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  14  <h1>
  15      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <h3>Entries from October 2018.</h3>
  23
  24     <div class="entry">
  25       <div class="title">
  26         <a href="http://people.skolelinux.org/pere/blog/Measuring_the_speaker_frequency_response_using_the_AUDMES_free_software_GUI___nice_free_software.html">Measuring the speaker frequency response using the AUDMES free software GUI - nice free software</a>
  27       </div>
  28       <div class="date">
  29         22nd October 2018
  30       </div>
  31       <div class="body">
  32         <p><img src="http://people.skolelinux.org/pere/blog/images/2018-10-22-audmes-measure-speakers.png" align="right" width="40%"/></p>
  33
  34 <p>My current home stereo is a patchwork of various pieces I got on
  35 flee markeds over the years.  It is amazing what kind of equipment
  36 show up there.  I've been wondering for a while if it was possible to
  37 measure how well this equipment is working together, and decided to
  38 see how far I could get using free software.  After trawling the web I
  39 came across an article from DIY Audio and Video on
  40 <a href="https://www.diyaudioandvideo.com/Tutorial/SpeakerResponseTesting/">Speaker
  41 Testing and Analysis</a> describing how to test speakers, and it listing
  42 several software options, among them
  43 <a href="https://sourceforge.net/projects/audmes/">AUDio MEasurement
  44 System (AUDMES)</a>.  It is the only free software system I could find
  45 focusing on measuring speakers and audio frequency response.  In the
  46 process I also found an interesting article from NOVO on
  47 <a href="http://novo.press/understanding-speaker-specifications-and-frequency-response/">Understanding
  48 Speaker Specifications and Frequency Response</a> and an article from
  49 ecoustics on
  50 <a href="https://www.ecoustics.com/articles/understanding-speaker-frequency-response/">Understanding
  51 Speaker Frequency Response</a>, with a lot of information on what to
  52 look for and how to interpret the graphs.  Armed with this knowledge,
  53 I set out to measure the state of my speakers.</p>
  54
  55 <p>The first hurdle was that AUDMES hadn't seen a commit for 10 years
  56 and did not build with current compilers and libraries.  I got in
  57 touch with its author, who no longer was spending time on the program
  58 but gave me write access to the subversion repository on Sourceforge.
