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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/I_spent_last_weekend_recording_MakerCon_Nordic.html">I spent last weekend recording MakerCon Nordic</a></div>
  24       <div class="date">23rd October 2014</div>
  25       <div class="body"><p>I spent last weekend at <a href="http://www.makercon.no/">Makercon
  26 Nordic</a>, a great conference and workshop for makers in Norway and
  27 the surrounding countries.  I had volunteered on behalf of the
  28 Norwegian Unix Users Group (NUUG) to video record the talks, and we
  29 had a great and exhausting time recording the entire day, two days in
  30 a row.  There were only two of us, Hans-Petter and me, and we used the
  31 regular video equipment for NUUG, with a
  32 <a href="http://dvswitch.alioth.debian.org/wiki/">dvswitch</a>, a
  33 camera and a VGA to DV convert box, and mixed video and slides
  34 live.</p>
  35
  36 <p>Hans-Petter did the post-processing, consisting of uploading the
  37 around 180 GiB of raw video to Youtube, and the result is
  38 <a href="https://www.youtube.com/user/MakerConNordic/">now becoming
  39 public</a> on the MakerConNordic account.  The videos have the license
  40 NUUG always use on our recordings, which is
  41 <a href="http://creativecommons.org/licenses/by-sa/3.0/no/">Creative
  42 Commons Navngivelse-Del på samme vilkår 3.0 Norge</a>.  Many great
  43 talks available.  Check it out! :)</p>
  44 </div>
  45       <div class="tags">
  46
  47
  48         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
  49
  50
  51       </div>
  52     </div>
  53     <div class="padding"></div>
  54
  55     <div class="entry">
  56       <div class="title"><a href="http://people.skolelinux.org/pere/blog/listadmin__the_quick_way_to_moderate_mailman_lists___nice_free_software.html">listadmin, the quick way to moderate mailman lists - nice free software</a></div>
  57       <div class="date">22nd October 2014</div>
  58       <div class="body"><p>If you ever had to moderate a mailman list, like the ones on
  59 alioth.debian.org, you know the web interface is fairly slow to
  60 operate.  First you visit one web page, enter the moderation password
  61 and get a new page shown with a list of all the messages to moderate
  62 and various options for each email address.  This take a while for
  63 every list you moderate, and you need to do it regularly to do a good
  64 job as a list moderator.  But there is a quick alternative,
  65 <a href="http://heim.ifi.uio.no/kjetilho/hacks/#listadmin">the
  66 listadmin program</a>.  It allow you to check lists for new messages
  67 to moderate in a fraction of a second.  Here is a test run on two
  68 lists I recently took over:</p>
  69
  70 <p><blockquote><pre>
  71 % time listadmin xiph
  72 fetching data for pkg-xiph-commits@lists.alioth.debian.org ... nothing in queue
  73 fetching data for pkg-xiph-maint@lists.alioth.debian.org ... nothing in queue
  74
  75 real    0m1.709s
  76 user    0m0.232s
  77 sys     0m0.012s
  78 %
  79 </pre></blockquote></p>
  80
  81 <p>In 1.7 seconds I had checked two mailing lists and confirmed that
  82 there are no message in the moderation queue.  Every morning I
  83 currently moderate 68 mailman lists, and it normally take around two
  84 minutes.  When I took over the two pkg-xiph lists above a few days
  85 ago, there were 400 emails waiting in the moderator queue.  It took me
  86 less than 15 minutes to process them all using the listadmin
  87 program.</p>
  88
  89 <p>If you install
  90 <a href="https://tracker.debian.org/pkg/listadmin">the listadmin
  91 package</a> from Debian and create a file <tt>~/.listadmin.ini</tt>
  92 with content like this, the moderation task is a breeze:</p>
  93
  94 <p><blockquote><pre>
  95 username username@example.org
  96 spamlevel 23
  97 default discard
  98 discard_if_reason "Posting restricted to members only. Remove us from your mail list."
  99
 100 password secret
 101 adminurl https://{domain}/mailman/admindb/{list}
 102 mailman-list@lists.example.com
 103
 104 password hidden
 105 other-list@otherserver.example.org
 106 </pre></blockquote></p>
 107
 108 <p>There are other options to set as well.  Check the manual page to
 109 learn the details.</p>
 110
 111 <p>If you are forced to moderate lists on a mailman installation where
 112 the SSL certificate is self signed or not properly signed by a
 113 generally accepted signing authority, you can set a environment
 114 variable when calling listadmin to disable SSL verification:</p>
 115
 116 <p><blockquote><pre>
 117 PERL_LWP_SSL_VERIFY_HOSTNAME=0 listadmin
 118 </pre></blockquote></p>
 119
 120 <p>If you want to moderate a subset of the lists you take care of, you
 121 can provide an argument to the listadmin script like I do in the
 122 initial screen dump (the xiph argument).  Using an argument, only
 123 lists matching the argument string will be processed.  This make it
 124 quick to accept messages if you notice the moderation request in your
 125 email.</p>
 126
 127 <p>Without the listadmin program, I would never be the moderator of 68
 128 mailing lists, as I simply do not have time to spend on that if the
 129 process was any slower. The listadmin program have saved me hours of
 130 time I could spend elsewhere over the years.  It truly is nice free
 131 software.</p>
 132
 133 <p>As usual, if you use Bitcoin and want to show your support of my
 134 activities, please send Bitcoin donations to my address
 135 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 136
 137 <p>Update 2014-10-27: Added missing 'username' statement in
 138 configuration example.  Also, I've been told that the
 139 PERL_LWP_SSL_VERIFY_HOSTNAME=0 setting do not work for everyone.  Not
 140 sure why.</p>
 141 </div>
 142       <div class="tags">
 143
 144
 145         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>.
 146
 147
 148       </div>
 149     </div>
 150     <div class="padding"></div>
 151
 152     <div class="entry">
 153       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Jessie__PXE_and_automatic_firmware_installation.html">Debian Jessie, PXE and automatic firmware installation</a></div>
 154       <div class="date">17th October 2014</div>
 155       <div class="body"><p>When PXE installing laptops with Debian, I often run into the
 156 problem that the WiFi card require some firmware to work properly.
