaudiocreator kbackgammon kbstate kcoloredit kcontrol kcron kdat
  kdeadmin-kfile-plugins kdeartwork-misc kdeartwork-theme-window
  kdebase-bin-kde3 kdebase-kio-plugins kdeedu-data
  kdegraphics-kfile-plugins kdelirc kdemultimedia-kappfinder-data
  kdemultimedia-kfile-plugins kdenetwork-kfile-plugins
  kdepim-kfile-plugins kdepim-kio-plugins kdeprint kdesktop kdessh
  kdict kdnssd kdvi kedit keduca kenolaba kfax kfaxview kfouleggs
  kghostview khelpcenter khexedit kiconedit kitchensync klatin
  klickety kmailcvt kmenuedit kmid kmilo kmoon kmrml kodo kolourpaint
  kooka korn kpager kpdf kpercentage kpf kpilot kpoker kpovmodeler
  krec kregexpeditor ksayit ksim ksirc ksirtet ksmiletris ksmserver
  ksnake ksokoban ksplash ksvg ksysv ktip ktnef kuickshow kverbos
  kview kviewshell kvoctrain kwifimanager kwin kwin4 kworldclock
  kxsldbg libakode2 libao2 libarts1-akode libarts1-audiofile
  libarts1-mpeglib libarts1-xine libavahi-compat-libdnssd1
  libavahi-core5 libavc1394-0 libavcodec51 libbluetooth2
  libboost-python1.34.1 libcucul0 libcurl3 libcvsservice0 libdatrie0
  libdirectfb-1.0-0 libdjvulibre21 libdvdread3 libfaad0 libfreebob0
  libgail-common libgd2-noxpm libgraphviz4 libgsmme1c2a libgtkhtml2-0
  libicu38 libiec61883-0 libindex0 libiw29 libk3b3 libkcal2b libkcddb1
  libkdeedu3 libkdepim1a libkgantt0 libkiten1 libkleopatra1 libkmime2
  libkpathsea4 libkpimexchange1 libkpimidentities1 libkscan1
  libksieve0 libktnef1 liblockdev1 libltdl3 libmagick10 libmimelib1c2a
  libmozjs1d libmpcdec3 libneon27 libnm-util0 libopensync0 libpisock9
  libpoppler-glib3 libpoppler-qt2 libpoppler3 libraw1394-8 libsmbios2
  libssh2-1 libsuitesparse-3.1.0 libtalloc1 libtiff-tools
  libxalan2-java libxalan2-java-gcj libxcb-xlib0 libxerces2-java
  libxerces2-java-gcj libxtrap6 mpeglib networkstatus
  openoffice.org-writer2latex pmount poster psutils quanta quanta-data
  superkaramba svgalibg1 tex-common texlive-base texlive-base-bin
  texlive-common texlive-doc-base texlive-fonts-recommended
  xserver-xorg-video-cyrix xserver-xorg-video-imstt
  xserver-xorg-video-nsc xserver-xorg-video-v4l xserver-xorg-video-vga
  xulrunner-1.9&lt;/p&gt;

</description>
        </item>
        
        <item>
                <title>Automatic upgrade testing from Lenny to Squeeze</title>
                <link>http://people.skolelinux.org/pere/blog/Automatic_upgrade_testing_from_Lenny_to_Squeeze.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Automatic_upgrade_testing_from_Lenny_to_Squeeze.html</guid>
                <pubDate>Fri, 11 Jun 2010 22:50:00 +0200</pubDate>
                <description>&lt;p&gt;The last few days I have done some upgrade testing in Debian, to
see if the upgrade from Lenny to Squeeze will go smoothly.  A few bugs
have been discovered and reported in the process
(&lt;a href=&quot;http://bugs.debian.org/585410&quot;&gt;#585410&lt;/a&gt; in nagios3-cgi,
&lt;a href=&quot;http://bugs.debian.org/584879&quot;&gt;#584879&lt;/a&gt; already fixed in
enscript and &lt;a href=&quot;http://bugs.debian.org/584861&quot;&gt;#584861&lt;/a&gt; in
kdebase-workspace-data), and to get a more regular testing going on, I
am working on a script to automate the test.&lt;/p&gt;

&lt;p&gt;The idea is to create a Lenny chroot and use tasksel to install a
Gnome or KDE desktop installation inside the chroot before upgrading
it.  To ensure no services are started in the chroot, a policy-rc.d
script is inserted.  To make sure tasksel believe it is to install a
desktop on a laptop, the tasksel tests are replaced in the chroot
(only acceptable because this is a throw-away chroot).&lt;/p&gt;

&lt;p&gt;A naive upgrade from Lenny to Squeeze using aptitude dist-upgrade
currently always fail because udev refuses to upgrade with the kernel
in Lenny, so to avoid that problem the file /etc/udev/kernel-upgrade
is created.  The bug report
&lt;a href=&quot;http://bugs.debian.org/566000&quot;&gt;#566000&lt;/a&gt; make me suspect
this problem do not trigger in a chroot, but I touch the file anyway
to make sure the upgrade go well.  Testing on virtual and real
hardware have failed me because of udev so far, and creating this file
do the trick in such settings anyway.  This is a
&lt;a href=&quot;http://www.linuxquestions.org/questions/debian-26/failed-dist-upgrade-due-to-udev-config_sysfs_deprecated-nonsense-804130/&quot;&gt;known
issue&lt;/a&gt; and the current udev behaviour is intended by the udev
maintainer because he lack the resources to rewrite udev to keep
working with old kernels or something like that.  I really wish the
udev upstream would keep udev backwards compatible, to avoid such
upgrade problem, but given that they fail to do so, I guess
documenting the way out of this mess is the best option we got for
Debian Squeeze.&lt;/p&gt;

&lt;p&gt;Anyway, back to the task at hand, testing upgrades.  This test
script, which I call &lt;tt&gt;upgrade-test&lt;/tt&gt; for now, is doing the
trick:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
#!/bin/sh
set -ex

if [ &quot;$1&quot; ] ; then
    desktop=$1
else
    desktop=gnome
fi

from=lenny
to=squeeze

exec &amp;lt; /dev/null
unset LANG
mirror=http://ftp.skolelinux.org/debian
tmpdir=chroot-$from-upgrade-$to-$desktop
fuser -mv .
debootstrap $from $tmpdir $mirror
chroot $tmpdir aptitude update
cat &gt; $tmpdir/usr/sbin/policy-rc.d &amp;lt;&amp;lt;EOF
#!/bin/sh
exit 101
EOF
chmod a+rx $tmpdir/usr/sbin/policy-rc.d
exit_cleanup() {
    umount $tmpdir/proc
}
mount -t proc proc $tmpdir/proc
# Make sure proc is unmounted also on failure
trap exit_cleanup EXIT INT

chroot $tmpdir aptitude -y install debconf-utils

# Make sure tasksel autoselection trigger.  It need the test scripts
# to return the correct answers.
echo tasksel tasksel/desktop multiselect $desktop | \
    chroot $tmpdir debconf-set-selections

# Include the desktop and laptop task
for test in desktop laptop ; do
    echo &gt; $tmpdir/usr/lib/tasksel/tests/$test &amp;lt;&amp;lt;EOF
#!/bin/sh
exit 2
EOF
    chmod a+rx $tmpdir/usr/lib/tasksel/tests/$test
done

DEBIAN_FRONTEND=noninteractive
DEBIAN_PRIORITY=critical
export DEBIAN_FRONTEND DEBIAN_PRIORITY
chroot $tmpdir tasksel --new-install

echo deb $mirror $to main &gt; $tmpdir/etc/apt/sources.list
chroot $tmpdir aptitude update
touch $tmpdir/etc/udev/kernel-upgrade
chroot $tmpdir aptitude -y dist-upgrade
fuser -mv
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;I suspect it would be useful to test upgrades with both apt-get and
with aptitude, but I have not had time to look at how they behave
differently so far.  I hope to get a cron job running to do the test
regularly and post the result on the web.  The Gnome upgrade currently
work, while the KDE upgrade fail because of the bug in
kdebase-workspace-data&lt;/p&gt;

&lt;p&gt;I am not quite sure what kind of extract from the huge upgrade logs
(KDE 167 KiB, Gnome 516 KiB) it make sense to include in this blog
post, so I will refrain from trying.  I can report that for Gnome,
aptitude report 760 packages upgraded, 448 newly installed, 129 to
remove and 1 not upgraded and 1024MB need to be downloaded while for
KDE the same numbers are 702 packages upgraded, 507 newly installed,
193 to remove and 0 not upgraded and 1117MB need to be downloaded&lt;/p&gt;

&lt;p&gt;I am very happy to notice that the Gnome desktop + laptop upgrade
is able to migrate to dependency based boot sequencing and parallel
booting without a hitch.  Was unsure if there were still bugs with
packages failing to clean up their obsolete init.d script during
upgrades, and no such problem seem to affect the Gnome desktop+laptop
packages.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Upstart or sysvinit - as init.d scripts see it</title>
                <link>http://people.skolelinux.org/pere/blog/Upstart_or_sysvinit___as_init_d_scripts_see_it.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Upstart_or_sysvinit___as_init_d_scripts_see_it.html</guid>
                <pubDate>Sun, 6 Jun 2010 23:55:00 +0200</pubDate>
                <description>&lt;p&gt;If Debian is to migrate to upstart on Linux, I expect some init.d
scripts to migrate (some of) their operations to upstart job while
keeping the init.d for hurd and kfreebsd.  The packages with such
needs will need a way to get their init.d scripts to behave
differently when used with sysvinit and with upstart.  Because of
this, I had a look at the environment variables set when a init.d
script is running under upstart, and when it is not.&lt;/p&gt;

&lt;p&gt;With upstart, I notice these environment variables are set when a
script is started from rcS.d/ (ignoring some irrelevant ones like
COLUMNS):&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
DEFAULT_RUNLEVEL=2
previous=N
PREVLEVEL=
RUNLEVEL=
runlevel=S
UPSTART_EVENTS=startup
UPSTART_INSTANCE=
UPSTART_JOB=rc-sysinit
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;With sysvinit, these environment variables are set for the same
script.&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
INIT_VERSION=sysvinit-2.88
previous=N
PREVLEVEL=N
RUNLEVEL=S
runlevel=S
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The RUNLEVEL and PREVLEVEL environment variables passed on from
sysvinit are not set by upstart.  Not sure if it is intentional or not
to not be compatible with sysvinit in this regard.&lt;/p&gt;

