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  13  <h1>
  14      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16  </h1>
  17
  18 </div>
  19
  20
  21
  22     <div class="entry">
  23       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Coz_can_help_you_find_bottlenecks_in_multi_threaded_software___nice_free_software.html">Coz can help you find bottlenecks in multi-threaded software - nice free software</a></div>
  24       <div class="date">11th August 2016</div>
  25       <div class="body"><p>This summer, I read a great article
  26 "<a href="https://www.usenix.org/publications/login/summer2016/curtsinger">coz:
  27 This Is the Profiler You're Looking For</a>" in USENIX ;login: about
  28 how to profile multi-threaded programs.  It presented a system for
  29 profiling software by running experiences in the running program,
  30 testing how run time performance is affected by "speeding up" parts of
  31 the code to various degrees compared to a normal run.  It does this by
  32 slowing down parallel threads while the "faster up" code is running
  33 and measure how this affect processing time.  The processing time is
  34 measured using probes inserted into the code, either using progress
  35 counters (COZ_PROGRESS) or as latency meters (COZ_BEGIN/COZ_END).  It
  36 can also measure unmodified code by measuring complete the program
  37 runtime and running the program several times instead.</p>
  38
  39 <p>The project and presentation was so inspiring that I would like to
  40 get the system into Debian.  I
  41 <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=830708">created
  42 a WNPP request for it</a> and contacted upstream to try to make the
  43 system ready for Debian by sending patches.  The build process need to
  44 be changed a bit to avoid running 'git clone' to get dependencies, and
  45 to include the JavaScript web page used to visualize the collected
  46 profiling information included in the source package.
  47 But I expect that should work out fairly soon.</p>
  48
  49 <p>The way the system work is fairly simple.  To run an coz experiment
  50 on a binary with debug symbols available, start the program like this:
  51
  52 <p><blockquote><pre>
  53 coz run --- program-to-run
  54 </pre></blockquote></p>
  55
  56 <p>This will create a text file profile.coz with the instrumentation
  57 information.  To show what part of the code affect the performance
  58 most, use a web browser and either point it to
  59 <a href="http://plasma-umass.github.io/coz/">http://plasma-umass.github.io/coz/</a>
  60 or use the copy from git (in the gh-pages branch).  Check out this web
  61 site to have a look at several example profiling runs and get an idea what the end result from the profile runs look like.  To make the
  62 profiling more useful you include &lt;coz.h&gt; and insert the
  63 COZ_PROGRESS or COZ_BEGIN and COZ_END at appropriate places in the
  64 code, rebuild and run the profiler.  This allow coz to do more
  65 targeted experiments.</p>
  66
  67 <p>A video published by ACM
  68 <a href="https://www.youtube.com/watch?v=jE0V-p1odPg">presenting the
  69 Coz profiler</a> is available from Youtube.  There is also a paper
  70 from the 25th Symposium on Operating Systems Principles available
  71 titled
  72 <a href="https://www.usenix.org/conference/atc16/technical-sessions/presentation/curtsinger">Coz:
  73 finding code that counts with causal profiling</a>.</p>
  74
  75 <p><a href="https://github.com/plasma-umass/coz">The source code</a>
  76 for Coz is available from github.  It will only build with clang
  77 because it uses a
  78 <a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55606">C++
  79 feature missing in GCC</a>, but I've submitted
  80 <a href="https://github.com/plasma-umass/coz/pull/67">a patch to solve
  81 it</a> and hope it will be included in the upstream source soon.</p>
  82
  83 <p>Please get in touch if you, like me, would like to see this piece
  84 of software in Debian.  I would very much like some help with the
  85 packaging effort, as I lack the in depth knowledge on how to package
  86 C++ libraries.</p>
  87 </div>
  88       <div class="tags">
  89
  90
  91         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software</a>.