  59 The end result is that now the code build on Linux and is capable of
  60 saving and loading the collected frequency response data in CSV
  61 format.  The application is quite nice and flexible, and I was able to
  62 select the input and output audio interfaces independently.  This made
  63 it possible to use a USB mixer as the input source, while sending
  64 output via my laptop headphone connection.  I lacked the hardware and
  65 cabling to figure out a different way to get independent cabling to
  66 speakers and microphone.</p>
  67
  68 <p>Using this setup I could see how a large range of high frequencies
  69 apparently were not making it out of my speakers.  The picture show
  70 the frequency response measurement of one of the speakers.  Note the
  71 frequency lines seem to be slightly misaligned, compared to the CSV
  72 output from the program.  I can not hear several of these are high
  73 frequencies, according to measurement from
  74 <a href="http://freehearingtestsoftware.com">Free Hearing Test
  75 Software</a>, an freeware system to measure your hearing (still
  76 looking for a free software alternative), so I do not know if they are
  77 coming out out the speakers.  I thus do not quite know how to figure
  78 out if the missing frequencies is a problem with the microphone, the
  79 amplifier or the speakers, but I managed to rule out the audio card in my
  80 PC by measuring my Bose noise canceling headset using its own
  81 microphone.  This setup was able to see the high frequency tones, so
  82 the problem with my stereo had to be in the amplifier or speakers.</p>
  83
  84 <p>Anyway, to try to role out one factor I ended up picking up a new
  85 set of speakers at a flee marked, and these work a lot better than the
  86 old speakers, so I guess the microphone and amplifier is OK.  If you
  87 need to measure your own speakers, check out AUDMES.  If more people
  88 get involved, perhaps the project could become good enough to
  89 <a href="https://bugs.debian.org/910876">include in Debian</a>?  And if
  90 you know of some other free software to measure speakers and amplifier
  91 performance, please let me know.  I am aware of the freeware option
  92 <a href="https://www.roomeqwizard.com/">REW</a>, but I want something
  93 that can be developed also when the vendor looses interest.</p>
  94
  95 <p>As usual, if you use Bitcoin and want to show your support of my
  96 activities, please send Bitcoin donations to my address
  97 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  98
  99       </div>
 100       <div class="tags">
 101
 102
 103         Tags: <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>.
 104
 105
 106       </div>
 107     </div>
 108     <div class="padding"></div>
 109
 110     <div class="entry">
 111       <div class="title">
 112         <a href="http://people.skolelinux.org/pere/blog/Web_browser_integration_of_VLC_with_Bittorrent_support.html">Web browser integration of VLC with Bittorrent support</a>
 113       </div>
 114       <div class="date">
 115         21st October 2018
 116       </div>
 117       <div class="body">
 118         <p>Bittorrent is as far as I know, currently the most efficient way to
 119 distribute content on the Internet.  It is used all by all sorts of
 120 content providers, from national TV stations like
 121 <a href="https://www.nrk.no/">NRK</a>, Linux distributors like
 122 <a href="https://www.debian.org/">Debian</a> and
 123 <a href="https://www.ubuntu.com/">Ubuntu</a>, and of course the
 124 <a href="https://archive.org/">Internet archive</A>.
 125
 126 <p>Almost a month ago
 127 <a href="https://tracker.debian.org/pkg/vlc-plugin-bittorrent">a new
 128 package adding Bittorrent support to VLC</a> became available in
 129 Debian testing and unstable.  To test it, simply install it like
 130 this:</p>
 131
 132 <p><pre>
 133 apt install vlc-plugin-bittorrent
 134 </pre></p>
 135
 136 <p>Since the plugin was made available for the first time in Debian,
 137 several improvements have been made to it.  In version 2.2-4, now
 138 available in both testing and unstable, a desktop file is provided to
 139 teach browsers to start VLC when the user click on torrent files or
 140 magnet links.  The last part is thanks to me finally understanding
 141 what the strange x-scheme-handler style MIME types in desktop files
 142 are used for.  By adding x-scheme-handler/magnet to the MimeType entry
 143 in the desktop file, at least the browsers Firefox and Chromium will
 144 suggest to start VLC when selecting a magnet URI on a web page.  The
 145 end result is that now, with the plugin installed in Buster and Sid,
 146 one can visit any
 147 <a href="https://archive.org/details/CopyingIsNotTheft1080p">Internet
 148 Archive page with movies</a> using a web browser and click on the
 149 torrent link to start streaming the movie.</p>
 150
 151 <p>Note, there is still some misfeatures in the plugin.  One is the
 152 fact that it will hang and
 153 <a href="https://github.com/johang/vlc-bittorrent/issues/13">block VLC
 154 from exiting until the torrent streaming starts</a>.  Another is the
 155 fact that it
 156 <a href="https://github.com/johang/vlc-bittorrent/issues/9">will pick
 157 and play a random file in a multi file torrent</a>.  This is not
