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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/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></div>
  24       <div class="date">22nd October 2018</div>
  25       <div class="body"><p><img src="http://people.skolelinux.org/pere/blog/images/2018-10-22-audmes-measure-speakers.png" align="right" width="40%"/></p>
  26
  27 <p>My current home stereo is a patchwork of various pieces I got on
  28 flee markeds over the years.  It is amazing what kind of equipment
  29 show up there.  I've been wondering for a while if it was possible to
  30 measure how well this equipment is working together, and decided to
  31 see how far I could get using free software.  After trawling the web I
  32 came across an article from DIY Audio and Video on
  33 <a href="https://www.diyaudioandvideo.com/Tutorial/SpeakerResponseTesting/">Speaker
  34 Testing and Analysis</a> describing how to test speakers, and it listing
  35 several software options, among them
  36 <a href="https://sourceforge.net/projects/audmes/">AUDio MEasurement
  37 System (AUDMES)</a>.  It is the only free software system I could find
  38 focusing on measuring speakers and audio frequency response.  In the
  39 process I also found an interesting article from NOVO on
  40 <a href="http://novo.press/understanding-speaker-specifications-and-frequency-response/">Understanding
  41 Speaker Specifications and Frequency Response</a> and an article from
  42 ecoustics on
  43 <a href="https://www.ecoustics.com/articles/understanding-speaker-frequency-response/">Understanding
  44 Speaker Frequency Response</a>, with a lot of information on what to
  45 look for and how to interpret the graphs.  Armed with this knowledge,
  46 I set out to measure the state of my speakers.</p>
  47
  48 <p>The first hurdle was that AUDMES hadn't seen a commit for 10 years
  49 and did not build with current compilers and libraries.  I got in
  50 touch with its author, who no longer was spending time on the program
  51 but gave me write access to the subversion repository on Sourceforge.
  52 The end result is that now the code build on Linux and is capable of
  53 saving and loading the collected frequency response data in CSV
  54 format.  The application is quite nice and flexible, and I was able to
  55 select the input and output audio interfaces independently.  This made
  56 it possible to use a USB mixer as the input source, while sending
  57 output via my laptop headphone connection.  I lacked the hardware and
  58 cabling to figure out a different way to get independent cabling to
  59 speakers and microphone.</p>
  60
  61 <p>Using this setup I could see how a large range of high frequencies
  62 apparently were not making it out of my speakers.  The picture show
  63 the frequency response measurement of one of the speakers.  Note the
  64 frequency lines seem to be slightly misaligned, compared to the CSV
  65 output from the program.  I can not hear several of these are high
  66 frequencies, according to measurement from
  67 <a href="http://freehearingtestsoftware.com">Free Hearing Test
  68 Software</a>, an freeware system to measure your hearing (still
  69 looking for a free software alternative), so I do not know if they are
  70 coming out out the speakers.  I thus do not quite know how to figure
  71 out if the missing frequencies is a problem with the microphone, the
  72 amplifier or the speakers, but I managed to rule out the audio card in my
  73 PC by measuring my Bose noise canceling headset using its own
  74 microphone.  This setup was able to see the high frequency tones, so
  75 the problem with my stereo had to be in the amplifier or speakers.</p>
  76
  77 <p>Anyway, to try to role out one factor I ended up picking up a new
  78 set of speakers at a flee marked, and these work a lot better than the
  79 old speakers, so I guess the microphone and amplifier is OK.  If you
  80 need to measure your own speakers, check out AUDMES.  If more people
  81 get involved, perhaps the project could become good enough to include
  82 in Debian?  And if you know of some other free software to measure
  83 speakers and amplifier performance, please let me know.  I am aware of
  84 the freeware option <a href="https://www.roomeqwizard.com/">REW</a>,
  85 but I want something that can be developed also when the vendor
  86 looses interest.</p>
  87
  88 <p>As usual, if you use Bitcoin and want to show your support of my
  89 activities, please send Bitcoin donations to my address
  90 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  91 </div>
  92       <div class="tags">
  93
  94
  95         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>.
  96
  97
  98       </div>
  99     </div>
 100     <div class="padding"></div>
 101
 102     <div class="entry">
 103       <div class="title"><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></div>
 104       <div class="date">21st October 2018</div>
 105       <div class="body"><p>Bittorrent is as far as I know, currently the most efficient way to
 106 distribute content on the Internet.  It is used all by all sorts of
 107 content providers, from national TV stations like
 108 <a href="https://www.nrk.no/">NRK</a>, Linux distributors like
 109 <a href="https://www.debian.org/">Debian</a> and
 110 <a href="https://www.ubuntu.com/">Ubuntu</a>, and of course the
 111 <a href="https://archive.org/">Internet archive</A>.