  92
  93
  94       </div>
  95     </div>
  96     <div class="padding"></div>
  97
  98     <div class="entry">
  99       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Sales_number_for_the_Free_Culture_translation__first_half_of_2016.html">Sales number for the Free Culture translation, first half of 2016</a></div>
 100       <div class="date"> 5th August 2016</div>
 101       <div class="body"><p>As my regular readers probably remember, the last year I published
 102 a French and Norwegian translation of the classic
 103 <a href="http://www.free-culture.cc/">Free Culture book</a> by the
 104 founder of the Creative Commons movement, Lawrence Lessig.  A bit less
 105 known is the fact that due to the way I created the translations,
 106 using docbook and po4a, I also recreated the English original.  And
 107 because I already had created a new the PDF edition, I published it
 108 too.  The revenue from the books are sent to the Creative Commons
 109 Corporation.  In other words, I do not earn any money from this
 110 project, I just earn the warm fuzzy feeling that the text is available
 111 for a wider audience and more people can learn why the Creative
 112 Commons is needed.</p>
 113
 114 <p>Today, just for fun, I had a look at the sales number over at
 115 Lulu.com, which take care of payment, printing and shipping.  Much to
 116 my surprise, the English edition is selling better than both the
 117 French and Norwegian edition, despite the fact that it has been
 118 available in English since it was first published.  In total, 24 paper
 119 books was sold for USD $19.99 between 2016-01-01 and 2016-07-31:</p>
 120
 121 <table border="0">
 122 <tr><th>Title / language</th><th>Quantity</th></tr>
 123 <tr><td><a href="http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html">Culture Libre / French</a></td><td align="right">3</td></tr>
 124 <tr><td><a href="http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html">Fri kultur / Norwegian</a></td><td align="right">7</td></tr>
 125 <tr><td><a href="http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22440520.html">Free Culture / English</a></td><td align="right">14</td></tr>
 126 </table>
 127
 128 <p>The books are available both from Lulu.com and from large book
 129 stores like Amazon and Barnes&Noble.  Most revenue, around $10 per
 130 book, is sent to the Creative Commons project when the book is sold
 131 directly by Lulu.com.  The other channels give less revenue.  The
 132 summary from Lulu tell me 10 books was sold via the Amazon channel, 10
 133 via Ingram (what is this?) and 4 directly by Lulu.  And Lulu.com tells
 134 me that the revenue sent so far this year is USD $101.42.  No idea
 135 what kind of sales numbers to expect, so I do not know if that is a
 136 good amount of sales for a 10 year old book or not.  But it make me
 137 happy that the buyers find the book, and I hope they enjoy reading it
 138 as much as I did.</p>
 139
 140 <p>The ebook edition is available for free from
 141 <a href="https://github.com/petterreinholdtsen/free-culture-lessig">Github</a>.</p>
 142
 143 <p>If you would like to translate and publish the book in your native
 144 language, I would be happy to help make it happen.  Please get in
 145 touch.</p>
 146 </div>
 147       <div class="tags">
 148
 149
 150         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture</a>.
 151
 152
 153       </div>
 154     </div>
 155     <div class="padding"></div>
 156
 157     <div class="entry">
 158       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Vitenskapen_tar_som_vanlig_feil_igjen___relativt_feil.html">Vitenskapen tar som vanlig feil igjen - relativt feil</a></div>
 159       <div class="date"> 1st August 2016</div>
 160       <div class="body"><p>For mange år siden leste jeg en klassisk tekst som gjorde såpass
 161 inntrykk på meg at jeg husker den fortsatt, flere år senere, og bruker
 162 argumentene fra den stadig vekk.  Teksten var «The Relativity of
 163 Wrong» som Isaac Asimov publiserte i Skeptical Inquirer i 1989.  Den
 164 gir litt perspektiv rundt formidlingen av vitenskapelige resultater.
 165 Jeg har hatt lyst til å kunne dele den også med folk som ikke
 166 behersker engelsk så godt, som barn og noen av mine eldre slektninger,
 167 og har savnet å ha den tilgjengelig på norsk.  For to uker siden tok
 168 jeg meg sammen og kontaktet Asbjørn Dyrendal i foreningen Skepsis om
 169 de var interessert i å publisere en norsk utgave på bloggen sin, og da
 170 han var positiv tok jeg kontakt med Skeptical Inquirer og spurte om
 171 det var greit for dem.  I løpet av noen dager fikk vi tilbakemelding
 172 fra Barry Karr hos The Skeptical Inquirer som hadde sjekket og fått OK
 173 fra Robyn Asimov som representerte arvingene i Asmiov-familien og gikk
 174 igang med oversettingen.</p>
 175
 176 <p>Resultatet, <a href="http://www.skepsis.no/?p=1617">«Relativt
 177 feil»</a>, ble publisert på skepsis-bloggen for noen minutter siden.
 178 Jeg anbefaler deg på det varmeste å lese denne teksten og dele den med
 179 dine venner.</p>
 180
 181 <p>For å håndtere oversettelsen og sikre at original og oversettelse
 182 var i sync brukte vi git, po4a, GNU make og Transifex.  Det hele
 183 fungerte utmerket og gjorde det enkelt å dele tekstene og jobbe sammen
 184 om finpuss på formuleringene.  Hadde hosted.weblate.org latt meg
 185 opprette nye prosjekter selv i stedet for å måtte kontakte
 186 administratoren der, så hadde jeg brukt weblate i stedet.</p>
 187 </div>
 188       <div class="tags">
 189
 190
 191         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis</a>.