 158 always the video file you want.  Combined with the first it can be a
 159 bit hard to get the video streaming going.  But when it work, it seem
 160 to do a good job.</p>
 161
 162 <p>For the Debian packaging, I would love to find a good way to test
 163 if the plugin work with VLC using autopkgtest.  I tried, but do not
 164 know enough of the inner workings of VLC to get it working.  For now
 165 the autopkgtest script is only checking if the .so file was
 166 successfully loaded by VLC.  If you have any suggestions, please
 167 submit a patch to the Debian bug tracking system.</p>
 168
 169 <p>As usual, if you use Bitcoin and want to show your support of my
 170 activities, please send Bitcoin donations to my address
 171 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 172
 173       </div>
 174       <div class="tags">
 175
 176
 177         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 178
 179
 180       </div>
 181     </div>
 182     <div class="padding"></div>
 183
 184     <div class="entry">
 185       <div class="title">
 186         <a href="http://people.skolelinux.org/pere/blog/Release_0_2_of_free_software_archive_system_Nikita_announced.html">Release 0.2 of free software archive system Nikita announced</a>
 187       </div>
 188       <div class="date">
 189         18th October 2018
 190       </div>
 191       <div class="body">
 192         <p>This morning, the new release of the
 193 <a href="https://gitlab.com/OsloMet-ABI/nikita-noark5-core/">Nikita
 194 Noark 5 core project</a> was
 195 <a href="https://lists.nuug.no/pipermail/nikita-noark/2018-October/000406.html">announced
 196 on the project mailing list</a>.  The free software solution is an
 197 implementation of the Norwegian archive standard Noark 5 used by
 198 government offices in Norway.  These were the changes in version 0.2
 199 since version 0.1.1 (from NEWS.md):
 200
 201 <ul>
 202   <li>Fix typos in REL names</li>
 203   <li>Tidy up error message reporting</li>
 204   <li>Fix issue where we used Integer.valueOf(), not Integer.getInteger()</li>
 205   <li>Change some String handling to StringBuffer</li>
 206   <li>Fix error reporting</li>
 207   <li>Code tidy-up</li>
 208   <li>Fix issue using static non-synchronized SimpleDateFormat to avoid
 209       race conditions</li>
 210   <li>Fix problem where deserialisers were treating integers as strings</li>
 211   <li>Update methods to make them null-safe</li>
 212   <li>Fix many issues reported by coverity</li>
 213   <li>Improve equals(), compareTo() and hash() in domain model</li>
 214   <li>Improvements to the domain model for metadata classes</li>
 215   <li>Fix CORS issues when downloading document</li>
 216   <li>Implementation of case-handling with registryEntry and document upload</li>
 217   <li>Better support in Javascript for OPTIONS</li>
 218   <li>Adding concept description of mail integration</li>
 219   <li>Improve setting of default values for GET on ny-journalpost</li>
 220   <li>Better handling of required values during deserialisation </li>
 221   <li>Changed tilknyttetDato (M620) from date to dateTime</li>
 222   <li>Corrected some opprettetDato (M600) (de)serialisation errors.</li>
 223   <li>Improve parse error reporting.</li>
 224   <li>Started on OData search and filtering.</li>
 225   <li>Added Contributor Covenant Code of Conduct to project.</li>
 226   <li>Moved repository and project from Github to Gitlab.</li>
 227   <li>Restructured repository, moved code into src/ and web/.</li>
 228   <li>Updated code to use Spring Boot version 2.</li>
 229   <li>Added support for OAuth2 authentication.</li>
 230   <li>Fixed several bugs discovered by Coverity.</li>
 231   <li>Corrected handling of date/datetime fields.</li>
 232   <li>Improved error reporting when rejecting during deserializatoin.</li>
 233   <li>Adjusted default values provided for ny-arkivdel, ny-mappe,
 234    ny-saksmappe, ny-journalpost and ny-dokumentbeskrivelse.</li>
 235   <li>Several fixes for korrespondansepart*.</li>
 236   <li>Updated web GUI:
 237      <ul>
 238        <li>Now handle both file upload and download.</li>
 239        <li>Uses new OAuth2 authentication for login.</li>
 240        <li>Forms now fetches default values from API using GET.</li>
 241        <li>Added RFC 822 (email), TIFF and JPEG to list of possible file formats.</li>
 242      </ul></li>
 243 </ul>
 244
 245 <p>The changes and improvements are extensive.  Running diffstat on
 246 the changes between git tab 0.1.1 and 0.2 show 1098 files changed,
 247 108666 insertions(+), 54066 deletions(-).</p>
 248
 249 <p>If free and open standardized archiving API sound interesting to
 250 you, please contact us on IRC
 251 (<a href="irc://irc.freenode.net/%23nikita">#nikita on
 252 irc.freenode.net</a>) or email
 253 (<a href="https://lists.nuug.no/mailman/listinfo/nikita-noark">nikita-noark
 254 mailing list</a>).</p>
 255
 256 <p>As usual, if you use Bitcoin and want to show your support of my
 257 activities, please send Bitcoin donations to my address
 258 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 259
 260       </div>
 261       <div class="tags">
 262
 263
 264         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/noark5">noark5</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</a>.
