X-Git-Url: http://pere.pagekite.me/gitweb/homepage.git/blobdiff_plain/cb70d7595fd628fe73869f608e32f76da02287ae..370ca01630bcc562f24d76ef1cdf4b95d77f9804:/blog/index.html diff --git a/blog/index.html b/blog/index.html index 4e7e043363..3e773a0c13 100644 --- a/blog/index.html +++ b/blog/index.html @@ -20,47 +20,37 @@
-
Hvordan enkelt laste ned filmer fra NRK med den "nye" løsningen
-
16th June 2014
-

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 -min -oppskrift fra 2011 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 -youtube-dl. Støtten i -youtube-dl kom -inn for 23 dager siden og -versjonen i -Debian 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 -problemet til -utviklerne, og antar de får fikset det snart.

- -

Dermed er alt klart til å laste ned dokumentarene om -USAs -hemmelige avlytting og -Selskapene -bak USAs avlytting, i tillegg til -intervjuet -med Edward Snowden gjort av den tyske tv-kanalen ARD. Anbefaler -alle å se disse, sammen med -foredraget -til Jacob Appelbaum på siste CCC-konferanse, for å forstå mer om -hvordan overvåkningen av borgerne brer om seg.

- -

Takk til gode venner på foreningen NUUGs IRC-kanal -#nuug på irc.freenode.net -for tipsene som fikk meg i mål.

+ +
25th September 2014
+

I use the lsdvd tool +to handle my fairly large DVD collection. It is a nice command line +tool to get details about a DVD, like title, tracks, track length, +etc, in XML, Perl or human readable format. But lsdvd have not seen +any new development since 2006 and had a few irritating bugs affecting +its use with some DVDs. Upstream seemed to be dead, and in January I +sent a small probe asking for a version control repository for the +project, without any reply. But I use it regularly and would like to +get an updated version +into Debian. So two weeks ago I tried harder to get in touch with +the project admin, and after getting a reply from him explaining that +he was no longer interested in the project, I asked if I could take +over. And yesterday, I became project admin.

+ +

I've been in touch with a Gentoo developer and the Debian +maintainer interested in joining forces to maintain the upstream +project, and I hope we can get a new release out fairly quickly, +collecting the patches spread around on the internet into on place. +I've added the relevant Debian patches to the freshly created git +repository, and expect the Gentoo patches to make it too. If you got +a DVD collection and care about command line tools, check out +the git source and join +the project mailing +list. :)

- Tags: multimedia, norsk, video, web. + Tags: debian, english, multimedia.
@@ -68,59 +58,263 @@ for tipsene som fikk meg i mål.

- -
29th May 2014
-

Dear lazyweb. I'm planning to set up a small Raspberry Pi computer -in my car, connected to -a -small screen 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 -"Carputer". But I -wonder if someone already created a good free software solution for -such car computer.

- -

This is my current wish list for such system:

- -
    - -
  • Work on Raspberry Pi.
  • - -
  • 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 - Openstreetmap or OCR - info gathered from a dashboard camera.
  • - -
  • Track automatic toll road passes and their cost, show total spent - and make it possible to calculate toll costs for planned - route.
  • - -
  • Collect GPX tracks for use with OpenStreetMap.
  • - -
  • Automatically detect and use any wireless connection to connect - to home server. Try IP over DNS - (iodine) or ICMP - (Hans) if direct - connection do not work.
  • - -
  • Set up mesh network to talk to other cars with the same system, - or some standard car mesh protocol.
  • - -
  • Warn when approaching speed cameras and speed camera ranges - (speed calculated between two cameras).
  • - -
  • Suport dashboard/front facing camera to discover speed limits and - run OCR to track registration number of passing cars.
  • - -
- -

If you know of any free software car computer system supporting -some or all of these features, please let me know.

+ +
21st September 2014
+

Rundt omkring i Oslo og Østlandsområdet henger det bokser over +veiene som jeg har lurt på hva gjør. De har ut fra plassering og +vinkling sett ut som bokser som sniffer ut et eller annet fra +forbipasserende trafikk, men det har vært uklart for meg hva det er de +leser av. Her om dagen tok jeg bilde av en slik boks som henger under +ei +skibru på Sollihøgda:

+ +

+ +

Boksen er tydelig merket «Kapsch >>>», logoen til +det sveitsiske selskapet Kapsch som +blant annet lager sensorsystemer for veitrafikk. Men de lager mye +forskjellig, og jeg kjente ikke igjen boksen på utseendet etter en +kjapp titt på produktlista til selskapet.

+ +

I og med at boksen henger over veien E16, en riksvei vedlikeholdt +av Statens Vegvesen, så antok jeg at det burde være mulig å bruke +REST-API-et som gir tilgang til vegvesenets database over veier, +skilter og annet veirelatert til å finne ut hva i alle dager dette +kunne være. De har både +en +datakatalog og +et +søk, der en kan søke etter ulike typer oppføringer innen for et +gitt geografisk område. Jeg laget et enkelt shell-script for å hente +ut antall av en gitt type innenfor området skibrua dekker, og listet +opp navnet på typene som ble funnet. Orket ikke slå opp hvordan +URL-koding av aktuelle strenger kunne gjøres mer generisk, og brukte +en stygg sed-linje i stedet.