 192
 193
 194       </div>
 195     </div>
 196     <div class="padding"></div>
 197
 198     <div class="entry">
 199       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Techno_TV_broadcasting_live_across_Norway_and_the_Internet___debconf16___nuug__on__frikanalen.html">Techno TV broadcasting live across Norway and the Internet (#debconf16, #nuug) on @frikanalen</a></div>
 200       <div class="date"> 1st August 2016</div>
 201       <div class="body"><p>Did you know there is a TV channel broadcasting talks from DebConf
 202 16 across an entire country?  Or that there is a TV channel
 203 broadcasting talks by or about
 204 <a href="http://beta.frikanalen.no/video/625529/">Linus Torvalds</a>,
 205 <a href="http://beta.frikanalen.no/video/625599/">Tor</a>,
 206 <a href="http://beta.frikanalen.no/video/624019/">OpenID</A>,
 207 <a href="http://beta.frikanalen.no/video/625624/">Common Lisp</a>,
 208 <a href="http://beta.frikanalen.no/video/625446/">Civic Tech</a>,
 209 <a href="http://beta.frikanalen.no/video/625090/">EFF founder John Barlow</a>,
 210 <a href="http://beta.frikanalen.no/video/625432/">how to make 3D
 211 printer electronics</a> and many more fascinating topics?  It works
 212 using only free software (all of it
 213 <a href="http://github.com/Frikanalen">available from Github</a>), and
 214 is administrated using a web browser and a web API.</p>
 215
 216 <p>The TV channel is the Norwegian open channel
 217 <a href="http://www.frikanalen.no/">Frikanalen</a>, and I am involved
 218 via <a href="https://www.nuug.no/">the NUUG member association</a> in
 219 running and developing the software for the channel.  The channel is
 220 organised as a member organisation where its members can upload and
 221 broadcast what they want (think of it as Youtube for national
 222 broadcasting television).  Individuals can broadcast too.  The time
 223 slots are handled on a first come, first serve basis.  Because the
 224 channel have almost no viewers and very few active members, we can
 225 experiment with TV technology without too much flack when we make
 226 mistakes.  And thanks to the few active members, most of the slots on
 227 the schedule are free.  I see this as an opportunity to spread
 228 knowledge about technology and free software, and have a script I run
 229 regularly to fill up all the open slots the next few days with
 230 technology related video.  The end result is a channel I like to
 231 describe as Techno TV - filled with interesting talks and
 232 presentations.</p>
 233
 234 <p>It is available on channel 50 on the Norwegian national digital TV
 235 network (RiksTV).  It is also available as a multicast stream on
 236 Uninett.  And finally, it is available as
 237 <a href="http://beta.frikanalen.no/">a WebM unicast stream</a> from
 238 Frikanalen and NUUG.  Check it out. :)</p>
 239 </div>
 240       <div class="tags">
 241
 242
 243         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 244
 245
 246       </div>
 247     </div>
 248     <div class="padding"></div>
 249
 250     <div class="entry">
 251       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Unlocking_HTC_Desire_HD_on_Linux_using_unruu_and_fastboot.html">Unlocking HTC Desire HD on Linux using unruu and fastboot</a></div>
 252       <div class="date"> 7th July 2016</div>
 253       <div class="body"><p>Yesterday, I tried to unlock a HTC Desire HD phone, and it proved
 254 to be a slight challenge.  Here is the recipe if I ever need to do it
 255 again.  It all started by me wanting to try the recipe to set up
 256 <a href="https://blog.torproject.org/blog/mission-impossible-hardening-android-security-and-privacy">an
 257 hardened Android installation</a> from the Tor project blog on a
 258 device I had access to.  It is a old mobile phone with a broken
 259 microphone The initial idea had been to just
 260 <a href="http://wiki.cyanogenmod.org/w/Install_CM_for_ace">install
 261 CyanogenMod on it</a>, but did not quite find time to start on it
 262 until a few days ago.</p>
 263
 264 <p>The unlock process is supposed to be simple: (1) Boot into the boot
 265 loader (press volume down and power at the same time), (2) select
 266 'fastboot' before (3) connecting the device via USB to a Linux
 267 machine, (4) request the device identifier token by running 'fastboot
 268 oem get_identifier_token', (5) request the device unlocking key using
 269 the <a href="http://www.htcdev.com/bootloader/">HTC developer web
 270 site</a> and unlock the phone using the key file emailed to you.</p>
 271
 272 <p>Unfortunately, this only work fi you have hboot version 2.00.0029
 273 or newer, and the device I was working on had 2.00.0027.  This
 274 apparently can be easily fixed by downloading a Windows program and
 275 running it on your Windows machine, if you accept the terms Microsoft
 276 require you to accept to use Windows - which I do not.  So I had to
 277 come up with a different approach.  I got a lot of help from AndyCap
 278 on #nuug, and would not have been able to get this working without
 279 him.</p>
 280
 281 <p>First I needed to extract the hboot firmware from
 282 <a href="http://www.htcdev.com/ruu/PD9810000_Ace_Sense30_S_hboot_2.00.0029.exe">the
 283 windows binary for HTC Desire HD</a> downloaded as 'the RUU' from HTC.
 284 For this there is is <a href="https://github.com/kmdm/unruu/">a github
 285 project named unruu</a> using libunshield.  The unshield tool did not
 286 recognise the file format, but unruu worked and extracted rom.zip,
 287 containing the new hboot firmware and a text file describing which
 288 devices it would work for.</p>
 289
 290 <p>Next, I needed to get the new firmware into the device.  For this I
 291 followed some instructions
 292 <a href="http://www.htc1guru.com/2013/09/new-ruu-zips-posted/">available
 293 from HTC1Guru.com</a>, and ran these commands as root on a Linux
 294 machine with Debian testing:</p>
 295
 296 <p><pre>
 297 adb reboot-bootloader
 298 fastboot oem rebootRUU
 299 fastboot flash zip rom.zip
 300 fastboot flash zip rom.zip
 301 fastboot reboot
 302 </pre></p>
 303
 304 <p>The flash command apparently need to be done twice to take effect,
 305 as the first is just preparations and the second one do the flashing.