 265
 266
 267       </div>
 268     </div>
 269     <div class="padding"></div>
 270
 271     <div class="entry">
 272       <div class="title">
 273         <a href="http://people.skolelinux.org/pere/blog/Fetching_trusted_timestamps_using_the_rfc3161ng_python_module.html">Fetching trusted timestamps using the rfc3161ng python module</a>
 274       </div>
 275       <div class="date">
 276          8th October 2018
 277       </div>
 278       <div class="body">
 279         <p>I have  earlier covered the basics of trusted timestamping using the
 280 'openssl ts' client.  See blog post for
 281 <a href="http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html">2014</a>,
 282 <a href="http://people.skolelinux.org/pere/blog/syslog_trusted_timestamp___chain_of_trusted_timestamps_for_your_syslog.html">2016</a>
 283 and
 284 <a href="http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html">2017</a>
 285 for those stories.  But some times I want to integrate the timestamping
 286 in other code, and recently I needed to integrate it into Python.
 287 After searching a bit, I found
 288 <a href="https://dev.entrouvert.org/projects/python-rfc3161">the
 289 rfc3161 library</a> which seemed like a good fit, but I soon
 290 discovered it only worked for python version 2, and I needed something
 291 that work with python version 3.  Luckily I next came across
 292 <a href="https://github.com/trbs/rfc3161ng/">the rfc3161ng library</a>,
 293 a fork of the original rfc3161 library.  Not only is it working with
 294 python 3, it have fixed a few of the bugs in the original library, and
 295 it has an active maintainer.  I decided to wrap it up and make it
 296 <a href="https://tracker.debian.org/pkg/python-rfc3161ng">available in
 297 Debian</a>, and a few days ago it entered Debian unstable and testing.</p>
 298
 299 <p>Using the library is fairly straight forward.  The only slightly
 300 problematic step is to fetch the required certificates to verify the
 301 timestamp.  For some services it is straight forward, while for others
 302 I have not yet figured out how to do it.  Here is a small standalone
 303 code example based on of the integration tests in the library code:</p>
 304
 305 <pre>
 306 #!/usr/bin/python3
 307
 308 """
 309
 310 Python 3 script demonstrating how to use the rfc3161ng module to
 311 get trusted timestamps.
 312
 313 The license of this code is the same as the license of the rfc3161ng
 314 library, ie MIT/BSD.
 315
 316 """
 317
 318 import os
 319 import pyasn1.codec.der
 320 import rfc3161ng
 321 import subprocess
 322 import tempfile
 323 import urllib.request
 324
 325 def store(f, data):
 326     f.write(data)
 327     f.flush()
 328     f.seek(0)
 329
 330 def fetch(url, f=None):
 331     response = urllib.request.urlopen(url)
 332     data = response.read()
 333     if f:
 334         store(f, data)
 335     return data
 336
 337 def main():
 338     with tempfile.NamedTemporaryFile() as cert_f,\
 339          tempfile.NamedTemporaryFile() as ca_f,\
 340          tempfile.NamedTemporaryFile() as msg_f,\
 341          tempfile.NamedTemporaryFile() as tsr_f:
 342
 343         # First fetch certificates used by service
 344         certificate_data = fetch('https://freetsa.org/files/tsa.crt', cert_f)
 345         ca_data_data = fetch('https://freetsa.org/files/cacert.pem', ca_f)
 346
 347         # Then timestamp the message
 348         timestamper = \
 349             rfc3161ng.RemoteTimestamper('http://freetsa.org/tsr',
 350                                         certificate=certificate_data)
 351         data = b"Python forever!\n"
 352         tsr = timestamper(data=data, return_tsr=True)
 353
 354         # Finally, convert message and response to something 'openssl ts' can verify
 355         store(msg_f, data)
 356         store(tsr_f, pyasn1.codec.der.encoder.encode(tsr))