+ +
+#!/bin/sh
+urlmap() {
+    sed \
+    -e 's/  / /g'   -e 's/{/%7B/g'  \
+    -e 's/}/%7D/g'  -e 's/\[/%5B/g' \
+    -e 's/\]/%5D/g' -e 's/ /%20/g'  \
+    -e 's/,/%2C/g'  -e 's/\"/%22/g' \
+    -e 's/:/%3A/g'
+}
+
+lookup() {
+    url="$1"
+    curl -s -H 'Accept: application/vnd.vegvesen.nvdb-v1+xml' \
+       "https://www.vegvesen.no/nvdb/api$url" | xmllint --format -
+}
+
+for id in $(seq 1 874) ; do
+    search="{
+  lokasjon: {
+    bbox: \"10.34425,59.96386,10.34458,59.96409\",
+    srid: \"WGS84\"
+  },
+   objektTyper: [{
+     id: $id, antall: 10
+   }]
+}"
+
+    query=/sok?kriterie=$(echo $search | urlmap)
+    if lookup "$query" |
+    grep -q '<totaltAntallReturnert>0<'
+    then
+    :
+    else
+    echo $id
+    lookup "/datakatalog/objekttyper/$id" |grep '^  <navn>'
+    fi
+done
+
+exit 0
+
+ +Aktuelt ID-område 1-874 var riktig i datakatalogen da jeg laget +scriptet. Det vil endre seg over tid. Skriptet listet så opp +aktuelle typer i og rundt skibrua: + +
+5
+  <navn>Rekkverk</navn>
+14
+  <navn>Rekkverksende</navn>
+47
+  <navn>Trafikklomme</navn>
+49
+  <navn>Trafikkøy</navn>
+60
+  <navn>Bru</navn>
+79
+  <navn>Stikkrenne/Kulvert</navn>
+80
+  <navn>Grøft, åpen</navn>
+86
+  <navn>Belysningsstrekning</navn>
+95
+  <navn>Skiltpunkt</navn>
+96
+  <navn>Skiltplate</navn>
+98
+  <navn>Referansestolpe</navn>
+99
+  <navn>Vegoppmerking, langsgående</navn>
+105
+  <navn>Fartsgrense</navn>
+106
+  <navn>Vinterdriftsstrategi</navn>
+172
+  <navn>Trafikkdeler</navn>
+241
+  <navn>Vegdekke</navn>
+293
+  <navn>Breddemåling</navn>
+301
+  <navn>Kantklippareal</navn>
+318
+  <navn>Snø-/isrydding</navn>
+445
+  <navn>Skred</navn>
+446
+  <navn>Dokumentasjon</navn>
+452
+  <navn>Undergang</navn>
+528
+  <navn>Tverrprofil</navn>
+532
+  <navn>Vegreferanse</navn>
+534
+  <navn>Region</navn>
+535
+  <navn>Fylke</navn>
+536
+  <navn>Kommune</navn>
+538
+  <navn>Gate</navn>
+539
+  <navn>Transportlenke</navn>
+540
+  <navn>Trafikkmengde</navn>
+570
+  <navn>Trafikkulykke</navn>
+571
+  <navn>Ulykkesinvolvert enhet</navn>
+572
+  <navn>Ulykkesinvolvert person</navn>
+579
+  <navn>Politidistrikt</navn>
+583
+  <navn>Vegbredde</navn>
+591
+  <navn>Høydebegrensning</navn>
+592
+  <navn>Nedbøyningsmåling</navn>
+597
+  <navn>Støy-luft, Strekningsdata</navn>
+601
+  <navn>Oppgravingsdata</navn>
+602
+  <navn>Oppgravingslag</navn>
+603
+  <navn>PMS-parsell</navn>
+604
+  <navn>Vegnormalstrekning</navn>
+605
+  <navn>Værrelatert strekning</navn>
+616
+  <navn>Feltstrekning</navn>
+617
+  <navn>Adressepunkt</navn>
+626
+  <navn>Friksjonsmåleserie</navn>
+629
+  <navn>Vegdekke, flatelapping</navn>
+639
+  <navn>Kurvatur, horisontalelement</navn>
+640
+  <navn>Kurvatur, vertikalelement</navn>
+642
+  <navn>Kurvatur, vertikalpunkt</navn>
+643
+  <navn>Statistikk, trafikkmengde</navn>
+647
+  <navn>Statistikk, vegbredde</navn>
+774
+  <navn>Nedbøyningsmåleserie</navn>
+775
+  <navn>ATK, influensstrekning</navn>
+794
+  <navn>Systemobjekt</navn>
+810
+  <navn>Vinterdriftsklasse</navn>
+821
+  <navn>Funksjonell vegklasse</navn>
+825
+  <navn>Kurvatur, stigning</navn>
+838
+  <navn>Vegbredde, beregnet</navn>
+862
+  <navn>Reisetidsregistreringspunkt</navn>
+871
+  <navn>Bruksklasse</navn>
+
+ +

Av disse ser ID 775 og 862 mest relevant ut. ID 775 antar jeg +refererer til fotoboksen som står like ved brua, mens +«Reisetidsregistreringspunkt» kanskje kan være boksen som henger der. +Hvordan finner jeg så ut hva dette kan være for noe. En titt på +datakatalogsiden +for ID 862/Reisetidsregistreringspunkt viser at det er finnes 53 +slike målere i Norge, og hvor de er plassert, men gir ellers få +detaljer. Det er plassert 40 på østlandet og 13 i Trondheimsregionen. +Men siden nevner «AutoPASS», og hvis en slår opp oppføringen på +Sollihøgda nevner den «Ciber AS» som ID for eksternt system. (Kan det +være snakk om +Ciber +Norge AS, et selskap eid av Ciber Europe Bv?) Et nettsøk på + «Ciber AS autopass» fører meg til en artikkel fra NRK Trøndelag i + 2013 med tittel +«Sjekk +dette hvis du vil unngå kø». Artikkelen henviser til vegvesenets +nettside +reisetider.no +som har en +kartside +for Østlandet som viser at det måles mellom Sandvika og Sollihøgda. +Det kan dermed se ut til at jeg har funnet ut hva boksene gjør.