 112
 113 <p>Almost a month ago
 114 <a href="https://tracker.debian.org/pkg/vlc-plugin-bittorrent">a new
 115 package adding Bittorrent support to VLC</a> became available in
 116 Debian testing and unstable.  To test it, simply install it like
 117 this:</p>
 118
 119 <p><pre>
 120 apt install vlc-plugin-bittorrent
 121 </pre></p>
 122
 123 <p>Since the plugin was made available for the first time in Debian,
 124 several improvements have been made to it.  In version 2.2-4, now
 125 available in both testing and unstable, a desktop file is provided to
 126 teach browsers to start VLC when the user click on torrent files or
 127 magnet links.  The last part is thanks to me finally understanding
 128 what the strange x-scheme-handler style MIME types in desktop files
 129 are used for.  By adding x-scheme-handler/magnet to the MimeType entry
 130 in the desktop file, at least the browsers Firefox and Chromium will
 131 suggest to start VLC when selecting a magnet URI on a web page.  The
 132 end result is that now, with the plugin installed in Buster and Sid,
 133 one can visit any
 134 <a href="https://archive.org/details/CopyingIsNotTheft1080p">Internet
 135 Archive page with movies</a> using a web browser and click on the
 136 torrent link to start streaming the movie.</p>
 137
 138 <p>Note, there is still some misfeatures in the plugin.  One is the
 139 fact that it will hang and
 140 <a href="https://github.com/johang/vlc-bittorrent/issues/13">block VLC
 141 from exiting until the torrent streaming starts</a>.  Another is the
 142 fact that it
 143 <a href="https://github.com/johang/vlc-bittorrent/issues/9">will pick
 144 and play a random file in a multi file torrent</a>.  This is not
 145 always the video file you want.  Combined with the first it can be a
 146 bit hard to get the video streaming going.  But when it work, it seem
 147 to do a good job.</p>
 148
 149 <p>For the Debian packaging, I would love to find a good way to test
 150 if the plugin work with VLC using autopkgtest.  I tried, but do not
 151 know enough of the inner workings of VLC to get it working.  For now
 152 the autopkgtest script is only checking if the .so file was
 153 successfully loaded by VLC.  If you have any suggestions, please
 154 submit a patch to the Debian bug tracking system.</p>
 155
 156 <p>As usual, if you use Bitcoin and want to show your support of my
 157 activities, please send Bitcoin donations to my address
 158 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 159 </div>
 160       <div class="tags">
 161
 162
 163         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>.
 164
 165
 166       </div>
 167     </div>
 168     <div class="padding"></div>
 169
 170     <div class="entry">
 171       <div class="title"><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></div>
 172       <div class="date">18th October 2018</div>
 173       <div class="body"><p>This morning, the new release of the
 174 <a href="https://gitlab.com/OsloMet-ABI/nikita-noark5-core/">Nikita
 175 Noark 5 core project</a> was
 176 <a href="https://lists.nuug.no/pipermail/nikita-noark/2018-October/000406.html">announced
 177 on the project mailing list</a>.  The free software solution is an
 178 implementation of the Norwegian archive standard Noark 5 used by
 179 government offices in Norway.  These were the changes in version 0.2
 180 since version 0.1.1 (from NEWS.md):
 181
 182 <ul>
 183   <li>Fix typos in REL names</li>
 184   <li>Tidy up error message reporting</li>
 185   <li>Fix issue where we used Integer.valueOf(), not Integer.getInteger()</li>
 186   <li>Change some String handling to StringBuffer</li>
 187   <li>Fix error reporting</li>
 188   <li>Code tidy-up</li>
 189   <li>Fix issue using static non-synchronized SimpleDateFormat to avoid
 190       race conditions</li>
 191   <li>Fix problem where deserialisers were treating integers as strings</li>
 192   <li>Update methods to make them null-safe</li>
 193   <li>Fix many issues reported by coverity</li>
 194   <li>Improve equals(), compareTo() and hash() in domain model</li>
 195   <li>Improvements to the domain model for metadata classes</li>
 196   <li>Fix CORS issues when downloading document</li>
 197   <li>Implementation of case-handling with registryEntry and document upload</li>
 198   <li>Better support in Javascript for OPTIONS</li>
 199   <li>Adding concept description of mail integration</li>
 200   <li>Improve setting of default values for GET on ny-journalpost</li>
 201   <li>Better handling of required values during deserialisation </li>
 202   <li>Changed tilknyttetDato (M620) from date to dateTime</li>
 203   <li>Corrected some opprettetDato (M600) (de)serialisation errors.</li>
 204   <li>Improve parse error reporting.</li>
 205   <li>Started on OData search and filtering.</li>
 206   <li>Added Contributor Covenant Code of Conduct to project.</li>
 207   <li>Moved repository and project from Github to Gitlab.</li>
 208   <li>Restructured repository, moved code into src/ and web/.</li>
 209   <li>Updated code to use Spring Boot version 2.</li>
 210   <li>Added support for OAuth2 authentication.</li>
 211   <li>Fixed several bugs discovered by Coverity.</li>
 212   <li>Corrected handling of date/datetime fields.</li>
 213   <li>Improved error reporting when rejecting during deserializatoin.</li>
 214   <li>Adjusted default values provided for ny-arkivdel, ny-mappe,
 215    ny-saksmappe, ny-journalpost and ny-dokumentbeskrivelse.</li>
 216   <li>Several fixes for korrespondansepart*.</li>
 217   <li>Updated web GUI:
 218      <ul>
 219        <li>Now handle both file upload and download.</li>
 220        <li>Uses new OAuth2 authentication for login.</li>
 221        <li>Forms now fetches default values from API using GET.</li>
 222        <li>Added RFC 822 (email), TIFF and JPEG to list of possible file formats.</li>
 223      </ul></li>
 224 </ul>
 225
 226 <p>The changes and improvements are extensive.  Running diffstat on
 227 the changes between git tab 0.1.1 and 0.2 show 1098 files changed,
 228 108666 insertions(+), 54066 deletions(-).</p>
 229
 230 <p>If free and open standardized archiving API sound interesting to
 231 you, please contact us on IRC
 232 (<a href="irc://irc.freenode.net/%23nikita">#nikita on
 233 irc.freenode.net</a>) or email
 234 (<a href="https://lists.nuug.no/mailman/listinfo/nikita-noark">nikita-noark
 235 mailing list</a>).</p>
 236
 237 <p>As usual, if you use Bitcoin and want to show your support of my
 238 activities, please send Bitcoin donations to my address
 239 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 240 </div>
 241       <div class="tags">
 242
 243
 244         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/offentlig innsyn">offentlig innsyn</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</a>.