 157 And it has been a pain to fix this using preseeding in Debian.
 158 Normally something more is needed.  But thanks to
 159 <a href="https://packages.qa.debian.org/i/isenkram.html">my isenkram
 160 package</a> and its recent tasksel extension, it has now become easy
 161 to do this using simple preseeding.</p>
 162
 163 <p>The isenkram-cli package provide tasksel tasks which will install
 164 firmware for the hardware found in the machine (actually, requested by
 165 the kernel modules for the hardware).  (It can also install user space
 166 programs supporting the hardware detected, but that is not the focus
 167 of this story.)</p>
 168
 169 <p>To get this working in the default installation, two preeseding
 170 values are needed.  First, the isenkram-cli package must be installed
 171 into the target chroot (aka the hard drive) before tasksel is executed
 172 in the pkgsel step of the debian-installer system.  This is done by
 173 preseeding the base-installer/includes debconf value to include the
 174 isenkram-cli package.  The package name is next passed to debootstrap
 175 for installation.  With the isenkram-cli package in place, tasksel
 176 will automatically use the isenkram tasks to detect hardware specific
 177 packages for the machine being installed and install them, because
 178 isenkram-cli contain tasksel tasks.</p>
 179
 180 <p>Second, one need to enable the non-free APT repository, because
 181 most firmware unfortunately is non-free.  This is done by preseeding
 182 the apt-mirror-setup step.  This is unfortunate, but for a lot of
 183 hardware it is the only option in Debian.</p>
 184
 185 <p>The end result is two lines needed in your preseeding file to get
 186 firmware installed automatically by the installer:</p>
 187
 188 <p><blockquote><pre>
 189 base-installer base-installer/includes string isenkram-cli
 190 apt-mirror-setup apt-setup/non-free boolean true
 191 </pre></blockquote></p>
 192
 193 <p>The current version of isenkram-cli in testing/jessie will install
 194 both firmware and user space packages when using this method.  It also
 195 do not work well, so use version 0.15 or later.  Installing both
 196 firmware and user space packages might give you a bit more than you
 197 want, so I decided to split the tasksel task in two, one for firmware
 198 and one for user space programs.  The firmware task is enabled by
 199 default, while the one for user space programs is not.  This split is
 200 implemented in the package currently in unstable.</p>
 201
 202 <p>If you decide to give this a go, please let me know (via email) how
 203 this recipe work for you. :)</p>
 204
 205 <p>So, I bet you are wondering, how can this work.  First and
 206 foremost, it work because tasksel is modular, and driven by whatever
 207 files it find in /usr/lib/tasksel/ and /usr/share/tasksel/.  So the
 208 isenkram-cli package place two files for tasksel to find.  First there
 209 is the task description file (/usr/share/tasksel/descs/isenkram.desc):</p>
 210
 211 <p><blockquote><pre>
 212 Task: isenkram-packages
 213 Section: hardware
 214 Description: Hardware specific packages (autodetected by isenkram)
 215  Based on the detected hardware various hardware specific packages are
 216  proposed.
 217 Test-new-install: show show
 218 Relevance: 8
 219 Packages: for-current-hardware
 220
 221 Task: isenkram-firmware
 222 Section: hardware
 223 Description: Hardware specific firmware packages (autodetected by isenkram)
 224  Based on the detected hardware various hardware specific firmware
 225  packages are proposed.
 226 Test-new-install: mark show
 227 Relevance: 8
 228 Packages: for-current-hardware-firmware
 229 </pre></blockquote></p>
 230
 231 <p>The key parts are Test-new-install which indicate how the task
 232 should be handled and the Packages line referencing to a script in
 233 /usr/lib/tasksel/packages/.  The scripts use other scripts to get a
 234 list of packages to install.  The for-current-hardware-firmware script
 235 look like this to list relevant firmware for the machine:
 236
 237 <p><blockquote><pre>
 238 #!/bin/sh
 239 #
 240 PATH=/usr/sbin:$PATH
 241 export PATH
 242 isenkram-autoinstall-firmware -l
 243 </pre></blockquote></p>
 244
 245 <p>With those two pieces in place, the firmware is installed by
 246 tasksel during the normal d-i run. :)</p>
 247
 248 <p>If you want to test what tasksel will install when isenkram-cli is
 249 installed, run <tt>DEBIAN_PRIORITY=critical tasksel --test
 250 --new-install</tt> to get the list of packages that tasksel would
 251 install.</p>
 252
 253 <p><a href="https://wiki.debian.org/DebianEdu/">Debian Edu</a> will be
 254 pilots in testing this feature, as isenkram is used there now to
 255 install firmware, replacing the earlier scripts.</p>
 256 </div>
 257       <div class="tags">
 258
 259
 260         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>, <a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin</a>.
 261
 262
 263       </div>
 264     </div>
 265     <div class="padding"></div>
 266
 267     <div class="entry">
 268       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Ubuntu_used_to_show_the_bread_prizes_at_ICA_Storo.html">Ubuntu used to show the bread prizes at ICA Storo</a></div>
 269       <div class="date"> 4th October 2014</div>
 270       <div class="body"><p>Today I came across an unexpected Ubuntu boot screen.  Above the
 271 bread shelf on the ICA shop at Storo in Oslo, the grub menu of Ubuntu
 272 with Linux kernel 3.2.0-23 (ie probably version 12.04 LTS) was stuck
 273 on a screen normally showing the bread types and prizes:</p>
 274
 275 <p align="center"><img width="70%" src="http://people.skolelinux.org/pere/blog/images/2014-10-04-ubuntu-ica-storo-crop.jpeg"></p>
 276
 277 <p>If it had booted as it was supposed to, I would never had known
 278 about this hidden Linux installation.  It is interesting what
 279 <a href="http://revealingerrors.com/">errors can reveal</a>.</p>
 280 </div>
 281       <div class="tags">
 282
 283
 284         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>.
 285
 286
 287       </div>
 288     </div>
 289     <div class="padding"></div>
 290
 291     <div class="entry">
 292       <div class="title"><a href="http://people.skolelinux.org/pere/blog/New_lsdvd_release_version_0_17_is_ready.html">New lsdvd release version 0.17 is ready</a></div>
 293       <div class="date"> 4th October 2014</div>
 294       <div class="body"><p>The <a href="https://sourceforge.net/p/lsdvd/">lsdvd project</a>
 295 got a new set of developers a few weeks ago, after the original
 296 developer decided to step down and pass the project to fresh blood.