&lt;p&gt;For scripts needing to behave differently when upstart is used,
looking for the UPSTART_JOB environment variable seem to be a good
choice.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>A manual for standards wars...</title>
                <link>http://people.skolelinux.org/pere/blog/A_manual_for_standards_wars___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_manual_for_standards_wars___.html</guid>
                <pubDate>Sun, 6 Jun 2010 14:15:00 +0200</pubDate>
                <description>&lt;p&gt;Via the
&lt;a href=&quot;http://feedproxy.google.com/~r/robweir/antic-atom/~3/QzU4RgoAGMg/weekly-links-10.html&quot;&gt;blog
of Rob Weir&lt;/a&gt; I came across the very interesting essay named
&lt;a href=&quot;http://faculty.haas.berkeley.edu/shapiro/wars.pdf&quot;&gt;The Art of
Standards Wars&lt;/a&gt; (PDF 25 pages).  I recommend it for everyone
following the standards wars of today.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Sitesummary tip: Listing computer hardware models used at site</title>
                <link>http://people.skolelinux.org/pere/blog/Sitesummary_tip__Listing_computer_hardware_models_used_at_site.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Sitesummary_tip__Listing_computer_hardware_models_used_at_site.html</guid>
                <pubDate>Thu, 3 Jun 2010 12:05:00 +0200</pubDate>
                <description>&lt;p&gt;When using sitesummary at a site to track machines, it is possible
to get a list of the machine types in use thanks to the DMI
information extracted from each machine.  The script to do so is
included in the sitesummary package, and here is example output from
the Skolelinux build servers:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
maintainer:~# /usr/lib/sitesummary/hardware-model-summary
  vendor                    count
  Dell Computer Corporation     1
    PowerEdge 1750              1
  IBM                           1
    eserver xSeries 345 -[8670M1X]-     1
  Intel                         2
  [no-dmi-info]                 3
maintainer:~#
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The quality of the report depend on the quality of the DMI tables
provided in each machine.  Here there are Intel machines without model
information listed with Intel as vendor and no model, and virtual Xen
machines listed as [no-dmi-info].  One can add -l as a command line
option to list the individual machines.&lt;/p&gt;

&lt;p&gt;A larger list is
&lt;a href=&quot;http://narvikskolen.no/sitesummary/&quot;&gt;available from the the
city of Narvik&lt;/a&gt;, which uses Skolelinux on all their shools and also
provide the basic sitesummary report publicly.  In their report there
are ~1400 machines. I know they use both Ubuntu and Skolelinux on
their machines, and as sitesummary is available in both distributions,
it is trivial to get all of them to report to the same central
collector.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>KDM fail at boot with NVidia cards - and no one try to fix it?</title>
                <link>http://people.skolelinux.org/pere/blog/KDM_fail_at_boot_with_NVidia_cards___and_no_one_try_to_fix_it_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/KDM_fail_at_boot_with_NVidia_cards___and_no_one_try_to_fix_it_.html</guid>
                <pubDate>Tue, 1 Jun 2010 17:05:00 +0200</pubDate>
                <description>&lt;p&gt;It is strange to watch how a bug in Debian causing KDM to fail to
start at boot when an NVidia video card is used is handled.  The
problem seem to be that the nvidia X.org driver uses a long time to
initialize, and this duration is longer than kdm is configured to
wait.&lt;/p&gt;

&lt;p&gt;I came across two bugs related to this issue,
&lt;a href=&quot;http://bugs.debian.org/583312&quot;&gt;#583312&lt;/a&gt; initially filed
against initscripts and passed on to nvidia-glx when it became obvious
that the nvidia drivers were involved, and
&lt;a href=&quot;http://bugs.debian.org/524751&quot;&gt;#524751&lt;/a&gt; initially filed against
kdm and passed on to src:nvidia-graphics-drivers for unknown reasons.&lt;/p&gt;

&lt;p&gt;To me, it seem that no-one is interested in actually solving the
problem nvidia video card owners experience and make sure the Debian
distribution work out of the box for these users.  The nvidia driver
maintainers expect kdm to be set up to wait longer, while kdm expect
the nvidia driver maintainers to fix the driver to start faster, and
while they wait for each other I guess the users end up switching to a
distribution that work for them.  I have no idea what the solution is,
but I am pretty sure that waiting for each other is not it.&lt;/p&gt;

&lt;p&gt;I wonder why we end up handling bugs this way.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Parallellized boot seem to hold up well in Debian/testing</title>
                <link>http://people.skolelinux.org/pere/blog/Parallellized_boot_seem_to_hold_up_well_in_Debian_testing.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Parallellized_boot_seem_to_hold_up_well_in_Debian_testing.html</guid>
                <pubDate>Thu, 27 May 2010 23:55:00 +0200</pubDate>
                <description>&lt;p&gt;A few days ago, parallel booting was enabled in Debian/testing.
The feature seem to hold up pretty well, but three fairly serious
issues are known and should be solved:

&lt;p&gt;&lt;ul&gt;

&lt;li&gt;The wicd package seen to
&lt;a href=&quot;http://bugs.debian.org/508289&quot;&gt;break NFS mounting&lt;/a&gt; and
&lt;a href=&quot;http://bugs.debian.org/581586&quot;&gt;network setup&lt;/a&gt; when
parallel booting is enabled.  No idea why, but the wicd maintainer
seem to be on the case.&lt;/li&gt;

&lt;li&gt;The nvidia X driver seem to
&lt;a href=&quot;http://bugs.debian.org/583312&quot;&gt;have a race condition&lt;/a&gt;
triggered more easily when parallel booting is in effect.  The
maintainer is on the case.&lt;/li&gt;

&lt;li&gt;The sysv-rc package fail to properly enable dependency based boot
sequencing (the shutdown is broken) when old file-rc users
&lt;a href=&quot;http://bugs.debian.org/575080&quot;&gt;try to switch back&lt;/a&gt; to
sysv-rc.  One way to solve it would be for file-rc to create
/etc/init.d/.legacy-bootordering, and another is to try to make
sysv-rc more robust.  Will investigate some more and probably upload a
workaround in sysv-rc to help those trying to move from file-rc to
sysv-rc get a working shutdown.&lt;/li&gt;

&lt;/ul&gt;&lt;/p&gt;

&lt;p&gt;All in all not many surprising issues, and all of them seem
solvable before Squeeze is released.  In addition to these there are
some packages with bugs in their dependencies and run level settings,
which I expect will be fixed in a reasonable time span.&lt;/p&gt;

&lt;p&gt;If you report any problems with dependencies in init.d scripts to
the BTS, please usertag the report to get it to show up at
&lt;a href=&quot;http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org&quot;&gt;the
list of usertagged bugs related to this&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Update: Correct bug number to file-rc issue.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>More flexible firmware handling in debian-installer</title>
                <link>http://people.skolelinux.org/pere/blog/More_flexible_firmware_handling_in_debian_installer.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/More_flexible_firmware_handling_in_debian_installer.html</guid>
                <pubDate>Sat, 22 May 2010 21:30:00 +0200</pubDate>
                <description>&lt;p&gt;After a long break from debian-installer development, I finally
found time today to return to the project.  Having to spend less time
working dependency based boot in debian, as it is almost complete now,
definitely helped freeing some time.&lt;/p&gt;

&lt;p&gt;A while back, I ran into a problem while working on Debian Edu.  We
include some firmware packages on the Debian Edu CDs, those needed to
get disk and network controllers working.  Without having these
firmware packages available during installation, it is impossible to
install Debian Edu on the given machine, and because our target group
are non-technical people, asking them to provide firmware packages on
an external medium is a support pain.  Initially, I expected it to be
enough to include the firmware packages on the CD to get
debian-installer to find and use them.  This proved to be wrong.
Next, I hoped it was enough to symlink the relevant firmware packages
to some useful location on the CD (tried /cdrom/ and
/cdrom/firmware/).  This also proved to not work, and at this point I
found time to look at the debian-installer code to figure out what was
going to work.&lt;/p&gt;

&lt;p&gt;The firmware loading code is in the hw-detect package, and a closer
look revealed that it would only look for firmware packages outside
the installation media, so the CD was never checked for firmware
packages.  It would only check USB sticks, floppies and other
&quot;external&quot; media devices.  Today I changed it to also look in the
/cdrom/firmware/ directory on the mounted CD or DVD, which should
solve the problem I ran into with Debian edu.  I also changed it to
look in /firmware/, to make sure the installer also find firmware
provided in the initrd when booting the installer via PXE, to allow us
to provide the same feature in the PXE setup included in Debian
Edu.&lt;/p&gt;

&lt;p&gt;To make sure firmware deb packages with a license questions are not
activated without asking if the license is accepted, I extended
hw-detect to look for preinst scripts in the firmware packages, and
run these before activating the firmware during installation.  The
license question is asked using debconf in the preinst, so this should
solve the issue for the firmware packages I have looked at so far.&lt;/p&gt;

&lt;p&gt;If you want to discuss the details of these features, please
contact us on debian-boot@lists.debian.org.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Pieces of the roaming laptop puzzle in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/Pieces_of_the_roaming_laptop_puzzle_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Pieces_of_the_roaming_laptop_puzzle_in_Debian.html</guid>
                <pubDate>Wed, 19 May 2010 19:00:00 +0200</pubDate>
                <description>&lt;p&gt;Today, the last piece of the puzzle for roaming laptops in Debian
Edu finally entered the Debian archive.  Today, the new
&lt;a href=&quot;http://packages.qa.debian.org/libp/libpam-mklocaluser.html&quot;&gt;libpam-mklocaluser&lt;/a&gt;
package was accepted.  Two days ago, two other pieces was accepted
into unstable.  The
&lt;a href=&quot;http://packages.qa.debian.org/p/pam-python.html&quot;&gt;pam-python&lt;/a&gt;
package needed by libpam-mklocaluser, and the
&lt;a href=&quot;http://packages.qa.debian.org/s/sssd.html&quot;&gt;sssd&lt;/a&gt; package
passed NEW on Monday.  In addition, the
&lt;a href=&quot;http://packages.qa.debian.org/libp/libpam-ccreds.html&quot;&gt;libpam-ccreds&lt;/a&gt;
package we need is in experimental (version 10-4) since Saturday, and
hopefully will be moved to unstable soon.&lt;/p&gt;