+ +

Hvis det stemmer, så er dette bokser som leser av AutoPASS-ID-en +til alle passerende biler med AutoPASS-brikke, og dermed gjør det mulig +for de som kontrollerer boksene å holde rede på hvor en gitt bil er +når den passerte et slikt målepunkt. NRK-artikkelen forteller at +denne informasjonen i dag kun brukes til å koble to +AutoPASS-brikkepasseringer passeringer sammen for å beregne +reisetiden, og at bruken er godkjent av Datatilsynet. Det er desverre +ikke mulig for en sjåfør som passerer under en slik boks å kontrollere +at AutoPASS-ID-en kun brukes til dette i dag og i fremtiden.

+ +

I tillegg til denne type AutoPASS-sniffere vet jeg at det også +finnes mange automatiske stasjoner som tar betalt pr. passering (aka +bomstasjoner), og der lagres informasjon om tid, sted og bilnummer i +10 år. Finnes det andre slike sniffere plassert ut på veiene?

+ +

Personlig har jeg valgt å ikke bruke AutoPASS-brikke, for å gjøre +det vanskeligere og mer kostbart for de som vil invadere privatsfæren +og holde rede på hvor bilen min beveger seg til enhver tid. Jeg håper +flere vil gjøre det samme, selv om det gir litt høyere private +utgifter (dyrere bompassering). Vern om privatsfæren koster i disse +dager.

+ +

Takk til Jan Kristian Jensen i Statens Vegvesen for tips om +dokumentasjon på vegvesenets REST-API.

- Tags: english. + Tags: kart, norsk, personvern, rfid, surveillance.
@@ -128,54 +322,215 @@ some or all of these features, please let me know.

- -
29th April 2014
-

I've been following the Gnash -project 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 -Lightspark 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.

- -

A few months ago, I started looking at -Coverity, 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.

- -

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.

- -

If you want to help out, you find us on -the -gnash-dev mailing list and on -the #gnash channel on -irc.freenode.net IRC server.

+ +
16th September 2014
+

The Debian installer could be +a lot quicker. When we install more than 2000 packages in +Skolelinux / Debian Edu using +tasksel in the installer, unpacking the binary packages take forever. +A part of the slow I/O issue was discussed in +bug #613428 about too +much file system sync-ing done by dpkg, which is the package +responsible for unpacking the binary packages. Other parts (like code +executed by postinst scripts) might also sync to disk during +installation. All this sync-ing to disk do not really make sense to +me. If the machine crash half-way through, I start over, I do not try +to salvage the half installed system. So the failure sync-ing is +supposed to protect against, hardware or system crash, is not really +relevant while the installer is running.

+ +

A few days ago, I thought of a way to get rid of all the file +system sync()-ing in a fairly non-intrusive way, without the need to +change the code in several packages. The idea is not new, but I have +not heard anyone propose the approach using dpkg-divert before. It +depend on the small and clever package +eatmydata, which +uses LD_PRELOAD to replace the system functions for syncing data to +disk with functions doing nothing, thus allowing programs to live +dangerous while speeding up disk I/O significantly. Instead of +modifying the implementation of dpkg, apt and tasksel (which are the +packages responsible for selecting, fetching and installing packages), +it occurred to me that we could just divert the programs away, replace +them with a simple shell wrapper calling +"eatmydata $program $@", to get the same effect. +Two days ago I decided to test the idea, and wrapped up a simple +implementation for the Debian Edu udeb.

+ +

The effect was stunning. In my first test it reduced the running +time of the pkgsel step (installing tasks) from 64 to less than 44 +minutes (20 minutes shaved off the installation) on an old Dell +Latitude D505 machine. I am not quite sure what the optimised time +would have been, as I messed up the testing a bit, causing the debconf +priority to get low enough for two questions to pop up during +installation. As soon as I saw the questions I moved the installation +along, but do not know how long the question were holding up the +installation. I did some more measurements using Debian Edu Jessie, +and got these results. The time measured is the time stamp in +/var/log/syslog between the "pkgsel: starting tasksel" and the +"pkgsel: finishing up" lines, if you want to do the same measurement +yourself. In Debian Edu, the tasksel dialog do not show up, and the +timing thus do not depend on how quickly the user handle the tasksel +dialog.

+ +

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Machine/setupOriginal taskselOptimised taskselReduction
Latitude D505 Main+LTSP LXDE64 min (07:46-08:50)<44 min (11:27-12:11)>20 min 18%
Latitude D505 Roaming LXDE57 min (08:48-09:45)34 min (07:43-08:17)23 min 40%
Latitude D505 Minimal22 min (10:37-10:59)11 min (11:16-11:27)11 min 50%
Thinkpad X200 Minimal6 min (08:19-08:25)4 min (08:04-08:08)2 min 33%
Thinkpad X200 Roaming KDE19 min (09:21-09:40)15 min (10:25-10:40)4 min 21%

+ +

The test is done using a netinst ISO on a USB stick, so some of the +time is spent downloading packages. The connection to the Internet +was 100Mbit/s during testing, so downloading should not be a +significant factor in the measurement. Download typically took a few +seconds to a few minutes, depending on the amount of packages being +installed.

+ +

The speedup is implemented by using two hooks in +Debian +Installer, the pre-pkgsel.d hook to set up the diverts, and the +finish-install.d hook to remove the divert at the end of the +installation. I picked the pre-pkgsel.d hook instead of the +post-base-installer.d hook because I test using an ISO without the +eatmydata package included, and the post-base-installer.d hook in +Debian Edu can only operate on packages included in the ISO. The +negative effect of this is that I am unable to activate this +optimization for the kernel installation step in d-i. If the code is +moved to the post-base-installer.d hook, the speedup would be larger +for the entire installation.