 357         args = ["openssl", "ts", "-verify",
 358                 "-data", msg_f.name,
 359                 "-in", tsr_f.name,
 360                 "-CAfile", ca_f.name,
 361                 "-untrusted", cert_f.name]
 362         subprocess.check_call(args)
 363
 364 if '__main__' == __name__:
 365    main()
 366 </pre>
 367
 368 <p>The code fetches the required certificates, store them as temporary
 369 files, timestamp a simple message, store the message and timestamp to
 370 disk and ask 'openssl ts' to verify the timestamp.  A timestamp is
 371 around 1.5 kiB in size, and should be fairly easy to store for future
 372 use.</p>
 373
 374 <p>As usual, if you use Bitcoin and want to show your support of my
 375 activities, please send Bitcoin donations to my address
 376 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 377
 378       </div>
 379       <div class="tags">
 380
 381
 382         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/noark5">noark5</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
 383
 384
 385       </div>
 386     </div>
 387     <div class="padding"></div>
 388
 389     <div class="entry">
 390       <div class="title">
 391         <a href="http://people.skolelinux.org/pere/blog/Automatic_Google_Drive_sync_using_grive_in_Debian.html">Automatic Google Drive sync using grive in Debian</a>
 392       </div>
 393       <div class="date">
 394          4th October 2018
 395       </div>
 396       <div class="body">
 397         <p>A few days, I rescued a Windows victim over to Debian.  To try to
 398 rescue the remains, I helped set up automatic sync with Google Drive.
 399 I did not find any sensible Debian package handling this
 400 automatically, so I rebuild the grive2 source from
 401 <a href="http://www.webupd8.org/">the Ubuntu UPD8 PPA</a> to do the
 402 task and added a autostart desktop entry and a small shell script to
 403 run in the background while the user is logged in to do the sync.
 404 Here is a sketch of the setup for future reference.</p>
 405
 406 <p>I first created <tt>~/googledrive</tt>, entered the directory and
 407 ran '<tt>grive -a</tt>' to authenticate the machine/user.  Next, I
 408 created a autostart hook in <tt>~/.config/autostart/grive.desktop</tt>
 409 to start the sync when the user log in:</p>
 410
 411 <p><blockquote><pre>
 412 [Desktop Entry]
 413 Name=Google drive autosync
 414 Type=Application
 415 Exec=/home/user/bin/grive-sync
 416 </pre></blockquote></p>
 417
 418 <p>Finally, I wrote the <tt>~/bin/grive-sync</tt> script to sync
 419 ~/googledrive/ with the files in Google Drive.</p>
 420
 421 <p><blockquote><pre>
 422 #!/bin/sh
 423 set -e
 424 cd ~/
 425 cleanup() {
 426     if [ "$syncpid" ] ; then
 427         kill $syncpid
 428     fi
 429 }
 430 trap cleanup EXIT INT QUIT
 431 /usr/lib/grive/grive-sync.sh listen googledrive 2>&1 | sed "s%^%$0:%" &
 432 syncpdi=$!
 433 while true; do
 434     if ! xhost >/dev/null 2>&1 ; then
 435         echo "no DISPLAY, exiting as the user probably logged out"
 436         exit 1
 437     fi
 438     if [ ! -e /run/user/1000/grive-sync.sh_googledrive ] ; then
 439         /usr/lib/grive/grive-sync.sh sync googledrive
 440     fi
 441     sleep 300
 442 done 2>&1 | sed "s%^%$0:%"
 443 </pre></blockquote></p>
 444
 445 <p>Feel free to use the setup if you want.  It can be assumed to be
 446 GNU GPL v2 licensed (or any later version, at your leisure), but I
 447 doubt this code is possible to claim copyright on.</p>
 448
 449 <p>As usual, if you use Bitcoin and want to show your support of my
 450 activities, please send Bitcoin donations to my address
 451 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 452
 453       </div>
 454       <div class="tags">
 455
 456
 457         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>.