 306 The adb command is just to get to the boot loader menu, so turning the
 307 device on while holding volume down and the power button should work
 308 too.</p>
 309
 310 <p>With the new hboot version in place I could start following the
 311 instructions on the HTC developer web site.  I got the device token
 312 like this:</p>
 313
 314 <p><pre>
 315 fastboot oem get_identifier_token 2>&1 | sed 's/(bootloader) //'
 316 </pre>
 317
 318 <p>And once I got the unlock code via email, I could use it like
 319 this:</p>
 320
 321 <p><pre>
 322 fastboot flash unlocktoken Unlock_code.bin
 323 </pre></p>
 324
 325 <p>And with that final step in place, the phone was unlocked and I
 326 could start stuffing the software of my own choosing into the device.
 327 So far I only inserted a replacement recovery image to wipe the phone
 328 before I start.  We will see what happen next.  Perhaps I should
 329 install <a href="https://www.debian.org/">Debian</a> on it. :)</p>
 330 </div>
 331       <div class="tags">
 332
 333
 334         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
 335
 336
 337       </div>
 338     </div>
 339     <div class="padding"></div>
 340
 341     <div class="entry">
 342       <div class="title"><a href="http://people.skolelinux.org/pere/blog/How_to_use_the_Signal_app_if_you_only_have_a_land_line__ie_no_mobile_phone_.html">How to use the Signal app if you only have a land line (ie no mobile phone)</a></div>
 343       <div class="date"> 3rd July 2016</div>
 344       <div class="body"><p>For a while now, I have wanted to test
 345 <a href="https://whispersystems.org/">the Signal app</a>, as it is
 346 said to provide end to end encrypted communication and several of my
 347 friends and family are already using it.  As I by choice do not own a
 348 mobile phone, this proved to be harder than expected.  And I wanted to
 349 have the source of the client and know that it was the code used on my
 350 machine.  But yesterday I managed to get it working.  I used the
 351 Github source, compared it to the source in
 352 <a href="https://chrome.google.com/webstore/detail/signal-private-messenger/bikioccmkafdpakkkcpdbppfkghcmihk?hl=en-US">the
 353 Signal Chrome app</a> available from the Chrome web store, applied
 354 patches to use the production Signal servers, started the app and
 355 asked for the hidden "register without a smart phone" form.  Here is
 356 the recipe how I did it.</p>
 357
 358 <p>First, I fetched the Signal desktop source from Github, using
 359
 360 <pre>
 361 git clone https://github.com/WhisperSystems/Signal-Desktop.git
 362 </pre>
 363
 364 <p>Next, I patched the source to use the production servers, to be
 365 able to talk to other Signal users:</p>
 366
 367 <pre>
 368 cat &lt;&lt;EOF | patch -p0
 369 diff -ur ./js/background.js userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/background.js
 370 --- ./js/background.js  2016-06-29 13:43:15.630344628 +0200
 371 +++ userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/background.js    2016-06-29 14:06:29.530300934 +0200
 372 @@ -47,8 +47,8 @@
 373          });
 374      });
 375
 376 -    var SERVER_URL = 'https://textsecure-service-staging.whispersystems.org';
 377 -    var ATTACHMENT_SERVER_URL = 'https://whispersystems-textsecure-attachments-staging.s3.amazonaws.com';
 378 +    var SERVER_URL = 'https://textsecure-service-ca.whispersystems.org:4433';
 379 +    var ATTACHMENT_SERVER_URL = 'https://whispersystems-textsecure-attachments.s3.amazonaws.com';
 380      var messageReceiver;
 381      window.getSocketStatus = function() {
 382          if (messageReceiver) {
 383 diff -ur ./js/expire.js userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/expire.js
 384 --- ./js/expire.js      2016-06-29 13:43:15.630344628 +0200
 385 +++ userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/expire.js2016-06-29 14:06:29.530300934 +0200
 386 @@ -1,6 +1,6 @@
 387  ;(function() {
 388      'use strict';
 389 -    var BUILD_EXPIRATION = 0;
 390 +    var BUILD_EXPIRATION = 1474492690000;
 391
 392      window.extension = window.extension || {};
 393
 394 EOF
 395 </pre>
 396
 397 <p>The first part is changing the servers, and the second is updating
 398 an expiration timestamp.  This timestamp need to be updated regularly.
