<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK_med_den__nye__l_sningen.html">Hvordan enkelt laste ned filmer fra NRK med den "nye" løsningen</a></div>
- <div class="date">16th June 2014</div>
- <div class="body"><p>Jeg har fortsatt behov for å kunne laste ned innslag fra NRKs
-nettsted av og til for å se senere når jeg ikke er på nett, men
-<a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK.html">min
-oppskrift fra 2011</a> sluttet å fungere da NRK byttet
-avspillermetode. I dag fikk jeg endelig lett etter oppdatert løsning,
-og jeg er veldig glad for å fortelle at den enkleste måten å laste ned
-innslag er å bruke siste versjon 2014.06.07 av
-<a href="http://rg3.github.io/youtube-dl/">youtube-dl</a>. Støtten i
-youtube-dl <a href="https://github.com/rg3/youtube-dl/issues/2980">kom
-inn for 23 dager siden</a> og
-<a href="http://packages.qa.debian.org/y/youtube-dl.html">versjonen i
-Debian</a> fungerer fint også som backport til Debian Wheezy. Det er
-et lite problem, det håndterer kun URLer med små bokstaver, men hvis
-en har en URL med store bokstaver kan en bare gjøre alle store om til
-små bokstaver for å få youtube-dl til å laste ned. Rapporterte
-nettopp
-<a href="https://github.com/rg3/youtube-dl/issues/2980">problemet til
-utviklerne</a>, og antar de får fikset det snart.</p>
-
-<p>Dermed er alt klart til å laste ned dokumentarene om
-<a href="http://tv.nrk.no/program/KOID23005014/usas-hemmelige-avlytting">USAs
-hemmelige avlytting</a> og
-<a href="http://tv.nrk.no/program/KOID23005114/selskapene-bak-usas-avlytting">Selskapene
-bak USAs avlytting</a>, i tillegg til
-<a href="http://tv.nrk.no/program/KOID20005814/et-moete-med-edward-snowden">intervjuet
-med Edward Snowden gjort av den tyske tv-kanalen ARD</a>. Anbefaler
-alle å se disse, sammen med
-<a href="http://media.ccc.de/browse/congress/2013/30C3_-_5713_-_en_-_saal_2_-_201312301130_-_to_protect_and_infect_part_2_-_jacob.html">foredraget
-til Jacob Appelbaum på siste CCC-konferanse</a>, for å forstå mer om
-hvordan overvåkningen av borgerne brer om seg.</p>
-
-<p>Takk til gode venner på foreningen NUUGs IRC-kanal
-<a href="irc://irc.freenode.net/%23nuug">#nuug på irc.freenode.net</a>
-for tipsene som fikk meg i mål</a>.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/What_would_it_cost_to_store_all_phone_calls_in_Norway_.html">What would it cost to store all phone calls in Norway?</a></div>
+ <div class="date"> 1st May 2015</div>
+ <div class="body"><p>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.</p>
+
+<p>The 2005 numbers are from
+<a href="http://www.digi.no/analyser/2005/10/04/vi-prater-stadig-mindre-i-roret">digi.no</a>,
+the 2012 numbers are from
+<a href="http://www.nkom.no/aktuelt/nyheter/fortsatt-vekst-i-det-norske-ekommarkedet">a
+NKOM report</a>, 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.</p>
+
+<p>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
+<a href="http://www.cisco.com/c/en/us/support/docs/voice/voice-quality/7934-bwidth-consume.html#topic1">summary
+on voice quality from Cisco</a> 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.</p>
+
+<p>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.</p>
+
+<p>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:</p>
+
+<table border="1">
+<tr><th>Year</th><th>Call minutes</th><th>Size</th><th>Price in NOK / EUR</th></tr>
+<tr><td>2005</td><td align="right">24 000 000 000</td><td align="right">1.3 PiB</td><td align="right">3 mill / 358 000</td></tr>
+<tr><td>2012</td><td align="right">18 000 000 000</td><td align="right">1.0 PiB</td><td align="right">2.2 mill / 262 000</td></tr>
+<tr><td>2013</td><td align="right">17 000 000 000</td><td align="right">950 TiB</td><td align="right">2.1 mill / 250 000</td></tr>
+</table>
+
+<p>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?</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Free_software_car_computer_solution_.html">Free software car computer solution?</a></div>
- <div class="date">29th May 2014</div>
- <div class="body"><p>Dear lazyweb. I'm planning to set up a small Raspberry Pi computer
-in my car, connected to
-<a href="http://www.dx.com/p/400a-4-0-tft-lcd-digital-monitor-for-vehicle-parking-reverse-camera-1440x272-12v-dc-57776">a
-small screen</a> 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
-"<a href="http://en.wikipedia.org/wiki/Carputer">Carputer</a>". But I
-wonder if someone already created a good free software solution for
-such car computer.</p>
-
-<p>This is my current wish list for such system:</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/First_Jessie_based_Debian_Edu_beta_release.html">First Jessie based Debian Edu beta release</a></div>
+ <div class="date">26th April 2015</div>
+ <div class="body"><p>I am happy to report that the Debian Edu team sent out
+<a href="https://lists.debian.org/debian-edu-announce/2015/04/msg00000.html">this
+announcement today</a>:</p>
-<ul>
+<pre>
+the Debian Edu / Skolelinux project is pleased to announce the first
+*beta* release of Debian Edu "Jessie" 8.0+edu0~b1, which for the first
+time is composed entirely of packages from the current Debian stable
+release, Debian 8 "Jessie".
- <li>Work on Raspberry Pi.</li>
+(As most reading this will know, Debian "Jessie" hasn't actually been
+released by now. The release is still in progress but should finish
+later today ;)
- <li>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
- <a href="http://www.openstreetmap.org/">Openstreetmap</a> or OCR
- info gathered from a dashboard camera.</li>
+We expect to make a final release of Debian Edu "Jessie" 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!