+ +

I've implemented this in the +debian-edu-install +git repository, and plan to provide the optimization as part of the +Debian Edu installation. If you want to test this yourself, you can +create two files in the installer (or in an udeb). One shell script +need do go into /usr/lib/pre-pkgsel.d/, with content like this:

+ +

+#!/bin/sh
+set -e
+. /usr/share/debconf/confmodule
+info() {
+    logger -t my-pkgsel "info: $*"
+}
+error() {
+    logger -t my-pkgsel "error: $*"
+}
+override_install() {
+    apt-install eatmydata || true
+    if [ -x /target/usr/bin/eatmydata ] ; then
+        for bin in dpkg apt-get aptitude tasksel ; do
+            file=/usr/bin/$bin
+            # Test that the file exist and have not been diverted already.
+            if [ -f /target$file ] ; then
+                info "diverting $file using eatmydata"
+                printf "#!/bin/sh\neatmydata $bin.distrib \"\$@\"\n" \
+                    > /target$file.edu
+                chmod 755 /target$file.edu
+                in-target dpkg-divert --package debian-edu-config \
+                    --rename --quiet --add $file
+                ln -sf ./$bin.edu /target$file
+            else
+                error "unable to divert $file, as it is missing."
+            fi
+        done
+    else
+        error "unable to find /usr/bin/eatmydata after installing the eatmydata pacage"
+    fi
+}
+
+override_install
+

+ +

To clean up, another shell script should go into +/usr/lib/finish-install.d/ with code like this: + +

+#! /bin/sh -e
+. /usr/share/debconf/confmodule
+error() {
+    logger -t my-finish-install "error: $@"
+}
+remove_install_override() {
+    for bin in dpkg apt-get aptitude tasksel ; do
+        file=/usr/bin/$bin
+        if [ -x /target$file.edu ] ; then
+            rm /target$file
+            in-target dpkg-divert --package debian-edu-config \
+                --rename --quiet --remove $file
+            rm /target$file.edu
+        else
+            error "Missing divert for $file."
+        fi
+    done
+    sync # Flush file buffers before continuing
+}
+
+remove_install_override
+

+ +

In Debian Edu, I placed both code fragments in a separate script +edu-eatmydata-install and call it from the pre-pkgsel.d and +finish-install.d scripts.

+ +

By now you might ask if this change should get into the normal +Debian installer too? I suspect it should, but am not sure the +current debian-installer coordinators find it useful enough. It also +depend on the side effects of the change. I'm not aware of any, but I +guess we will see if the change is safe after some more testing. +Perhaps there is some package in Debian depending on sync() and +fsync() having effect? Perhaps it should go into its own udeb, to +allow those of us wanting to enable it to do so without affecting +everyone.

+ +

Update 2014-09-24: Since a few days ago, enabling this optimization +will break installation of all programs using gnutls because of +bug #702711. An updated +eatmydata package in Debian will solve it.

@@ -183,94 +538,62 @@ irc.freenode.net IRC server.

- -
23rd April 2014
-

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 -my Isenkram -package. 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.

- -

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 -/usr/share/tasksel/descs/isenkram.desc and look like -this:

+ +
10th September 2014
+

Yesterday, I had the pleasure of attending a talk with the +Norwegian Unix User Group about +the +OpenPGP keyserver pool sks-keyservers.net, and was very happy to +learn that there is a large set of publicly available key servers to +use when looking for peoples public key. So far I have used +subkeys.pgp.net, and some times wwwkeys.nl.pgp.net when the former +were misbehaving, but those days are ended. The servers I have used +up until yesterday have been slow and some times unavailable. I hope +those problems are gone now.

+ +

Behind the round robin DNS entry of the +sks-keyservers.net service +there is a pool of more than 100 keyservers which are checked every +day to ensure they are well connected and up to date. It must be +better than what I have used so far. :)

+ +

Yesterdays speaker told me that the service is the default +keyserver provided by the default configuration in GnuPG, but this do +not seem to be used in Debian. Perhaps it should?

+ +

Anyway, I've updated my ~/.gnupg/options file to now include this +line:

-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
+keyserver pool.sks-keyservers.net
 

-

The second part is in -/usr/lib/tasksel/packages/for-current-hardware and look like -this:

+

With GnuPG version 2 one can also locate the keyserver using SRV +entries in DNS. Just for fun, I did just that at work, so now every +user of GnuPG at the University of Oslo should find a OpenGPG +keyserver automatically should their need it:

-#!/bin/sh
-#
-(
-    isenkram-lookup
-    isenkram-autoinstall-firmware -l
-) | sort -u
+% host -t srv _pgpkey-http._tcp.uio.no
+_pgpkey-http._tcp.uio.no has SRV record 0 100 11371 pool.sks-keyservers.net.
+%
 

-

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.

- -

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 -#719837 and -#730704). The cause is in -the python-apt code (bug -#745487), 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.

- -

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 -DEP-11, and -GSoC -project 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.

- -

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 -the pymissile -package or submit a bug report with the details to the isenkram -package. See also -all my -blog posts tagged isenkram 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.

+

Now if only +the +HKP lookup protocol supported finding signature paths, I would be +very happy. It can look up a given key or search for a user ID, but I +normally do not want that, but to find a trust path from my key to +another key. Given a user ID or key ID, I would like to find (and +download) the keys representing a signature path from my key to the +key in question, to be able to get a trust path between the two keys. +This is as far as I can tell not possible today. Perhaps something +for a future version of the protocol?