 399 It is set 90 days in the future by the build process (Gruntfile.js).
 400 The value is seconds since 1970 times 1000, as far as I can tell.</p>
 401
 402 <p>Based on a tip and good help from the #nuug IRC channel, I wrote a
 403 script to launch Signal in Chromium.</p>
 404
 405 <pre>
 406 #!/bin/sh
 407 cd $(dirname $0)
 408 mkdir -p userdata
 409 exec chromium \
 410   --proxy-server="socks://localhost:9050" \
 411   --user-data-dir=`pwd`/userdata --load-and-launch-app=`pwd`
 412 </pre>
 413
 414 <p> The script start the app and configure Chromium to use the Tor
 415 SOCKS5 proxy to make sure those controlling the Signal servers (today
 416 Amazon and Whisper Systems) as well as those listening on the lines
 417 will have a harder time location my laptop based on the Signal
 418 connections if they use source IP address.</p>
 419
 420 <p>When the script starts, one need to follow the instructions under
 421 "Standalone Registration" in the CONTRIBUTING.md file in the git
 422 repository.  I right clicked on the Signal window to get up the
 423 Chromium debugging tool, visited the 'Console' tab and wrote
 424 'extension.install("standalone")' on the console prompt to get the
 425 registration form.  Then I entered by land line phone number and
 426 pressed 'Call'.  5 seconds later the phone rang and a robot voice
 427 repeated the verification code three times.  After entering the number
 428 into the verification code field in the form, I could start using
 429 Signal from my laptop.
 430
 431 <p>As far as I can tell, The Signal app will leak who is talking to
 432 whom and thus who know who to those controlling the central server,
 433 but such leakage is hard to avoid with a centrally controlled server
 434 setup.  It is something to keep in mind when using Signal - the
 435 content of your chats are harder to intercept, but the meta data
 436 exposing your contact network is available to people you do not know.
 437 So better than many options, but not great.  And sadly the usage is
 438 connected to my land line, thus allowing those controlling the server
 439 to associate it to my home and person.  I would prefer it if only
 440 those I knew could tell who I was on Signal.  There are options
 441 avoiding such information leakage, but most of my friends are not
 442 using them, so I am stuck with Signal for now.</p>
 443 </div>
 444       <div class="tags">
 445
 446
 447         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
 448
 449
 450       </div>
 451     </div>
 452     <div class="padding"></div>
 453
 454     <div class="entry">
 455       <div class="title"><a href="http://people.skolelinux.org/pere/blog/The_new__best__multimedia_player_in_Debian_.html">The new "best" multimedia player in Debian?</a></div>
 456       <div class="date"> 6th June 2016</div>
 457       <div class="body"><p>When I set out a few weeks ago to figure out
 458 <a href="http://people.skolelinux.org/pere/blog/What_is_the_best_multimedia_player_in_Debian_.html">which
 459 multimedia player in Debian claimed to support most file formats /
 460 MIME types</a>, I was a bit surprised how varied the sets of MIME types
 461 the various players claimed support for.  The range was from 55 to 130
 462 MIME types.  I suspect most media formats are supported by all
 463 players, but this is not really reflected in the MimeTypes values in
 464 their desktop files.  There are probably also some bogus MIME types
 465 listed, but it is hard to identify which one this is.</p>
 466
 467 <p>Anyway, in the mean time I got in touch with upstream for some of
 468 the players suggesting to add more MIME types to their desktop files,
 469 and decided to spend some time myself improving the situation for my
 470 favorite media player VLC.  The fixes for VLC entered Debian unstable
 471 yesterday. The complete list of MIME types can be seen on the
 472 <a href="https://wiki.debian.org/DebianMultimedia/PlayerSupport">Multimedia
 473 player MIME type support status</a> Debian wiki page.</p>
 474
 475 <p>The new "best" multimedia player in Debian?  It is VLC, followed by
 476 totem, parole, kplayer, gnome-mpv, mpv, smplayer, mplayer-gui and
 477 kmplayer.  I am sure some of the other players desktop files support
 478 several of the formats currently listed as working only with vlc,
 479 toten and parole.</p>
 480
 481 <p>A sad observation is that only 14 MIME types are listed as
 482 supported by all the tested multimedia players in Debian in their
 483 desktop files: audio/mpeg, audio/vnd.rn-realaudio, audio/x-mpegurl,
 484 audio/x-ms-wma, audio/x-scpls, audio/x-wav, video/mp4, video/mpeg,
 485 video/quicktime, video/vnd.rn-realvideo, video/x-matroska,
 486 video/x-ms-asf, video/x-ms-wmv and video/x-msvideo.  Personally I find
 487 it sad that video/ogg and video/webm is not supported by all the media
 488 players in Debian.  As far as I can tell, all of them can handle both
 489 formats.</p>
 490 </div>
 491       <div class="tags">
 492
 493
 494         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 495
 496
 497       </div>
 498     </div>
 499     <div class="padding"></div>
 500
 501     <div class="entry">
 502       <div class="title"><a href="http://people.skolelinux.org/pere/blog/A_program_should_be_able_to_open_its_own_files_on_Linux.html">A program should be able to open its own files on Linux</a></div>
 503       <div class="date"> 5th June 2016</div>
 504       <div class="body"><p>Many years ago, when koffice was fresh and with few users, I
 505 decided to test its presentation tool when making the slides for a
 506 talk I was giving for NUUG on Japhar, a free Java virtual machine.  I
 507 wrote the first draft of the slides, saved the result and went to bed
 508 the day before I would give the talk.  The next day I took a plane to
 509 the location where the meeting should take place, and on the plane I
 510 started up koffice again to polish the talk a bit, only to discover
 511 that kpresenter refused to load its own data file.  I cursed a bit and
 512 started making the slides again from memory, to have something to
 513 present when I arrived.  I tested that the saved files could be
 514 loaded, and the day seemed to be rescued.  I continued to polish the
 515 slides until I suddenly discovered that the saved file could no longer
 516 be loaded into kpresenter.  In the end I had to rewrite the slides
 517 three times, condensing the content until the talk became shorter and
 518 shorter.  After the talk I was able to pinpoint the problem &ndash;
 519 kpresenter wrote inline images in a way itself could not understand.