- <li>Track automatic toll road passes and their cost, show total spent
- and make it possible to calculate toll costs for planned
- route.</li>
+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 "Skolelinux" - 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.
- <li>Collect GPX tracks for use with OpenStreetMap.</li>
+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!
- <li>Automatically detect and use any wireless connection to connect
- to home server. Try IP over DNS
- (<a href="http://dev.kryo.se/iodine/">iodine</a>) or ICMP
- (<a href="http://code.gerade.org/hans/">Hans</a>) if direct
- connection do not work.</li>
+== Where to download ==
- <li>Set up mesh network to talk to other cars with the same system,
- or some standard car mesh protocol.</li>
+A multi-architecture CD / usbstick image (649 MiB) for network booting
+can be downloaded at the following locations:
- <li>Warn when approaching speed cameras and speed camera ranges
- (speed calculated between two cameras).</li>
+ 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 .
- <li>Suport dashboard/front facing camera to discover speed limits and
- run OCR to track registration number of passing cars.</li>
+The SHA1SUM of this image is: 54a524d16246cddd8d2cfd6ea52f2dd78c47ee0a
-</ul>
+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 "Jessie" 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.
-<p>If you know of any free software car computer system supporting
-some or all of these features, please let me know.</p>
+== 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.
+</pre>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Half_the_Coverity_issues_in_Gnash_fixed_in_the_next_release.html">Half the Coverity issues in Gnash fixed in the next release</a></div>
- <div class="date">29th April 2014</div>
- <div class="body"><p>I've been following <a href="http://www.getgnash.org/">the Gnash
-project</a> 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
-<a href="http://lightspark.github.io/">Lightspark</a> 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.</p>
-
-<p>A few months ago, I started looking at
-<a href="http://scan.coverity.com/">Coverity</a>, 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.</p>
-
-<p>Since a few weeks ago, I'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.</p>
-
-<p>If you want to help out, you find us on
-<a href="https://lists.gnu.org/mailman/listinfo/gnash-dev">the
-gnash-dev mailing list</a> and on
-<a href="irc://irc.freenode.net/#gnash">the #gnash channel on
-irc.freenode.net IRC server</a>.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Shirish_Agarwal.html">Debian Edu interview: Shirish Agarwal</a></div>
+ <div class="date">15th April 2015</div>
+ <div class="body"><p>It was a surprise to me to learn that project to create a complete
+computer system for schools I've involved in,
+<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a>, 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.</p>
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>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.</p>
+
+<p><strong>How did you get in contact with the Skolelinux / Debian Edu
+project?</strong></p>
+
+<p>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.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux / Debian
+Edu?</strong></p>
+
+<p>It'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
+<a href="https://bugs.debian.org/781841">#781841</a> and
+<a href="https://bugs.debian.org/781842">#781842</a>.</p>
+
+<p>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's more a
+question if it has enough users who make it fun or sustainable or both
+for the developer per-se.</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux / Debian
+Edu?</strong></p>
+
+<p>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.</p>
+
+<p>I don'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'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 :</p>
+
+<p>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.
+
+<p>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
+<a href="http://mathforum.org/dr.math/faq/faq.two.trains.html">Ask
+Dr. Math FAQ on The Two Trains problem</a> (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.</p>
+
+<p>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.</p>
+
+<p>2. Loads of crossword-puzzles with reference to subjects: We have
+enormous data sets in Wikipedia and Wikitionary. I don't think it
+should be a big job to design crossword puzzles. Using categories and
+sub-categories it should be doable to have Q&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's input.</p>
+
+<p>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.</p>
+
+<p>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'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.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>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's a tie between
+gnome-flashback and mate.</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>I think it should first start with using specific FOSS apps. in
+whatever environment they are. If it'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't hard to convince on that front.</p>
+
+<p>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.</p>
+
+<p>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't even a page where all those different fonts in the La
+Ipsum format could be tried out for newcomers.</p>
+
+<p>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.</p>
+
+<p>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.
