X-Git-Url: http://pere.pagekite.me/gitweb/homepage.git/blobdiff_plain/e57109f196de8b39dbb0a8b27fd68db2bf50c35e..59c16ba96441776d59c287cc827c044fb36d4ee8:/blog/index.rss diff --git a/blog/index.rss b/blog/index.rss index ebbb9bec91..3983f80396 100644 --- a/blog/index.rss +++ b/blog/index.rss @@ -7,415 +7,375 @@ - systemd, an interesting alternative to upstart - http://people.skolelinux.org/pere/blog/systemd__an_interesting_alternative_to_upstart.html - http://people.skolelinux.org/pere/blog/systemd__an_interesting_alternative_to_upstart.html - Thu, 13 May 2010 22:20:00 +0200 + TED talks på norsk og NUUG-foredrag - frivillige trengs til teksting + http://people.skolelinux.org/pere/blog/TED_talks_p___norsk_og_NUUG_foredrag___frivillige_trengs_til_teksting.html + http://people.skolelinux.org/pere/blog/TED_talks_p___norsk_og_NUUG_foredrag___frivillige_trengs_til_teksting.html + Fri, 1 Oct 2010 11:00:00 +0200 -<p>The last few days a new boot system called -<a href="http://www.freedesktop.org/wiki/Software/systemd">systemd</a> -has been -<a href="http://0pointer.de/blog/projects/systemd.html">introduced</a> - -to the free software world. I have not yet had time to play around -with it, but it seem to be a very interesting alternative to -<a href="http://upstart.ubuntu.com/">upstart</a>, and might prove to be -a good alternative for Debian when we are able to switch to an event -based boot system. Tollef is -<a href="http://bugs.debian.org/580814">in the process</a> of getting -systemd into Debian, and I look forward to seeing how well it work. I -like the fact that systemd handles init.d scripts with dependency -information natively, allowing them to run in parallel where upstart -at the moment do not.</p> - -<p>Unfortunately do systemd have the same problem as upstart regarding -platform support. It only work on recent Linux kernels, and also need -some new kernel features enabled to function properly. This means -kFreeBSD and Hurd ports of Debian will need a port or a different boot -system. Not sure how that will be handled if systemd proves to be the -way forward.</p> - -<p>In the mean time, based on the -<a href="http://lists.debian.org/debian-devel/2010/05/msg00122.html">input -on debian-devel@</a> regarding parallel booting in Debian, I have -decided to enable full parallel booting as the default in Debian as -soon as possible (probably this weekend or early next week), to see if -there are any remaining serious bugs in the init.d dependencies. A -new version of the sysvinit package implementing this change is -already in experimental. If all go well, Squeeze will be released -with parallel booting enabled by default.</p> +<p>Frikanalen og NUUG jobber for å få <a href="http://www.ted.com">TED +talks</a> kringkastet på +<a href="http://www.frikanalen.no/">Frikanalen</a>, for å gi et mer +variert innhold på kanalen som i dag sendes på RiksTV, Lyse og +Uninett. Før innslagene kan sendes må det lages norske undertekster, +og dette her trengs det frivillige. Det er hundrevis av innslag, men +mine favoritter er +<a href="http://www.ted.com/talks/james_randi.html">James Randi</a> og +<a href="http://www.ted.com/talks/lang/eng/michael_specter_the_danger_of_science_denial.html">Michael +Specter</a>. Hvis du har litt tid til overs, bli med på å oversette +TED-foredragene til norsk og få på plass undertekster. TED har +allerede opplegg på plass for å håndtere oversettelser og +undertekster. Registrer deg på +<a href="http://www.ted.com/translate/forted">sidene til TED</a> i +dag!</p> + +<p>NUUG holder også på å få alle opptakene fra NUUG-presentasjonene +<a href="http://www.nuug.no/pub/video/frikanalen/frontpage.cgi?organization=NUUG">publisert +på Frikanalen</a>. Foredrag på engelsk må også her tekstes og +oversettes. Ta kontakt med video@nuug.no hvis du vil bidra med +teksting og oversetting. Arbeidet koordineres på epostlisten og på +IRC (#nuug-video på irc.oftc.org), og <a +href="http://wiki.nuug.no/grupper/video/frikanalen">en wikiside</a> +brukes som notatblokk for arbeidet. Mest lovende verktøy for dette +ser i dag ut til å være +<a href="http://universalsubtitles.org/">Universal Subtitles</a>, som +lar en bidra med teksting via en nettleser.