 520 Eventually that bug was fixed and kpresenter ended up being a great
 521 program to make slides.  The point I'm trying to make is that we
 522 expect a program to be able to load its own data files, and it is
 523 embarrassing to its developers if it can't.</p>
 524
 525 <p>Did you ever experience a program failing to load its own data
 526 files from the desktop file browser?  It is not a uncommon problem.  A
 527 while back I discovered that the screencast recorder
 528 gtk-recordmydesktop would save an Ogg Theora video file the KDE file
 529 browser would refuse to open.  No video player claimed to understand
 530 such file.  I tracked down the cause being <tt>file --mime-type</tt>
 531 returning the application/ogg MIME type, which no video player I had
 532 installed listed as a MIME type they would understand.  I asked for
 533 <a href="http://bugs.gw.com/view.php?id=382">file to change its
 534 behavour</a> and use the MIME type video/ogg instead.  I also asked
 535 several video players to add video/ogg to their desktop files, to give
 536 the file browser an idea what to do about Ogg Theora files.  After a
 537 while, the desktop file browsers in Debian started to handle the
 538 output from gtk-recordmydesktop properly.</p>
 539
 540 <p>But history repeats itself.  A few days ago I tested the music
 541 system Rosegarden again, and I discovered that the KDE and xfce file
 542 browsers did not know what to do with the Rosegarden project files
 543 (*.rg).  I've reported <a href="http://bugs.debian.org/825993">the
 544 rosegarden problem to BTS</a> and a fix is commited to git and will be
 545 included in the next upload.  To increase the chance of me remembering
 546 how to fix the problem next time some program fail to load its files
 547 from the file browser, here are some notes on how to fix it.</p>
 548
 549 <p>The file browsers in Debian in general operates on MIME types.
 550 There are two sources for the MIME type of a given file.  The output from
 551 <tt>file --mime-type</tt> mentioned above, and the content of the
 552 shared MIME type registry (under /usr/share/mime/).  The file MIME
 553 type is mapped to programs supporting the MIME type, and this
 554 information is collected from
 555 <a href="https://www.freedesktop.org/wiki/Specifications/desktop-entry-spec/">the
 556 desktop files</a> available in /usr/share/applications/.  If there is
 557 one desktop file claiming support for the MIME type of the file, it is
 558 activated when asking to open a given file.  If there are more, one
 559 can normally select which one to use by right-clicking on the file and
 560 selecting the wanted one using 'Open with' or similar.  In general
 561 this work well.  But it depend on each program picking a good MIME
 562 type (preferably
 563 <a href="http://www.iana.org/assignments/media-types/media-types.xhtml">a
 564 MIME type registered with IANA</a>), file and/or the shared MIME
 565 registry recognizing the file and the desktop file to list the MIME
 566 type in its list of supported MIME types.</p>
 567
 568 <p>The <tt>/usr/share/mime/packages/rosegarden.xml</tt> entry for
 569 <a href="http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec">the
 570 Shared MIME database</a> look like this:</p>
 571
 572 <p><blockquote><pre>
 573 &lt;?xml version="1.0" encoding="UTF-8"?&gt;
 574 &lt;mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info"&gt;
 575   &lt;mime-type type="audio/x-rosegarden"&gt;
 576     &lt;sub-class-of type="application/x-gzip"/&gt;
 577     &lt;comment&gt;Rosegarden project file&lt;/comment&gt;
 578     &lt;glob pattern="*.rg"/&gt;
 579   &lt;/mime-type&gt;
 580 &lt;/mime-info&gt;
 581 </pre></blockquote></p>
 582
 583 <p>This states that audio/x-rosegarden is a kind of application/x-gzip
 584 (it is a gzipped XML file).  Note, it is much better to use an
 585 official MIME type registered with IANA than it is to make up ones own
 586 unofficial ones like the x-rosegarden type used by rosegarden.</p>
 587
 588 <p>The desktop file of the rosegarden program failed to list
 589 audio/x-rosegarden in its list of supported MIME types, causing the
 590 file browsers to have no idea what to do with *.rg files:</p>
 591
 592 <p><blockquote><pre>
 593 % grep Mime /usr/share/applications/rosegarden.desktop
 594 MimeType=audio/x-rosegarden-composition;audio/x-rosegarden-device;audio/x-rosegarden-project;audio/x-rosegarden-template;audio/midi;
 595 X-KDE-NativeMimeType=audio/x-rosegarden-composition
 596 %
 597 </pre></blockquote></p>
 598
 599 <p>The fix was to add "audio/x-rosegarden;" at the end of the
 600 MimeType= line.</p>
 601
 602 <p>If you run into a file which fail to open the correct program when
 603 selected from the file browser, please check out the output from
 604 <tt>file --mime-type</tt> for the file, ensure the file ending and
 605 MIME type is registered somewhere under /usr/share/mime/ and check
 606 that some desktop file under /usr/share/applications/ is claiming