@@ -278,88 +601,116 @@ moment I got no better place to store it.

- -
15th April 2014
-

The Freedombox -project 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.

- -

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. :)

- -

Some key packages used by Freedombox are -freedombox-setup, -plinth, -pagekite, -tor, -privoxy, -owncloud and -dnsmasq. There -are plans to integrate more packages into the setup. User -documentation is maintained on the Debian wiki. Please -check out -the manual and help us improve it.

- -

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:

- -

-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
-

- -

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.

- -

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:

- -

-url=http://www.reinholdtsen.name/freedombox/preseed-jessie.dat
-

- -

I have not tested it myself the last few weeks, so I do not know if -it still work.

- -

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.

- -

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 -IRC (#freedombox on -irc.debian.org) and -the -mailing list if you want to help make this vision come true.

+ +
25th August 2014
+

Two years later, I am still not sure if it is legal here in Norway +to use or publish a video in H.264 or MPEG4 format edited by the +commercially licensed video editors, without limiting the use to +create "personal" or "non-commercial" videos or get a license +agreement with MPEG LA. If one +want to publish and broadcast video in a non-personal or commercial +setting, it might be that those tools can not be used, or that video +format can not be used, without breaking their copyright license. I +am not sure. +Back +then, I found that the copyright license terms for Adobe Premiere +and Apple Final Cut Pro both specified that one could not use the +program to produce anything else without a patent license from MPEG +LA. The issue is not limited to those two products, though. Other +much used products like those from Avid and Sorenson Media have terms +of use are similar to those from Adobe and Apple. The complicating +factor making me unsure if those terms have effect in Norway or not is +that the patents in question are not valid in Norway, but copyright +licenses are.

+ +

These are the terms for Avid Artist Suite, according to their +published +end user +license +text (converted to lower case text for easier reading):

+ +

+

18.2. MPEG-4. MPEG-4 technology may be included with the +software. MPEG LA, L.L.C. requires this notice:

+ +

This product is licensed under the MPEG-4 visual patent portfolio +license for the personal and non-commercial use of a consumer for (i) +encoding video in compliance with the MPEG-4 visual standard (“MPEG-4 +video”) and/or (ii) decoding MPEG-4 video that was encoded by a +consumer engaged in a personal and non-commercial activity and/or was +obtained from a video provider licensed by MPEG LA to provide MPEG-4 +video. No license is granted or shall be implied for any other +use. Additional information including that relating to promotional, +internal and commercial uses and licensing may be obtained from MPEG +LA, LLC. See http://www.mpegla.com. This product is licensed under +the MPEG-4 systems patent portfolio license for encoding in compliance +with the MPEG-4 systems standard, except that an additional license +and payment of royalties are necessary for encoding in connection with +(i) data stored or replicated in physical media which is paid for on a +title by title basis and/or (ii) data which is paid for on a title by +title basis and is transmitted to an end user for permanent storage +and/or use, such additional license may be obtained from MPEG LA, +LLC. See http://www.mpegla.com for additional details.

+ +

18.3. H.264/AVC. H.264/AVC technology may be included with the +software. MPEG LA, L.L.C. requires this notice:

+ +

This product is licensed under the AVC patent portfolio license for +the personal use of a consumer or other uses in which it does not +receive remuneration to (i) encode video in compliance with the AVC +standard (“AVC video”) and/or (ii) decode AVC video that was encoded +by a consumer engaged in a personal activity and/or was obtained from +a video provider licensed to provide AVC video. No license is granted +or shall be implied for any other use. Additional information may be +obtained from MPEG LA, L.L.C. See http://www.mpegla.com.

+

+ +

Note the requirement that the videos created can only be used for +personal or non-commercial purposes.

+ +

The Sorenson Media software have +similar terms:

+ +

+ +

With respect to a license from Sorenson pertaining to MPEG-4 Video +Decoders and/or Encoders: Any such product is licensed under the +MPEG-4 visual patent portfolio license for the personal and +non-commercial use of a consumer for (i) encoding video in compliance +with the MPEG-4 visual standard (“MPEG-4 video”) and/or (ii) decoding +MPEG-4 video that was encoded by a consumer engaged in a personal and +non-commercial activity and/or was obtained from a video provider +licensed by MPEG LA to provide MPEG-4 video. No license is granted or +shall be implied for any other use. Additional information including +that relating to promotional, internal and commercial uses and +licensing may be obtained from MPEG LA, LLC. See +http://www.mpegla.com.

+ +

With respect to a license from Sorenson pertaining to MPEG-4 +Consumer Recorded Data Encoder, MPEG-4 Systems Internet Data Encoder, +MPEG-4 Mobile Data Encoder, and/or MPEG-4 Unique Use Encoder: Any such +product is licensed under the MPEG-4 systems patent portfolio license +for encoding in compliance with the MPEG-4 systems standard, except +that an additional license and payment of royalties are necessary for +encoding in connection with (i) data stored or replicated in physical +media which is paid for on a title by title basis and/or (ii) data +which is paid for on a title by title basis and is transmitted to an +end user for permanent storage and/or use. Such additional license may +be obtained from MPEG LA, LLC. See http://www.mpegla.com for +additional details.

+ +

+ +

Some free software like +Handbrake and +FFMPEG uses GPL/LGPL licenses and do +not have any such terms included, so for those, there is no +requirement to limit the use to personal and non-commercial.

@@ -367,88 +718,167 @@ mailing list if you want to help make this vision come true.

- -
11th April 2014
-

For 12 år siden, skrev jeg et lite notat om -bruk av språkkoder -i Norge. 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.