+
+<p>Me and my friends did teach on week-ends in a government school for
+around 2 years, and
+<a href="https://flossexperiences.wordpress.com/2012/10/08/sharings/">gathered
+some experience</a> there. Some of the things we learnt/discovered
+there was :</p>
+
+<ol>
+
+ <li>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.</li>
+
+ <li>They want any activity on the system in accordance to whatever
+ is in the syllabus.</li>
+
+ <li>There are huge barriers both with the English language and at
+ times with objects or whatever. An example, let's say in gcompris
+ you have objects falling down and you have to name them and let's
+ say the falling object is a hat or a fedora hat, this would not be
+ as recognizable as say a
+ <a href="https://en.wikipedia.org/wiki/Puneri_Pagadi">Puneri
+ Pagdi</a> 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.</li>
+
+</ol>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Install_hardware_dependent_packages_using_tasksel__Isenkram_0_7_.html">Install hardware dependent packages using tasksel (Isenkram 0.7)</a></div>
- <div class="date">23rd April 2014</div>
- <div class="body"><p>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
-<a href="http://packages.qa.debian.org/isenkram">my Isenkram
-package</a>. To use it, install the tasksel and isenkram packages and
-run tasksel as user root. You should be presented with a new option,
-"Hardware specific packages (autodetected by isenkram)". When you
-select it, tasksel will install the packages isenkram claim is fit for
-the current hardware, hot pluggable or not.<p>
-
-<p>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
-<tt>/usr/share/tasksel/descs/isenkram.desc</tt> and look like
-this:</p>
-
-<p><blockquote><pre>
-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
-</pre></blockquote></p>
-
-<p>The second part is in
-<tt>/usr/lib/tasksel/packages/for-current-hardware</tt> and look like
-this:</p>
-
-<p><blockquote><pre>
-#!/bin/sh
-#
-(
- isenkram-lookup
- isenkram-autoinstall-firmware -l
-) | sort -u
-</pre></blockquote></p>
-
-<p>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'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.</p>
-
-<p>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
-<a href="http://bugs.debian.org/719837">#719837</a> and
-<a href="http://bugs.debian.org/730704">#730704</a>). The cause is in
-the python-apt code (bug
-<a href="http://bugs.debian.org/745487">#745487</a>), 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.</p>
-
-<p>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
-<a href="https://wiki.debian.org/DEP-11">DEP-11</a>, and
-<a href="https://wiki.debian.org/SummerOfCode2014/Projects#SummerOfCode2014.2FProjects.2FAppStreamDEP11Implementation.AppStream.2FDEP-11_for_the_Debian_Archive">GSoC
-project</a> 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.</p>
-
-<p>If you want your package to map to some specific hardware, either
-add a "Xb-Modaliases" header to your control file like I did in
-<a href="http://packages.qa.debian.org/pymissile">the pymissile
-package</a> or submit a bug report with the details to the isenkram
-package. See also
-<a href="http://people.skolelinux.org/pere/blog/tags/isenkram/">all my
-blog posts tagged isenkram</a> 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.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/I_m_going_to_the_Open_Source_Developers__Conference_Nordic_2015_.html">I'm going to the Open Source Developers' Conference Nordic 2015!</a></div>
+ <div class="date"> 7th April 2015</div>
+ <div class="body"><p>I am happy to let you all know that I'm going to the <a
+href="http://act.osdc.no/osdc2015no/">Open Source Developers'
+Conference Nordic 2015</a>!</p>
+
+<p>It take place Friday 8th to Sunday 10th of May in Oslo next to
+where I work, and I finally got around to submitting
+<a href="http://act.osdc.no/osdc2015no/talk/6192">a talk proposal for
+it</a> (dead link for most people until the talk is accepted). As
+part of my involvement with the
+<a href="http://www.nuug.no/">Norwegian Unix User Group member
+association</a> 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 <a href="http://www.mysociety.org/">mySociety</a> and
+<a href="http://www.holderdeord.no/">Holder de ord</a>. This part is
+named the 'My Society' track in the program. There is still space for
+more talks and participants. I hope to see you there.</p>
+
+<p>Check out <a href="http://act.osdc.no/osdc2015no/talks">the talks
+submitted and accepted so far</a>.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/FreedomBox_milestone___all_packages_now_in_Debian_Sid.html">FreedomBox milestone - all packages now in Debian Sid</a></div>
- <div class="date">15th April 2014</div>
- <div class="body"><p>The <a href="https://wiki.debian.org/FreedomBox">Freedombox
-project</a> 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.</p>
-
-<p>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. :)</p>
-
-<p>Some key packages used by Freedombox are
-<a href="http://packages.qa.debian.org/freedombox-setup">freedombox-setup</a>,
-<a href="http://packages.qa.debian.org/plinth">plinth</a>,
-<a href="http://packages.qa.debian.org/pagekite">pagekite</a>,
-<a href="http://packages.qa.debian.org/tor">tor</a>,
-<a href="http://packages.qa.debian.org/privoxy">privoxy</a>,
-<a href="http://packages.qa.debian.org/owncloud">owncloud</a> and
-<a href="http://packages.qa.debian.org/dnsmasq">dnsmasq</a>. There
-are plans to integrate more packages into the setup. User
-documentation is maintained on the Debian wiki. Please
-<a href="https://wiki.debian.org/FreedomBox/Manual/Jessie">check out
-the manual</a> and help us improve it.</p>