</p> - Parallellizing the boot in Debian Squeeze - ready for wider testing - http://people.skolelinux.org/pere/blog/Parallellizing_the_boot_in_Debian_Squeeze___ready_for_wider_testing.html - http://people.skolelinux.org/pere/blog/Parallellizing_the_boot_in_Debian_Squeeze___ready_for_wider_testing.html - Thu, 6 May 2010 23:25:00 +0200 + Bilkollektivet vil ha retten til å se hvor jeg kjører... + http://people.skolelinux.org/pere/blog/Bilkollektivet_vil_ha_retten_til____se_hvor_jeg_kj__rer___.html + http://people.skolelinux.org/pere/blog/Bilkollektivet_vil_ha_retten_til____se_hvor_jeg_kj__rer___.html + Thu, 23 Sep 2010 11:55:00 +0200 -<p>These days, the init.d script dependencies in Squeeze are quite -complete, so complete that it is actually possible to run all the -init.d scripts in parallell based on these dependencies. If you want -to test your Squeeze system, make sure -<a href="http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot">dependency -based boot sequencing</a> is enabled, and add this line to -/etc/default/rcS:</p> - -<blockquote><pre> -CONCURRENCY=makefile -</pre></blockquote> - -<p>That is it. It will cause sysv-rc to use the startpar tool to run -scripts in parallel using the dependency information stored in -/etc/init.d/.depend.boot, /etc/init.d/.depend.start and -/etc/init.d/.depend.stop to order the scripts. Startpar is configured -to try to start the kdm and gdm scripts as early as possible, and will -start the facilities required by kdm or gdm as early as possible to -make this happen.</p> - -<p>Give it a try, and see if you like the result. If some services -fail to start properly, it is most likely because they have incomplete -init.d script dependencies in their startup script (or some of their -dependent scripts have incomplete dependencies). Report bugs and get -the package maintainers to fix it. :)</p> - -<p>Running scripts in parallel could be the default in Debian when we -manage to get the init.d script dependencies complete and correct. I -expect we will get there in Squeeze+1, if we get manage to test and -fix the remaining issues.</p> - -<p>If you report any problems with dependencies in init.d scripts to -the BTS, please usertag the report to get it to show up at -<a href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org">the -list of usertagged bugs related to this</a>.</p> +<p>Jeg er med i +<a href="http://www.bilkollektivet.no/">Bilkollektivet</a> her i Oslo, +og har inntil i dag vært fornøyd med opplegget. I dag kom det brev +fra bilkollektivet, der de forteller om nytt webopplegg og nye +rutiner, og at de har tenkt å angripe min rett til å ferdes anonymt +som bruker av Bilkollektivet. Det gjorde meg virkelig trist å +lese.</p> + +<p>Brevet datert 2010-09-16 forteller at Bilkollektivet har tenkt å gå +over til biler med "bilcomputer" og innebygget sporings-GPS som lar +administrasjonen i bilkollektivet se hvor bilene er til en hver tid, +noe som betyr at de også kan se hvor jeg kjører når jeg bruker +Bilkollektivet. +<a href="http://people.skolelinux.org/pere/blog/Anonym_ferdsel_er_en_menneskerett.html">Retten +til å ferdes anonymt</a> er som tidligere nevnt viktig for meg, og jeg +finner det uakseptabelt å måtte godta å bli radiomerket for å kunne +bruke bil. Har ikke satt meg inn i hva som er historien for denne +endringen, så jeg vet ikke om det er godkjent av +f.eks. andelseiermøtet. Ser at +<a href="http://www.bilkollektivet.no/bilbruksregler.26256.no.html">nye +bilbruksregler</a> med følgende klausul ble vedtatt av styret +2010-08-26:</p> + +<blockquote><p>Andelseier er med dette gjort kjent med at bilene er +utstyrt med sporingsutstyr, som kan benyttes av Bilkollektivet til å +spore biler som brukes utenfor gyldig reservasjon.</p></blockquote> + +<p>For meg er det prinsipielt uakseptabelt av Bilkollektivet å skaffe +seg muligheten til å se hvor jeg befinner meg, og det er underordnet +når informasjonen blir brukt og hvem som får tilgang til den. Får se +om jeg har energi til å forsøke å endre planene til Bilkollektivet +eller bare ser meg om etter alternativer.</p> - Forcing new users to change their password on first login - http://people.skolelinux.org/pere/blog/Forcing_new_users_to_change_their_password_on_first_login.html - http://people.skolelinux.org/pere/blog/Forcing_new_users_to_change_their_password_on_first_login.html - Sun, 2 May 2010 13:47:00 +0200 + Oppdatert kart over overvåkningskamera i Norge + http://people.skolelinux.org/pere/blog/Oppdatert_kart_over_overv__kningskamera_i_Norge.html + http://people.skolelinux.org/pere/blog/Oppdatert_kart_over_overv__kningskamera_i_Norge.html + Wed, 22 Sep 2010 20:50:00 +0200 -<p>One interesting feature in Active Directory, is the ability to -create a new user with an expired password, and thus force the user to -change the password on the first login attempt.</p> - -<p>I'm not quite sure how to do that with the LDAP setup in Debian -Edu, but did some initial testing with a local account. The account -and password aging information is available in /etc/shadow, but -unfortunately, it is not possible to specify an expiration time for -passwords, only a maximum age for passwords.