&lt;p&gt;This collection of packages allow for two different setups for
roaming laptops.  The traditional setup would be using libpam-ccreds,
nscd and libpam-mklocaluser with LDAP or Kerberos authentication,
which should work out of the box if the configuration changes proposed
for nscd in &lt;a href=&quot;http://bugs.debian.org/485282&quot;&gt;BTS report
#485282&lt;/a&gt; is implemented.  The alternative setup is to use sssd with
libpam-mklocaluser to connect to LDAP or Kerberos and let sssd take
care of the caching of passwords and group information.&lt;/p&gt;

&lt;p&gt;I have so far been unable to get sssd to work with the LDAP server
at the University, but suspect the issue is some SSL/GnuTLS related
problem with the server certificate.  I plan to update the Debian
package to version 1.2, which is scheduled for next week, and hope to
find time to make sure the next release will include both the
Debian/Ubuntu specific patches.  Upstream is friendly and responsive,
and I am sure we will find a good solution.&lt;/p&gt;

&lt;p&gt;The idea is to set up the roaming laptops to authenticate using
LDAP or Kerberos and create a local user with home directory in /home/
when a usre in LDAP logs in via KDM or GDM for the first time, and
cache the password for offline checking, as well as caching group
memberhips and other relevant LDAP information.  The
libpam-mklocaluser package was created to make sure the local home
directory is in /home/, instead of /site/server/directory/ which would
be the home directory if pam_mkhomedir was used.  To avoid confusion
with support requests and configuration, we do not want local laptops
to have users in a path that is used for the same users home directory
on the home directory servers.&lt;/p&gt;

&lt;p&gt;One annoying problem with gdm is that it do not show the PAM
message passed to the user from libpam-mklocaluser when the local user
is created.  Instead gdm simply reject the login with some generic
message.  The message is shown in kdm, ssh and login, so I guess it is
a bug in gdm.  Have not investigated if there is some other message
type that can be used instead to get gdm to also show the message.&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing this for Debian Edu,
please contact us on debian-edu@lists.debian.org.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Parallellized boot is now the default in Debian/unstable</title>
                <link>http://people.skolelinux.org/pere/blog/Parallellized_boot_is_now_the_default_in_Debian_unstable.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Parallellized_boot_is_now_the_default_in_Debian_unstable.html</guid>
                <pubDate>Fri, 14 May 2010 22:40:00 +0200</pubDate>
                <description>&lt;p&gt;Since this evening, parallel booting is the default in
Debian/unstable for machines using dependency based boot sequencing.
Apparently the testing of concurrent booting has been wider than
expected, if I am to believe the
&lt;a href=&quot;http://lists.debian.org/debian-devel/2010/05/msg00122.html&quot;&gt;input
on debian-devel@&lt;/a&gt;, and I concluded a few days ago to move forward
with the feature this weekend, to give us some time to detect any
remaining problems before Squeeze is frozen.  If serious problems are
detected, it is simple to change the default back to sequential boot.
The upload of the new sysvinit package also activate a new upstream
version.&lt;/p&gt;

More information about
&lt;a href=&quot;http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot&quot;&gt;dependency
based boot sequencing&lt;/a&gt; is available from the Debian wiki.  It is
currently possible to disable parallel booting when one run into
problems caused by it, by adding this line to /etc/default/rcS:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
CONCURRENCY=none
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;If you report any problems with dependencies in init.d scripts to
the BTS, please usertag the report to get it to show up at
&lt;a href=&quot;http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org&quot;&gt;the
list of usertagged bugs related to this&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Sitesummary tip: Listing MAC address of all clients</title>
                <link>http://people.skolelinux.org/pere/blog/Sitesummary_tip__Listing_MAC_address_of_all_clients.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Sitesummary_tip__Listing_MAC_address_of_all_clients.html</guid>
                <pubDate>Fri, 14 May 2010 21:10:00 +0200</pubDate>
                <description>&lt;p&gt;In the recent Debian Edu versions, the
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/SiteSummary&quot;&gt;sitesummary
system&lt;/a&gt; is used to keep track of the machines in the school
network.  Each machine will automatically report its status to the
central server after boot and once per night.  The network setup is
also reported, and using this information it is possible to get the
MAC address of all network interfaces in the machines.  This is useful
to update the DHCP configuration.&lt;/p&gt;

&lt;p&gt;To give some idea how to use sitesummary, here is a one-liner to
ist all MAC addresses of all machines reporting to sitesummary.  Run
this on the collector host:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
perl -MSiteSummary -e &#39;for_all_hosts(sub { print join(&quot; &quot;, get_macaddresses(shift)), &quot;\n&quot;; });&#39;
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;This will list all MAC addresses assosiated with all machine, one
line per machine and with space between the MAC addresses.&lt;/p&gt;

&lt;p&gt;To allow system administrators easier job at adding static DHCP
addresses for hosts, it would be possible to extend this to fetch
machine information from sitesummary and update the DHCP and DNS
tables in LDAP using this information.  Such tool is unfortunately not
written yet.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>systemd, an interesting alternative to upstart</title>
                <link>http://people.skolelinux.org/pere/blog/systemd__an_interesting_alternative_to_upstart.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/systemd__an_interesting_alternative_to_upstart.html</guid>
                <pubDate>Thu, 13 May 2010 22:20:00 +0200</pubDate>
                <description>&lt;p&gt;The last few days a new boot system called
&lt;a href=&quot;http://www.freedesktop.org/wiki/Software/systemd&quot;&gt;systemd&lt;/a&gt;
has been
&lt;a href=&quot;http://0pointer.de/blog/projects/systemd.html&quot;&gt;introduced&lt;/a&gt;

to the free software world.  I have not yet had time to play around
with it, but it seem to be a very interesting alternative to
&lt;a href=&quot;http://upstart.ubuntu.com/&quot;&gt;upstart&lt;/a&gt;, and might prove to be
a good alternative for Debian when we are able to switch to an event
based boot system.  Tollef is
&lt;a href=&quot;http://bugs.debian.org/580814&quot;&gt;in the process&lt;/a&gt; of getting
systemd into Debian, and I look forward to seeing how well it work.  I
like the fact that systemd handles init.d scripts with dependency
information natively, allowing them to run in parallel where upstart
at the moment do not.&lt;/p&gt;

&lt;p&gt;Unfortunately do systemd have the same problem as upstart regarding
platform support.  It only work on recent Linux kernels, and also need
some new kernel features enabled to function properly.  This means
kFreeBSD and Hurd ports of Debian will need a port or a different boot
system.  Not sure how that will be handled if systemd proves to be the
way forward.&lt;/p&gt;

&lt;p&gt;In the mean time, based on the
&lt;a href=&quot;http://lists.debian.org/debian-devel/2010/05/msg00122.html&quot;&gt;input
on debian-devel@&lt;/a&gt; regarding parallel booting in Debian, I have
decided to enable full parallel booting as the default in Debian as
soon as possible (probably this weekend or early next week), to see if
there are any remaining serious bugs in the init.d dependencies.  A
new version of the sysvinit package implementing this change is
already in experimental.  If all go well, Squeeze will be released
with parallel booting enabled by default.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Parallellizing the boot in Debian Squeeze - ready for wider testing</title>
                <link>http://people.skolelinux.org/pere/blog/Parallellizing_the_boot_in_Debian_Squeeze___ready_for_wider_testing.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Parallellizing_the_boot_in_Debian_Squeeze___ready_for_wider_testing.html</guid>
                <pubDate>Thu, 6 May 2010 23:25:00 +0200</pubDate>
                <description>&lt;p&gt;These days, the init.d script dependencies in Squeeze are quite
complete, so complete that it is actually possible to run all the
init.d scripts in parallell based on these dependencies.  If you want
to test your Squeeze system, make sure
&lt;a href=&quot;http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot&quot;&gt;dependency
based boot sequencing&lt;/a&gt; is enabled, and add this line to
/etc/default/rcS:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
CONCURRENCY=makefile
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;That is it.  It will cause sysv-rc to use the startpar tool to run
scripts in parallel using the dependency information stored in
/etc/init.d/.depend.boot, /etc/init.d/.depend.start and
/etc/init.d/.depend.stop to order the scripts.  Startpar is configured
to try to start the kdm and gdm scripts as early as possible, and will
start the facilities required by kdm or gdm as early as possible to
make this happen.&lt;/p&gt;

&lt;p&gt;Give it a try, and see if you like the result.  If some services
fail to start properly, it is most likely because they have incomplete
init.d script dependencies in their startup script (or some of their
dependent scripts have incomplete dependencies).  Report bugs and get
the package maintainers to fix it. :)&lt;/p&gt;

&lt;p&gt;Running scripts in parallel could be the default in Debian when we
manage to get the init.d script dependencies complete and correct.  I
expect we will get there in Squeeze+1, if we get manage to test and
fix the remaining issues.&lt;/p&gt;

&lt;p&gt;If you report any problems with dependencies in init.d scripts to
the BTS, please usertag the report to get it to show up at
&lt;a href=&quot;http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org&quot;&gt;the
list of usertagged bugs related to this&lt;/a&gt;.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Forcing new users to change their password on first login</title>
                <link>http://people.skolelinux.org/pere/blog/Forcing_new_users_to_change_their_password_on_first_login.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Forcing_new_users_to_change_their_password_on_first_login.html</guid>
                <pubDate>Sun, 2 May 2010 13:47:00 +0200</pubDate>
                <description>&lt;p&gt;One interesting feature in Active Directory, is the ability to
create a new user with an expired password, and thus force the user to
change the password on the first login attempt.&lt;/p&gt;

&lt;p&gt;I&#39;m not quite sure how to do that with the LDAP setup in Debian
Edu, but did some initial testing with a local account.  The account
and password aging information is available in /etc/shadow, but
unfortunately, it is not possible to specify an expiration time for
passwords, only a maximum age for passwords.&lt;/p&gt;

&lt;p&gt;A freshly created account (using adduser test) will have these
settings in /etc/shadow:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
root@tjener:~# chage -l test
Last password change                                    : May 02, 2010
Password expires                                        : never
Password inactive                                       : never
Account expires                                         : never
Minimum number of days between password change          : 0
Maximum number of days between password change          : 99999
Number of days of warning before password expires       : 7
root@tjener:~#
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The only way I could come up with to create a user with an expired
account, is to change the date of the last password change to the
lowest value possible (January 1th 1970), and the maximum password age
to the difference in days between that date and today.  To make it
simple, I went for 30 years (30 * 365 = 10950) and January 2th (to
avoid testing if 0 is a valid value).&lt;/p&gt;