-
-<p>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:</p>
-
-<p><pre>
-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
-</pre></p>
-
-<p>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.</p>
-
-<p>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:</p>
-
-<p><pre>
-url=<a href="http://www.reinholdtsen.name/freedombox/preseed-jessie.dat">http://www.reinholdtsen.name/freedombox/preseed-jessie.dat</a>
-</pre></p>
-
-<p>I have not tested it myself the last few weeks, so I do not know if
-it still work.</p>
-
-<p>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.</p>
-
-<p>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
-<a href="irc://irc.debian.org:6667/%23freedombox">IRC (#freedombox on
-irc.debian.org)</a> and
-<a href="http://lists.alioth.debian.org/mailman/listinfo/freedombox-discuss">the
-mailing list</a> if you want to help make this vision come true.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Proof_reading_the_Norwegian_translation_of_Free_Culture_by_Lessig.html">Proof reading the Norwegian translation of Free Culture by Lessig</a></div>
+ <div class="date"> 4th April 2015</div>
+ <div class="body"><p>During eastern I had some time to continue working on the Norwegian
+<a href="http://www.docbook.org/">docbook</a> version of the 2004 book
+<a href="http://free-culture.cc/">Free Culture</a> 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'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
+<a href="https://github.com/petterreinholdtsen/free-culture-lessig">github</a>
+project pages. You can also check out the
+<a href="https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.pdf?raw=true">PDF</a>,
+<a href="https://github.com/petterreinholdtsen/free-culture-lessig/blob/master/archive/freeculture.nb.epub?raw=true">EPUB</a>
+and HTML version available in the
+<a href="https://github.com/petterreinholdtsen/free-culture-lessig/tree/master/archive">archive
+directory</a>.</p>
+
+<p>Please report typos, bugs and improvements to the github project if
+you find any.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Spr_kkoder_for_POSIX_locale_i_Norge.html">Språkkoder for POSIX locale i Norge</a></div>
- <div class="date">11th April 2014</div>
- <div class="body"><p>For 12 år siden, skrev jeg et lite notat om
-<a href="http://i18n.skolelinux.no/localekoder.txt">bruk av språkkoder
-i Norge</a>. Jeg ble nettopp minnet på dette da jeg fikk spørsmål om
-notatet fortsatt var aktuelt, og tenkte det var greit å repetere hva
-som fortsatt gjelder. Det jeg skrev da er fortsatt like aktuelt.</p>
-
-<p>Når en velger språk i programmer på unix, så velger en blant mange
-språkkoder. For språk i Norge anbefales følgende språkkoder (anbefalt
-locale i parantes):</p>
-
-<p><dl>
-<dt>nb (nb_NO)</dt><dd>Bokmål i Norge</dd>
-<dt>nn (nn_NO)</dt><dd>Nynorsk i Norge</dd>
-<dt>se (se_NO)</dt><dd>Nordsamisk i Norge</dd>
-</dl></p>
-
-<p>Alle programmer som bruker andre koder bør endres.</p>
-
-<p>Språkkoden bør brukes når .po-filer navngis og installeres. Dette
-er ikke det samme som locale-koden. For Norsk Bokmål, så bør filene
-være navngitt nb.po, mens locale (LANG) bør være nb_NO.</p>
-
-<p>Hvis vi ikke får standardisert de kodene i alle programmene med
-norske oversettelser, så er det umulig å gi LANG-variablen ett innhold
-som fungerer for alle programmer.</p>
-
-<p>Språkkodene er de offisielle kodene fra ISO 639, og bruken av dem i
-forbindelse med POSIX localer er standardisert i RFC 3066 og ISO
-15897. Denne anbefalingen er i tråd med de angitte standardene.</p>
-
-<p>Følgende koder er eller har vært i bruk som locale-verdier for
-"norske" språk. Disse bør unngås, og erstattes når de oppdages:</p>
-
-<p><table>
-<tr><td>norwegian</td><td>-> nb_NO</td></tr>
-<tr><td>bokmål </td><td>-> nb_NO</td></tr>
-<tr><td>bokmal </td><td>-> nb_NO</td></tr>
-<tr><td>nynorsk </td><td>-> nn_NO</td></tr>
-<tr><td>no </td><td>-> nb_NO</td></tr>
-<tr><td>no_NO </td><td>-> nb_NO</td></tr>
-<tr><td>no_NY </td><td>-> nn_NO</td></tr>
-<tr><td>sme_NO </td><td>-> se_NO</td></tr>
-</table></p>
-
-<p>Merk at når det gjelder de samiske språkene, at se_NO i praksis
-henviser til nordsamisk i Norge, mens f.eks. smj_NO henviser til
-lulesamisk. Dette notatet er dog ikke ment å gi råd rundt samiske
-språkkoder, der gjør
-<a href="http://www.divvun.no/">Divvun-prosjektet</a> en bedre
-jobb.</p>
-
-<p><strong>Referanser:</strong></p>
-
-<ul>
-
- <li><a href="http://www.rfc-base.org/rfc-3066.html">RFC 3066 - Tags
- for the Identification of Languages</a> (Erstatter RFC 1766)</li>
-
- <li><a href="http://www.loc.gov/standards/iso639-2/langcodes.html">ISO
- 639</a> - Codes for the Representation of Names of Languages</li>
-
- <li><a href="http://std.dkuug.dk/jtc1/sc22/wg20/docs/n897-14652w25.pdf">ISO
- DTR 14652</a> - locale-standard Specification method for cultural
- conventions</li>
-
- <li><a href="http://std.dkuug.dk/jtc1/sc22/wg20/docs/n610.pdf">ISO
- 15897: Registration procedures for cultural elements (cultural
- registry)</a>,
- <a href="http://std.dkuug.dk/jtc1/sc22/wg20/docs/n849-15897wd6.pdf">(nytt
- draft)</a></li>
-
- <li><a href="http://std.dkuug.dk/jtc1/sc22/wg20/">ISO/IEC
- JTC1/SC22/WG20</a> - Gruppen for i18n-standardisering i ISO</li>
-
-<ul>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Frikanalen__Norwegian_TV_channel_for_technical_topics.html">Frikanalen, Norwegian TV channel for technical topics</a></div>
+ <div class="date"> 9th March 2015</div>
+ <div class="body"><p>The <a href="http://www.nuug.no/">Norwegian Unix User Group</a>,
+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
+<a href="http://www.frikanalen.no/">Frikanalen</a> is a useful venue.