</p> - -<p>A freshly created account (using adduser test) will have these -settings in /etc/shadow:</p> - -<blockquote><pre> -root@tjener:~# chage -l test -Last password change : May 02, 2010 -Password expires : never -Password inactive : never -Account expires : never -Minimum number of days between password change : 0 -Maximum number of days between password change : 99999 -Number of days of warning before password expires : 7 -root@tjener:~# -</pre></blockquote> - -<p>The only way I could come up with to create a user with an expired -account, is to change the date of the last password change to the -lowest value possible (January 1th 1970), and the maximum password age -to the difference in days between that date and today. To make it -simple, I went for 30 years (30 * 365 = 10950) and January 2th (to -avoid testing if 0 is a valid value).</p> - -<p>After using these commands to set it up, it seem to work as -intended:</p> - -<blockquote><pre> -root@tjener:~# chage -d 1 test; chage -M 10950 test -root@tjener:~# chage -l test -Last password change : Jan 02, 1970 -Password expires : never -Password inactive : never -Account expires : never -Minimum number of days between password change : 0 -Maximum number of days between password change : 10950 -Number of days of warning before password expires : 7 -root@tjener:~# -</pre></blockquote> - -<p>So far I have tested this with ssh and console, and kdm (in -Squeeze) login, and all ask for a new password before login in the -user (with ssh, I was thrown out and had to log in again).</p> - -<p>Perhaps we should set up something similar for Debian Edu, to make -sure only the user itself have the account password?</p> - -<p>If you want to comment on or help out with implementing this for -Debian Edu, please contact us on debian-edu@lists.debian.org.</p> - -<p>Update 2010-05-02 17:20: Paul Tötterman tells me on IRC that the -shadow(8) page in Debian/testing now state that setting the date of -last password change to zero (0) will force the password to be changed -on the first login. This was not mentioned in the manual in Lenny, so -I did not notice this in my initial testing. I have tested it on -Squeeze, and '<tt>chage -d 0 username</tt>' do work there. I have not -tested it on Lenny yet.</p> - -<p>Update 2010-05-02-19:05: Jim Paris tells me via email that an -equivalent command to expire a password is '<tt>passwd -e -username</tt>', which insert zero into the date of the last password -change.</p> +<p>For ca. et og et halvt år siden +<a href="http://people.skolelinux.org/pere/blog/Kart_over_overv__kningskamera_i_Norge.html">startet +jeg på et kart over overvåkningskamera i Norge</a>, i regi av +<a href="http://www.personvern.no/">personvernforeningen</a>. Det har +blitt oppdatert regelmessing, og jeg oppdaterte det nettopp. Fra den +spede start med 22 kamera registrert er det nå registrert 54 kamera. +Det er bare en brøkdel av de kamera som finnes i Norge, men det går +sakte men sikkert i riktig retning.</p> + +<p>Informasjonen registreres fortsatt direkte inn i +<a href="http://www.openstreetmap.org/">OpenStreetmap</a>, og hentes +automatisk over i +<a href="http://people.skolelinux.no/pere/surveillance-norway/">spesialkartet</a> +når jeg kjører et script for å filtrere ut overvåkningskamera fra +OSM-dumpen for Norge.</p> - Thoughts on roaming laptop setup for Debian Edu - http://people.skolelinux.org/pere/blog/Thoughts_on_roaming_laptop_setup_for_Debian_Edu.html - http://people.skolelinux.org/pere/blog/Thoughts_on_roaming_laptop_setup_for_Debian_Edu.html - Wed, 28 Apr 2010 20:40:00 +0200 + Anonym ferdsel er en menneskerett + http://people.skolelinux.org/pere/blog/Anonym_ferdsel_er_en_menneskerett.html + http://people.skolelinux.org/pere/blog/Anonym_ferdsel_er_en_menneskerett.html + Wed, 15 Sep 2010 12:15:00 +0200 -<p>For some years now, I have wondered how we should handle laptops in -Debian Edu. The Debian Edu infrastructure is mostly designed to -handle stationary computers, and less suited for computers that come -and go.</p> - -<p>Now I finally believe I have an sensible idea on how to adjust -Debian Edu for laptops, by introducing a new profile for them, for -example called Roaming Workstations. Here are my thought on this. -The setup would consist of the following:</p> - -<ul> - - <li>During installation, the user name of the owner / primary user of - the laptop is requested and a local home directory is set up for - the user, with uid and gid information fetched from the LDAP - server. This allow the user to work also when offline. The - central home directory can be available in a subdirectory on - request, for example mounted via CIFS. It could be mounted - automatically when a user log in while on the Debian Edu network, - and unmounted when the machine is taken away (network down, - hibernate, etc), it can be set up to do automatic mounting on - request (using autofs), or perhaps some GUI button on the desktop - can be used to access it when needed. Perhaps it is enough to use - the fish protocol in KDE?