 607 support for this MIME type.  If not, please report a bug to have it
 608 fixed. :)</p>
 609 </div>
 610       <div class="tags">
 611
 612
 613         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 614
 615
 616       </div>
 617     </div>
 618     <div class="padding"></div>
 619
 620     <div class="entry">
 621       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Tor___from_its_creators_mouth_11_years_ago.html">Tor - from its creators mouth 11 years ago</a></div>
 622       <div class="date">28th May 2016</div>
 623       <div class="body"><p>A little more than 11 years ago, one of the creators of Tor, and
 624 the current President of <a href="https://www.torproject.org/">the Tor
 625 project</a>, Roger Dingledine, gave a talk for the members of the
 626 <a href="http://www.nuug.no/">Norwegian Unix User group</a> (NUUG).  A
 627 video of the talk was recorded, and today, thanks to the great help
 628 from David Noble, I finally was able to publish the video of the talk
 629 on Frikanalen, the Norwegian open channel TV station where NUUG
 630 currently publishes its talks.  You can
 631 <a href="http://frikanalen.no/se">watch the live stream using a web
 632 browser</a> with WebM support, or check out the recording on the video
 633 on demand page for the talk
 634 "<a href="http://beta.frikanalen.no/video/625599">Tor: Anonymous
 635 communication for the US Department of Defence...and you.</a>".</p>
 636
 637 <p>Here is the video included for those of you using browsers with
 638 HTML video and Ogg Theora support:</p>
 639
 640 <p><video width="70%" poster="http://simula.gunkies.org/media/625599/large_thumb/20050421-tor-frikanalen.jpg" controls>
 641   <source src="http://simula.gunkies.org/media/625599/theora/20050421-tor-frikanalen.ogv" type="video/ogg"/>
 642 </video></p>
 643
 644 <p>I guess the gist of the talk can be summarised quite simply: If you
 645 want to help the military in USA (and everyone else), use Tor. :)</p>
 646 </div>
 647       <div class="tags">
 648
 649
 650         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 651
 652
 653       </div>
 654     </div>
 655     <div class="padding"></div>
 656
 657     <div class="entry">
 658       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Isenkram_with_PackageKit_support___new_version_0_23_available_in_Debian_unstable.html">Isenkram with PackageKit support - new version 0.23 available in Debian unstable</a></div>
 659       <div class="date">25th May 2016</div>
 660       <div class="body"><p><a href="https://tracker.debian.org/pkg/isenkram">The isenkram
 661 system</a> is a user-focused solution in Debian for handling hardware
 662 related packages.  The idea is to have a database of mappings between
 663 hardware and packages, and pop up a dialog suggesting for the user to
 664 install the packages to use a given hardware dongle.  Some use cases
 665 are when you insert a Yubikey, it proposes to install the software
 666 needed to control it; when you insert a braille reader list it
 667 proposes to install the packages needed to send text to the reader;
 668 and when you insert a ColorHug screen calibrator it suggests to
 669 install the driver for it.  The system work well, and even have a few
 670 command line tools to install firmware packages and packages for the
 671 hardware already in the machine (as opposed to hotpluggable hardware).</p>
 672
 673 <p>The system was initially written using aptdaemon, because I found
 674 good documentation and example code on how to use it.  But aptdaemon
 675 is going away and is generally being replaced by
 676 <a href="http://www.freedesktop.org/software/PackageKit/">PackageKit</a>,
 677 so Isenkram needed a rewrite.  And today, thanks to the great patch
 678 from my college Sunil Mohan Adapa in the FreedomBox project, the
 679 rewrite finally took place.  I've just uploaded a new version of
 680 Isenkram into Debian Unstable with the patch included, and the default
 681 for the background daemon is now to use PackageKit.  To check it out,
 682 install the <tt>isenkram</tt> package and insert some hardware dongle
 683 and see if it is recognised.</p>
 684
 685 <p>If you want to know what kind of packages isenkram would propose for
 686 the machine it is running on, you can check out the isenkram-lookup
 687 program.  This is what it look like on a Thinkpad X230:</p>
 688
 689 <p><blockquote><pre>
 690 % isenkram-lookup
 691 bluez
 692 cheese
 693 fprintd
 694 fprintd-demo
 695 gkrellm-thinkbat
 696 hdapsd
 697 libpam-fprintd
 698 pidgin-blinklight
 699 thinkfan
 700 tleds
 701 tp-smapi-dkms
 702 tp-smapi-source
 703 tpb
 704 %p
 705 </pre></blockquote></p>
 706
 707 <p>The hardware mappings come from several places.  The preferred way
 708 is for packages to announce their hardware support using
 709 <a href="https://www.freedesktop.org/software/appstream/docs/">the
 710 cross distribution appstream system</a>.