&lt;p&gt;After using these commands to set it up, it seem to work as
intended:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;
root@tjener:~# chage -d 1 test; chage -M 10950 test
root@tjener:~# chage -l test
Last password change                                    : Jan 02, 1970
Password expires                                        : never
Password inactive                                       : never
Account expires                                         : never
Minimum number of days between password change          : 0
Maximum number of days between password change          : 10950
Number of days of warning before password expires       : 7
root@tjener:~#  
&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;So far I have tested this with ssh and console, and kdm (in
Squeeze) login, and all ask for a new password before login in the
user (with ssh, I was thrown out and had to log in again).&lt;/p&gt;

&lt;p&gt;Perhaps we should set up something similar for Debian Edu, to make
sure only the user itself have the account password?&lt;/p&gt;

&lt;p&gt;If you want to comment on or help out with implementing this for
Debian Edu, please contact us on debian-edu@lists.debian.org.&lt;/p&gt;

&lt;p&gt;Update 2010-05-02 17:20: Paul Tötterman tells me on IRC that the
shadow(8) page in Debian/testing now state that setting the date of
last password change to zero (0) will force the password to be changed
on the first login.  This was not mentioned in the manual in Lenny, so
I did not notice this in my initial testing.  I have tested it on
Squeeze, and &#39;&lt;tt&gt;chage -d 0 username&lt;/tt&gt;&#39; do work there.  I have not
tested it on Lenny yet.&lt;/p&gt;

&lt;p&gt;Update 2010-05-02-19:05: Jim Paris tells me via email that an
equivalent command to expire a password is &#39;&lt;tt&gt;passwd -e
username&lt;/tt&gt;&#39;, which insert zero into the date of the last password
change.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Thoughts on roaming laptop setup for Debian Edu</title>
                <link>http://people.skolelinux.org/pere/blog/Thoughts_on_roaming_laptop_setup_for_Debian_Edu.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Thoughts_on_roaming_laptop_setup_for_Debian_Edu.html</guid>
                <pubDate>Wed, 28 Apr 2010 20:40:00 +0200</pubDate>
                <description>&lt;p&gt;For some years now, I have wondered how we should handle laptops in
Debian Edu.  The Debian Edu infrastructure is mostly designed to
handle stationary computers, and less suited for computers that come
and go.&lt;/p&gt;

&lt;p&gt;Now I finally believe I have an sensible idea on how to adjust
Debian Edu for laptops, by introducing a new profile for them, for
example called Roaming Workstations.  Here are my thought on this.
The setup would consist of the following:&lt;/p&gt;

&lt;ul&gt;

 &lt;li&gt;During installation, the user name of the owner / primary user of
   the laptop is requested and a local home directory is set up for
   the user, with uid and gid information fetched from the LDAP
   server.  This allow the user to work also when offline.  The
   central home directory can be available in a subdirectory on
   request, for example mounted via CIFS.  It could be mounted
   automatically when a user log in while on the Debian Edu network,
   and unmounted when the machine is taken away (network down,
   hibernate, etc), it can be set up to do automatic mounting on
   request (using autofs), or perhaps some GUI button on the desktop
   can be used to access it when needed.  Perhaps it is enough to use
   the fish protocol in KDE?&lt;/li&gt;

 &lt;li&gt;Password checking is set up to use LDAP or Kerberos
   authentication when the machine is on the Debian Edu network, and
   to cache the password for offline checking when the machine unable
   to reach the LDAP or Kerberos server.  This can be done using
   &lt;a href=&quot;http://www.padl.com/OSS/pam_ccreds.html&quot;&gt;libpam-ccreds&lt;/a&gt;
   or the Fedora developed
   &lt;a href=&quot;https://fedoraproject.org/wiki/Features/SSSD&quot;&gt;System
   Security Services Daemon&lt;/a&gt; packages.&lt;/li&gt;

 &lt;li&gt;File synchronisation with the central home directory is set up
   using a shared directory in both the local and the central home
   directory, using unison.&lt;/li&gt;

 &lt;li&gt;Printing should be set up to print to all printers broadcasting
   their existence on the local network, and should then work out of
   the box with CUPS.  For sites needing accurate printer quotas, some
   system with Kerberos authentication or printing via ssh could be
   implemented.&lt;/li&gt;

 &lt;li&gt;For users that should have local root access to their laptop,
   sudo should be used to allow this to the local user.&lt;/li&gt;

 &lt;li&gt;It would be nice if user and group information from LDAP is
   cached on the client, but given that there are entries for the
   local user and primary group in /etc/, it should not be needed.&lt;/li&gt;

&lt;/ul&gt;

&lt;p&gt;I believe all the pieces to implement this are in Debian/testing at
the moment.  If we work quickly, we should be able to get this ready
in time for the Squeeze release to freeze.  Some of the pieces need
tweaking, like libpam-ccreds should get support for pam-auth-update
(&lt;a href=&quot;http://bugs.debian.org/566718&quot;&gt;#566718&lt;/a&gt;) and nslcd (or
perhaps debian-edu-config) should get some integration code to stop
its daemon when the LDAP server is unavailable to avoid long timeouts
when disconnected from the net.  If we get Kerberos enabled, we need
to make sure we avoid long timeouts there too.&lt;/p&gt;

&lt;p&gt;If you want to help out with implementing this for Debian Edu,
please contact us on debian-edu@lists.debian.org.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Great book: &quot;Content: Selected Essays on Technology, Creativity, Copyright, and the Future of the Future&quot;</title>
                <link>http://people.skolelinux.org/pere/blog/Great_book___Content__Selected_Essays_on_Technology__Creativity__Copyright__and_the_Future_of_the_Future_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Great_book___Content__Selected_Essays_on_Technology__Creativity__Copyright__and_the_Future_of_the_Future_.html</guid>
                <pubDate>Mon, 19 Apr 2010 17:10:00 +0200</pubDate>
                <description>&lt;p&gt;The last few weeks i have had the pleasure of reading a
thought-provoking collection of essays by Cory Doctorow, on topics
touching copyright, virtual worlds, the future of man when the
conscience mind can be duplicated into a computer and many more. The
book titled &quot;Content: Selected Essays on Technology, Creativity,
Copyright, and the Future of the Future&quot; is available with few
restrictions on the web, for example from
&lt;a href=&quot;http://craphound.com/content/&quot;&gt;his own site&lt;/a&gt;. I read the
epub-version from
&lt;a href=&quot;http://www.feedbooks.com/book/2883&quot;&gt;feedbooks&lt;/a&gt; using
&lt;a href=&quot;http://www.fbreader.org/&quot;&gt;fbreader&lt;/a&gt; and my N810. I
strongly recommend this book.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Kerberos for Debian Edu/Squeeze?</title>
                <link>http://people.skolelinux.org/pere/blog/Kerberos_for_Debian_Edu_Squeeze_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Kerberos_for_Debian_Edu_Squeeze_.html</guid>
                <pubDate>Wed, 14 Apr 2010 17:20:00 +0200</pubDate>
                <description>&lt;p&gt;&lt;a href=&quot;http://www.nuug.no/aktiviteter/20100413-kerberos/&quot;&gt;Yesterdays
NUUG presentation&lt;/a&gt; about Kerberos was inspiring, and reminded me
about the need to start using Kerberos in Skolelinux.  Setting up a
Kerberos server seem to be straight forward, and if we get this in
place a long time before the Squeeze version of Debian freezes, we
have a chance to migrate Skolelinux away from NFSv3 for the home
directories, and over to an architecture where the infrastructure do
not have to trust IP addresses and machines, and instead can trust
users and cryptographic keys instead.&lt;/p&gt;

&lt;p&gt;A challenge will be integration and administration.  Is there a
Kerberos implementation for Debian where one can control the
administration access in Kerberos using LDAP groups?  With it, the
school administration will have to maintain access control using flat
files on the main server, which give a huge potential for errors.&lt;/p&gt;

&lt;p&gt;A related question I would like to know is how well Kerberos and
pam-ccreds (offline password check) work together.  Anyone know?&lt;/p&gt;

&lt;p&gt;Next step will be to use Kerberos for access control in Lwat and
Nagios.  I have no idea how much work that will be to implement.  We
would also need to document how to integrate with Windows AD, as such
shared network will require two Kerberos realms that need to cooperate
to work properly.&lt;/p&gt;

&lt;p&gt;I believe a good start would be to start using Kerberos on the
skolelinux.no machines, and this way get ourselves experience with
configuration and integration.  A natural starting point would be
setting up ldap.skolelinux.no as the Kerberos server, and migrate the
rest of the machines from PAM via LDAP to PAM via Kerberos one at the
time.&lt;/p&gt;

&lt;p&gt;If you would like to contribute to get this working in Skolelinux,
I recommend you to see the video recording from yesterdays NUUG
presentation, and start using Kerberos at home.  The video show show
up in a few days.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>After 6 years of waiting, the Xreset.d feature is implemented</title>
                <link>http://people.skolelinux.org/pere/blog/After_6_years_of_waiting__the_Xreset_d_feature_is_implemented.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/After_6_years_of_waiting__the_Xreset_d_feature_is_implemented.html</guid>
                <pubDate>Sat, 6 Mar 2010 18:15:00 +0100</pubDate>
                <description>&lt;p&gt;6 years ago, as part of the Debian Edu development I am involved
in, I asked for a hook in the kdm and gdm setup to run scripts as root
when the user log out.  A bug was submitted against the xfree86-common
package in 2004 (&lt;a href=&quot;http://bugs.debian.org/230422&quot;&gt;#230422&lt;/a&gt;),
and revisited every time Debian Edu was working on a new release.
Today, this finally paid off.&lt;/p&gt;

&lt;p&gt;The framework for this feature was today commited to the git
repositry for the xorg package, and the git repository for xdm has
been updated to use this framework.  Next on my agenda is to make sure
kdm and gdm also add code to use this framework.&lt;/p&gt;

&lt;p&gt;In Debian Edu, we want to ability to run commands as root when the
user log out, to get rid of runaway processes and do general cleanup
after a user.  With this framework in place, we finally can do that in
a generic way that work with all display managers using this
framework.  My goal is to get all display managers in Debian use it,
similar to how they use the Xsession.d framework today.&lt;p&gt;
</description>
        </item>
        