 297 This project is now maintained by Petter Reinholdtsen and Steve
 298 Dibb.</p>
 299
 300 <p>I just wrapped up
 301 <a href="https://sourceforge.net/p/lsdvd/mailman/message/32896061/">a
 302 new lsdvd release</a>, available in git or from
 303 <a href="https://sourceforge.net/projects/lsdvd/files/lsdvd/">the
 304 download page</a>.  This is the changelog dated 2014-10-03 for version
 305 0.17.</p>
 306
 307 <ul>
 308
 309  <li>Ignore 'phantom' audio, subtitle tracks</li>
 310  <li>Check for garbage in the program chains, which indicate that a track is
 311    non-existant, to work around additional copy protection</li>
 312  <li>Fix displaying content type for audio tracks, subtitles</li>
 313  <li>Fix pallete display of first entry</li>
 314  <li>Fix include orders</li>
 315  <li>Ignore read errors in titles that would not be displayed anyway</li>
 316  <li>Fix the chapter count</li>
 317  <li>Make sure the array size and the array limit used when initialising
 318    the palette size is the same.</li>
 319  <li>Fix array printing.</li>
 320  <li>Correct subsecond calculations.</li>
 321  <li>Add sector information to the output format.</li>
 322  <li>Clean up code to be closer to ANSI C and compile without warnings
 323    with more GCC compiler warnings.</li>
 324
 325 </ul>
 326
 327 <p>This change bring together patches for lsdvd in use in various
 328 Linux and Unix distributions, as well as patches submitted to the
 329 project the last nine years.  Please check it out. :)</p>
 330 </div>
 331       <div class="tags">
 332
 333
 334         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/lsdvd">lsdvd</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</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_test_Debian_Edu_Jessie_despite_some_fatal_problems_with_the_installer.html">How to test Debian Edu Jessie despite some fatal problems with the installer</a></div>
 343       <div class="date">26th September 2014</div>
 344       <div class="body"><p>The <a href="http://www.skolelinux.org/">Debian Edu / Skolelinux
 345 project</a> provide a Linux solution for schools, including a
 346 powerful desktop with education software, a central server providing
 347 web pages, user database, user home directories, central login and PXE
 348 boot of both  clients without disk and the installation to install Debian
 349 Edu on machines with disk (and a few other services perhaps to small
 350 to mention here).  We in the Debian Edu team are currently working on
 351 the Jessie based version, trying to get everything in shape before the
 352 freeze, to avoid having to maintain our own package repository in the
 353 future.  The
 354 <a href="https://wiki.debian.org/DebianEdu/Status/Jessie">current
 355 status</a> can be seen on the Debian wiki, and there is still heaps of
 356 work left.  Some fatal problems block testing, breaking the installer,
 357 but it is possible to work around these to get anyway.  Here is a
 358 recipe on how to get the installation limping along.</p>
 359
 360 <p>First, download the test ISO via
 361 <a href="ftp://ftp.skolelinux.no/cd-edu-testing-nolocal-netinst/debian-edu-amd64-i386-NETINST-1.iso">ftp</a>,
 362 <a href="http://ftp.skolelinux.no/cd-edu-testing-nolocal-netinst/debian-edu-amd64-i386-NETINST-1.iso">http</a>
 363 or rsync (use
 364 ftp.skolelinux.org::cd-edu-testing-nolocal-netinst/debian-edu-amd64-i386-NETINST-1.iso).
 365 The ISO build was broken on Tuesday, so we do not get a new ISO every
 366 12 hours or so, but thankfully the ISO we already got we are able to
 367 install with some tweaking.</p>
 368
 369 <p>When you get to the Debian Edu profile question, go to tty2
 370 (use Alt-Ctrl-F2), run</p>
 371
 372 <p><blockquote><pre>
 373 nano /usr/bin/edu-eatmydata-install
 374 </pre></blockquote></p>
 375
 376 <p>and add 'exit 0' as the second line, disabling the eatmydata
 377 optimization.  Return to the installation, select the profile you want
 378 and continue.  Without this change, exim4-config will fail to install
 379 due to a known bug in eatmydata.</p>
 380
 381 <p>When you get the grub question at the end, answer /dev/sda (or if
 382 this do not work, figure out what your correct value would be.  All my
 383 test machines need /dev/sda, so I have no advice if it do not fit
 384 your need.</p>
 385
 386 <p>If you installed a profile including a graphical desktop, log in as
 387 root after the initial boot from hard drive, and install the
 388 education-desktop-XXX metapackage.  XXX can be kde, gnome, lxde, xfce
 389 or mate.  If you want several desktop options, install more than one
 390 metapackage.  Once this is done, reboot and you should have a working
 391 graphical login screen.  This workaround should no longer be needed
 392 once the education-tasks package version 1.801 enter testing in two
 393 days.</p>
 394
 395 <p>I believe the ISO build will start working on two days when the new
 396 tasksel package enter testing and Steve McIntyre get a chance to
 397 update the debian-cd git repository.  The eatmydata, grub and desktop
 398 issues are already fixed in unstable and testing, and should show up
 399 on the ISO as soon as the ISO build start working again.  Well the
 400 eatmydata optimization is really just disabled.  The proper fix
 401 require an upload by the eatmydata maintainer applying the patch
 402 provided in bug <a href="https://bugs.debian.org/702711">#702711</a>.
 403 The rest have proper fixes in unstable.</p>
 404
 405 <p>I hope this get you going with the installation testing, as we are
 406 quickly running out of time trying to get our Jessie based
 407 installation ready before the distribution freeze in a month.</p>
 408 </div>
 409       <div class="tags">
 410
 411
 412         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>.