- -

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):

- -

-
nb (nb_NO)
Bokmål i Norge
-
nn (nn_NO)
Nynorsk i Norge
-
se (se_NO)
Nordsamisk i Norge
-

- -

Alle programmer som bruker andre koder bør endres.

- -

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.

- -

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.

+ +
3rd August 2014
+

Lenge siden jeg har hatt tid til å publisere lenker til skriverier +jeg har hatt glede og nytte av av å lese. Her er en liten norsk +lenkesamling.

-

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.

- -

Følgende koder er eller har vært i bruk som locale-verdier for -"norske" språk. Disse bør unngås, og erstattes når de oppdages:

- -

- - - - - - - - -
norwegian-> nb_NO
bokmål -> nb_NO
bokmal -> nb_NO
nynorsk -> nn_NO
no -> nb_NO
no_NO -> nb_NO
no_NY -> nn_NO
sme_NO -> se_NO

- -

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 -Divvun-prosjektet en bedre -jobb.

- -

Referanser:

- -
- Tags: norsk. + Tags: lenker, norsk, opphavsrett, personvern.
@@ -456,287 +886,94 @@ jobb.

- -
9th April 2014
-

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 -S3QL, a locally -mounted network backed file system with the features I need.

- -

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.

- -

It is simple to use. I'm using it on Debian Wheezy, where the -package is included already. So to get started, run apt-get -install s3ql. Next, pick a storage provider. I ended up picking -Greenqloud, after reading their nice recipe on -how -to use S3QL with their Amazon S3 service, 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 -S3QL -Filesystem for HPC Storage 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.

- -

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 bucket-name below. In addition, one need -the API login and password, and a locally created password. Store it -all in ~root/.s3ql/authinfo2 like this: +

+
31st July 2014
+

The complete and free “out of the box” software solution for +schools, Debian Edu / +Skolelinux, is used quite a lot in Germany, and one of the people +involved is Bernd Zeitzen, who show up on the project mailing lists +from time to time with interesting questions and tips on how to adjust +the setup. I managed to interview him this summer.

-

-[s3c]
-storage-url: s3c://s.greenqloud.com:443/bucket-name
-backend-login: API-login
-backend-password: API-password
-fs-passphrase: local-password
-

+

Who are you, and how do you spend your days?

-

I create my local passphrase using pwget 50 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:

+

My name is Bernd Zeitzen and I'm married with Hedda, a self +employed physiotherapist. My former profession is tool maker, but I +haven't worked for 30 years in this job. 30 years ago I started to +support my wife and become her officeworker and a few years later the +administrator for a small computer network, today based on Ubuntu +Server (Samba, OpenVPN). For her daily work she has to use Windows +Desktops because the software she needs to organize her business only +works with Windows . :-(

+ +

In 1988 we started with one PC and DOS, then I learned to use +Windows 98, 2000, XP, …, 8, Ubuntu, MacOSX. Today we are running a +Linux server with 6 Windows clients and 10 persons (teacher of +children with special needs, speech therapist, occupational therapist, +psychologist and officeworkers) using our Samba shares via OpenVPN to +work with the documentations of our patients.

-

-# 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.
-# 

- -

The next step is mounting the file system to make the storage available. +

How did you get in contact with the Skolelinux / Debian Edu +project?

-

-# 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
-#
-

+

Two years ago a friend of mine asked me, if I want to get a job in +his school (Gymnasium +Harsewinkel). They started with Skolelinux / Debian Edu and they +were looking for people to give support to the teachers using the +software and the network and teaching the pupils increasing their +computer skills in optional lessons. I'm spending 4-6 hours a week +with this job.

-

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: +

What do you see as the advantages of Skolelinux / Debian +Edu?

-

-# umount.s3ql /s3ql
-# 
-

+

The independence.

-

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:

+

First: Every person is allowed to use, share and develop the +software. Even if you are poor, you are allowed to use the software +included in Skolelinux/Debian Edu and all the other Free Software.

-

-# 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.
-# 
-

+

Second: The software runs on old machines and this gives us the +possibility to recycle computers, weeded out from offices. The +servers and desktops are running for more than two years and they are +working reliable.

-

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 dd. 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.

- -

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:

+

We have two servers (one tjener and one terminal server), 45 +workstations in three classrooms and seven laptops as a mobile +solution for all classrooms. These machines are all booting from the +terminal server. In the moment we are installing 30 laptops as mobile +workstations. Then the pupils have the possibility to work with these +machines in their classrooms. Internet access is realized by a WLAN +router, connected to the schools network. This is all done without a +dedicated system administrator or a computer science teacher.

-

-# 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.
-#
-

+

What do you see as the disadvantages of Skolelinux / Debian +Edu?

-

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: +

Teachers and pupils are Windows users. <Irony on> And Linux +isn't cool. It's software for freaks using the command line. <Irony +off> They don't realize the stability of the system.

-

-# s3qlctrl upload-meta /s3ql
-# s3qlctrl flushcache /s3ql
-# 
-

+

Which free software do you use daily?

-

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:

+

Firefox, Thunderbird, LibreOffice, Ubuntu Server 12.04 (Samba, +Apache, MySQL, Joomla!, … and Skolelinux / Debian Edu)

-

-# 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)
-#
-

+

Which strategy do you believe is the right one to use to +get schools to use free software?

-

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 -Greenqloud, -Google Drive, -Amazon S3 web serivces, -Rackspace and -Crowncloud. 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.

- -

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 -"An -Innovative Parallel Cloud Storage System using OpenStack’s SwiftObject -Store and Transformative Parallel I/O Approach" by Hsing-Bung -Chen, Benjamin McClelland, David Sherrill, Alfred Torrez, Parks Fields -and Pamela Smith. Please have a look.