+Since a few days ago, when I figured out the
+<a href="http://beta.frikanalen.no/api/">REST API</a> to program the
+<a href="http://beta.frikanalen.tv/guide/">channel time schedule</a>,
+the channel has been filled with NUUG talks, related recordings and
+some Creative Commons licensed TED talks (from archive.org). I fill
+all "leftover bits" on the channel with content from NUUG, which at
+the moment is almost 17 of 24 hours every day.</p>
+
+<p>The list of NUUG videos
+<a href="http://beta.frikanalen.tv/organization/82">uploaded so far</a>
+include things like a
+<a href="http://beta.frikanalen.tv/video/625090">one hour talk by John
+Perry Barlow when he visited Oslo</a>, a presentation of
+<a href="http://beta.frikanalen.tv/video/624275">Haiku, the BeOS
+re-implementation</a>, the
+<a href="http://beta.frikanalen.tv/video/624493">history of FiksGataMi,
+the Norwegian version of FixMyStreet</a>, the good old
+<a href="http://beta.frikanalen.tv/video/623566">Warriors of the net
+video</A> and many others.</p>
+
+<p>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,
+<a href="irc://irc.freenode.net/%23nuug">#nuug on irc.freenode.net</a>
+if you want to help make this happen.</p>
+
+<p>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 <a href="http://www.frikanalen.tv/se">Ogg Theora
+web stream</a> 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.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/S3QL__a_locally_mounted_cloud_file_system___nice_free_software.html">S3QL, a locally mounted cloud file system - nice free software</a></div>
- <div class="date"> 9th April 2014</div>
- <div class="body"><p>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
-<a href="https://bitbucket.org/nikratio/s3ql/">S3QL</a>, a locally
-mounted network backed file system with the features I need.</p>
-
-<p>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.</p>
-
-<p>It is simple to use. I'm using it on Debian Wheezy, where the
-package is included already. So to get started, run <tt>apt-get
-install s3ql</tt>. Next, pick a storage provider. I ended up picking
-Greenqloud, after reading their nice recipe on
-<a href="https://greenqloud.zendesk.com/entries/44611757-How-To-Use-S3QL-to-mount-a-StorageQloud-bucket-on-Debian-Wheezy">how
-to use S3QL with their Amazon S3 service</a>, 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
-<a href="http://www.admin-magazine.com/HPC/Articles/HPC-Cloud-Storage">S3QL
-Filesystem for HPC Storage</a> 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.</p>
-
-<p>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'll refer to it as <tt>bucket-name</tt> below. In addition, one need
-the API login and password, and a locally created password. Store it
-all in ~root/.s3ql/authinfo2 like this:
-
-<p><blockquote><pre>
-[s3c]
-storage-url: s3c://s.greenqloud.com:443/bucket-name
-backend-login: API-login
-backend-password: API-password
-fs-passphrase: local-password
-</pre></blockquote></p>
-
-<p>I create my local passphrase using <tt>pwget 50</tt> 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:</p>
-
-<p><blockquote><pre>
-# 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's guide, especially
-the 'Important Rules to Avoid Loosing Data' 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.
-# </pre></blockquote></p>
-
-<p>The next step is mounting the file system to make the storage available.
-
-<p><blockquote><pre>
-# 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
-#
-</pre></blockquote></p>
-
-<p>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:
-
-<p><blockquote><pre>
-# umount.s3ql /s3ql
-#
-</pre></blockquote></p>
-
-<p>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 "already
-mounted" flag. This is what it look like when processing a working
-file system:</p>
-
-<p><blockquote><pre>
-# 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.
-#
-</pre></blockquote></p>
-
-<p>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 <tt>dd</tt>. 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.</p>
-
-<p>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:</p>
-
-<p><blockquote><pre>
-# 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.
-#
-</pre></blockquote></p>
-
-<p>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:
-
-<p><blockquote><pre>
-# s3qlctrl upload-meta /s3ql
-# s3qlctrl flushcache /s3ql
-#
-</pre></blockquote></p>
-
-<p>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:</p>
-
-<p><blockquote><pre>
-# 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)
-#
-</pre></blockquote></p>
-
-<p>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
-<a href="https://www.greenqloud.com/">Greenqloud</a>,
-<a href="http://drive.google.com/">Google Drive</a>,
-<a href="http://aws.amazon.com/s3/">Amazon S3 web serivces</a>,
-<a href="http://www.rackspace.com/">Rackspace</a> and
-<a href="http://crowncloud.net/">Crowncloud</A>. 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.</p>
-
-<p>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
-"<a href="http://www.lanl.gov/orgs/adtsc/publications/science_highlights_2013/docs/pg68_69.pdf">An
-Innovative Parallel Cloud Storage System using OpenStack’s SwiftObject
-Store and Transformative Parallel I/O Approach</a>" by Hsing-Bung
-Chen, Benjamin McClelland, David Sherrill, Alfred Torrez, Parks Fields
-and Pamela Smith. Please have a look.</p>
-
-<p>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
-<a href="http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html">my
-test code to check file system semantics</a>, 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.</p>
-
-<p>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
-<a href="http://www.tarsnap.com/">Tarsnap service</a>, 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.</p>
-
-<p>As usual, if you use Bitcoin and want to show your support of my
-activities, please send Bitcoin donations to my address
-<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/The_Citizenfour_documentary_on_the_Snowden_confirmations_to_Norway.html">The Citizenfour documentary on the Snowden confirmations to Norway</a></div>
+ <div class="date">28th February 2015</div>
+ <div class="body"><p>Today I was happy to learn that the documentary
+<a href="https://citizenfourfilm.com/">Citizenfour</a> by
+<a href="https://en.wikipedia.org/wiki/Laura_Poitras">Laura Poitras</a>
+finally will show up in Norway. According to the magazine
+<a href="http://montages.no/">Montages</a>, a deal has finally been
+made for
+<a href="http://montages.no/nyheter/snowden-dokumentaren-citizenfour-far-norsk-kinodistribusjon/">Cinema
+distribution in Norway</a> and the movie will have its premiere soon.
+This is great news. As part of my involvement with
+<a href="http://www.nuug.no/">the Norwegian Unix User Group</a>, me and
+a friend have
+<a href="http://www.nuug.no/news/Dokumentar_om_Snowdenbekreftelsene_til_Norge_.shtml">tried
+to get the movie to Norway</a> ourselves, but obviously
+<a href="http://www.nuug.no/news/Dokumentar_om_Snowdenbekreftelsene_endelig_til_Norge_.shtml">we
+were too late</a> 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.