 413
 414
 415       </div>
 416     </div>
 417     <div class="padding"></div>
 418
 419     <div class="entry">
 420       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Suddenly_I_am_the_new_upstream_of_the_lsdvd_command_line_tool.html">Suddenly I am the new upstream of the lsdvd command line tool</a></div>
 421       <div class="date">25th September 2014</div>
 422       <div class="body"><p>I use the <a href="https://sourceforge.net/p/lsdvd/">lsdvd tool</a>
 423 to handle my fairly large DVD collection.  It is a nice command line
 424 tool to get details about a DVD, like title, tracks, track length,
 425 etc, in XML, Perl or human readable format.  But lsdvd have not seen
 426 any new development since 2006 and had a few irritating bugs affecting
 427 its use with some DVDs.  Upstream seemed to be dead, and in January I
 428 sent a small probe asking for a version control repository for the
 429 project, without any reply.  But I use it regularly and would like to
 430 get <a href="https://packages.qa.debian.org/lsdvd">an updated version
 431 into Debian</a>.  So two weeks ago I tried harder to get in touch with
 432 the project admin, and after getting a reply from him explaining that
 433 he was no longer interested in the project, I asked if I could take
 434 over.  And yesterday, I became project admin.</p>
 435
 436 <p>I've been in touch with a Gentoo developer and the Debian
 437 maintainer interested in joining forces to maintain the upstream
 438 project, and I hope we can get a new release out fairly quickly,
 439 collecting the patches spread around on the internet into on place.
 440 I've added the relevant Debian patches to the freshly created git
 441 repository, and expect the Gentoo patches to make it too.  If you got
 442 a DVD collection and care about command line tools, check out
 443 <a href="https://sourceforge.net/p/lsdvd/git/ci/master/tree/">the git source</a> and join
 444 <a href="https://sourceforge.net/p/lsdvd/mailman/">the project mailing
 445 list</a>. :)</p>
 446 </div>
 447       <div class="tags">
 448
 449
 450         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/lsdvd">lsdvd</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>.
 451
 452
 453       </div>
 454     </div>
 455     <div class="padding"></div>
 456
 457     <div class="entry">
 458       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Hva_henger_under_skibrua_over_E16_p__Sollih_gda_.html">Hva henger under skibrua over E16 på Sollihøgda?</a></div>
 459       <div class="date">21st September 2014</div>
 460       <div class="body"><p>Rundt omkring i Oslo og Østlandsområdet henger det bokser over
 461 veiene som jeg har lurt på hva gjør.  De har ut fra plassering og
 462 vinkling sett ut som bokser som sniffer ut et eller annet fra
 463 forbipasserende trafikk, men det har vært uklart for meg hva det er de
 464 leser av.  Her om dagen tok jeg bilde av en slik boks som henger under
 465 <a href="http://www.openstreetmap.no/?zoom=19&mlat=59.96396&mlon=10.34443&layers=B00000">ei
 466 skibru på Sollihøgda</a>:</p>
 467
 468 <p align="center"><img width="60%" src="http://people.skolelinux.org/pere/blog/images/2014-09-13-kapsch-sollihogda-crop.jpeg"></p>
 469
 470 <p>Boksen er tydelig merket «Kapsch >>>», logoen til
 471 <a href="http://www.kapsch.net/">det sveitsiske selskapet Kapsch</a> som
 472 blant annet lager sensorsystemer for veitrafikk.  Men de lager mye
 473 forskjellig, og jeg kjente ikke igjen boksen på utseendet etter en
 474 kjapp titt på produktlista til selskapet.</p>
 475
 476 <p>I og med at boksen henger over veien E16, en riksvei vedlikeholdt
 477 av Statens Vegvesen, så antok jeg at det burde være mulig å bruke
 478 REST-API-et som gir tilgang til vegvesenets database over veier,
 479 skilter og annet veirelatert til å finne ut hva i alle dager dette
 480 kunne være.  De har både
 481 <a href="https://www.vegvesen.no/nvdb/api/dokumentasjon/datakatalog">en
 482 datakatalog</a> og
 483 <a href="https://www.vegvesen.no/nvdb/api/dokumentasjon/sok">et
 484 søk</a>, der en kan søke etter ulike typer oppføringer innen for et
 485 gitt geografisk område.  Jeg laget et enkelt shell-script for å hente
 486 ut antall av en gitt type innenfor området skibrua dekker, og listet
 487 opp navnet på typene som ble funnet.  Orket ikke slå opp hvordan
 488 URL-koding av aktuelle strenger kunne gjøres mer generisk, og brukte
 489 en stygg sed-linje i stedet.</p>
 490
 491 <blockquote><pre>
 492 #!/bin/sh
 493 urlmap() {
 494     sed \
 495     -e 's/  / /g'   -e 's/{/%7B/g'  \
 496     -e 's/}/%7D/g'  -e 's/\[/%5B/g' \
 497     -e 's/\]/%5D/g' -e 's/ /%20/g'  \
 498     -e 's/,/%2C/g'  -e 's/\"/%22/g' \
 499     -e 's/:/%3A/g'
 500 }
 501
 502 lookup() {
 503     url="$1"
 504     curl -s -H 'Accept: application/vnd.vegvesen.nvdb-v1+xml' \
 505        "https://www.vegvesen.no/nvdb/api$url" | xmllint --format -
 506 }
 507
 508 for id in $(seq 1 874) ; do
 509     search="{
 510   lokasjon: {
 511     bbox: \"10.34425,59.96386,10.34458,59.96409\",
 512     srid: \"WGS84\"
 513   },
 514    objektTyper: [{
 515      id: $id, antall: 10
 516    }]