</li> - - <li>Password checking is set up to use LDAP or Kerberos - authentication when the machine is on the Debian Edu network, and - to cache the password for offline checking when the machine unable - to reach the LDAP or Kerberos server. This can be done using - <a href="http://www.padl.com/OSS/pam_ccreds.html">libpam-ccreds</a> - or the Fedora developed - <a href="https://fedoraproject.org/wiki/Features/SSSD">System - Security Services Daemon</a> packages.</li> - - <li>File synchronisation with the central home directory is set up - using a shared directory in both the local and the central home - directory, using unison.</li> - - <li>Printing should be set up to print to all printers broadcasting - their existence on the local network, and should then work out of - the box with CUPS. For sites needing accurate printer quotas, some - system with Kerberos authentication or printing via ssh could be - implemented.</li> - - <li>For users that should have local root access to their laptop, - sudo should be used to allow this to the local user.</li> - - <li>It would be nice if user and group information from LDAP is - cached on the client, but given that there are entries for the - local user and primary group in /etc/, it should not be needed.</li> - -</ul> - -<p>I believe all the pieces to implement this are in Debian/testing at -the moment. If we work quickly, we should be able to get this ready -in time for the Squeeze release to freeze. Some of the pieces need -tweaking, like libpam-ccreds should get support for pam-auth-update -(<a href="http://bugs.debian.org/566718">#566718</a>) and nslcd (or -perhaps debian-edu-config) should get some integration code to stop -its daemon when the LDAP server is unavailable to avoid long timeouts -when disconnected from the net. If we get Kerberos enabled, we need -to make sure we avoid long timeouts there too.</p> - -<p>If you want to help out with implementing this for Debian Edu, -please contact us on debian-edu@lists.debian.org.</p> +<p>Debatten rundt sporveiselskapet i Oslos (Ruter AS) ønske om +<a href="http://www.aftenposten.no/nyheter/iriks/article3808135.ece">å +radiomerke med RFID</a> alle sine kunder og +<a href="http://www.aftenposten.no/nyheter/article3809746.ece">registerere +hvor hver og en av oss beveger oss</a> pågår, og en ting som har +kommet lite frem i debatten er at det faktisk er en menneskerett å +kunne ferdes anonymt internt i ens eget land.</p> + +<p>Fant en grei kilde for dette i et +<a href="http://www.datatilsynet.no/upload/Microsoft%20Word%20-%2009-01399-2%20H+%C2%A9ringsnotat%20-%20Samferdselsdepartementet%20-%20Utkas%C3%94%C3%87%C2%AA.pdf">skriv +fra Datatilsynet</a> til Samferdselsdepartementet om tema:</p> + +<blockquote><p>Retten til å ferdes anonymt kan utledes av +menneskerettskonvensjonen artikkel 8 og av EUs personverndirektiv. +Her heter det at enkeltpersoners grunnleggende rettigheter og frihet +må respekteres, særlig retten til privatlivets fred. I både +personverndirektivet og i den norske personopplysningsloven er +selvråderetten til hver enkelt et av grunnprinsippene, hovedsaklig +uttrykt ved at en må gi et frivillig, informert og uttrykkelig +samtykke til behandling av personopplysninger.</p></blockquote> + +<p>For meg er det viktig at jeg kan ferdes anonymt, og det er litt av +bakgrunnen til at jeg handler med kontanter, ikke har mobiltelefon og +forventer å kunne reise med bil og kollektivtrafikk uten at det blir +registrert hvor jeg har vært. Ruter angriper min rett til å ferdes +uten radiopeiler med sin innføring av RFID-kort, og dokumenterer sitt +ønske om å registrere hvor kundene befant seg ved å ønske å gebyrlegge +oss som ikke registrerer oss hver gang vi beveger oss med +kollektivtrafikken i Oslo. Jeg synes det er hårreisende.</p> - Great book: "Content: Selected Essays on Technology, Creativity, Copyright, and the Future of the Future" - http://people.skolelinux.org/pere/blog/Great_book___Content__Selected_Essays_on_Technology__Creativity__Copyright__and_the_Future_of_the_Future_.html - http://people.skolelinux.org/pere/blog/Great_book___Content__Selected_Essays_on_Technology__Creativity__Copyright__and_the_Future_of_the_Future_.html - Mon, 19 Apr 2010 17:10:00 +0200 + Terms of use for video produced by a Canon IXUS 130 digital camera + http://people.skolelinux.org/pere/blog/Terms_of_use_for_video_produced_by_a_Canon_IXUS_130_digital_camera.html + http://people.skolelinux.org/pere/blog/Terms_of_use_for_video_produced_by_a_Canon_IXUS_130_digital_camera.html + Thu, 9 Sep 2010 23:55:00 +0200 -<p>The last few weeks i have had the pleasure of reading a -thought-provoking collection of essays by Cory Doctorow, on topics -touching copyright, virtual worlds, the future of man when the -conscience mind can be duplicated into a computer and many more. The -book titled "Content: Selected Essays on Technology, Creativity, -Copyright, and the Future of the Future" is available with few -restrictions on the web, for example from -<a href="http://craphound.com/content/">his own site</a>. I read the -epub-version from -<a href="http://www.feedbooks.com/book/2883">feedbooks</a> using -<a href="http://www.fbreader.org/">fbreader</a> and my N810. I -strongly recommend this book.