 245
 246
 247       </div>
 248     </div>
 249     <div class="padding"></div>
 250
 251     <div class="entry">
 252       <div class="title"><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></div>
 253       <div class="date"> 8th October 2018</div>
 254       <div class="body"><p>I have  earlier covered the basics of trusted timestamping using the
 255 'openssl ts' client.  See blog post for
 256 <a href="http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html">2014</a>,
 257 <a href="http://people.skolelinux.org/pere/blog/syslog_trusted_timestamp___chain_of_trusted_timestamps_for_your_syslog.html">2016</a>
 258 and
 259 <a href="http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html">2017</a>
 260 for those stories.  But some times I want to integrate the timestamping
 261 in other code, and recently I needed to integrate it into Python.
 262 After searching a bit, I found
 263 <a href="https://dev.entrouvert.org/projects/python-rfc3161">the
 264 rfc3161 library</a> which seemed like a good fit, but I soon
 265 discovered it only worked for python version 2, and I needed something
 266 that work with python version 3.  Luckily I next came across
 267 <a href="https://github.com/trbs/rfc3161ng/">the rfc3161ng library</a>,
 268 a fork of the original rfc3161 library.  Not only is it working with
 269 python 3, it have fixed a few of the bugs in the original library, and
 270 it has an active maintainer.  I decided to wrap it up and make it
 271 <a href="https://tracker.debian.org/pkg/python-rfc3161ng">available in
 272 Debian</a>, and a few days ago it entered Debian unstable and testing.</p>
 273
 274 <p>Using the library is fairly straight forward.  The only slightly
 275 problematic step is to fetch the required certificates to verify the
 276 timestamp.  For some services it is straight forward, while for others
 277 I have not yet figured out how to do it.  Here is a small standalone
 278 code example based on of the integration tests in the library code:</p>
 279
 280 <pre>
 281 #!/usr/bin/python3
 282
 283 """
 284
 285 Python 3 script demonstrating how to use the rfc3161ng module to
 286 get trusted timestamps.
 287
 288 The license of this code is the same as the license of the rfc3161ng
 289 library, ie MIT/BSD.
 290
 291 """
 292
 293 import os
 294 import pyasn1.codec.der
 295 import rfc3161ng
 296 import subprocess
 297 import tempfile
 298 import urllib.request
 299
 300 def store(f, data):
 301     f.write(data)
 302     f.flush()
 303     f.seek(0)
 304
 305 def fetch(url, f=None):
 306     response = urllib.request.urlopen(url)
 307     data = response.read()
 308     if f:
 309         store(f, data)
 310     return data
 311
 312 def main():
 313     with tempfile.NamedTemporaryFile() as cert_f,\
 314          tempfile.NamedTemporaryFile() as ca_f,\
 315          tempfile.NamedTemporaryFile() as msg_f,\
 316          tempfile.NamedTemporaryFile() as tsr_f:
 317
 318         # First fetch certificates used by service
 319         certificate_data = fetch('https://freetsa.org/files/tsa.crt', cert_f)
 320         ca_data_data = fetch('https://freetsa.org/files/cacert.pem', ca_f)
 321
 322         # Then timestamp the message
 323         timestamper = \
 324             rfc3161ng.RemoteTimestamper('http://freetsa.org/tsr',
 325                                         certificate=certificate_data)
 326         data = b"Python forever!\n"
 327         tsr = timestamper(data=data, return_tsr=True)
 328
 329         # Finally, convert message and response to something 'openssl ts' can verify
 330         store(msg_f, data)
 331         store(tsr_f, pyasn1.codec.der.encoder.encode(tsr))
 332         args = ["openssl", "ts", "-verify",
 333                 "-data", msg_f.name,
 334                 "-in", tsr_f.name,
 335                 "-CAfile", ca_f.name,
 336                 "-untrusted", cert_f.name]
 337         subprocess.check_call(args)
 338
 339 if '__main__' == __name__:
 340    main()
 341 </pre>
 342
 343 <p>The code fetches the required certificates, store them as temporary
 344 files, timestamp a simple message, store the message and timestamp to
 345 disk and ask 'openssl ts' to verify the timestamp.  A timestamp is
 346 around 1.5 kiB in size, and should be fairly easy to store for future
 347 use.</p>
 348
 349 <p>As usual, if you use Bitcoin and want to show your support of my
 350 activities, please send Bitcoin donations to my address
 351 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 352 </div>
 353       <div class="tags">
 354
 355
 356         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
 357
 358
 359       </div>
 360     </div>
 361     <div class="padding"></div>
 362
 363     <div class="entry">
 364       <div class="title"><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></div>
 365       <div class="date"> 4th October 2018</div>
 366       <div class="body"><p>A few days, I rescued a Windows victim over to Debian.  To try to
 367 rescue the remains, I helped set up automatic sync with Google Drive.