        <item>
                <title>Debian Edu / Skolelinux based on Lenny released, work continues</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_Edu___Skolelinux_based_on_Lenny_released__work_continues.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_Edu___Skolelinux_based_on_Lenny_released__work_continues.html</guid>
                <pubDate>Thu, 11 Feb 2010 17:15:00 +0100</pubDate>
                <description>&lt;p&gt;On Tuesday, the Debian/Lenny based version of
&lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Skolelinux&lt;/a&gt; was finally
shipped.  This was a major leap forward for the project, and I am very
pleased that we finally got the release wrapped up.  Work on the first
point release starts imediately, as we plan to get that one out a
month after the major release, to include all fixes for bugs we found
and fixed too late in the release process to include last Tuesday.&lt;/p&gt;

&lt;p&gt;Perhaps it even is time for some partying?&lt;/p&gt;

&lt;p&gt;After this first point release, my plan is to focus again on the
next major release, based on Squeeze.  We will try to get as many of
the fixes we need into the official Debian packages before the freeze,
and have just a few weeks or months to make it happen.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Automatic Munin and Nagios configuration</title>
                <link>http://people.skolelinux.org/pere/blog/Automatic_Munin_and_Nagios_configuration.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Automatic_Munin_and_Nagios_configuration.html</guid>
                <pubDate>Wed, 27 Jan 2010 15:15:00 +0100</pubDate>
                <description>&lt;p&gt;One of the new features in the next Debian/Lenny based release of
Debian Edu/Skolelinux, which is scheduled for release in the next few
days, is automatic configuration of the service monitoring system
Nagios.  The previous release had automatic configuration of trend
analysis using Munin, and this Lenny based release take that a step
further.&lt;/p&gt;

&lt;p&gt;When installing a Debian Edu Main-server, it is automatically
configured as a Munin and Nagios server.  In addition, it is
configured to be a server for the
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/HowTo/SiteSummary&quot;&gt;SiteSummary
system&lt;/a&gt; I have written for use in Debian Edu.  The SiteSummary
system is inspired by a system used by the University of Oslo where I
work.  In short, the system provide a centralised collector of
information about the computers on the network, and a client on each
computer submitting information to this collector.  This allow for
automatic information on which packages are installed on each machine,
which kernel the machines are using, what kind of configuration the
packages got etc.  This also allow us to automatically generate Munin
and Nagios configuration.&lt;/p&gt;

&lt;p&gt;All computers reporting to the sitesummary collector with the
munin-node package installed is automatically enabled as a Munin
client and graphs from the statistics collected from that machine show
up automatically on http://www/munin/ on the Main-server.&lt;/p&gt;

&lt;p&gt;All non-laptop computers reporting to the sitesummary collector are
automatically monitored for network presence (ping and any network
services detected).  In addition, all computers (also laptops) with
the nagios-nrpe-server package installed and configured the way
sitesummary would configure it, are monitored for full disks, software
raid status, swap free and other checks that need to run locally on
the machine.&lt;/p&gt;

&lt;p&gt;The result is that the administrator on a school using Debian Edu
based on Lenny will be able to check the health of his installation
with one look at the Nagios settings, without having to spend any time
keeping the Nagios configuration up-to-date.&lt;/p&gt;

&lt;p&gt;The only configuration one need to do to get Nagios up and running
is to set the password used to get access via HTTP.  The system
administrator need to run &quot;&lt;tt&gt;htpasswd /etc/nagios3/htpasswd.users
nagiosadmin&lt;/tt&gt;&quot; to create a nagiosadmin user and set a password for
it to be able to log into the Nagios web pages.  After that,
everything is taken care of.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Relative popularity of document formats (MS Office vs. ODF)</title>
                <link>http://people.skolelinux.org/pere/blog/Relative_popularity_of_document_formats__MS_Office_vs__ODF_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Relative_popularity_of_document_formats__MS_Office_vs__ODF_.html</guid>
                <pubDate>Wed, 12 Aug 2009 15:50:00 +0200</pubDate>
                <description>&lt;p&gt;Just for fun, I did a search right now on Google for a few file ODF
and MS Office based formats (not to be mistaken for ISO or ECMA
OOXML), to get an idea of their relative usage.  I searched using
&#39;filetype:odt&#39; and equvalent terms, and got these results:&lt;/P&gt;

&lt;table&gt;
&lt;tr&gt;&lt;th&gt;Type&lt;/th&gt;&lt;th&gt;ODF&lt;/th&gt;&lt;th&gt;MS Office&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Tekst&lt;/td&gt; &lt;td&gt;odt:282000&lt;/td&gt; &lt;td&gt;docx:308000&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Presentasjon&lt;/td&gt; &lt;td&gt;odp:75600&lt;/td&gt; &lt;td&gt;pptx:183000&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Regneark&lt;/td&gt; &lt;td&gt;ods:26500     &lt;/td&gt; &lt;td&gt;xlsx:145000&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

&lt;p&gt;Next, I added a &#39;site:no&#39; limit to get the numbers for Norway, and
got these numbers:&lt;/p&gt;

&lt;table&gt;
&lt;tr&gt;&lt;th&gt;Type&lt;/th&gt;&lt;th&gt;ODF&lt;/th&gt;&lt;th&gt;MS Office&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Tekst&lt;/td&gt; &lt;td&gt;odt:2480 &lt;/td&gt; &lt;td&gt;docx:4460&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Presentasjon&lt;/td&gt; &lt;td&gt;odp:299   &lt;/td&gt; &lt;td&gt;pptx:741&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Regneark&lt;/td&gt; &lt;td&gt;ods:187       &lt;/td&gt; &lt;td&gt;xlsx:372&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

&lt;p&gt;I wonder how these numbers change over time.&lt;/p&gt;

&lt;p&gt;I am aware of Google returning different results and numbers based
on where the search is done, so I guess these numbers will differ if
they are conduced in another country.  Because of this, I did the same
search from a machine in California, USA, a few minutes after the
search done from a machine here in Norway.&lt;/p&gt;


&lt;table&gt;
&lt;tr&gt;&lt;th&gt;Type&lt;/th&gt;&lt;th&gt;ODF&lt;/th&gt;&lt;th&gt;MS Office&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Tekst&lt;/td&gt; &lt;td&gt;odt:129000&lt;/td&gt; &lt;td&gt;docx:308000&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Presentasjon&lt;/td&gt; &lt;td&gt;odp:44200&lt;/td&gt; &lt;td&gt;pptx:93900&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Regneark&lt;/td&gt; &lt;td&gt;ods:26500     &lt;/td&gt; &lt;td&gt;xlsx:82400&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

&lt;p&gt;And with &#39;site:no&#39;:

&lt;table&gt;
&lt;tr&gt;&lt;th&gt;Type&lt;/th&gt;&lt;th&gt;ODF&lt;/th&gt;&lt;th&gt;MS Office&lt;/th&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Tekst&lt;/td&gt; &lt;td&gt;odt:2480&lt;/td&gt; &lt;td&gt;docx:3410&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Presentasjon&lt;/td&gt; &lt;td&gt;odp:175&lt;/td&gt; &lt;td&gt;pptx:604&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td&gt;Regneark&lt;/td&gt; &lt;td&gt;ods:186       &lt;/td&gt; &lt;td&gt;xlsx:296&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

&lt;p&gt;Interesting difference, not sure what to conclude from these
numbers.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>ISO still hope to fix OOXML</title>
                <link>http://people.skolelinux.org/pere/blog/ISO_still_hope_to_fix_OOXML.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/ISO_still_hope_to_fix_OOXML.html</guid>
                <pubDate>Sat, 8 Aug 2009 14:00:00 +0200</pubDate>
                <description>&lt;p&gt;According to &lt;a
href=&quot;http://twerner.blogspot.com/2009/08/defects-of-office-open-xml.html&quot;&gt;a
blog post from Torsten Werner&lt;/a&gt;, the current defect report for ISO
29500 (ISO OOXML) is 809 pages.  His interesting point is that the
defect report is 71 pages more than the full ODF 1.1 specification.
Personally I find it more interesting that ISO still believe ISO OOXML
can be fixed in ISO.  Personally, I believe it is broken beyon repair,
and I completely lack any trust in ISO for being able to get anywhere
close to solving the problems.  I was part of the Norwegian committee
involved in the OOXML fast track process, and was not impressed with
Standard Norway and ISO in how they handled it.&lt;/p&gt;

&lt;p&gt;These days I focus on ODF instead, which seem like a specification
with the future ahead of it.  We are working in NUUG to organise a ODF
seminar this autumn.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian has switched to dependency based boot sequencing</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_has_switched_to_dependency_based_boot_sequencing.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_has_switched_to_dependency_based_boot_sequencing.html</guid>
                <pubDate>Mon, 27 Jul 2009 23:50:00 +0200</pubDate>
                <description>&lt;p&gt;Since this evening, with the upload of sysvinit version 2.87dsf-2,
and the upload of insserv version 1.12.0-10 yesterday, Debian unstable
have been migrated to using dependency based boot sequencing.  This
conclude work me and others have been doing for the last three days.
It feels great to see this finally part of the default Debian
installation.  Now we just need to weed out the last few problems that
are bound to show up, to get everything ready for Squeeze.&lt;/p&gt;

&lt;p&gt;The next step is migrating /sbin/init from sysvinit to upstart, and
fixing the more fundamental problem of handing the event based
non-predictable kernel in the early boot.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Taking over sysvinit development</title>
                <link>http://people.skolelinux.org/pere/blog/Taking_over_sysvinit_development.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Taking_over_sysvinit_development.html</guid>
                <pubDate>Wed, 22 Jul 2009 23:00:00 +0200</pubDate>
                <description>&lt;p&gt;After several years of frustration with the lack of activity from
the existing sysvinit upstream developer, I decided a few weeks ago to
take over the package and become the new upstream.  The number of
patches to track for the Debian package was becoming a burden, and the
lack of synchronization between the distribution made it hard to keep
the package up to date.&lt;/p&gt;