</p> +<p>A few days ago I had the mixed pleasure of bying a new digital +camera, a Canon IXUS 130. It was instructive and very disturbing to +be able to verify that also this camera producer have the nerve to +specify how I can or can not use the videos produced with the camera. +Even thought I was aware of the issue, the options with new cameras +are limited and I ended up bying the camera anyway. What is the +problem, you might ask? It is software patents, MPEG-4, H.264 and the +MPEG-LA that is the problem, and our right to record our experiences +without asking for permissions that is at risk. + +<p>On page 27 of the Danish instruction manual, this section is +written:</p> + +<blockquote> +<p>This product is licensed under AT&T patents for the MPEG-4 standard +and may be used for encoding MPEG-4 compliant video and/or decoding +MPEG-4 compliant video that was encoded only (1) for a personal and +non-commercial purpose or (2) by a video provider licensed under the +AT&T patents to provide MPEG-4 compliant video.</p> + +<p>No license is granted or implied for any other use for MPEG-4 +standard.</p> +</blockquote> + +<p>In short, the camera producer have chosen to use technology +(MPEG-4/H.264) that is only provided if I used it for personal and +non-commercial purposes, or ask for permission from the organisations +holding the knowledge monopoly (patent) for technology used.</p> + +<p>This issue has been brewing for a while, and I recommend you to +read +"<a href="http://www.osnews.com/story/23236/Why_Our_Civilization_s_Video_Art_and_Culture_is_Threatened_by_the_MPEG-LA">Why +Our Civilization's Video Art and Culture is Threatened by the +MPEG-LA</a>" by Eugenia Loli-Queru and +"<a href="http://webmink.com/2010/09/03/h-264-and-foss/">H.264 Is Not +The Sort Of Free That Matters</a>" by Simon Phipps to learn more about +the issue. The solution is to support the +<a href="http://www.digistan.org/open-standard:definition">free and +open standards</a> for video, like <a href="http://www.theora.org/">Ogg +Theora</a>, and avoid MPEG-4 and H.264 if you can.</p> - Kerberos for Debian Edu/Squeeze? - http://people.skolelinux.org/pere/blog/Kerberos_for_Debian_Edu_Squeeze_.html - http://people.skolelinux.org/pere/blog/Kerberos_for_Debian_Edu_Squeeze_.html - Wed, 14 Apr 2010 17:20:00 +0200 + Navteq bruker 3-12 måneder, OpenStreetmap.org trenger noen dager + http://people.skolelinux.org/pere/blog/Navteq_bruker_3_12_m__neder__OpenStreetmap_org_trenger_noen_dager.html + http://people.skolelinux.org/pere/blog/Navteq_bruker_3_12_m__neder__OpenStreetmap_org_trenger_noen_dager.html + Tue, 7 Sep 2010 21:40:00 +0200 -<p><a href="http://www.nuug.no/aktiviteter/20100413-kerberos/">Yesterdays -NUUG presentation</a> about Kerberos was inspiring, and reminded me -about the need to start using Kerberos in Skolelinux. Setting up a -Kerberos server seem to be straight forward, and if we get this in -place a long time before the Squeeze version of Debian freezes, we -have a chance to migrate Skolelinux away from NFSv3 for the home -directories, and over to an architecture where the infrastructure do -not have to trust IP addresses and machines, and instead can trust -users and cryptographic keys instead.</p> - -<p>A challenge will be integration and administration. Is there a -Kerberos implementation for Debian where one can control the -administration access in Kerberos using LDAP groups? With it, the -school administration will have to maintain access control using flat -files on the main server, which give a huge potential for errors.</p> - -<p>A related question I would like to know is how well Kerberos and -pam-ccreds (offline password check) work together. Anyone know?</p> - -<p>Next step will be to use Kerberos for access control in Lwat and -Nagios. I have no idea how much work that will be to implement. We -would also need to document how to integrate with Windows AD, as such -shared network will require two Kerberos realms that need to cooperate -to work properly.</p> - -<p>I believe a good start would be to start using Kerberos on the -skolelinux.no machines, and this way get ourselves experience with -configuration and integration. A natural starting point would be -setting up ldap.skolelinux.no as the Kerberos server, and migrate the -rest of the machines from PAM via LDAP to PAM via Kerberos one at the -time.