+<a href="https://www.youtube.com/watch?v=XiGwAvd5mvM">The trailer</a>
+can be seen on youtube, if you are curious what kind of film this
+is.</p>
+
+<p>The whistle blower Edward Snowden really deserve political asylum
+here in Norway, but I am afraid he would not be safe.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/EU_domstolen_bekreftet_i_dag_at_datalagringsdirektivet_er_ulovlig.html">EU-domstolen bekreftet i dag at datalagringsdirektivet er ulovlig</a></div>
- <div class="date"> 8th April 2014</div>
- <div class="body"><p>I dag kom endelig avgjørelsen fra EU-domstolen om
-datalagringsdirektivet, som ikke overraskende ble dømt ulovlig og i
-strid med borgernes grunnleggende rettigheter. Hvis du lurer på hva
-datalagringsdirektivet er for noe, så er det
-<a href="http://tv.nrk.no/program/koid75005313/tema-dine-digitale-spor-datalagringsdirektivet">en
-flott dokumentar tilgjengelig hos NRK</a> som jeg tidligere
-<a href="http://people.skolelinux.org/pere/blog/Dokumentaren_om_Datalagringsdirektivet_sendes_endelig_p__NRK.html">har
-anbefalt</a> alle å se.</p>
-
-<p>Her er et liten knippe nyhetsoppslag om saken, og jeg regner med at
-det kommer flere ut over dagen. Flere kan finnes
-<a href="http://www.mylder.no/?drill=datalagringsdirektivet&intern=1">via
-mylder</a>.</p>
-
-<p><ul>
-
-<li><a href="http://e24.no/digital/eu-domstolen-datalagringsdirektivet-er-ugyldig/22879592">EU-domstolen:
-Datalagringsdirektivet er ugyldig</a> - e24.no 2014-04-08
-
-<li><a href="http://www.aftenposten.no/nyheter/iriks/EU-domstolen-Datalagringsdirektivet-er-ulovlig-7529032.html">EU-domstolen:
-Datalagringsdirektivet er ulovlig</a> - aftenposten.no 2014-04-08
-
-<li><a href="http://www.aftenposten.no/nyheter/iriks/politikk/Krever-DLD-stopp-i-Norge-7530086.html">Krever
-DLD-stopp i Norge</a> - aftenposten.no 2014-04-08
-
-<li><a href="http://www.p4.no/story.aspx?id=566431">Apenes: - En
-gledens dag</a> - p4.no 2014-04-08
-
-<li><a href="http://www.nrk.no/norge/_-datalagringsdirektivet-er-ugyldig-1.11655929">EU-domstolen:
-– Datalagringsdirektivet er ugyldig</a> - nrk.no 2014-04-08</li>
-
-<li><a href="http://www.vg.no/nyheter/utenriks/data-og-nett/eu-domstolen-datalagringsdirektivet-er-ugyldig/a/10130280/">EU-domstolen:
-Datalagringsdirektivet er ugyldig</a> - vg.no 2014-04-08</li>
-
-<li><a href="http://www.dagbladet.no/2014/04/08/nyheter/innenriks/datalagringsdirektivet/personvern/32711646/">-
-Vi bør skrote hele datalagringsdirektivet</a> - dagbladet.no
-2014-04-08</li>
-
-<li><a href="http://www.digi.no/928137/eu-domstolen-dld-er-ugyldig">EU-domstolen:
-DLD er ugyldig</a> - digi.no 2014-04-08</li>
-
-<li><a href="http://www.irishtimes.com/business/sectors/technology/european-court-declares-data-retention-directive-invalid-1.1754150">European
-court declares data retention directive invalid</a> - irishtimes.com
-2014-04-08</li>
-
-<li><a href="http://www.reuters.com/article/2014/04/08/us-eu-data-ruling-idUSBREA370F020140408?feedType=RSS">EU
-court rules against requirement to keep data of telecom users</a> -
-reuters.com 2014-04-08</li>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/The_Norwegian_open_channel_Frikanalen___24x7_on_the_Internet.html">The Norwegian open channel Frikanalen - 24x7 on the Internet</a></div>
+ <div class="date">25th February 2015</div>
+ <div class="body"><p>The Norwegian nationwide open channel
+<a href="http://www.frikanalen.no/">Frikanalen</a> 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 <ahref="https://github.com/Frikanalen">Free
+Software</a>, providing <ahref="http://beta.frikanalen.tv/api">a REST
+api</a> 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
+<a href="http://www.frikanalen.tv/se">the Frikanalen web site now</a>. And
+since a few days ago, the channel is also available
+via <a href="https://www.uninett.no/iptv-tilgang">multicast on
+UNINETT</a>, available for those using IPTV TVs and set-top boxes in
+the Norwegian National Research and Education network.</p>
+
+<p>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.</p>
+<ul>
+ <li><a href="http://video.nuug.no/frikanalen.ogv">http://video.nuug.no/frikanalen.ogv</a></li>
+ <li>udp://@224.17.43.129:1234</li>
</ul>
-</p>
-<p>Jeg synes det er veldig fint at nok en stemme slår fast at
-totalitær overvåkning av befolkningen er uakseptabelt, men det er
-fortsatt like viktig å beskytte privatsfæren som før, da de
-teknologiske mulighetene fortsatt finnes og utnyttes, og jeg tror
-innsats i prosjekter som
-<a href="https://wiki.debian.org/FreedomBox">Freedombox</a> og
-<a href="http://www.dugnadsnett.no/">Dugnadsnett</a> er viktigere enn
-noen gang.</p>
-
-<p><strong>Update 2014-04-08 12:10</strong>: Kronerullingen for å
-stoppe datalagringsdirektivet i Norge gjøres hos foreningen
-<a href="http://www.digitaltpersonvern.no/">Digitalt Personvern</a>,
-som har samlet inn 843 215,- så langt men trenger nok mye mer hvis
-
-ikke Høyre og Arbeiderpartiet bytter mening i saken. Det var
-<a href="http://www.holderdeord.no/parliament-issues/48650">kun
-partinene Høyre og Arbeiderpartiet</a> som stemte for
