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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/Fetching_trusted_timestamps_using_the_rfc3161ng_python_module.html">Fetching trusted timestamps using the rfc3161ng python module</a></div>
  24       <div class="date"> 8th October 2018</div>
  25       <div class="body"><p>I have  earlier covered the basics of trusted timestamping using the
  26 'openssl ts' client.  See blog post for
  27 <a href="http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html">2014</a>,
  28 <a href="http://people.skolelinux.org/pere/blog/syslog_trusted_timestamp___chain_of_trusted_timestamps_for_your_syslog.html">2016</a>
  29 and
  30 <a href="http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html">2017</a>
  31 for those stories.  But some times I want to integrate the timestamping
  32 in other code, and recently I needed to integrate it into Python.
  33 After searching a bit, I found
  34 <a href="https://dev.entrouvert.org/projects/python-rfc3161">the
  35 rfc3161 library</a> which seemed like a good fit, but I soon
  36 discovered it only worked for python version 2, and I needed something
  37 that work with python version 3.  Luckily I next came across
  38 <a href="https://github.com/trbs/rfc3161ng/">the rfc3161ng library</a>,
  39 a fork of the original rfc3161 library.  Not only is it working with
  40 python 3, it have fixed a few of the bugs in the original library, and
  41 it has an active maintainer.  I decided to wrap it up and make it
  42 <a href="https://tracker.debian.org/pkg/python-rfc3161ng">available in
  43 Debian</a>, and a few days ago it entered Debian unstable and testing.</p>
  44
  45 <p>Using the library is fairly straight forward.  The only slightly
  46 problematic step is to fetch the required certificates to verify the
  47 timestamp.  For some services it is straight forward, while for others
  48 I have not yet figured out how to do it.  Here is a small standalone
  49 code example based on of the integration tests in the library code:</p>
  50
  51 <pre>
  52 #!/usr/bin/python3
  53
  54 """
  55
  56 Python 3 script demonstrating how to use the rfc3161ng module to
  57 get trusted timestamps.
  58
  59 The license of this code is the same as the license of the rfc3161ng
  60 library, ie MIT/BSD.
  61
  62 """
  63
  64 import os
  65 import pyasn1.codec.der
  66 import rfc3161ng
  67 import subprocess
  68 import tempfile
  69 import urllib.request
  70
  71 def store(f, data):
  72     f.write(data)
  73     f.flush()
  74     f.seek(0)
  75
  76 def fetch(url, f=None):
  77     response = urllib.request.urlopen(url)
  78     data = response.read()
  79     if f:
  80         store(f, data)
  81     return data
  82
  83 def main():
  84     with tempfile.NamedTemporaryFile() as cert_f,\
  85          tempfile.NamedTemporaryFile() as ca_f,\
  86          tempfile.NamedTemporaryFile() as msg_f,\
  87          tempfile.NamedTemporaryFile() as tsr_f:
  88
  89         # First fetch certificates used by service
  90         certificate_data = fetch('https://freetsa.org/files/tsa.crt', cert_f)
  91         ca_data_data = fetch('https://freetsa.org/files/cacert.pem', ca_f)
  92
  93         # Then timestamp the message
  94         timestamper = \
  95             rfc3161ng.RemoteTimestamper('http://freetsa.org/tsr',
  96                                         certificate=certificate_data)
  97         data = b"Python forever!\n"
  98         tsr = timestamper(data=data, return_tsr=True)
  99
 100         # Finally, convert message and response to something 'openssl ts' can verify
 101         store(msg_f, data)
 102         store(tsr_f, pyasn1.codec.der.encoder.encode(tsr))
 103         args = ["openssl", "ts", "-verify",
 104                 "-data", msg_f.name,
 105                 "-in", tsr_f.name,
 106                 "-CAfile", ca_f.name,
 107                 "-untrusted", cert_f.name]
 108         subprocess.check_call(args)
 109
 110 if '__main__' == __name__:
 111    main()
 112 </pre>
 113
 114 <p>The code fetches the required certificates, store them as temporary
 115 files, timestamp a simple message, store the message and timestamp to
 116 disk and ask 'openssl ts' to verify the timestamp.  A timestamp is
 117 around 1.5 kiB in size, and should be fairly easy to store for future
 118 use.</p>
 119
 120 <p>As usual, if you use Bitcoin and want to show your support of my
 121 activities, please send Bitcoin donations to my address
 122 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 123 </div>
 124       <div class="tags">
 125
 126
 127         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>.
 128
 129
 130       </div>
 131     </div>
 132     <div class="padding"></div>
 133
 134     <div class="entry">
 135       <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>
 136       <div class="date"> 4th October 2018</div>
 137       <div class="body"><p>A few days, I rescued a Windows victim over to Debian.  To try to
 138 rescue the remains, I helped set up automatic sync with Google Drive.
 139 I did not find any sensible Debian package handling this
 140 automatically, so I rebuild the grive2 source from
 141 <a href="http://www.webupd8.org/">the Ubuntu UPD8 PPA</a> to do the
 142 task and added a autostart desktop entry and a small shell script to
 143 run in the background while the user is logged in to do the sync.