 458
 459
 460       </div>
 461     </div>
 462     <div class="padding"></div>
 463
 464     <p style="text-align: right;"><a href="10.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14" /></a></p>
 465     <div id="sidebar">
 466
 467
 468
 469 <h2>Archive</h2>
 470 <ul>
 471
 472 <li>2021
 473 <ul>
 474
 475 <li><a href="http://people.skolelinux.org/pere/blog/archive/2021/01/">January (2)</a></li>
 476
 477 <li><a href="http://people.skolelinux.org/pere/blog/archive/2021/02/">February (1)</a></li>
 478
 479 <li><a href="http://people.skolelinux.org/pere/blog/archive/2021/05/">May (1)</a></li>
 480
 481 <li><a href="http://people.skolelinux.org/pere/blog/archive/2021/06/">June (1)</a></li>
 482
 483 <li><a href="http://people.skolelinux.org/pere/blog/archive/2021/07/">July (3)</a></li>
 484
 485 </ul></li>
 486
 487 <li>2020
 488 <ul>
 489
 490 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/02/">February (2)</a></li>
 491
 492 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/03/">March (2)</a></li>
 493
 494 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/04/">April (2)</a></li>
 495
 496 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/05/">May (3)</a></li>
 497
 498 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/06/">June (2)</a></li>
 499
 500 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/07/">July (1)</a></li>
 501
 502 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/09/">September (1)</a></li>
 503
 504 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/10/">October (1)</a></li>
 505
 506 <li><a href="http://people.skolelinux.org/pere/blog/archive/2020/11/">November (1)</a></li>
 507
 508 </ul></li>
 509
 510 <li>2019
 511 <ul>
 512
 513 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/01/">January (4)</a></li>
 514
 515 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/02/">February (3)</a></li>
 516
 517 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/03/">March (3)</a></li>
 518
 519 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/05/">May (2)</a></li>
 520
 521 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/06/">June (5)</a></li>
 522
 523 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/07/">July (2)</a></li>
 524
 525 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/08/">August (1)</a></li>
 526
 527 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/09/">September (1)</a></li>
 528
 529 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/11/">November (1)</a></li>
 530
 531 <li><a href="http://people.skolelinux.org/pere/blog/archive/2019/12/">December (4)</a></li>
 532
 533 </ul></li>
 534
 535 <li>2018
 536 <ul>
 537
 538 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 539
 540 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 541
 542 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 543
 544 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 545
 546 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 547
 548 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 549
 550 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 551
 552 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 553
 554 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/10/">October (5)</a></li>
 555
 556 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/11/">November (2)</a></li>
 557
 558 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/12/">December (4)</a></li>
 559
 560 </ul></li>
 561
 562 <li>2017
 563 <ul>
 564
 565 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 566
 567 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 568
 569 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 570
 571 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 572
 573 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 574
 575 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 576
 577 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 578
 579 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 580
 581 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 582
 583 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 584
 585 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 586
 587 </ul></li>
 588
 589 <li>2016
 590 <ul>
 591
 592 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 593
 594 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 595
 596 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 597
 598 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 599
 600 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 601
 602 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 603
 604 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 605
 606 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 607
 608 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 609
 610 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 611
 612 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 613
 614 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 615
 616 </ul></li>
 617
 618 <li>2015
 619 <ul>
 620
 621 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 622
 623 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 624
 625 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 626
 627 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 628
 629 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 630
 631 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 632
 633 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 634
 635 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 636
 637 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 638
 639 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 640
 641 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 642
 643 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 644
 645 </ul></li>
 646
 647 <li>2014
 648 <ul>
 649
 650 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 651
 652 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 653
 654 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 655
 656 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 657
 658 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 659
 660 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 661
 662 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 663
 664 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 665
 666 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 667
 668 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 669
 670 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 671
 672 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 673
 674 </ul></li>
 675
 676 <li>2013
 677 <ul>
 678
 679 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 680
 681 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 682
 683 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 684
 685 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 686
 687 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 688
 689 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 690
 691 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 692
 693 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 694
 695 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 696
 697 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 698
 699 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 700
 701 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 702
 703 </ul></li>
 704
 705 <li>2012
 706 <ul>
 707
 708 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 709
 710 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 711
 712 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 713
 714 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 715
 716 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 717
 718 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 719