&lt;p&gt;On the new sysvinit team is the SuSe maintainer Dr. Werner Fink,
and my Debian co-maintainer Kel Modderman.  About 10 days ago, I made
a new upstream tarball with version number 2.87dsf (for Debian, SuSe
and Fedora), based on the patches currently in use in these
distributions.  We Debian maintainers plan to move to this tarball as
the new upstream as soon as we find time to do the merge.  Since the
new tarball was created, we agreed with Werner at SuSe to make a new
upstream project at &lt;a href=&quot;http://savannah.nongnu.org/&quot;&gt;Savannah&lt;/a&gt;, and continue
development there.  The project is registered and currently waiting
for approval by the Savannah administrators, and as soon as it is
approved, we will import the old versions from svn and continue
working on the future release.&lt;/p&gt;

&lt;p&gt;It is a bit ironic that this is done now, when some of the involved
distributions are moving to upstart as a syvinit replacement.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Debian boots quicker and quicker</title>
                <link>http://people.skolelinux.org/pere/blog/Debian_boots_quicker_and_quicker.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_boots_quicker_and_quicker.html</guid>
                <pubDate>Wed, 24 Jun 2009 21:40:00 +0200</pubDate>
                <description>&lt;p&gt;I spent Monday and tuesday this week in London with a lot of the
people involved in the boot system on Debian and Ubuntu, to see if we
could find more ways to speed up the boot system.  This was an Ubuntu
funded
&lt;a href=&quot;https://wiki.ubuntu.com/FoundationsTeam/BootPerformance/DebianUbuntuSprint&quot;&gt;developer
gathering&lt;/a&gt;. It was quite productive.  We also discussed the future
of boot systems, and ways to handle the increasing number of boot
issues introduced by the Linux kernel becoming more and more
asynchronous and event base.  The Ubuntu approach using udev and
upstart might be a good way forward.  Time will show.&lt;/p&gt;

&lt;p&gt;Anyway, there are a few ways at the moment to speed up the boot
process in Debian.  All of these should be applied to get a quick
boot:&lt;/p&gt;

&lt;ul&gt;

&lt;li&gt;Use dash as /bin/sh.&lt;/li&gt;

&lt;li&gt;Disable the init.d/hwclock*.sh scripts and make sure the hardware
   clock is in UTC.&lt;/li&gt;

&lt;li&gt;Install and activate the insserv package to enable
   &lt;a href=&quot;http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot&quot;&gt;dependency
   based boot sequencing&lt;/a&gt;, and enable concurrent booting.&lt;/li&gt;

&lt;/ul&gt;

These points are based on the Google summer of code work done by
&lt;a href=&quot;http://initscripts-ng.alioth.debian.org/soc2006-bootsystem/&quot;&gt;Carlos
Villegas&lt;/a&gt;.

&lt;p&gt;Support for makefile-style concurrency during boot was uploaded to
unstable yesterday.  When we tested it, we were able to cut 6 seconds
from the boot sequence.  It depend on very correct dependency
declaration in all init.d scripts, so I expect us to find edge cases
where the dependences in some scripts are slightly wrong when we start
using this.&lt;/p&gt;

&lt;p&gt;On our IRC channel for this effort, #pkg-sysvinit, a new idea was
introduced by Raphael Geissert today, one that could affect the
startup speed as well.  Instead of starting some scripts concurrently
from rcS.d/ and another set of scripts from rc2.d/, it would be
possible to run a of them in the same process.  A quick way to test
this would be to enable insserv and run &#39;mv /etc/rc2.d/S* /etc/rcS.d/;
insserv&#39;.  Will need to test if that work. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Two projects that have improved the quality of free software a lot</title>
                <link>http://people.skolelinux.org/pere/blog/Two_projects_that_have_improved_the_quality_of_free_software_a_lot.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Two_projects_that_have_improved_the_quality_of_free_software_a_lot.html</guid>
                <pubDate>Sat, 2 May 2009 15:00:00 +0200</pubDate>
                <description>&lt;p&gt;There are two software projects that have had huge influence on the
quality of free software, and I wanted to mention both in case someone
do not yet know them.&lt;/p&gt;

&lt;p&gt;The first one is &lt;a href=&quot;http://valgrind.org/&quot;&gt;valgrind&lt;/a&gt;, a
tool to detect and expose errors in the memory handling of programs.
It is easy to use, all one need to do is to run &#39;valgrind program&#39;,
and it will report any problems on stdout.  It is even better if the
program include debug information.  With debug information, it is able
to report the source file name and line number where the problem
occurs.  It can report things like &#39;reading past memory block in file
X line N, the memory block was allocated in file Y, line M&#39;, and
&#39;using uninitialised value in control logic&#39;.  This tool has made it
trivial to investigate reproducible crash bugs in programs, and have
reduced the number of this kind of bugs in free software a lot.

&lt;p&gt;The second one is
&lt;a href=&quot;http://en.wikipedia.org/wiki/Coverity&quot;&gt;Coverity&lt;/a&gt; which is
a source code checker.  It is able to process the source of a program
and find problems in the logic without running the program.  It
started out as the Stanford Checker and became well known when it was
used to find bugs in the Linux kernel.  It is now a commercial tool
and the company behind it is running
&lt;a href=&quot;http://www.scan.coverity.com/&quot;&gt;a community service&lt;/a&gt; for the
free software community, where a lot of free software projects get
their source checked for free.  Several thousand defects have been
found and fixed so far.  It can find errors like &#39;lock L taken in file
X line N is never released if exiting in line M&#39;, or &#39;the code in file
Y lines O to P can never be executed&#39;.  The projects included in the
community service project have managed to get rid of a lot of
reliability problems thanks to Coverity.&lt;/p&gt;

&lt;p&gt;I believe tools like this, that are able to automatically find
errors in the source, are vital to improve the quality of software and
make sure we can get rid of the crashing and failing software we are
surrounded by today.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>No patch is not better than a useless patch</title>
                <link>http://people.skolelinux.org/pere/blog/No_patch_is_not_better_than_a_useless_patch.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/No_patch_is_not_better_than_a_useless_patch.html</guid>
                <pubDate>Tue, 28 Apr 2009 09:30:00 +0200</pubDate>
                <description>&lt;p&gt;Julien Blache
&lt;a href=&quot;http://blog.technologeek.org/2009/04/12/214&quot;&gt;claim that no
patch is better than a useless patch&lt;/a&gt;.  I completely disagree, as a
patch allow one to discuss a concrete and proposed solution, and also
prove that the issue at hand is important enough for someone to spent
time on fixing it.  No patch do not provide any of these positive
properties.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Recording video from cron using VLC</title>
                <link>http://people.skolelinux.org/pere/blog/Recording_video_from_cron_using_VLC.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Recording_video_from_cron_using_VLC.html</guid>
                <pubDate>Sun, 5 Apr 2009 10:00:00 +0200</pubDate>
                <description>&lt;p&gt;One think I have wanted to figure out for a along time is how to
run vlc from cron to do recording of video streams on the net.  The
task is trivial with mplayer, but I do not really trust the security
of mplayer (it crashes too often on strange input), and thus prefer
vlc.  I finally found a way to do it today.  I spent an hour or so
searching the web for recipes and reading the documentation.  The
hardest part was to get rid of the GUI window, but after finding the
dummy interface, the command line finally presented itself:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;URL=http://www.ping.uio.no/video/rms-oslo_2009.ogg
SAVEFILE=rms.ogg
DISPLAY= vlc -q $URL \
  --sout=&quot;#duplicate{dst=std{access=file,url=&#39;$SAVEFILE&#39;},dst=nodisplay}&quot; \
  --intf=dummy&lt;/pre&gt;&lt;/blockquote&gt;

&lt;p&gt;The command stream the URL and store it in the SAVEFILE by
duplicating the output stream to &quot;nodisplay&quot; and the file, using the
dummy interface.  The dummy interface and the nodisplay output make
sure no X interface is needed.&lt;/p&gt;

&lt;p&gt;The cron job then need to start this job with the appropriate URL
and file name to save, sleep for the duration wanted, and then kill
the vlc process with SIGTERM.  Here is a complete script
&lt;tt&gt;vlc-record&lt;/tt&gt; to use from &lt;tt&gt;at&lt;/tt&gt; or &lt;tt&gt;cron&lt;/tt&gt;:&lt;/p&gt;

&lt;blockquote&gt;&lt;pre&gt;#!/bin/sh
set -e
URL=&quot;$1&quot;
SAVEFILE=&quot;$2&quot;
DURATION=&quot;$3&quot;
DISPLAY= vlc -q &quot;$URL&quot; \
  --sout=&quot;#duplicate{dst=std{access=file,url=&#39;$SAVEFILE&#39;},dst=nodisplay}&quot; \
  --intf=dummy &lt; /dev/null &gt; /dev/null 2&gt;&amp;1 &amp;
pid=$!
sleep $DURATION
kill $pid
wait $pid&lt;/pre&gt;&lt;/blockquote&gt;
</description>
        </item>
        
        <item>
                <title>Standardize on protocols and formats, not vendors and applications</title>
                <link>http://people.skolelinux.org/pere/blog/Standardize_on_protocols_and_formats__not_vendors_and_applications.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Standardize_on_protocols_and_formats__not_vendors_and_applications.html</guid>
                <pubDate>Mon, 30 Mar 2009 11:50:00 +0200</pubDate>
                <description>&lt;p&gt;Where I work at the University of Oslo, one decision stand out as a
very good one to form a long lived computer infrastructure.  It is the
simple one, lost by many in todays computer industry: Standardize on
open network protocols and open exchange/storage formats, not applications.
Applications come and go, while protocols and files tend to stay, and
thus one want to make it easy to change application and vendor, while
avoiding conversion costs and locking users to a specific platform or
application.&lt;/p&gt;

&lt;p&gt;This approach make it possible to replace the client applications
independently of the server applications.  One can even allow users to
use several different applications as long as they handle the selected
protocol and format.  In the normal case, only one client application
is recommended and users only get help if they choose to use this
application, but those that want to deviate from the easy path are not
blocked from doing so.&lt;/p&gt;

&lt;p&gt;It also allow us to replace the server side without forcing the
users to replace their applications, and thus allow us to select the
best server implementation at any moment, when scale and resouce
requirements change.&lt;/p&gt;