 517 }"
 518
 519     query=/sok?kriterie=$(echo $search | urlmap)
 520     if lookup "$query" |
 521     grep -q '&lt;totaltAntallReturnert>0&lt;'
 522     then
 523     :
 524     else
 525     echo $id
 526     lookup "/datakatalog/objekttyper/$id" |grep '^  &lt;navn>'
 527     fi
 528 done
 529
 530 exit 0
 531 </pre></blockquote>
 532
 533 Aktuelt ID-område 1-874 var riktig i datakatalogen da jeg laget
 534 scriptet.  Det vil endre seg over tid.  Skriptet listet så opp
 535 aktuelle typer i og rundt skibrua:
 536
 537 <blockquote><pre>
 538 5
 539   &lt;navn>Rekkverk&lt;/navn>
 540 14
 541   &lt;navn>Rekkverksende&lt;/navn>
 542 47
 543   &lt;navn>Trafikklomme&lt;/navn>
 544 49
 545   &lt;navn>Trafikkøy&lt;/navn>
 546 60
 547   &lt;navn>Bru&lt;/navn>
 548 79
 549   &lt;navn>Stikkrenne/Kulvert&lt;/navn>
 550 80
 551   &lt;navn>Grøft, åpen&lt;/navn>
 552 86
 553   &lt;navn>Belysningsstrekning&lt;/navn>
 554 95
 555   &lt;navn>Skiltpunkt&lt;/navn>
 556 96
 557   &lt;navn>Skiltplate&lt;/navn>
 558 98
 559   &lt;navn>Referansestolpe&lt;/navn>
 560 99
 561   &lt;navn>Vegoppmerking, langsgående&lt;/navn>
 562 105
 563   &lt;navn>Fartsgrense&lt;/navn>
 564 106
 565   &lt;navn>Vinterdriftsstrategi&lt;/navn>
 566 172
 567   &lt;navn>Trafikkdeler&lt;/navn>
 568 241
 569   &lt;navn>Vegdekke&lt;/navn>
 570 293
 571   &lt;navn>Breddemåling&lt;/navn>
 572 301
 573   &lt;navn>Kantklippareal&lt;/navn>
 574 318
 575   &lt;navn>Snø-/isrydding&lt;/navn>
 576 445
 577   &lt;navn>Skred&lt;/navn>
 578 446
 579   &lt;navn>Dokumentasjon&lt;/navn>
 580 452
 581   &lt;navn>Undergang&lt;/navn>
 582 528
 583   &lt;navn>Tverrprofil&lt;/navn>
 584 532
 585   &lt;navn>Vegreferanse&lt;/navn>
 586 534
 587   &lt;navn>Region&lt;/navn>
 588 535
 589   &lt;navn>Fylke&lt;/navn>
 590 536
 591   &lt;navn>Kommune&lt;/navn>
 592 538
 593   &lt;navn>Gate&lt;/navn>
 594 539
 595   &lt;navn>Transportlenke&lt;/navn>
 596 540
 597   &lt;navn>Trafikkmengde&lt;/navn>
 598 570
 599   &lt;navn>Trafikkulykke&lt;/navn>
 600 571
 601   &lt;navn>Ulykkesinvolvert enhet&lt;/navn>
 602 572
 603   &lt;navn>Ulykkesinvolvert person&lt;/navn>
 604 579
 605   &lt;navn>Politidistrikt&lt;/navn>
 606 583
 607   &lt;navn>Vegbredde&lt;/navn>
 608 591
 609   &lt;navn>Høydebegrensning&lt;/navn>
 610 592
 611   &lt;navn>Nedbøyningsmåling&lt;/navn>
 612 597
 613   &lt;navn>Støy-luft, Strekningsdata&lt;/navn>
 614 601
 615   &lt;navn>Oppgravingsdata&lt;/navn>
 616 602
 617   &lt;navn>Oppgravingslag&lt;/navn>
 618 603
 619   &lt;navn>PMS-parsell&lt;/navn>
 620 604
 621   &lt;navn>Vegnormalstrekning&lt;/navn>
 622 605
 623   &lt;navn>Værrelatert strekning&lt;/navn>
 624 616
 625   &lt;navn>Feltstrekning&lt;/navn>
 626 617
 627   &lt;navn>Adressepunkt&lt;/navn>
 628 626
 629   &lt;navn>Friksjonsmåleserie&lt;/navn>
 630 629
 631   &lt;navn>Vegdekke, flatelapping&lt;/navn>
 632 639
 633   &lt;navn>Kurvatur, horisontalelement&lt;/navn>
 634 640
 635   &lt;navn>Kurvatur, vertikalelement&lt;/navn>
 636 642
 637   &lt;navn>Kurvatur, vertikalpunkt&lt;/navn>
 638 643
 639   &lt;navn>Statistikk, trafikkmengde&lt;/navn>
 640 647
 641   &lt;navn>Statistikk, vegbredde&lt;/navn>
 642 774
 643   &lt;navn>Nedbøyningsmåleserie&lt;/navn>
 644 775
 645   &lt;navn>ATK, influensstrekning&lt;/navn>
 646 794
 647   &lt;navn>Systemobjekt&lt;/navn>
 648 810
 649   &lt;navn>Vinterdriftsklasse&lt;/navn>
 650 821
 651   &lt;navn>Funksjonell vegklasse&lt;/navn>
 652 825
 653   &lt;navn>Kurvatur, stigning&lt;/navn>
 654 838
 655   &lt;navn>Vegbredde, beregnet&lt;/navn>
 656 862
 657   &lt;navn>Reisetidsregistreringspunkt&lt;/navn>
 658 871
 659   &lt;navn>Bruksklasse&lt;/navn>
 660 </pre></blockquote>
 661
 662 <p>Av disse ser ID 775 og 862 mest relevant ut.  ID 775 antar jeg
 663 refererer til fotoboksen som står like ved brua, mens
 664 «Reisetidsregistreringspunkt» kanskje kan være boksen som henger der.
 665 Hvordan finner jeg så ut hva dette kan være for noe.  En titt på
 666 <a href="http://labs.vegdata.no/nvdb-datakatalog/862-Reisetidsregistreringspunkt/">datakatalogsiden
 667 for ID 862/Reisetidsregistreringspunkt</a> viser at det er finnes 53
 668 slike målere i Norge, og hvor de er plassert, men gir ellers få
 669 detaljer.  Det er plassert 40 på østlandet og 13 i Trondheimsregionen.
 670 Men siden nevner «AutoPASS», og hvis en slår opp oppføringen på
 671 Sollihøgda nevner den «Ciber AS» som ID for eksternt system.  (Kan det
 672 være snakk om
 673 <a href="http://www.proff.no/selskap/ciber-norge-as/oslo/internettdesign-og-programmering/Z0I3KMF4/">Ciber
 674 Norge AS</a>, et selskap eid av Ciber Europe Bv?)  Et nettsøk på
 675  «Ciber AS autopass» fører meg til en artikkel fra NRK Trøndelag i
 676  2013 med tittel
 677 «<a href="http://www.nrk.no/trondelag/sjekk-dette-hvis-du-vil-unnga-ko-1.11327947">Sjekk
 678 dette hvis du vil unngå kø</a>».  Artikkelen henviser til vegvesenets
 679 nettside
 680 <a href="http://www.reisetider.no/reisetid/forside.html">reisetider.no</a>
 681 som har en
 682 <a href="http://www.reisetider.no/reisetid/omrade.html?omrade=5">kartside
 683 for Østlandet</a> som viser at det måles mellom Sandvika og Sollihøgda.