</p> - -<p>If you would like to contribute to get this working in Skolelinux, -I recommend you to see the video recording from yesterdays NUUG -presentation, and start using Kerberos at home. The video show show -up in a few days.</p> +<p>Jeg ble riktig fascinert av +<a href="http://www.aftenposten.no/nyheter/iriks/article3800967.ece">en +artikkel i Aftenposten</a> om hvor hardt Navteq jobber for å oppdatere +kartene som brukes i navigasjons-GPSer, der det blant annet heter at +"på grunn av teknikken tar det alt fra tre til tolv måneder før +kartene er oppdatert". Når en kjenner hva slags oppdateringshastighet +som er tilgjengelig på +<a href="http://www.openstreetmap.org/">OpenStreetmap</a> som +oppdateres på dugnad, blir det litt trist å se hva noe av det beste en +kan kjøpe for penger får til.</p> + +<p>Fra en endrer kartdataene i databasen til OpenStreetmap tar det +ca. 15 minutter før endringen er synlig på kartet som alle kan se på +web. Dernest overføres det daglig til en kartdump som lastes ned av +personen som lager Garmin-kart for Norge ca. en gang i uken. Med +OpenStreetmap.org og <a href="http://www.frikart.no/">Frikart.no</a> +kan en altså ha korreksjonene på plass i sin Garmin-GPS i løpet av en +uke. Det er også av tekniske årsaker at det tar så langt tid. +Jobbene som tegner kartene, henter ut kartdumpene og konverterer til +Garmin-format tar minutter og timer å gjennomføre, slik at de ikke +gjøres kontinuerlig men kun regelmessing.</p> - På vegne av vanvitting mange, Aftenposten! - http://people.skolelinux.org/pere/blog/P___vegne_av_vanvitting_mange__Aftenposten_.html - http://people.skolelinux.org/pere/blog/P___vegne_av_vanvitting_mange__Aftenposten_.html - Sat, 6 Mar 2010 21:15:00 +0100 + Some notes on Flash in Debian and Debian Edu + http://people.skolelinux.org/pere/blog/Some_notes_on_Flash_in_Debian_and_Debian_Edu.html + http://people.skolelinux.org/pere/blog/Some_notes_on_Flash_in_Debian_and_Debian_Edu.html + Sat, 4 Sep 2010 10:10:00 +0200 -<p><a href="http://fotball.aftenposten.no/incoming/article163000.ece">Aftenposten -melder</a> på forsiden av webavisen sin at de tror Erling Fossen -provoserer nordlendinger med sine uttalelser på -fotballtinget. Jeg er utflyttet nordlending, og må innrømme at jeg -ikke kjennet så mye som et snev av provokasjon fra denne litt morsomme -uttalelsen til Hr. Fossen. Lurer på om Aftenposten har noen kilder -utenom redaksjonen for sin påstand om at nordledinger er provosert av -Hr. Fossen. Må innrømme at jeg tviler på det.</p> - -<p>Det hele bringer tankene tilbake til Sture Hansen i Hallo i Uken.</p> +<p>In the <a href="http://popcon.debian.org/unknown/by_vote">Debian +popularity-contest numbers</a>, the adobe-flashplugin package the +second most popular used package that is missing in Debian. The sixth +most popular is flashplayer-mozilla. This is a clear indication that +working flash is important for Debian users. Around 10 percent of the +users submitting data to popcon.debian.org have this package +installed.</p> + +<p>In the report written by Lars Risan in August 2008 +(«<a href="http://wiki.skolelinux.no/Dokumentasjon/Rapporter?action=AttachFile&do=view&target=Skolelinux_i_bruk_rapport_1.0.pdf">Skolelinux +i bruk – Rapport for Hurum kommune, Universitetet i Agder og +stiftelsen SLX Debian Labs</a>»), one of the most important problems +schools experienced with <a href="http://www.skolelinux.org/">Debian +Edu/Skolelinux</a> was the lack of working Flash. A lot of educational +web sites require Flash to work, and lacking working Flash support in +the web browser and the problems with installing it was perceived as a +good reason to stay with Windows.</p> + +<p>I once saw a funny and sad comment in a web forum, where Linux was +said to be the retarded cousin that did not really understand +everything you told him but could work fairly well. This was a +comment regarding the problems Linux have with proprietary formats and +non-standard web pages, and is sad because it exposes a fairly common +understanding of whose fault it is if web pages that only work in for +example Internet Explorer 6 fail to work on Firefox, and funny because +it explain very well how annoying it is for users when Linux +distributions do not work with the documents they receive or the web +pages they want to visit.