-Datalagringsdirektivet, og en av dem må bytte mening for at det skal
-bli flertall mot i Stortinget. Se mer om saken
-<a href="http://www.holderdeord.no/issues/69-innfore-datalagringsdirektivet">Holder
-de ord</a>.</p>
+<p>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:</p>
+
+<blockquote><pre>
+./ffmpeg2theora.linux <OBE_gemini_URL.ts> -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 <pw> /frikanalen.ogv
+</pre></blockquote>
+
+<p>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.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/dld">dld</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/ReactOS_Windows_clone___nice_free_software.html">ReactOS Windows clone - nice free software</a></div>
- <div class="date"> 1st April 2014</div>
- <div class="body"><p>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.</p>
-
-<p><a href="http://www.reactos.org/">ReactOS</a> 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 <a href="http://www.winehq.org/">the Wine
-project</a>, which make it possible to run Windows binaries on
-Linux.</p>
-
-<p>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
-<a href="http://www.reactos.org/screenshots">screen shots on the
-project web site</a> for an idea what it look like (it looks just like
-Windows before metro).</p>
-
-<p>I do not use ReactOS myself, preferring Linux and Unix like
-operating systems. I'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'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
-<a href="http://www.reactos.org/download">downloading</a> the
-installation CD, the live CD or the preinstalled virtual machine
-image.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/En_enklere_Osloskolehverdag_med_automatisk_sjekk_av_Fronter.html">En enklere Osloskolehverdag med automatisk sjekk av Fronter</a></div>
+ <div class="date">12th February 2015</div>
+ <div class="body"><p>En stund nå har jeg vært nødt til å forholde meg til
+<a href="https://fronter.com/osloskoler/">Fronter</a>, en nettløsning
+Osloskolen bruker for kontakt mellom hjem og skole. Løsningen
+imponerer ikke, og det er lagt opp til at vi foreldre skal logge inn
+regelmessig for å se om noe har endret seg. Idéen om å la folk stikke
+innom nettsider for å se om det har skjedd endringer er så idiotisk at
+jeg har lett etter et alternativ. Fronterløsningen har en innebygget
+løsning der en kan abonnere på forsiden (som viser en oppsummering av
+det en har tilgang til), og få tilsendt en kopi hver natt, men det
+fjerner jo bare behovet for å stikke innom, ikke den idiotiske ideen
+om at folk skal huske hvordan nettsiden så ut sist og oppdage hva som
+er endret.</p>
+
+<p>For å gjøre livet enklere har jeg derfor brukt litt tid på å lage
+et program som kobler seg opp og sjekker etter endringer automatisk,
+slik at jeg kan få beskjed fra datamaskinen når noe endrer seg i
+stedet for å forsøke å finne ut av det selv. I går ble scriptet
+brukbart, og jeg er dermed klar til å dele det med deg.</p>
+
+<p>Jeg startet med å skrive programmet i Python, og hadde en versjon
+som logget inn og hentet ned enkeltsider fra Fronter. Men
+Fronter-websidene suger golfballer gjennom en hageslange, med
+uleselig HTML, flere nivåer av iframes og en struktur på innholdet som
+er svært vanskelig å finne ut av, så jeg ga til slutt opp lxml-parsing
+med Python og forsøkte meg med WWW::Mechanize for Perl som jeg kjente
+fra før. I ettertid har jeg oppdaget at WWW:Mechanize også finnes for
+Python, så jeg kunne antagelig droppet språkbyttet. Men da jeg
+oppdaget det hadde jeg kommet så langt med Perl-utgaven, så jeg hoppet
+ikke tilbake.</p>
+
+<p>For å logge inn i Fronter besøker en enten skolens websider eller
+den sentrale innloggingsiden <tt>https://fronter.com/osloskoler/</tt>.
+Perl-koden for å logge inn ser slik ut:</p>
+
+<pre>
+my $mech = WWW::Mechanize->new();
+$mech->get('https://fronter.com/osloskoler/');
+$mech->submit_form(fields => {
+ username => $username,
+ password => $password,
+} );
+</pre>
+
+<p>Neste steg er å få oversikt over hvilke «rom» en har tilgang til.
+På vår skole er det rom for skolen, biblioteket, elevrådet,
+aktivitetsskolen og klasser der en har unger, og dette vil være
+forskjellig fra person til person. Etter å ha romstert rundt i
+Fronter-grensesnittet endel kom jeg over en grei HTML-side med
+oversikt over rommene,
+<tt>https://fronter.com/osloskoler/adm/projects.phtml?mode=displayRoomchooser</tt>,
+så jeg bruker denne til å hente ut romoversikt med rom-ID.</p>
+
+<pre>
+my %room;
+$mech->get('https://fronter.com/osloskoler/adm/projects.phtml?mode=displayRoomchooser');
+for my $link ($mech->links()) {
+ my $url = $link->url();
+ if ($url =~ m%/links/list_files.phtml\?edit=(\d+)$%) {
+ $room{$link->text()} = $1;
+ }
+}
+</pre>
+
+<p>Når en har rom-ID kan en slå opp websiden for rommet, som starter
+på
+<tt>https://fronter.com/osloskoler/contentframeset.phtml?goto_prjid=$ROMID</tt>
+(der $ROMID byttes ut med rom-ID-tallet). Det gir en side med
+iframes, og en må tre nivåer ned i iframes før en får tak i
+HTML-informasjonen som vises frem når en ser på det aktuelle rommet.