 684 Det kan dermed se ut til at jeg har funnet ut hva boksene gjør.</p>
 685
 686 <p>Hvis det stemmer, så er dette bokser som leser av AutoPASS-ID-en
 687 til alle passerende biler med AutoPASS-brikke, og dermed gjør det mulig
 688 for de som kontrollerer boksene å holde rede på hvor en gitt bil er
 689 når den passerte et slikt målepunkt.  NRK-artikkelen forteller at
 690 denne informasjonen i dag kun brukes til å koble to
 691 AutoPASS-brikkepasseringer passeringer sammen for å beregne
 692 reisetiden, og at bruken er godkjent av Datatilsynet.  Det er desverre
 693 ikke mulig for en sjåfør som passerer under en slik boks å kontrollere
 694 at AutoPASS-ID-en kun brukes til dette i dag og i fremtiden.</p>
 695
 696 <p>I tillegg til denne type AutoPASS-sniffere vet jeg at det også
 697 finnes mange automatiske stasjoner som tar betalt pr. passering (aka
 698 bomstasjoner), og der lagres informasjon om tid, sted og bilnummer i
 699 10 år.  Finnes det andre slike sniffere plassert ut på veiene?</p>
 700
 701 <p>Personlig har jeg valgt å ikke bruke AutoPASS-brikke, for å gjøre
 702 det vanskeligere og mer kostbart for de som vil invadere privatsfæren
 703 og holde rede på hvor bilen min beveger seg til enhver tid.  Jeg håper
 704 flere vil gjøre det samme, selv om det gir litt høyere private
 705 utgifter (dyrere bompassering).  Vern om privatsfæren koster i disse
 706 dager.</p>
 707
 708 <p>Takk til Jan Kristian Jensen i Statens Vegvesen for tips om
 709 dokumentasjon på vegvesenets REST-API.</p>
 710 </div>
 711       <div class="tags">
 712
 713
 714         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/kart">kart</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
 715
 716
 717       </div>
 718     </div>
 719     <div class="padding"></div>
 720
 721     <div class="entry">
 722       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Speeding_up_the_Debian_installer_using_eatmydata_and_dpkg_divert.html">Speeding up the Debian installer using eatmydata and dpkg-divert</a></div>
 723       <div class="date">16th September 2014</div>
 724       <div class="body"><p>The <a href="https://www.debian.org/">Debian</a> installer could be
 725 a lot quicker.  When we install more than 2000 packages in
 726 <a href="http://www.skolelinux.org/">Skolelinux / Debian Edu</a> using
 727 tasksel in the installer, unpacking the binary packages take forever.
 728 A part of the slow I/O issue was discussed in
 729 <a href="https://bugs.debian.org/613428">bug #613428</a> about too
 730 much file system sync-ing done by dpkg, which is the package
 731 responsible for unpacking the binary packages.  Other parts (like code
 732 executed by postinst scripts) might also sync to disk during
 733 installation.  All this sync-ing to disk do not really make sense to
 734 me.  If the machine crash half-way through, I start over, I do not try
 735 to salvage the half installed system.  So the failure sync-ing is
 736 supposed to protect against, hardware or system crash, is not really
 737 relevant while the installer is running.</p>
 738
 739 <p>A few days ago, I thought of a way to get rid of all the file
 740 system sync()-ing in a fairly non-intrusive way, without the need to
 741 change the code in several packages.  The idea is not new, but I have
 742 not heard anyone propose the approach using dpkg-divert before.  It
 743 depend on the small and clever package
 744 <a href="https://packages.qa.debian.org/eatmydata">eatmydata</a>, which
 745 uses LD_PRELOAD to replace the system functions for syncing data to
 746 disk with functions doing nothing, thus allowing programs to live
 747 dangerous while speeding up disk I/O significantly.  Instead of
 748 modifying the implementation of dpkg, apt and tasksel (which are the
 749 packages responsible for selecting, fetching and installing packages),
 750 it occurred to me that we could just divert the programs away, replace
 751 them with a simple shell wrapper calling
 752 "eatmydata&nbsp;$program&nbsp;$@", to get the same effect.
 753 Two days ago I decided to test the idea, and wrapped up a simple
 754 implementation for the Debian Edu udeb.</p>
 755
 756 <p>The effect was stunning.  In my first test it reduced the running
 757 time of the pkgsel step (installing tasks) from 64 to less than 44
 758 minutes (20 minutes shaved off the installation) on an old Dell
 759 Latitude D505 machine.  I am not quite sure what the optimised time
 760 would have been, as I messed up the testing a bit, causing the debconf
 761 priority to get low enough for two questions to pop up during
 762 installation.  As soon as I saw the questions I moved the installation
 763 along, but do not know how long the question were holding up the
 764 installation.  I did some more measurements using Debian Edu Jessie,
 765 and got these results.  The time measured is the time stamp in
 766 /var/log/syslog between the "pkgsel: starting tasksel" and the
 767 "pkgsel: finishing up" lines, if you want to do the same measurement
 768 yourself.  In Debian Edu, the tasksel dialog do not show up, and the
 769 timing thus do not depend on how quickly the user handle the tasksel
 770 dialog.</p>
 771
 772 <p><table>
 773
 774 <tr>
 775 <th>Machine/setup</th>
 776 <th>Original tasksel</th>
 777 <th>Optimised tasksel</th>
 778 <th>Reduction</th>
 779 </tr>
 780
 781 <tr>
 782 <td>Latitude D505 Main+LTSP LXDE</td>
 783 <td>64 min (07:46-08:50)</td>
 784 <td><44 min (11:27-12:11)</td>
 785 <td>>20 min 18%</td>
 786 </tr>
 787
 788 <tr>
 789 <td>Latitude D505 Roaming LXDE</td>
 790 <td>57 min (08:48-09:45)</td>
 791 <td>34 min (07:43-08:17)</td>
 792 <td>23 min 40%</td>
 793 </tr>
 794
 795 <tr>
 796 <td>Latitude D505 Minimal</td>