- -

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 -my -test code to check file system semantics, 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.

- -

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 -Tarsnap service, 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.

- -

As usual, if you use Bitcoin and want to show your support of my -activities, please send Bitcoin donations to my address -15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b.

+

In Germany we have the situation: every school is free to decide +which software they want to use. This decision is influenced by +teachers who learned to use Windows and MS Office. They buy a PC with +Windows preinstalled and an additional testing version of MS +Office. They don't know about the possibility to use Free Software +instead. Another problem are the publisher of school books. They +develop their software, added to the school books, for Windows.

@@ -744,86 +981,39 @@ activities, please send Bitcoin donations to my address
- -
8th April 2014
-

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 -en -flott dokumentar tilgjengelig hos NRK som jeg tidligere -har -anbefalt alle å se.

- -

Her er et liten knippe nyhetsoppslag om saken, og jeg regner med at -det kommer flere ut over dagen. Flere kan finnes -via -mylder.

- -

-

- -

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 -Freedombox og -Dugnadsnett er viktigere enn -noen gang.

- -

Update 2014-04-08 12:10: Kronerullingen for å -stoppe datalagringsdirektivet i Norge gjøres hos foreningen -Digitalt Personvern, -som har samlet inn 843 215,- så langt men trenger nok mye mer hvis - -ikke Høyre og Arbeiderpartiet bytter mening i saken. Det var -kun -partinene Høyre og Arbeiderpartiet som stemte for -Datalagringsdirektivet, og en av dem må bytte mening for at det skal -bli flertall mot i Stortinget. Se mer om saken -Holder -de ord.

+ +
23rd July 2014
+

This summer I finally had time to continue working on the Norwegian +docbook version of the 2004 book +Free Culture by Lawrence Lessig, +to get a Norwegian text explaining the problems with todays copyright +law. Yesterday, I finally completed translated the book text. There +are still some foot/end notes left to translate, the colophon page +need to be rewritten, and a few words and phrases still need to be +translated, but the Norwegian text is ready for the first proof +reading. :) More spell checking is needed, and several illustrations +need to be cleaned up. The work stopped up because I had to give +priority to other projects the last year, and the progress graph of +the translation show this very well:

+ +

+ +

If you want to read the result, check out the +github +project pages and the +PDF, +EPUB +and HTML version available in the +archive +directory.

+ +

Please report typos, bugs and improvements to the github project if +you find any.

@@ -831,62 +1021,111 @@ de ord.

- -
1st April 2014
-

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.

- -

ReactOS 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 the Wine -project, which make it possible to run Windows binaries on -Linux.

- -

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 -screen shots on the -project web site for an idea what it look like (it looks just like -Windows before metro).

- -

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 -downloading the -installation CD, the live CD or the preinstalled virtual machine -image.

+ +
17th June 2014
+

The Debian Edu / Skolelinux +project provide an instruction manual for teachers, system +administrators and other users that contain useful tips for setting up +and maintaining a Debian Edu installation. This text is about how the +text processing of this manual is handled in the project.

+ +

One goal of the project is to provide information in the native +language of its users, and for this we need to handle translations. +But we also want to make sure each language contain the same +information, so for this we need a good way to keep the translations +in sync. And we want it to be easy for our users to improve the +documentation, avoiding the need to learn special formats or tools to +contribute, and the obvious way to do this is to make it possible to +edit the documentation using a web browser. We also want it to be +easy for translators to keep the translation up to date, and give them +help in figuring out what need to be translated. Here is the list of +tools and the process we have found trying to reach all these +goals.

+ +

We maintain the authoritative source of our manual in the +Debian +wiki, as several wiki pages written in English. It consist of one +front page with references to the different chapters, several pages +for each chapter, and finally one "collection page" gluing all the +chapters together into one large web page (aka +the +AllInOne page). The AllInOne page is the one used for further +processing and translations. Thanks to the fact that the +MoinMoin installation on +wiki.debian.org support exporting pages in +the Docbook format, we can fetch +the list of pages to export using the raw version of the AllInOne +page, loop over each of them to generate a Docbook XML version of the +manual. This process also download images and transform image +references to use the locally downloaded images. The generated +Docbook XML files are slightly broken, so some post-processing is done +using the documentation/scripts/get_manual program, and the +result is a nice Docbook XML file (debian-edu-wheezy-manual.xml) and +a handfull of images. The XML file can now be used to generate PDF, HTML +and epub versions of the English manual. This is the basic step of +our process, making PDF (using dblatex), HTML (using xsltproc) and +epub (using dbtoepub) version from Docbook XML, and the resulting files +are placed in the debian-edu-doc-en binary package.

+ +

But English documentation is not enough for us. We want translated +documentation too, and we want to make it easy for translators to +track the English original. For this we use the +poxml package, +which allow us to transform the English Docbook XML file into a +translation file (a .pot file), usable with the normal gettext based +translation tools used by those translating free software. The pot +file is used to create and maintain translation files (several .po +files), which the translations update with the native language +translations of all titles, paragraphs and blocks of text in the +original. The next step is combining the original English Docbook XML +and the translation file (say debian-edu-wheezy-manual.nb.po), to +create a translated Docbook XML file (in this case +debian-edu-wheezy-manual.nb.xml). This translated (or partly +translated, if the translation is not complete) Docbook XML file can +then be used like the original to create a PDF, HTML and epub version +of the documentation.