 711 See
 712 <a href="http://people.skolelinux.org/pere/blog/tags/isenkram/">previous
 713 blog posts about isenkram</a> to learn how to do that.</p>
 714 </div>
 715       <div class="tags">
 716
 717
 718         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram</a>.
 719
 720
 721       </div>
 722     </div>
 723     <div class="padding"></div>
 724
 725     <p style="text-align: right;"><a href="index.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS feed" width="36" height="14" /></a></p>
 726     <div id="sidebar">
 727
 728
 729
 730 <h2>Archive</h2>
 731 <ul>
 732
 733 <li>2016
 734 <ul>
 735
 736 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 737
 738 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 739
 740 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 741
 742 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 743
 744 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 745
 746 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 747
 748 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 749
 750 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (4)</a></li>
 751
 752 </ul></li>
 753
 754 <li>2015
 755 <ul>
 756
 757 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 758
 759 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 760
 761 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 762
 763 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 764
 765 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 766
 767 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 768
 769 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 770
 771 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 772
 773 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 774
 775 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 776
 777 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 778
 779 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 780
 781 </ul></li>
 782
 783 <li>2014
 784 <ul>
 785
 786 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 787
 788 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 789
 790 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 791
 792 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 793
 794 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 795
 796 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 797
 798 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 799
 800 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 801
 802 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 803
 804 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 805
 806 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 807
 808 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 809
 810 </ul></li>
 811
 812 <li>2013
 813 <ul>
 814
 815 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 816
 817 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 818
 819 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 820
 821 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 822
 823 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 824
 825 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 826
 827 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 828
 829 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 830
 831 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 832
 833 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 834
 835 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 836
 837 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 838
 839 </ul></li>
 840
 841 <li>2012
 842 <ul>
 843
 844 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 845
 846 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 847
 848 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 849
 850 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 851
 852 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 853
 854 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 855
 856 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 857
 858 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 859
 860 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 861
 862 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 863
 864 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 865
 866 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 867
 868 </ul></li>
 869
 870 <li>2011
 871 <ul>
 872
 873 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 874
 875 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 876
 877 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 878
 879 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 880
 881 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 882
 883 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 884
 885 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 886
 887 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 888
 889 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 890
 891 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 892
 893 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 894
 895 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 896
 897 </ul></li>
 898
 899 <li>2010
 900 <ul>
 901
 902 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 903
 904 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 905
 906 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 907
 908 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 909
 910 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 911
 912 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 913
 914 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 915
 916 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 917
 918 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 919
 920 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 921
 922 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 923
 924 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 925
 926 </ul></li>
 927
 928 <li>2009
 929 <ul>
 930
 931 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 932
 933 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 934
 935 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 936
 937 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 938
 939 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 940
 941 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 942
 943 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 944
 945 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 946
 947 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 948
 949 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 950
 951 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 952
 953 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 954
 955 </ul></li>
 956
 957 <li>2008
 958 <ul>
 959
 960 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 961
 962 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 963
 964 </ul></li>
 965
 966 </ul>
 967
 968
 969
 970 <h2>Tags</h2>
 971 <ul>
 972
 973  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
 974
 975  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 976
 977  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 978
 979  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 980
 981  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (9)</a></li>
 982
 983  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (16)</a></li>
 984
 985  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 986
 987  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 988
 989  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (134)</a></li>
 990
 991  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (157)</a></li>
 992
 993  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
 994
 995  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (15)</a></li>
 996
 997  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (23)</a></li>
 998
 999  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1000
1001  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (326)</a></li>
1002
1003  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1004
1005  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
1006
1007  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (28)</a></li>
1008
1009  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1010
1011  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1012
1013  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1014
1015  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1016
1017  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (12)</a></li>
1018
1019  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (19)</a></li>
1020
1021  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1022
1023  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1024
1025  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1026
1027  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1028
1029  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1030
1031  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (39)</a></li>
1032
1033  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (8)</a></li>
1034
1035  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (276)</a></li>
1036
1037  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (182)</a></li>
1038
1039  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (26)</a></li>
1040
1041  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1042
1043  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (61)</a></li>
1044
1045  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (92)</a></li>
1046
1047  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (1)</a></li>
1048
1049  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1050
1051  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1052
1053  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1054
1055  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (9)</a></li>
1056
1057  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1058
1059  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (4)</a></li>
1060
1061  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1062
1063  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (48)</a></li>
1064
1065  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1066
1067  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1068
1069  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (49)</a></li>
1070
1071  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (4)</a></li>
1072
1073  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (10)</a></li>
1074
1075  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (37)</a></li>
1076
1077  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (2)</a></li>
1078
1079  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1080
1081  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (8)</a></li>
1082
1083  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (59)</a></li>
1084
1085  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1086
1087  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (38)</a></li>
1088
1089 </ul>
1090
1091
1092     </div>
1093     <p style="text-align: right">
1094  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1095 </p>
1096
1097   </body>
1098 </html>