 797 <td>22 min (10:37-10:59)</td>
 798 <td>11 min (11:16-11:27)</td>
 799 <td>11 min 50%</td>
 800 </tr>
 801
 802 <tr>
 803 <td>Thinkpad X200 Minimal</td>
 804 <td>6 min (08:19-08:25)</td>
 805 <td>4 min (08:04-08:08)</td>
 806 <td>2 min 33%</td>
 807 </tr>
 808
 809 <tr>
 810 <td>Thinkpad X200 Roaming KDE</td>
 811 <td>19 min (09:21-09:40)</td>
 812 <td>15 min (10:25-10:40)</td>
 813 <td>4 min 21%</td>
 814 </tr>
 815
 816 </table></p>
 817
 818 <p>The test is done using a netinst ISO on a USB stick, so some of the
 819 time is spent downloading packages.  The connection to the Internet
 820 was 100Mbit/s during testing, so downloading should not be a
 821 significant factor in the measurement.  Download typically took a few
 822 seconds to a few minutes, depending on the amount of packages being
 823 installed.</p>
 824
 825 <p>The speedup is implemented by using two hooks in
 826 <a href="https://www.debian.org/devel/debian-installer/">Debian
 827 Installer</a>, the pre-pkgsel.d hook to set up the diverts, and the
 828 finish-install.d hook to remove the divert at the end of the
 829 installation.  I picked the pre-pkgsel.d hook instead of the
 830 post-base-installer.d hook because I test using an ISO without the
 831 eatmydata package included, and the post-base-installer.d hook in
 832 Debian Edu can only operate on packages included in the ISO.  The
 833 negative effect of this is that I am unable to activate this
 834 optimization for the kernel installation step in d-i.  If the code is
 835 moved to the post-base-installer.d hook, the speedup would be larger
 836 for the entire installation.</p>
 837
 838 <p>I've implemented this in the
 839 <a href="https://packages.qa.debian.org/debian-edu-install">debian-edu-install</a>
 840 git repository, and plan to provide the optimization as part of the
 841 Debian Edu installation.  If you want to test this yourself, you can
 842 create two files in the installer (or in an udeb).  One shell script
 843 need do go into /usr/lib/pre-pkgsel.d/, with content like this:</p>
 844
 845 <p><blockquote><pre>
 846 #!/bin/sh
 847 set -e
 848 . /usr/share/debconf/confmodule
 849 info() {
 850     logger -t my-pkgsel "info: $*"
 851 }
 852 error() {
 853     logger -t my-pkgsel "error: $*"
 854 }
 855 override_install() {
 856     apt-install eatmydata || true
 857     if [ -x /target/usr/bin/eatmydata ] ; then
 858         for bin in dpkg apt-get aptitude tasksel ; do
 859             file=/usr/bin/$bin
 860             # Test that the file exist and have not been diverted already.
 861             if [ -f /target$file ] ; then
 862                 info "diverting $file using eatmydata"
 863                 printf "#!/bin/sh\neatmydata $bin.distrib \"\$@\"\n" \
 864                     > /target$file.edu
 865                 chmod 755 /target$file.edu
 866                 in-target dpkg-divert --package debian-edu-config \
 867                     --rename --quiet --add $file
 868                 ln -sf ./$bin.edu /target$file
 869             else
 870                 error "unable to divert $file, as it is missing."
 871             fi
 872         done
 873     else
 874         error "unable to find /usr/bin/eatmydata after installing the eatmydata pacage"
 875     fi
 876 }
 877
 878 override_install
 879 </pre></blockquote></p>
 880
 881 <p>To clean up, another shell script should go into
 882 /usr/lib/finish-install.d/ with code like this:
 883
 884 <p><blockquote><pre>
 885 #! /bin/sh -e
 886 . /usr/share/debconf/confmodule
 887 error() {
 888     logger -t my-finish-install "error: $@"
 889 }
 890 remove_install_override() {
 891     for bin in dpkg apt-get aptitude tasksel ; do
 892         file=/usr/bin/$bin
 893         if [ -x /target$file.edu ] ; then
 894             rm /target$file
 895             in-target dpkg-divert --package debian-edu-config \
 896                 --rename --quiet --remove $file
 897             rm /target$file.edu
 898         else
 899             error "Missing divert for $file."
 900         fi
 901     done
 902     sync # Flush file buffers before continuing
 903 }
 904
 905 remove_install_override
 906 </pre></blockquote></p>
 907
 908 <p>In Debian Edu, I placed both code fragments in a separate script
 909 edu-eatmydata-install and call it from the pre-pkgsel.d and
 910 finish-install.d scripts.</p>
 911
 912 <p>By now you might ask if this change should get into the normal
 913 Debian installer too?  I suspect it should, but am not sure the
 914 current debian-installer coordinators find it useful enough.  It also
 915 depend on the side effects of the change.  I'm not aware of any, but I
 916 guess we will see if the change is safe after some more testing.
 917 Perhaps there is some package in Debian depending on sync() and
 918 fsync() having effect?  Perhaps it should go into its own udeb, to
 919 allow those of us wanting to enable it to do so without affecting
 920 everyone.</p>
 921
 922 <p>Update 2014-09-24: Since a few days ago, enabling this optimization
 923 will break installation of all programs using gnutls because of
 924 <a href="https://bugs.debian.org/702711">bug #702711</a>.  An updated
 925 eatmydata package in Debian will solve it.</p>
 926
 927 <p>Update 2014-10-17: The bug mentioned above is fixed in testing and
 928 the optimization work again.  And I have discovered that the
 929 dpkg-divert trick is not really needed and implemented a slightly
 930 simpler approach as part of the debian-edu-install package.  See
 931 tools/edu-eatmydata-install in the source package.</p>
 932 </div>
 933       <div class="tags">
 934
 935
 936         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>.