 368 I did not find any sensible Debian package handling this
 369 automatically, so I rebuild the grive2 source from
 370 <a href="http://www.webupd8.org/">the Ubuntu UPD8 PPA</a> to do the
 371 task and added a autostart desktop entry and a small shell script to
 372 run in the background while the user is logged in to do the sync.
 373 Here is a sketch of the setup for future reference.</p>
 374
 375 <p>I first created <tt>~/googledrive</tt>, entered the directory and
 376 ran '<tt>grive -a</tt>' to authenticate the machine/user.  Next, I
 377 created a autostart hook in <tt>~/.config/autostart/grive.desktop</tt>
 378 to start the sync when the user log in:</p>
 379
 380 <p><blockquote><pre>
 381 [Desktop Entry]
 382 Name=Google drive autosync
 383 Type=Application
 384 Exec=/home/user/bin/grive-sync
 385 </pre></blockquote></p>
 386
 387 <p>Finally, I wrote the <tt>~/bin/grive-sync</tt> script to sync
 388 ~/googledrive/ with the files in Google Drive.</p>
 389
 390 <p><blockquote><pre>
 391 #!/bin/sh
 392 set -e
 393 cd ~/
 394 cleanup() {
 395     if [ "$syncpid" ] ; then
 396         kill $syncpid
 397     fi
 398 }
 399 trap cleanup EXIT INT QUIT
 400 /usr/lib/grive/grive-sync.sh listen googledrive 2>&1 | sed "s%^%$0:%" &
 401 syncpdi=$!
 402 while true; do
 403     if ! xhost >/dev/null 2>&1 ; then
 404         echo "no DISPLAY, exiting as the user probably logged out"
 405         exit 1
 406     fi
 407     if [ ! -e /run/user/1000/grive-sync.sh_googledrive ] ; then
 408         /usr/lib/grive/grive-sync.sh sync googledrive
 409     fi
 410     sleep 300
 411 done 2>&1 | sed "s%^%$0:%"
 412 </pre></blockquote></p>
 413
 414 <p>Feel free to use the setup if you want.  It can be assumed to be
 415 GNU GPL v2 licensed (or any later version, at your leisure), but I
 416 doubt this code is possible to claim copyright on.</p>
 417
 418 <p>As usual, if you use Bitcoin and want to show your support of my
 419 activities, please send Bitcoin donations to my address
 420 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 421 </div>
 422       <div class="tags">
 423
 424
 425         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>.
 426
 427
 428       </div>
 429     </div>
 430     <div class="padding"></div>
 431
 432     <div class="entry">
 433       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Valutakrambod___A_python_and_bitcoin_love_story.html">Valutakrambod - A python and bitcoin love story</a></div>
 434       <div class="date">29th September 2018</div>
 435       <div class="body"><p>It would come as no surprise to anyone that I am interested in
 436 bitcoins and virtual currencies.  I've been keeping an eye on virtual
 437 currencies for many years, and it is part of the reason a few months
 438 ago, I started writing a python library for collecting currency
 439 exchange rates and trade on virtual currency exchanges.  I decided to
 440 name the end result valutakrambod, which perhaps can be translated to
 441 small currency shop.</p>
 442
 443 <p>The library uses the tornado python library to handle HTTP and
 444 websocket connections, and provide a asynchronous system for
 445 connecting to and tracking several services.  The code is available
 446 from
 447 <a href="http://github.com/petterreinholdtsen/valutakrambod">github</a>.</p>
 448
 449 </p>There are two example clients of the library.  One is very simple and
 450 list every updated buy/sell price received from the various services.