</p> + +<p>This is part of the reason why I believe it is important for Debian +and Debian Edu to have a well working Flash implementation in the +distribution, to get at least popular sites as Youtube and Google +Video to working out of the box. For Squeeze, Debian have the chance +to include the latest version of Gnash that will make this happen, as +the new release 0.8.8 was published a few weeks ago and is resting in +unstable. The new version work with more sites that version 0.8.7. +The Gnash maintainers have asked for a freeze exception, but the +release team have not had time to reply to it yet. I hope they agree +with me that Flash is important for the Debian desktop users, and thus +accept the new package into Squeeze.</p> - After 6 years of waiting, the Xreset.d feature is implemented - http://people.skolelinux.org/pere/blog/After_6_years_of_waiting__the_Xreset_d_feature_is_implemented.html - http://people.skolelinux.org/pere/blog/After_6_years_of_waiting__the_Xreset_d_feature_is_implemented.html - Sat, 6 Mar 2010 18:15:00 +0100 + My first perl GUI application - controlling a Spykee robot + http://people.skolelinux.org/pere/blog/My_first_perl_GUI_application___controlling_a_Spykee_robot.html + http://people.skolelinux.org/pere/blog/My_first_perl_GUI_application___controlling_a_Spykee_robot.html + Wed, 1 Sep 2010 21:00:00 +0200 -<p>6 years ago, as part of the Debian Edu development I am involved -in, I asked for a hook in the kdm and gdm setup to run scripts as root -when the user log out. A bug was submitted against the xfree86-common -package in 2004 (<a href="http://bugs.debian.org/230422">#230422</a>), -and revisited every time Debian Edu was working on a new release. -Today, this finally paid off.</p> - -<p>The framework for this feature was today commited to the git -repositry for the xorg package, and the git repository for xdm has -been updated to use this framework. Next on my agenda is to make sure -kdm and gdm also add code to use this framework.</p> - -<p>In Debian Edu, we want to ability to run commands as root when the -user log out, to get rid of runaway processes and do general cleanup -after a user. With this framework in place, we finally can do that in -a generic way that work with all display managers using this -framework. My goal is to get all display managers in Debian use it, -similar to how they use the Xsession.d framework today.<p> +<p>This evening I made my first Perl GUI application. The last few +days I have worked on a Perl module for controlling my recently +aquired Spykee robots, and the module is now getting complete enought +that it is possible to use it to control the robot driving at least. +It was now time to figure out how to use it to create some GUI to +allow me to drive the robot around. I picked PerlQt as I have had +positive experiences with the Qt API before, and spent a few minutes +browsing the web for examples. Using Qt Designer seemed like a short +cut, so I ended up writing the perl GUI using Qt Designer and +compiling it into a perl program using the puic program from +libqt-perl. Nothing fancy yet, but it got buttons to connect and +drive around.</p> + +<p>The perl module I have written provide a object oriented API for +controlling the robot. Here is an small example on how to use it:</p> + +<p><pre> +use Spykee; +Spykee::discover(sub {$robot{$_[0]} = $_[1]}); +my $host = (keys %robot)[0]; +my $spykee = Spykee->new(); +$spykee->contact($host, "admin", "admin"); +$spykee->left(); +sleep 2; +$spykee->right(); +sleep 2; +$spykee->forward(); +sleep 2; +$spykee->back(); +sleep 2; +$spykee->stop(); +</pre></p> + +<p>Thanks to the release of the source of the robot firmware, I could +peek into the implementation at the other end to figure out how to +implement the protocol used by the robot. I've implemented several of +the commands the robot understand, but is still missing the camera +support to make it possible to control the robot from remote. First I +want to implement support for uploading new firmware and configuring +the wireless network, to make it possible to bootstrap a Spykee robot +without the producers Windows and MacOSX software (I only have Linux, +so I had to ask a friend to come over to get the robot testing +going. :).</p> + +<p>Will release the source to the public soon, but need to figure out +where to make it available first. I will add a link to +<a href="http://wiki.nuug.no/grupper/robot/">the NUUG wiki</a> for +those that want to check back later to find it.