+Her ga jeg opp den robuste parsingen og hardkodet endel URL-er som i
+stedet bør spores opp maskinelt. HTML-informasjonen som vises lagres
+i en fil etter at økt- og innloggings-nøkkel er fjernet og deretter
+bruker jeg <tt>lynx --dump --nolist</tt> for å hente ut en tekstlig
+utgave av websiden. Denne tekstlige utgaven sammenlignes med forrige
+versjon og oversikt over endringer kan så sendes ut på egnet vis.</p>
+
+<p>Jeg valgte å bruke git til å holde rede på endringer, så jeg
+sjekker inn HTML og tekst-utgaver i git og bruker git til å vise frem
+endringene i tekstutgavene. Programvaren for å gjøre dette er testet
+på Debian GNU/Linux og kan
+<a href="https://github.com/petterreinholdtsen/fronter-scraper-oslo">lastes
+ned fra github</a>.</p>
+
+<p>For å bruke dette selv, kjør følgende kommandoer på din
+Debian-maskin (forutsetter sudo-tilgang for installasjon av
+programvare):</p>
+
+<pre>
+sudo apt-get install git lynx-cur libio-prompter-perl libwww-mechanize-perl \
+ libconfig-inifiles-perl
+git clone https://github.com/petterreinholdtsen/fronter-scraper-oslo
+cd fronter-scraper-oslo
+./update-git
+</pre>
+
+<p>Det gjenstår endel, men systemet er allerede nyttig for meg. Jeg
+ønsker at systemet også skal laste ned PDF-er og slikt som er lagt ut
+for nedlasting på sidene, slik at f.eks. ukeplaner kommer inn i
+git-arkivet mitt automatisk og jeg får automatisk beskjed når ny
+ukeplan er lagt ut. Kanskje du kan bidra med å få det på plass, eller
+kanskje du har andre ting du vil fikse? Jeg tar gjerne imot endringer
+og forbedringer. Det er mye som kan gjøres bedre, og scriptet er ikke
+veldig robust mot endringer hos nettsidene til Fronter. Jeg regner
+dermed med at det vil trengs oppdateringer jevnlig etter hvert som
+Fronter-løsningen endrer seg.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Roger_Marsal.html">Debian Edu interview: Roger Marsal</a></div>
- <div class="date">30th March 2014</div>
- <div class="body"><p><a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a>
-keep gaining new users. Some weeks ago, a person showed up on IRC,
-<a href="irc://irc.debian.org/#debian-edu">#debian-edu</a>, with a
-wish to contribute, and I managed to get a interview with this great
-contributor Roger Marsal to learn more about his background.</p>
-
-<p><strong>Who are you, and how do you spend your days?</strong></p>
-
-<p>My name is Roger Marsal, I'm 27 years old (1986 generation) and I
-live in Barcelona, Spain. I've got a strong business background and I
-work as a patrimony manager and as a real estate agent. Additionally,
-I've co-founded a British based tech company that is nowadays on the
-last development phase of a new social networking concept.</p>
-
-<p>I'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.</p>
-
-<p>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.</p>
-
-<p><strong>How did you get in contact with the Skolelinux / Debian Edu
-project?</strong></p>
-
-<p>I discovered the <a href="http://www.ltsp.org/">LTSP</a> advantages
-with "Ubuntu 12.04 alternate install" 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.</p>
-
-<p><strong>What do you see as the advantages of Skolelinux / Debian
-Edu?</strong></p>
-
-<p>I found a main advantage in that, once you know "the tips and
-tricks", a new installation just works out of the box. It's the most
-complete alternative I'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.</p>
-
-<p><strong>What do you see as the disadvantages of Skolelinux / Debian
-Edu?</strong></p>
-
-<p>I found two main disadvantages.</p>
-
-<p>I'm not an expert but I've got notions and I had to spent a considerable
-amount of time trying to bring up a standard network topology. I'm quite
-stubborn and I just worked until I did but I'm sure many people with few
-resources (not big schools, but academies for example) would have switched
-or dropped.</p>
-
-<p>It'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.</p>
-
-<p><strong>Which free software do you use daily?</strong></p>
-
-<p>I use Debian, Firefox, Okular, Inkscape, LibreOffice and
-Virtualbox.</p>
-
-
-<p><strong>Which strategy do you believe is the right one to use to
-get schools to use free software?</strong></p>
-
-<p>I don't think there is a need for a particular strategy. The free
-attribute in both "freedom" and "no price" meanings is what will
-really bring free software to schools. In my experience I can think of
-the <a href="http://www.r-project.org/">"R" statistical language</a>; a
-few years a ago was an extremely nerd tool for university people.
-Today it'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'm sure schools will be one of the
-first scenarios where this will happen.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Nude_body_scanner_now_present_on_Norwegian_airport.html">Nude body scanner now present on Norwegian airport</a></div>
+ <div class="date">10th February 2015</div>
+ <div class="body"><p>Aftenposten, one of the largest newspapers in Norway, today report
+that
+<a href="http://www.aftenposten.no/reise/Slik-skannes-kroppen-din-i-fremtidens-sikkerhetskontroll-490666_1.snd">three
+of the nude body scanners now is put to use at Gardermoen</a>, 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 "now
+travelers can move past the security check point faster and more
+efficiently", 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.</p>
+
+<p>Wikipedia have a more on
+<a href="https://en.wikipedia.org/wiki/Full_body_scanner">Full body
+scanners</a>, including example images and a summary of the
+controversy about these scanners.</p>
+
+<p>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.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>.
</div>
<h2>Archive</h2>
<ul>
+<li>2015
+<ul>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (1)</a></li>
+
+</ul></li>
+
<li>2014
<ul>
<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
-<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (1)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
</ul></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (8)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (14)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (15)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (98)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (109)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (146)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (153)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (15)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (10)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (13)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (247)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (276)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (21)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (12)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (15)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (8)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (11)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (14)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (40)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (9)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (10)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (18)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (19)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (7)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (28)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (32)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (246)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (260)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (162)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (176)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (11)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (16)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (46)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (51)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (72)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (84)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (1)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (2)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (9)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (40)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (41)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (4)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (44)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (46)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (3)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (9)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (25)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (31)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (2)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (8)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (42)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (50)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (32)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (35)</a></li>
</ul>
projects / homepage.git / blobdiff