 451 This code is started by running bin/btc-rates and call the client code
 452 in valutakrambod/client.py.  The simple client look like this:</p>
 453
 454 <p><blockquote><pre>
 455 import functools
 456 import tornado.ioloop
 457 import valutakrambod
 458 class SimpleClient(object):
 459     def __init__(self):
 460         self.services = []
 461         self.streams = []
 462         pass
 463     def newdata(self, service, pair, changed):
 464         print("%-15s %s-%s: %8.3f %8.3f" % (
 465             service.servicename(),
 466             pair[0],
 467             pair[1],
 468             service.rates[pair]['ask'],
 469             service.rates[pair]['bid'])
 470         )
 471     async def refresh(self, service):
 472         await service.fetchRates(service.wantedpairs)
 473     def run(self):
 474         self.ioloop = tornado.ioloop.IOLoop.current()
 475         self.services = valutakrambod.service.knownServices()
 476         for e in self.services:
 477             service = e()
 478             service.subscribe(self.newdata)
 479             stream = service.websocket()
 480             if stream:
 481                 self.streams.append(stream)
 482             else:
 483                 # Fetch information from non-streaming services immediately
 484                 self.ioloop.call_later(len(self.services),
 485                                        functools.partial(self.refresh, service))
 486                 # as well as regularly
 487                 service.periodicUpdate(60)
 488         for stream in self.streams:
 489             stream.connect()
 490         try:
 491             self.ioloop.start()
 492         except KeyboardInterrupt:
 493             print("Interrupted by keyboard, closing all connections.")
 494             pass
 495         for stream in self.streams:
 496             stream.close()
 497 </pre></blockquote></p>
 498
 499 <p>The library client loops over all known "public" services,
 500 initialises it, subscribes to any updates from the service, checks and
 501 activates websocket streaming if the service provide it, and if no
 502 streaming is supported, fetches information from the service and sets
 503 up a periodic update every 60 seconds.  The output from this client
 504 can look like this:</p>
 505
 506 <p><blockquote><pre>
 507 Bl3p            BTC-EUR: 5687.110 5653.690
 508 Bl3p            BTC-EUR: 5687.110 5653.690
 509 Bl3p            BTC-EUR: 5687.110 5653.690
 510 Hitbtc          BTC-USD: 6594.560 6593.690
 511 Hitbtc          BTC-USD: 6594.560 6593.690
 512 Bl3p            BTC-EUR: 5687.110 5653.690
 513 Hitbtc          BTC-USD: 6594.570 6593.690
 514 Bitstamp        EUR-USD:    1.159    1.154
 515 Hitbtc          BTC-USD: 6594.570 6593.690
 516 Hitbtc          BTC-USD: 6594.580 6593.690
 517 Hitbtc          BTC-USD: 6594.580 6593.690
 518 Hitbtc          BTC-USD: 6594.580 6593.690
 519 Bl3p            BTC-EUR: 5687.110 5653.690
 520 Paymium         BTC-EUR: 5680.000 5620.240
 521 </pre></blockquote></p>
 522
 523 <p>The exchange order book is tracked in addition to the best buy/sell
 524 price, for those that need to know the details.</p>
 525
 526 <p>The other example client is focusing on providing a curses view
 527 with updated buy/sell prices as soon as they are received from the
 528 services.  This code is located in bin/btc-rates-curses and activated
 529 by using the '-c' argument.  Without the argument the "curses" output
 530 is printed without using curses, which is useful for debugging.  The
 531 curses view look like this:</p>
 532
 533 <p><blockquote><pre>
 534            Name Pair   Bid         Ask         Spr    Ftcd    Age
 535  BitcoinsNorway BTCEUR   5591.8400   5711.0800   2.1%   16    nan     60
 536        Bitfinex BTCEUR   5671.0000   5671.2000   0.0%   16     22     59
 537         Bitmynt BTCEUR   5580.8000   5807.5200   3.9%   16     41     60
 538          Bitpay BTCEUR   5663.2700         nan   nan%   15    nan     60
 539        Bitstamp BTCEUR   5664.8400   5676.5300   0.2%    0      1      1
 540            Bl3p BTCEUR   5653.6900   5684.9400   0.5%    0    nan     19
 541        Coinbase BTCEUR   5600.8200   5714.9000   2.0%   15    nan    nan
 542          Kraken BTCEUR   5670.1000   5670.2000   0.0%   14     17     60
 543         Paymium BTCEUR   5620.0600   5680.0000   1.1%    1   7515    nan
 544  BitcoinsNorway BTCNOK  52898.9700  54034.6100   2.1%   16    nan     60
 545         Bitmynt BTCNOK  52960.3200  54031.1900   2.0%   16     41     60
 546          Bitpay BTCNOK  53477.7833         nan   nan%   16    nan     60
 547        Coinbase BTCNOK  52990.3500  54063.0600   2.0%   15    nan    nan
 548         MiraiEx BTCNOK  52856.5300  54100.6000   2.3%   16    nan    nan