</p> - Digitale bøker uten digitale restriksjonsmekanismer (DRM) bør få mva-fritak - http://people.skolelinux.org/pere/blog/Digitale_b__ker_uten_digitale_restriksjonsmekanismer__DRM__b__r_f___mva_fritak.html - http://people.skolelinux.org/pere/blog/Digitale_b__ker_uten_digitale_restriksjonsmekanismer__DRM__b__r_f___mva_fritak.html - Wed, 3 Mar 2010 19:00:00 +0100 + Forslag i stortinget om å stoppe elektronisk stemmegiving i Norge + http://people.skolelinux.org/pere/blog/Forslag_i_stortinget_om____stoppe_elektronisk_stemmegiving_i_Norge.html + http://people.skolelinux.org/pere/blog/Forslag_i_stortinget_om____stoppe_elektronisk_stemmegiving_i_Norge.html + Tue, 31 Aug 2010 21:00:00 +0200 -<p>Den norske bokbransjen har -<a href="http://www.digi.no/823912/nei-til-moms-paa-e-boker">bedt om at -digitale bøker må få mva-fritak</a> slik papirbøker har det, og -<a href="http://www.digi.no/836875/moms-paa-alt-digitalt-innhold">finansdepartementet -har sagt nei</a>. Det er et interessant spørsmål om digitale bøker -bør ha mva-fritak eller ikke, og svaret er ikke så enkelt som et ja -eller nei. -<a href="http://www.digi.no/836925/norske-e-boker-truet-av-moms">Enkelte -medlemmer</a> av bokbransjen truer med å droppe den planlagte -lanseringen av norske digitale bøker med digitale restriksjonsmekanismer -(DRM) som de har snakket om å gjennomføre nå i vår, og det må de -gjerne gjøre for min del.</p> - -<p>Papirbøker har mva-fritak pga. at de fremmer kultur- og -kunnskapsspredning. Digitale bøker uten digitale -restriksjonsmekanismer (DRM) fremmer kultur- og kunnskapsspredning, -mens digitale bøker med DRM hindrer kultur og kunnskapsspredning. -Digitale bøker uten DRM bør få mva-fritak da det er salg av bøker på -lik linje med salg av papirbøker, mens digitale bøker med DRM ikke bør -få det da det er utleie av bøker og ikke salg.</p> - -<p>Jeg foretrekker å kjøpe bøker, og velger dermed å la være å bruke -DRM-belastede digitale bøker. Vet ikke helt hva jeg ville være villig -til å betale for å leie en bok, men tror ikke det er mange kronene. -Heldigvis er det mye bøker tilgjengelig uten slike restriksjoner, og -de som vil ha tak i engelske bøker kan laste ned bøker som er -tilgjengelig uten bruksbegresninger fra <a href="http://www.archive.org/">The -Internet Archive</a>. Der er det pr. i dag 1 889 313 bøker -tilgjengelig. De er tilgjengelig i flere formater. Besøk -<a href="http://www.archive.org/details/texts">oversikten over tekster -der</a> for å se hva de har. +<p>Ble tipset i dag om at et forslag om å stoppe forsøkene med +elektronisk stemmegiving utenfor valglokaler er +<a href="http://www.stortinget.no/no/Saker-og-publikasjoner/Saker/Sak/?p=46616">til +behandling</a> i Stortinget. +<a href="http://www.stortinget.no/Global/pdf/Representantforslag/2009-2010/dok8-200910-128.pdf">Forslaget</a> +er fremmet av Erna Solberg, Michael Tetzschner og Trond Helleland.</p> + +<p>Håper det får flertall.</p> - Debian Edu / Skolelinux based on Lenny released, work continues - http://people.skolelinux.org/pere/blog/Debian_Edu___Skolelinux_based_on_Lenny_released__work_continues.html - http://people.skolelinux.org/pere/blog/Debian_Edu___Skolelinux_based_on_Lenny_released__work_continues.html - Thu, 11 Feb 2010 17:15:00 +0100 + Broken hard link handling with sshfs + http://people.skolelinux.org/pere/blog/Broken_hard_link_handling_with_sshfs.html + http://people.skolelinux.org/pere/blog/Broken_hard_link_handling_with_sshfs.html + Mon, 30 Aug 2010 19:30:00 +0200 -<p>On Tuesday, the Debian/Lenny based version of -<a href="http://www.skolelinux.org/">Skolelinux</a> was finally -shipped. This was a major leap forward for the project, and I am very -pleased that we finally got the release wrapped up. Work on the first -point release starts imediately, as we plan to get that one out a -month after the major release, to include all fixes for bugs we found -and fixed too late in the release process to include last Tuesday.</p> - -<p>Perhaps it even is time for some partying?</p> - -<p>After this first point release, my plan is to focus again on the -next major release, based on Squeeze. We will try to get as many of -the fixes we need into the official Debian packages before the freeze, -and have just a few weeks or months to make it happen.</p> +<p>Just got an email from Tobias Gruetzmacher as a followup on my +<a href="http://people.skolelinux.org/pere/blog/Broken_umask_handling_with_sshfs.html">previous +post about sshfs</a>. He reported another problem with sshfs. It +fail to handle hard links properly. A simple way to spot this is to +look at the . and .. entries in the directory tree. These should have +a link count >1, but on sshfs the count is 1. I just tested to see +what happen when trying to hardlink, and this fail as well:</p> + +<pre> +% ln foo bar +ln: creating hard link `bar' => `foo': Function not implemented +% +</pre> + +<p>I have not yet found time to implement a test for this in my file +system test code, but believe having working hard links is useful to +avoid surprised unix programs. Not as useful as working file locking +and symlinks, which are required to get a working desktop, but useful +nevertheless. :)</p> + +<p>The latest version of the file system test code is available via +git from +<a href="http://github.com/gebi/fs-test">http://github.com/gebi/fs-test</a></p>