 937
 938
 939       </div>
 940     </div>
 941     <div class="padding"></div>
 942
 943     <div class="entry">
 944       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Good_bye_subkeys_pgp_net__welcome_pool_sks_keyservers_net.html">Good bye subkeys.pgp.net, welcome pool.sks-keyservers.net</a></div>
 945       <div class="date">10th September 2014</div>
 946       <div class="body"><p>Yesterday, I had the pleasure of attending a talk with the
 947 <a href="http://www.nuug.no/">Norwegian Unix User Group</a> about
 948 <a href="http://www.nuug.no/aktiviteter/20140909-sks-keyservers/">the
 949 OpenPGP keyserver pool sks-keyservers.net</a>, and was very happy to
 950 learn that there is a large set of publicly available key servers to
 951 use when looking for peoples public key.  So far I have used
 952 subkeys.pgp.net, and some times wwwkeys.nl.pgp.net when the former
 953 were misbehaving, but those days are ended.  The servers I have used
 954 up until yesterday have been slow and some times unavailable.  I hope
 955 those problems are gone now.</p>
 956
 957 <p>Behind the round robin DNS entry of the
 958 <a href="https://sks-keyservers.net/">sks-keyservers.net</a> service
 959 there is a pool of more than 100 keyservers which are checked every
 960 day to ensure they are well connected and up to date.  It must be
 961 better than what I have used so far. :)</p>
 962
 963 <p>Yesterdays speaker told me that the service is the default
 964 keyserver provided by the default configuration in GnuPG, but this do
 965 not seem to be used in Debian.  Perhaps it should?</p>
 966
 967 <p>Anyway, I've updated my ~/.gnupg/options file to now include this
 968 line:</p>
 969
 970 <p><blockquote><pre>
 971 keyserver pool.sks-keyservers.net
 972 </pre></blockquote></p>
 973
 974 <p>With GnuPG version 2 one can also locate the keyserver using SRV
 975 entries in DNS.  Just for fun, I did just that at work, so now every
 976 user of GnuPG at the University of Oslo should find a OpenGPG
 977 keyserver automatically should their need it:</p>
 978
 979 <p><blockquote><pre>
 980 % host -t srv _pgpkey-http._tcp.uio.no
 981 _pgpkey-http._tcp.uio.no has SRV record 0 100 11371 pool.sks-keyservers.net.
 982 %
 983 </pre></blockquote></p>
 984
 985 <p>Now if only
 986 <a href="http://ietfreport.isoc.org/idref/draft-shaw-openpgp-hkp/">the
 987 HKP lookup protocol</a> supported finding signature paths, I would be
 988 very happy.  It can look up a given key or search for a user ID, but I
 989 normally do not want that, but to find a trust path from my key to
 990 another key.  Given a user ID or key ID, I would like to find (and
 991 download) the keys representing a signature path from my key to the
 992 key in question, to be able to get a trust path between the two keys.
 993 This is as far as I can tell not possible today.  Perhaps something
 994 for a future version of the protocol?</p>
 995 </div>
 996       <div class="tags">
 997
 998
 999         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
1000
1001
1002       </div>
1003     </div>
1004     <div class="padding"></div>
1005
1006     <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>
1007     <div id="sidebar">
1008
1009
1010
1011 <h2>Archive</h2>
1012 <ul>
1013
1014 <li>2014
1015 <ul>
1016
1017 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
1018
1019 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
1020
1021 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
1022
1023 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
1024
1025 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
1026
1027 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
1028
1029 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
1030
1031 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
1032
1033 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
1034
1035 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (5)</a></li>
1036
1037 </ul></li>
1038
1039 <li>2013
1040 <ul>
1041
1042 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
1043
1044 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
1045
1046 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
1047
1048 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
1049
1050 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
1051
1052 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
1053
1054 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
1055
1056 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
1057
1058 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
1059
1060 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
1061
1062 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
1063
1064 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
1065
1066 </ul></li>
1067
1068 <li>2012
1069 <ul>
1070
1071 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
1072
1073 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
1074
1075 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
1076
1077 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
1078
1079 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
1080
1081 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
1082
1083 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
1084
1085 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
1086
1087 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
1088
1089 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
1090
1091 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
1092
1093 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
1094
1095 </ul></li>
1096
1097 <li>2011
1098 <ul>
1099
1100 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
1101
1102 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
1103
1104 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
1105
1106 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
1107
1108 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
1109
1110 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
1111
1112 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
1113
1114 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
1115
1116 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
1117
1118 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
1119
1120 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
1121
1122 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
1123
1124 </ul></li>
1125
1126 <li>2010
1127 <ul>
1128
1129 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1130
1131 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1132
1133 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1134
1135 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1136
1137 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1138
1139 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1140
1141 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1142
1143 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1144
1145 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1146
1147 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1148
1149 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1150
1151 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1152
1153 </ul></li>
1154
1155 <li>2009
1156 <ul>
1157
1158 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1159
1160 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1161
1162 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1163
1164 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1165
1166 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1167
1168 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1169
1170 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1171
1172 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1173
1174 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1175
1176 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1177
1178 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1179
1180 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1181
1182 </ul></li>
1183
1184 <li>2008
1185 <ul>
1186
1187 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1188
1189 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1190
1191 </ul></li>
1192
1193 </ul>
1194
1195
1196
1197 <h2>Tags</h2>
1198 <ul>
1199
1200  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
1201
1202  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1203
1204  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1205
1206  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1207
1208  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (8)</a></li>
1209
1210  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (14)</a></li>
1211
1212  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1213
1214  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1215
1216  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (107)</a></li>
1217
1218  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (150)</a></li>
1219
1220  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1221
1222  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (15)</a></li>
1223
1224  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (12)</a></li>
1225
1226  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1227
1228  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (260)</a></li>
1229
1230  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (21)</a></li>
1231
1232  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
1233
1234  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (13)</a></li>
1235
1236  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (8)</a></li>
1237
1238  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (11)</a></li>
1239
1240  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (41)</a></li>
1241
1242  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (10)</a></li>
1243
1244  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (19)</a></li>
1245
1246  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1247
1248  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1249
1250  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1251
1252  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1253
1254  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1255
1256  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (31)</a></li>
1257
1258  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (248)</a></li>
1259
1260  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (163)</a></li>
1261
1262  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (11)</a></li>
1263
1264  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1265
1266  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (48)</a></li>
1267
1268  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (75)</a></li>
1269
1270  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (1)</a></li>
1271
1272  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1273
1274  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1275
1276  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1277
1278  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (9)</a></li>
1279
1280  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1281
1282  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (4)</a></li>
1283
1284  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1285
1286  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (41)</a></li>
1287
1288  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1289
1290  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (4)</a></li>
1291
1292  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (45)</a></li>
1293
1294  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (3)</a></li>
1295
1296  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (9)</a></li>
1297
1298  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (26)</a></li>
1299
1300  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (2)</a></li>
1301
1302  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (8)</a></li>
1303
1304  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (44)</a></li>
1305
1306  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1307
1308  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (33)</a></li>
1309
1310 </ul>
1311
1312
1313     </div>
1314     <p style="text-align: right">
1315  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1316 </p>
1317
1318   </body>
1319 </html>