 549  BitcoinsNorway BTCUSD   6495.5300   6631.5400   2.1%   16    nan     60
 550        Bitfinex BTCUSD   6590.6000   6590.7000   0.0%   16     23     57
 551          Bitpay BTCUSD   6564.1300         nan   nan%   15    nan     60
 552        Bitstamp BTCUSD   6561.1400   6565.6200   0.1%    0      2      1
 553        Coinbase BTCUSD   6504.0600   6635.9700   2.0%   14    nan    117
 554          Gemini BTCUSD   6567.1300   6573.0700   0.1%   16     89    nan
 555          Hitbtc+BTCUSD   6592.6200   6594.2100   0.0%    0      0      0
 556          Kraken BTCUSD   6565.2000   6570.9000   0.1%   15     17     58
 557   Exchangerates EURNOK      9.4665      9.4665   0.0%   16 107789    nan
 558      Norgesbank EURNOK      9.4665      9.4665   0.0%   16 107789    nan
 559        Bitstamp EURUSD      1.1537      1.1593   0.5%    4      5      1
 560   Exchangerates EURUSD      1.1576      1.1576   0.0%   16 107789    nan
 561  BitcoinsNorway LTCEUR      1.0000     49.0000  98.0%   16    nan    nan
 562  BitcoinsNorway LTCNOK    492.4800    503.7500   2.2%   16    nan     60
 563  BitcoinsNorway LTCUSD      1.0221     49.0000  97.9%   15    nan    nan
 564      Norgesbank USDNOK      8.1777      8.1777   0.0%   16 107789    nan
 565 </pre></blockquote></p>
 566
 567 <p>The code for this client is too complex for a simple blog post, so
 568 you will have to check out the git repository to figure out how it
 569 work.  What I can tell is how the three last numbers on each line
 570 should be interpreted.  The first is how many seconds ago information
 571 was received from the service.  The second is how long ago, according
 572 to the service, the provided information was updated.  The last is an
 573 estimate on how often the buy/sell values change.</p>
 574
 575 <p>If you find this library useful, or would like to improve it, I
 576 would love to hear from you.  Note that for some of the services I've
 577 implemented a trading API.  It might be the topic of a future blog
 578 post.</p>
 579
 580 <p>As usual, if you use Bitcoin and want to show your support of my
 581 activities, please send Bitcoin donations to my address
 582 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 583 </div>
 584       <div class="tags">
 585
 586
 587         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 588
 589
 590       </div>
 591     </div>
 592     <div class="padding"></div>
 593
 594     <div class="entry">
 595       <div class="title"><a href="http://people.skolelinux.org/pere/blog/VLC_in_Debian_now_can_do_bittorrent_streaming.html">VLC in Debian now can do bittorrent streaming</a></div>
 596       <div class="date">24th September 2018</div>
 597       <div class="body"><p>Back in February, I got curious to see
 598 <a href="http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html">if
 599 VLC now supported Bittorrent streaming</a>.  It did not, despite the
 600 fact that the idea and code to handle such streaming had been floating
 601 around for years.  I did however find
 602 <a href="https://github.com/johang/vlc-bittorrent">a standalone plugin
 603 for VLC</a> to do it, and half a year later I decided to wrap up the
 604 plugin and get it into Debian.  I uploaded it to NEW a few days ago,
 605 and am very happy to report that it
 606 <a href="https://tracker.debian.org/pkg/vlc-plugin-bittorrent">entered
 607 Debian</a> a few hours ago, and should be available in Debian/Unstable
 608 tomorrow, and Debian/Testing in a few days.</p>
 609
 610 <p>With the vlc-plugin-bittorrent package installed you should be able
 611 to stream videos using a simple call to</p>
 612
 613 <p><blockquote><pre>
 614 vlc https://archive.org/download/TheGoat/TheGoat_archive.torrent
 615 </pre></blockquote></p>
 616
 617 </p>It can handle magnet links too.  Now if only native vlc had
 618 bittorrent support.  Then a lot more would be helping each other to
 619 share public domain and creative commons movies.  The plugin need some
 620 stability work with seeking and picking the right file in a torrent
 621 with many files, but is already usable.  Please note that the plugin
 622 is not removing downloaded files when vlc is stopped, so it can fill
 623 up your disk if you are not careful.  Have fun. :)</p>
 624
 625 <p>I would love to get help maintaining this package.  Get in touch if
 626 you are interested.</p>
 627
 628 <p>As usual, if you use Bitcoin and want to show your support of my
 629 activities, please send Bitcoin donations to my address
 630 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 631 </div>
 632       <div class="tags">
 633
 634
 635         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>.