&lt;p&gt;I strongly recommend standardizing - on open network protocols and
open formats, but I would never recommend standardizing on a single
application that do not use open network protocol or open formats.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Returning from Skolelinux developer gathering</title>
                <link>http://people.skolelinux.org/pere/blog/Returning_from_Skolelinux_developer_gathering.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Returning_from_Skolelinux_developer_gathering.html</guid>
                <pubDate>Sun, 29 Mar 2009 21:00:00 +0200</pubDate>
                <description>&lt;p&gt;I&#39;m sitting on the train going home from this weekends Debian
Edu/Skolelinux development gathering.  I got a bit done tuning the
desktop, and looked into the dynamic service location protocol
implementation avahi.  It look like it could be useful for us.  Almost
30 people participated, and I believe it was a great environment to
get to know the Skolelinux system.  Walter Bender, involved in the
development of the Sugar educational platform, presented his stuff and
also helped me improve my OLPC installation.  He also showed me that
his Turtle Art application can be used in standalone mode, and we
agreed that I would help getting it packaged for Debian.  As a
standalone application it would be great for Debian Edu.  We also
tried to get the video conferencing working with two OLPCs, but that
proved to be too hard for us.  The application seem to need more work
before it is ready for me.  I look forward to getting home and relax
now. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Time for new  LDAP schemas replacing RFC 2307?</title>
                <link>http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html</guid>
                <pubDate>Sun, 29 Mar 2009 20:30:00 +0200</pubDate>
                <description>&lt;p&gt;The state of standardized LDAP schemas on Linux is far from
optimal.  There is RFC 2307 documenting one way to store NIS maps in
LDAP, and a modified version of this normally called RFC 2307bis, with
some modifications to be compatible with Active Directory.  The RFC
specification handle the content of a lot of system databases, but do
not handle DNS zones and DHCP configuration.&lt;/p&gt;

&lt;p&gt;In &lt;a href=&quot;http://www.skolelinux.org/&quot;&gt;Debian Edu/Skolelinux&lt;/a&gt;,
we would like to store information about users, SMB clients/hosts,
filegroups, netgroups (users and hosts), DHCP and DNS configuration,
and LTSP configuration in LDAP.  These objects have a lot in common,
but with the current LDAP schemas it is not possible to have one
object per entity.  For example, one need to have at least three LDAP
objects for a given computer, one with the SMB related stuff, one with
DNS information and another with DHCP information.  The schemas
provided for DNS and DHCP are impossible to combine into one LDAP
object.  In addition, it is impossible to implement quick queries for
netgroup membership, because of the way NIS triples are implemented.
It just do not scale.  I believe it is time for a few RFC
specifications to cleam up this mess.&lt;/p&gt;

&lt;p&gt;I would like to have one LDAP object representing each computer in
the network, and this object can then keep the SMB (ie host key), DHCP
(mac address/name) and DNS (name/IP address) settings in one place.
It need to be efficently stored to make sure it scale well.&lt;/p&gt;

&lt;p&gt;I would also like to have a quick way to map from a user or
computer and to the net group this user or computer is a member.&lt;/p&gt;

&lt;p&gt;Active Directory have done a better job than unix heads like myself
in this regard, and the unix side need to catch up.  Time to start a
new IETF work group?&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Checking server hardware support status for Dell, HP and IBM servers</title>
                <link>http://people.skolelinux.org/pere/blog/Checking_server_hardware_support_status_for_Dell__HP_and_IBM_servers.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Checking_server_hardware_support_status_for_Dell__HP_and_IBM_servers.html</guid>
                <pubDate>Sat, 28 Feb 2009 23:50:00 +0100</pubDate>
                <description>&lt;p&gt;At work, we have a few hundred Linux servers, and with that amount
of hardware it is important to keep track of when the hardware support
contract expire for each server.  We have a machine (and service)
register, which until recently did not contain much useful besides the
machine room location and contact information for the system owner for
each machine.  To make it easier for us to track support contract
status, I&#39;ve recently spent time on extending the machine register to
include information about when the support contract expire, and to tag
machines with expired contracts to make it easy to get a list of such
machines.  I extended a perl script already being used to import
information about machines into the register, to also do some screen
scraping off the sites of Dell, HP and IBM (our majority of machines
are from these vendors), and automatically check the support status
for the relevant machines.  This make the support status information
easily available and I hope it will make it easier for the computer
owner to know when to get new hardware or renew the support contract.
The result of this work documented that 27% of the machines in the
registry is without a support contract, and made it very easy to find
them.  27% might seem like a lot, but I see it more as the case of us
using machines a bit longer than the 3 years a normal support contract
last, to have test machines and a platform for less important
services.  After all, the machines without a contract are working fine
at the moment and the lack of contract is only a problem if any of
them break down.  When that happen, we can either fix it using spare
parts from other machines or move the service to another old
machine.&lt;/p&gt;

&lt;p&gt;I believe the code for screen scraping the Dell site was originally
written by Trond Hasle Amundsen, and later adjusted by me and Morten
Werner Forsbring.  The HP scraping was written by me after reading a
nice article in ;login: about how to use WWW::Mechanize, and the IBM
scraping was written by me based on the Dell code.  I know the HTML
parsing could be done using nice libraries, but did not want to
introduce more dependencies.  This is the current incarnation:&lt;/p&gt;

&lt;pre&gt;
use LWP::Simple;
use POSIX;
use WWW::Mechanize;
use Date::Parse;
[...]
sub get_support_info {
    my ($machine, $model, $serial, $productnumber) = @_;
    my $str;

    if ( $model =~ m/^Dell / ) {
        # fetch website from Dell support
        my $url = &quot;http://support.euro.dell.com/support/topics/topic.aspx/emea/shared/support/my_systems_info/no/details?c=no&amp;amp;cs=nodhs1&amp;amp;l=no&amp;amp;s=dhs&amp;amp;ServiceTag=$serial&quot;;
        my $webpage = get($url);
        return undef unless ($webpage);

        my $daysleft = -1;
        my @lines = split(/\n/, $webpage);
        foreach my $line (@lines) {
            next unless ($line =~ m/Beskrivelse/);
            $line =~ s/&amp;lt;[^&gt;]+?&gt;/;/gm;
            $line =~ s/^.+?;(Beskrivelse;)/$1/;

            my @f = split(/\;/, $line);
            @f = @f[13 .. $#f];
            my $lastend = &quot;&quot;;
            while ($f[3] eq &quot;DELL&quot;) {
                my ($type, $startstr, $endstr, $days) = @f[0, 5, 7, 10];

                my $start = POSIX::strftime(&quot;%Y-%m-%d&quot;,
                                            localtime(str2time($startstr)));
                my $end = POSIX::strftime(&quot;%Y-%m-%d&quot;,
                                          localtime(str2time($endstr)));
                $str .= &quot;$type $start -&gt; $end &quot;;
                @f = @f[14 .. $#f];
                $lastend = $end if ($end gt $lastend);
            }
            my $today = POSIX::strftime(&quot;%Y-%m-%d&quot;, localtime(time));
            tag_machine_unsupported($machine)
                if ($lastend lt $today);
        }
    } elsif ( $model =~ m/^HP / ) {
        my $mech = WWW::Mechanize-&gt;new();
        my $url =
            &#39;http://www1.itrc.hp.com/service/ewarranty/warrantyInput.do&#39;;
        $mech-&gt;get($url);
        my $fields = {
            &#39;BODServiceID&#39; =&gt; &#39;NA&#39;,
            &#39;RegisteredPurchaseDate&#39; =&gt; &#39;&#39;,
            &#39;country&#39; =&gt; &#39;NO&#39;,
            &#39;productNumber&#39; =&gt; $productnumber,
            &#39;serialNumber1&#39; =&gt; $serial,
        };
        $mech-&gt;submit_form( form_number =&gt; 2,
                            fields      =&gt; $fields );
        # Next step is screen scraping
        my $content = $mech-&gt;content();

        $content =~ s/&amp;lt;[^&gt;]+?&gt;/;/gm;
        $content =~ s/\s+/ /gm;
        $content =~ s/;\s*;/;;/gm;
        $content =~ s/;[\s;]+/;/gm;

        my $today = POSIX::strftime(&quot;%Y-%m-%d&quot;, localtime(time));

        while ($content =~ m/;Warranty Type;/) {
            my ($type, $status, $startstr, $stopstr) = $content =~
                m/;Warranty Type;([^;]+);.+?;Status;(\w+);Start Date;([^;]+);End Date;([^;]+);/;
            $content =~ s/^.+?;Warranty Type;//;
            my $start = POSIX::strftime(&quot;%Y-%m-%d&quot;,
                                        localtime(str2time($startstr)));
            my $end = POSIX::strftime(&quot;%Y-%m-%d&quot;,
                                      localtime(str2time($stopstr)));

            $str .= &quot;$type ($status) $start -&gt; $end &quot;;

            tag_machine_unsupported($machine)
                if ($end lt $today);
        }
    } elsif ( $model =~ m/^IBM / ) {
        # This code ignore extended support contracts.
        my ($producttype) = $model =~ m/.*-\[(.{4}).+\]-/;
        if ($producttype &amp;amp;&amp;amp; $serial) {
            my $content =
                get(&quot;http://www-947.ibm.com/systems/support/supportsite.wss/warranty?action=warranty&amp;amp;brandind=5000008&amp;amp;Submit=Submit&amp;amp;type=$producttype&amp;amp;serial=$serial&quot;);
            if ($content) {
                $content =~ s/&amp;lt;[^&gt;]+?&gt;/;/gm;
                $content =~ s/\s+/ /gm;
                $content =~ s/;\s*;/;;/gm;
                $content =~ s/;[\s;]+/;/gm;

                $content =~ s/^.+?;Warranty status;//;
                my ($status, $end) = $content =~ m/;Warranty status;([^;]+)\s*;Expiration date;(\S+) ;/;

                $str .= &quot;($status) -&gt; $end &quot;;

                my $today = POSIX::strftime(&quot;%Y-%m-%d&quot;, localtime(time));
                tag_machine_unsupported($machine)
                    if ($end lt $today);
            }
        }
    }
    return $str;
}
&lt;/pre&gt;

&lt;p&gt;Here are some examples on how to use the function, using fake
serial numbers.  The information passed in as arguments are fetched
from dmidecode.&lt;/p&gt;

&lt;pre&gt;
print get_support_info(&quot;hp.host&quot;, &quot;HP ProLiant BL460c G1&quot;, &quot;1234567890&quot;
                       &quot;447707-B21&quot;);
print get_support_info(&quot;dell.host&quot;, &quot;Dell Inc. PowerEdge 2950&quot;, &quot;1234567&quot;);
print get_support_info(&quot;ibm.host&quot;, &quot;IBM eserver xSeries 345 -[867061X]-&quot;,
                       &quot;1234567&quot;);
&lt;/pre&gt;