 720 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 721
 722 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 723
 724 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 725
 726 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 727
 728 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 729
 730 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 731
 732 </ul></li>
 733
 734 <li>2011
 735 <ul>
 736
 737 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 738
 739 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 740
 741 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 742
 743 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 744
 745 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 746
 747 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 748
 749 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 750
 751 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 752
 753 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 754
 755 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 756
 757 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 758
 759 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 760
 761 </ul></li>
 762
 763 <li>2010
 764 <ul>
 765
 766 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 767
 768 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 769
 770 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 771
 772 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 773
 774 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 775
 776 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 777
 778 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 779
 780 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 781
 782 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 783
 784 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 785
 786 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 787
 788 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 789
 790 </ul></li>
 791
 792 <li>2009
 793 <ul>
 794
 795 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 796
 797 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 798
 799 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 800
 801 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 802
 803 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 804
 805 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 806
 807 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 808
 809 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 810
 811 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 812
 813 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 814
 815 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 816
 817 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 818
 819 </ul></li>
 820
 821 <li>2008
 822 <ul>
 823
 824 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 825
 826 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 827
 828 </ul></li>
 829
 830 </ul>
 831
 832
 833
 834 <h2>Tags</h2>
 835 <ul>
 836
 837  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
 838
 839  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 840
 841  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 842
 843  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 844
 845  <li><a href="http://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (9)</a></li>
 846
 847  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (12)</a></li>
 848
 849  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 850
 851  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 852
 853  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 854
 855  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (176)</a></li>
 856
 857  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (159)</a></li>
 858
 859  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (8)</a></li>
 860
 861  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (11)</a></li>
 862
 863  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
 864
 865  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (28)</a></li>
 866
 867  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 868
 869  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (426)</a></li>
 870
 871  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 872
 873  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (14)</a></li>
 874
 875  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (34)</a></li>
 876
 877  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
 878
 879  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (20)</a></li>
 880
 881  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
 882
 883  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (43)</a></li>
 884
 885  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
 886
 887  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (23)</a></li>
 888
 889  <li><a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi (4)</a></li>
 890
 891  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
 892
 893  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
 894
 895  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
 896
 897  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 898
 899  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 900
 901  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
 902
 903  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (42)</a></li>
 904
 905  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (13)</a></li>
 906
 907  <li><a href="http://people.skolelinux.org/pere/blog/tags/noark5">noark5 (23)</a></li>
 908
 909  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (318)</a></li>
 910
 911  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (198)</a></li>
 912
 913  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (40)</a></li>
 914
 915  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 916
 917  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (75)</a></li>
 918
 919  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (112)</a></li>
 920
 921  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
 922
 923  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
 924
 925  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 926
 927  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
 928
 929  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (12)</a></li>
 930
 931  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 932
 933  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (7)</a></li>
 934
 935  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 936
 937  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (59)</a></li>
 938
 939  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 940
 941  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
 942
 943  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (71)</a></li>
 944
 945  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (7)</a></li>
 946
 947  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (13)</a></li>
 948
 949  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (61)</a></li>
 950
 951  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (5)</a></li>
 952
 953  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
 954
 955  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
 956
 957  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (19)</a></li>
 958
 959  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (75)</a></li>
 960
 961  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 962
 963  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (42)</a></li>
 964
 965 </ul>
 966
 967
 968     </div>
 969     <p style="text-align: right">
 970  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 971 </p>
 972
 973   </body>
 974 </html>