 636
 637
 638       </div>
 639     </div>
 640     <div class="padding"></div>
 641
 642     <div class="entry">
 643       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Using_the_Kodi_API_to_play_Youtube_videos.html">Using the Kodi API to play Youtube videos</a></div>
 644       <div class="date"> 2nd September 2018</div>
 645       <div class="body"><p>I continue to explore my Kodi installation, and today I wanted to
 646 tell it to play a youtube URL I received in a chat, without having to
 647 insert search terms using the on-screen keyboard.  After searching the
 648 web for API access to the Youtube plugin and testing a bit, I managed
 649 to find a recipe that worked.  If you got a kodi instance with its API
 650 available from http://kodihost/jsonrpc, you can try the following to
 651 have check out a nice cover band.</p>
 652
 653 <p><blockquote><pre>curl --silent --header 'Content-Type: application/json' \
 654   --data-binary '{ "id": 1, "jsonrpc": "2.0", "method": "Player.Open",
 655   "params": {"item": { "file":
 656   "plugin://plugin.video.youtube/play/?video_id=LuRGVM9O0qg" } } }' \
 657   http://projector.local/jsonrpc</pre></blockquote></p>
 658
 659 <p>I've extended kodi-stream program to take a video source as its
 660 first argument.  It can now handle direct video links, youtube links
 661 and 'desktop' to stream my desktop to Kodi.  It is almost like a
 662 Chromecast. :)</p>
 663
 664 <p>As usual, if you use Bitcoin and want to show your support of my
 665 activities, please send Bitcoin donations to my address
 666 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 667 </div>
 668       <div class="tags">
 669
 670
 671         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/kodi">kodi</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 672
 673
 674       </div>
 675     </div>
 676     <div class="padding"></div>
 677
 678     <div class="entry">
 679       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html">Software created using taxpayers’ money should be Free Software</a></div>
 680       <div class="date">30th August 2018</div>
 681       <div class="body"><p>It might seem obvious that software created using tax money should
 682 be available for everyone to use and improve.  Free Software
 683 Foundation Europe recentlystarted a campaign to help get more people
 684 to understand this, and I just signed the petition on
 685 <a href="https://publiccode.eu/">Public Money, Public Code</a> to help
 686 them. I hope you too will do the same.</p>
 687 </div>
 688       <div class="tags">
 689
 690
 691         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>.
 692
 693
 694       </div>
 695     </div>
 696     <div class="padding"></div>
 697
 698     <div class="entry">
 699       <div class="title"><a href="http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html">A bit more on privacy respecting health monitor / fitness tracker</a></div>
 700       <div class="date">13th August 2018</div>
 701       <div class="body"><p>A few days ago, I wondered if there are any privacy respecting
 702 health monitors and/or fitness trackers available for sale these days.
 703 I would like to buy one, but do not want to share my personal data
 704 with strangers, nor be forced to have a mobile phone to get data out
 705 of the unit.  I've received some ideas, and would like to share them
 706 with you.
 707
 708 One interesting data point was a pointer to a Free Software app for
 709 Android named
 710 <a href="https://github.com/Freeyourgadget/Gadgetbridge/">Gadgetbridge</a>.
 711 It provide cloudless collection and storing of data from a variety of
 712 trackers.  Its
 713 <a href="https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices">list
 714 of supported devices</a> is a good indicator for units where the
 715 protocol is fairly open, as it is obviously being handled by Free
 716 Software.  Other units are reportedly encrypting the collected
 717 information with their own public key, making sure only the vendor
 718 cloud service is able to extract data from the unit.  The people
 719 contacting me about Gadgetbirde said they were using
 720 <a href="https://us.amazfit.com/shop/bip?variant=336750">Amazfit
 721 Bip</a> and
 722 <a href="http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/">Xiaomi
 723 Band 3</a>.</p>
 724
 725 <p>I also got a suggestion to look at some of the units from Garmin.
 726 I was told their GPS watches can be connected via USB and show up as a
 727 USB storage device with
 728 <a href="https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html">Garmin
 729 FIT files</a> containing the collected measurements.  While
 730 proprietary, FIT files apparently can be read at least by
 731 <a href="https://www.gpsbabel.org">GPSBabel</a> and the
 732 <a href="https://apps.nextcloud.com/apps/gpxpod">GpxPod</a> Nextcloud
 733 app.  It is unclear to me if they can read step count and heart rate
 734 data.  The person I talked to was using a
 735 <a href="https://buy.garmin.com/en-US/US/p/564291">Garmin Forerunner
 736 935</a>, which is a fairly expensive unit.  I doubt it is worth it for
 737 a unit where the vendor clearly is trying its best to move from open
 738 to closed systems.  I still remember when Garmin dropped NMEA support
 739 in its GPSes.</p>
 740
 741 <p>A final idea was to build ones own unit, perhaps by basing it on a
 742 wearable hardware platforms like
 743 <a href="https://learn.adafruit.com/flora-geo-watch">the Flora Geo
 744 Watch</a>.  Sound like fun, but I had more money than time to spend on
 745 the topic, so I suspect it will have to wait for another time.</p>
 746
 747 <p>While I was working on tracking down links, I came across an
 748 inspiring TED talk by Dave Debronkart about
 749 <a href="https://archive.org/details/DavedeBronkart_2010X">being a
 750 e-patient</a>, and discovered the web site
 751 <a href="https://participatorymedicine.org/epatients/">Participatory
 752 Medicine</a>.  If you too want to track your own health and fitness
 753 without having information about your private life floating around on
 754 computers owned by others, I recommend checking it out.</p>
 755
 756 <p>As usual, if you use Bitcoin and want to show your support of my
 757 activities, please send Bitcoin donations to my address
 758 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 759 </div>
 760       <div class="tags">
 761
 762
 763         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 764
 765
 766       </div>
 767     </div>
 768     <div class="padding"></div>
 769
 770     <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>
 771     <div id="sidebar">
 772
 773
 774
 775 <h2>Archive</h2>
 776 <ul>
 777
 778 <li>2018
 779 <ul>
 780
 781 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 782
 783 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 784
 785 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 786
 787 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 788
 789 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 790
 791 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 792
 793 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 794
 795 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 796
 797 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/10/">October (5)</a></li>
 798
 799 </ul></li>
 800
 801 <li>2017
 802 <ul>
 803
 804 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 805
 806 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 807
 808 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 809
 810 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 811
 812 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 813
 814 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 815
 816 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 817
 818 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 819
 820 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 821
 822 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 823
 824 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 825
 826 </ul></li>
 827
 828 <li>2016
 829 <ul>
 830
 831 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 832
 833 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 834
 835 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 836
 837 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 838
 839 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 840
 841 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 842
 843 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 844
 845 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 846
 847 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 848
 849 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 850
 851 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 852
 853 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 854
 855 </ul></li>
 856
 857 <li>2015
 858 <ul>
 859
 860 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 861
 862 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 863
 864 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 865
 866 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 867
 868 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 869
 870 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 871
 872 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 873
 874 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 875
 876 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 877
 878 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 879