&lt;p&gt;I would recommend this approach for tracking support contracts for
everyone with more than a few computers to administer. :)&lt;/p&gt;

&lt;p&gt;Update 2009-03-06: The IBM page do not include extended support
contracts, so it is useless in that case.  The original Dell code do
not handle extended support contracts either, but has been updated to
do so.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Using bar codes at a computing center</title>
                <link>http://people.skolelinux.org/pere/blog/Using_bar_codes_at_a_computing_center.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_bar_codes_at_a_computing_center.html</guid>
                <pubDate>Fri, 20 Feb 2009 08:50:00 +0100</pubDate>
                <description>&lt;p&gt;At work with the University of Oslo, we have several hundred computers
in our computing center.  This give us a challenge in tracking the
location and cabling of the computers, when they are added, moved and
removed.  Some times the location register is not updated when a
computer is inserted or moved and we then have to search the room for
the &quot;missing&quot; computer.&lt;/p&gt;

&lt;p&gt;In the last issue of Linux Journal, I came across a project
&lt;a href=&quot;http://www.libdmtx.org/&quot;&gt;libdmtx&lt;/a&gt; to write and read bar
code blocks as defined in the
&lt;a href=&quot;http://en.wikipedia.org/wiki/Data_Matrix&quot;&gt;The Data Matrix
Standard&lt;/a&gt;.  This is bar codes that can be read with a normal
digital camera, for example that on a cell phone, and several such bar
codes can be read by libdmtx from one picture.  The bar code standard
allow up to 2 KiB to be written in the tag.  There is another project
with &lt;a href=&quot;http://www.terryburton.co.uk/barcodewriter/&quot;&gt;a bar code
writer written in postscript&lt;/a&gt; capable of creating such bar codes,
but this was the first time I found a tool to read these bar
codes.&lt;/p&gt;

&lt;p&gt;It occurred to me that this could be used to tag and track the
machines in our computing center.  If both racks and computers are
tagged this way, we can use a picture of the rack and all its
computers to detect the rack location of any computer in that rack.
If we do this regularly for the entire room, we will find all
locations, and can detect movements and removals.&lt;/p&gt;

&lt;p&gt;I decided to test if this would work in practice, and picked a
random rack and tagged all the machines with their names.  Next, I
took pictures with my digital camera, and gave the dmtxread program
these JPEG pictures to see how many tags it could read.  This worked
fairly well.  If the pictures was well focused and not taken from the
side, all tags in the image could be read.  Because of limited space
between the racks, I was unable to get a good picture of the entire
rack, but could without problem read all tags from a picture covering
about half the rack.  I had to limit the search time used by dmtxread
to 60000 ms to make sure it terminated in a reasonable time frame.&lt;/p&gt;

&lt;p&gt;My conclusion is that this could work, and we should probably look
at adjusting our computer tagging procedures to use bar codes for
easier automatic tracking of computers.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>When web browser developers make a video player...</title>
                <link>http://people.skolelinux.org/pere/blog/When_web_browser_developers_make_a_video_player___.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/When_web_browser_developers_make_a_video_player___.html</guid>
                <pubDate>Sat, 17 Jan 2009 18:50:00 +0100</pubDate>
                <description>&lt;p&gt;As part of the work we do in &lt;a href=&quot;http://www.nuug.no&quot;&gt;NUUG&lt;/a&gt;
to publish video recordings of our monthly presentations, we provide a
page with embedded video for easy access to the recording.  Putting a
good set of HTML tags together to get working embedded video in all
browsers and across all operating systems is not easy.  I hope this
will become easier when the &amp;lt;video&amp;gt; tag is implemented in all
browsers, but I am not sure.  We provide the recordings in several
formats, MPEG1, Ogg Theora, H.264 and Quicktime, and want the
browser/media plugin to pick one it support and use it to play the
recording, using whatever embed mechanism the browser understand.
There is at least four different tags to use for this, the new HTML5
&amp;lt;video&amp;gt; tag, the &amp;lt;object&amp;gt; tag, the &amp;lt;embed&amp;gt; tag and
the &amp;lt;applet&amp;gt; tag.  All of these take a lot of options, and
finding the best options is a major challenge.&lt;/p&gt;

&lt;p&gt;I just tested the experimental Opera browser available from &lt;a
href=&quot;http://labs.opera.com&quot;&gt;labs.opera.com&lt;/a&gt;, to see how it handled
a &amp;lt;video&amp;gt; tag with a few video sources and no extra attributes.
I was not very impressed.  The browser start by fetching a picture
from the video stream.  Not sure if it is the first frame, but it is
definitely very early in the recording.  So far, so good. Next,
instead of streaming the 76 MiB video file, it start to download all
of it, but do not start to play the video.  This mean I have to wait
for several minutes for the downloading to finish.  When the download
is done, the playing of the video do not start!  Waiting for the
download, but I do not get to see the video?  Some testing later, I
discover that I have to add the controls=&quot;true&quot; attribute to be able
to get a play button to pres to start the video.  Adding
autoplay=&quot;true&quot; did not help.  I sure hope this is a misfeature of the
test version of Opera, and that future implementations of the
&amp;lt;video&amp;gt; tag will stream recordings by default, or at least start
playing when the download is done.&lt;/p&gt;

&lt;p&gt;The test page I used (since changed to add more attributes) is
&lt;a href=&quot;http://www.nuug.no/aktiviteter/20090113-foredrag-om-foredrag/&quot;&gt;available
from the nuug site&lt;/a&gt;.  Will have to test it with the new Firefox
too.&lt;/p&gt;

&lt;p&gt;In the test process, I discovered a missing feature.  I was unable
to find a way to get the URL of the playing video out of Opera, so I
am not quite sure it picked the Ogg Theora version of the video.  I
sure hope it was using the announced Ogg Theora support. :)&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Software video mixer on a USB stick</title>
                <link>http://people.skolelinux.org/pere/blog/Software_video_mixer_on_a_USB_stick.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Software_video_mixer_on_a_USB_stick.html</guid>
                <pubDate>Sun, 28 Dec 2008 15:40:00 +0100</pubDate>
                <description>&lt;p&gt;The &lt;a href=&quot;http://www.nuug.no/&quot;&gt;Norwegian Unix User Group&lt;/a&gt; is
recording our montly presentation on video, and recently we have
worked on improving the quality of the recordings by mixing the slides
directly with the video stream.  For this, we use the
&lt;a href=&quot;http://dvswitch.alioth.debian.org/&quot;&gt;dvswitch&lt;/a&gt; package from
the Debian video team.  As this require quite one computer per video
source, and NUUG do not have enough laptops available, we need to
borrow laptops.  And to avoid having to install extra software on
these borrwed laptops, I have wrapped up all the programs needed on a
bootable USB stick.  The software required is dvswitch with assosiated
source, sink and mixer applications and
&lt;a href=&quot;http://www.kinodv.org/&quot;&gt;dvgrab&lt;/a&gt;.  To allow this setup to
work without any configuration, I&#39;ve patched dvswitch to use
&lt;a href=&quot;http://www.avahi.org/&quot;&gt;avahi&lt;/a&gt; to connect the various parts
together.  And to allow us to use laptops without firewire plugs, I
upgraded dvgrab to the one from Debian/unstable to get one that work
with USB sources.  We have not yet tested this setup in a production
setup, but I hope it will work properly, and allow us to set up a
video mixer in a very short time frame.  We will need it for
&lt;a href=&quot;http://www.goopen.no/&quot;&gt;Go Open 2009&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.nuug.no/pub/video/bin/usbstick-dvswitch.img.gz&quot;&gt;The
USB image&lt;/a&gt; is for a 1 GB memory stick, but can be used on any
larger stick as well.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>Devcamp brought us closer to the Lenny based Debian Edu release</title>
                <link>http://people.skolelinux.org/pere/blog/Devcamp_brought_us_closer_to_the_Lenny_based_Debian_Edu_release.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Devcamp_brought_us_closer_to_the_Lenny_based_Debian_Edu_release.html</guid>
                <pubDate>Sun, 7 Dec 2008 12:00:00 +0100</pubDate>
                <description>&lt;p&gt;This weekend we had a small developer gathering for Debian Edu in
Oslo.  Most of Saturday was used for the general assemly for the
member organization, but the rest of the weekend I used to tune the
LTSP installation.  LTSP now work out of the box on the 10-network.
Acer Aspire One proved to be a very nice thin client, with both
screen, mouse and keybard in a small box.  Was working on getting the
diskless workstation setup configured out of the box, but did not
finish it before the weekend was up.&lt;/p&gt;

&lt;p&gt;Did not find time to look at the 4 VGA cards in one box we got from
the Brazilian group, so that will have to wait for the next
development gathering.  Would love to have the Debian Edu installer
automatically detect and configure a multiseat setup when it find one
of these cards.&lt;/p&gt;
</description>
        </item>
        
        <item>
                <title>The sorry state of multimedia browser plugins in Debian</title>
                <link>http://people.skolelinux.org/pere/blog/The_sorry_state_of_multimedia_browser_plugins_in_Debian.html</link>
                <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_sorry_state_of_multimedia_browser_plugins_in_Debian.html</guid>
                <pubDate>Tue, 25 Nov 2008 00:10:00 +0100</pubDate>
                <description>&lt;p&gt;Recently I have spent some time evaluating the multimedia browser
plugins available in Debian Lenny, to see which one we should use by
default in Debian Edu.  We need an embedded video playing plugin with
control buttons to pause or stop the video, and capable of streaming
all the multimedia content available on the web.  The test results and
notes are available on
&lt;a href=&quot;http://wiki.debian.org/DebianEdu/BrowserMultimedia&quot;&gt;the
Debian wiki&lt;/a&gt;.  I was surprised how few of the plugins are able to
fill this need.  My personal video player favorite, VLC, has a really
bad plugin which fail on a lot of the test pages.  A lot of the MIME
types I would expect to work with any free software player (like
video/ogg), just do not work.  And simple formats like the
audio/x-mplegurl format (m3u playlists), just isn&#39;t supported by the
totem and vlc plugins.  I hope the situation will improve soon.  No
wonder sites use the proprietary Adobe flash to play video.&lt;/p&gt;

&lt;p&gt;For Lenny, we seem to end up with the mplayer plugin.  It seem to
be the only one fitting our needs. :/&lt;/p&gt;
</description>
        </item>
        
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