+ +

The translators use different tools to edit the .po files. We +recommend using +lokalize, +while some use emacs and vi, others can use web based editors like +Poodle or +Transifex. All we care about +is where the .po file end up, in our git repository. Updated +translations can either be committed directly to git, or submitted as +bug reports +against the debian-edu-doc package.

+ +

One challenge is images, which both might need to be translated (if +they show translated user applications), and are needed in different +formats when creating PDF and HTML versions (epub is a HTML version in +this regard). For this we transform the original PNG images to the +needed density and format during build, and have a way to provide +translated images by storing translated versions in +images/$LANGUAGECODE/. I am a bit unsure about the details here. The +package maintainers know more.

+ +

If you wonder what the result look like, we provide +the content +of the documentation packages on the web. See for example the +Italian +PDF version or the +German +HTML version. We do not yet build the epub version by default, +but perhaps it will be done in the future.

+ +

To learn more, check out +the +debian-edu-doc package, +the +manual on the wiki and +the +translation instructions in the manual.

@@ -894,92 +1133,57 @@ image.

- -
30th March 2014
-

Debian Edu / Skolelinux -keep gaining new users. Some weeks ago, a person showed up on IRC, -#debian-edu, with a -wish to contribute, and I managed to get a interview with this great -contributor Roger Marsal to learn more about his background.

- -

Who are you, and how do you spend your days?

- -

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.

- -

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.

- -

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.

- -

How did you get in contact with the Skolelinux / Debian Edu -project?

- -

I discovered the LTSP 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.

- -

What do you see as the advantages of Skolelinux / Debian -Edu?

- -

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.

- -

What do you see as the disadvantages of Skolelinux / Debian -Edu?

- -

I found two main disadvantages.

- -

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.

- -

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.

- -

Which free software do you use daily?

- -

I use Debian, Firefox, Okular, Inkscape, LibreOffice and -Virtualbox.

+ +
16th June 2014
+

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 +min +oppskrift fra 2011 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 +youtube-dl. Støtten i +youtube-dl kom +inn for 23 dager siden og +versjonen i +Debian 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 +problemet til +utviklerne, og antar de får fikset det snart.

+

Dermed er alt klart til å laste ned dokumentarene om +USAs +hemmelige avlytting og +Selskapene +bak USAs avlytting, i tillegg til +intervjuet +med Edward Snowden gjort av den tyske tv-kanalen ARD. Anbefaler +alle å se disse, sammen med +foredraget +til Jacob Appelbaum på siste CCC-konferanse, for å forstå mer om +hvordan overvåkningen av borgerne brer om seg.

-

Which strategy do you believe is the right one to use to -get schools to use free software?

+

Takk til gode venner på foreningen NUUGs IRC-kanal +#nuug på irc.freenode.net +for tipsene som fikk meg i mål.

-

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 "R" statistical language; 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.

+

Oppdatering 2014-06-17: Etter at jeg publiserte +denne, ble jeg tipset om bloggposten +"Downloading +HD content from tv.nrk.no" av Ingvar Hagelund, som har alternativ +implementasjon og tips for å lage mkv-fil med undertekstene inkludert. +Kanskje den passer bedre for deg? I tillegg ble feilen i youtube-dl +ble fikset litt senere ut på dagen i går, samt at youtube-dl fikk +støtte for å laste ned undertitler. Takk til Anders Einar Hilden for +god innsats og youtube-dl-utviklerne for rask respons.

@@ -1007,7 +1211,13 @@ first scenarios where this will happen.

  • May (1)
  • -
  • June (1)
  • +
  • June (2)
  • + +
  • July (2)
  • + +
  • August (2)
  • + +
  • September (4)
  • @@ -1188,47 +1398,47 @@ first scenarios where this will happen.

  • chrpath (2)
  • -
  • debian (98)
  • +
  • debian (102)
  • -
  • debian edu (146)
  • +
  • debian edu (149)
  • digistan (10)
  • dld (15)
  • -
  • docbook (10)
  • +
  • docbook (12)
  • drivstoffpriser (4)
  • -
  • english (247)
  • +
  • english (254)
  • fiksgatami (21)
  • fildeling (12)
  • -
  • freeculture (12)
  • +
  • freeculture (13)
  • freedombox (8)
  • frikanalen (11)
  • -
  • intervju (40)
  • +
  • intervju (41)
  • isenkram (9)
  • -
  • kart (18)
  • +
  • kart (19)
  • ldap (9)
  • -
  • lenker (7)
  • +
  • lenker (8)
  • ltsp (1)
  • mesh network (8)
  • -
  • multimedia (28)
  • +
  • multimedia (30)
  • -
  • norsk (246)
  • +
  • norsk (248)
  • nuug (162)
  • @@ -1236,9 +1446,9 @@ first scenarios where this will happen.

  • open311 (2)
  • -
  • opphavsrett (46)
  • +
  • opphavsrett (48)
  • -
  • personvern (72)
  • +
  • personvern (75)
  • raid (1)
  • @@ -1246,7 +1456,7 @@ first scenarios where this will happen.

  • reprap (11)
  • -
  • rfid (2)
  • +
  • rfid (3)
  • robot (9)
  • @@ -1256,29 +1466,29 @@ first scenarios where this will happen.

  • scraperwiki (2)
  • -
  • sikkerhet (40)
  • +
  • sikkerhet (41)
  • sitesummary (4)
  • skepsis (4)
  • -
  • standard (44)
  • +
  • standard (45)
  • stavekontroll (3)
  • stortinget (9)
  • -
  • surveillance (25)
  • +
  • surveillance (26)
  • sysadmin (1)
  • valg (8)
  • -
  • video (42)
  • +
  • video (43)
  • vitenskap (4)
  • -
  • web (32)
  • +
  • web (33)