 880 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 881
 882 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 883
 884 </ul></li>
 885
 886 <li>2014
 887 <ul>
 888
 889 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 890
 891 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 892
 893 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 894
 895 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 896
 897 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 898
 899 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 900
 901 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 902
 903 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 904
 905 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 906
 907 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 908
 909 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 910
 911 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 912
 913 </ul></li>
 914
 915 <li>2013
 916 <ul>
 917
 918 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 919
 920 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 921
 922 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 923
 924 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 925
 926 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 927
 928 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 929
 930 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 931
 932 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 933
 934 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 935
 936 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 937
 938 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 939
 940 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 941
 942 </ul></li>
 943
 944 <li>2012
 945 <ul>
 946
 947 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 948
 949 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 950
 951 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 952
 953 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 954
 955 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 956
 957 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 958
 959 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 960
 961 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 962
 963 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 964
 965 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 966
 967 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 968
 969 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 970
 971 </ul></li>
 972
 973 <li>2011
 974 <ul>
 975
 976 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 977
 978 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 979
 980 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 981
 982 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 983
 984 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 985
 986 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 987
 988 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 989
 990 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 991
 992 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 993
 994 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 995
 996 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 997
 998 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 999
1000 </ul></li>
1001
1002 <li>2010
1003 <ul>
1004
1005 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1006
1007 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1008
1009 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1010
1011 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1012
1013 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1014
1015 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1016
1017 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1018
1019 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1020
1021 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1022
1023 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1024
1025 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1026
1027 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1028
1029 </ul></li>
1030
1031 <li>2009
1032 <ul>
1033
1034 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1035
1036 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1037
1038 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1039
1040 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1041
1042 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1043
1044 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1045
1046 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1047
1048 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1049
1050 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1051
1052 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1053
1054 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1055
1056 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1057
1058 </ul></li>
1059
1060 <li>2008
1061 <ul>
1062
1063 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1064
1065 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1066
1067 </ul></li>
1068
1069 </ul>
1070
1071
1072
1073 <h2>Tags</h2>
1074 <ul>
1075
1076  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
1077
1078  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1079
1080  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1081
1082  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1083
1084  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (10)</a></li>
1085
1086  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
1087
1088  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1089
1090  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1091
1092  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (163)</a></li>
1093
1094  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
1095
1096  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
1097
1098  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1099
1100  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
1101
1102  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (25)</a></li>
1103
1104  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1105
1106  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (390)</a></li>
1107
1108  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1109
1110  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (13)</a></li>
1111
1112  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (32)</a></li>
1113
1114  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1115
1116  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1117
1118  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1119
1120  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1121
1122  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
1123
1124  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
1125
1126  <li><a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi (3)</a></li>
1127
1128  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1129
1130  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
1131
1132  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1133
1134  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1135
1136  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1137
1138  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1139
1140  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
1141
1142  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (11)</a></li>
1143
1144  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
1145
1146  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (191)</a></li>
1147
1148  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (34)</a></li>
1149
1150  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1151
1152  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (72)</a></li>
1153
1154  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
1155
1156  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1157
1158  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1159
1160  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1161
1162  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1163
1164  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
1165
1166  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1167
1168  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
1169
1170  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1171
1172  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (55)</a></li>
1173
1174  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1175
1176  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1177
1178  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (56)</a></li>
1179
1180  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
1181
1182  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
1183
1184  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
1185
1186  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
1187
1188  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1189
1190  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1191
1192  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (13)</a></li>
1193
1194  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (69)</a></li>
1195
1196  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1197
1198  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
1199
1200 </ul>
1201
1202
1203     </div>
1204     <p style="text-align: right">
1205  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1206 </p>
1207
1208   </body>
1209 </html>