 144 Here is a sketch of the setup for future reference.</p>
 145
 146 <p>I first created <tt>~/googledrive</tt>, entered the directory and
 147 ran '<tt>grive -a</tt>' to authenticate the machine/user.  Next, I
 148 created a autostart hook in <tt>~/.config/autostart/grive.desktop</tt>
 149 to start the sync when the user log in:</p>
 150
 151 <p><blockquote><pre>
 152 [Desktop Entry]
 153 Name=Google drive autosync
 154 Type=Application
 155 Exec=/home/user/bin/grive-sync
 156 </pre></blockquote></p>
 157
 158 <p>Finally, I wrote the <tt>~/bin/grive-sync</tt> script to sync
 159 ~/googledrive/ with the files in Google Drive.</p>
 160
 161 <p><blockquote><pre>
 162 #!/bin/sh
 163 set -e
 164 cd ~/
 165 cleanup() {
 166     if [ "$syncpid" ] ; then
 167         kill $syncpid
 168     fi
 169 }
 170 trap cleanup EXIT INT QUIT
 171 /usr/lib/grive/grive-sync.sh listen googledrive 2>&1 | sed "s%^%$0:%" &
 172 syncpdi=$!
 173 while true; do
 174     if ! xhost >/dev/null 2>&1 ; then
 175         echo "no DISPLAY, exiting as the user probably logged out"
 176         exit 1
 177     fi
 178     if [ ! -e /run/user/1000/grive-sync.sh_googledrive ] ; then
 179         /usr/lib/grive/grive-sync.sh sync googledrive
 180     fi
 181     sleep 300
 182 done 2>&1 | sed "s%^%$0:%"
 183 </pre></blockquote></p>
 184
 185 <p>Feel free to use the setup if you want.  It can be assumed to be
 186 GNU GPL v2 licensed (or any later version, at your leisure), but I
 187 doubt this code is possible to claim copyright on.</p>
 188
 189 <p>As usual, if you use Bitcoin and want to show your support of my
 190 activities, please send Bitcoin donations to my address
 191 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 192 </div>
 193       <div class="tags">
 194
 195
 196         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>.
 197
 198
 199       </div>
 200     </div>
 201     <div class="padding"></div>
 202
 203     <div class="entry">
 204       <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>
 205       <div class="date">29th September 2018</div>
 206       <div class="body"><p>It would come as no surprise to anyone that I am interested in
 207 bitcoins and virtual currencies.  I've been keeping an eye on virtual
 208 currencies for many years, and it is part of the reason a few months
 209 ago, I started writing a python library for collecting currency
 210 exchange rates and trade on virtual currency exchanges.  I decided to
 211 name the end result valutakrambod, which perhaps can be translated to
 212 small currency shop.</p>
 213
 214 <p>The library uses the tornado python library to handle HTTP and
 215 websocket connections, and provide a asynchronous system for
 216 connecting to and tracking several services.  The code is available
 217 from
 218 <a href="http://github.com/petterreinholdtsen/valutakrambod">github</a>.</p>
 219
 220 </p>There are two example clients of the library.  One is very simple and
 221 list every updated buy/sell price received from the various services.
 222 This code is started by running bin/btc-rates and call the client code
 223 in valutakrambod/client.py.  The simple client look like this:</p>
 224
 225 <p><blockquote><pre>
 226 import functools
 227 import tornado.ioloop
 228 import valutakrambod
 229 class SimpleClient(object):
 230     def __init__(self):
 231         self.services = []
 232         self.streams = []
 233         pass
 234     def newdata(self, service, pair, changed):
 235         print("%-15s %s-%s: %8.3f %8.3f" % (
 236             service.servicename(),
 237             pair[0],
 238             pair[1],
 239             service.rates[pair]['ask'],
 240             service.rates[pair]['bid'])
 241         )
 242     async def refresh(self, service):
 243         await service.fetchRates(service.wantedpairs)
 244     def run(self):
 245         self.ioloop = tornado.ioloop.IOLoop.current()
 246         self.services = valutakrambod.service.knownServices()
 247         for e in self.services:
 248             service = e()
 249             service.subscribe(self.newdata)
 250             stream = service.websocket()
 251             if stream:
 252                 self.streams.append(stream)
 253             else:
 254                 # Fetch information from non-streaming services immediately
 255                 self.ioloop.call_later(len(self.services),
 256                                        functools.partial(self.refresh, service))
 257                 # as well as regularly
 258                 service.periodicUpdate(60)
 259         for stream in self.streams:
 260             stream.connect()
 261         try:
 262             self.ioloop.start()
 263         except KeyboardInterrupt:
 264             print("Interrupted by keyboard, closing all connections.")
 265             pass
 266         for stream in self.streams:
 267             stream.close()
 268 </pre></blockquote></p>
 269
 270 <p>The library client loops over all known "public" services,
 271 initialises it, subscribes to any updates from the service, checks and
 272 activates websocket streaming if the service provide it, and if no
 273 streaming is supported, fetches information from the service and sets
 274 up a periodic update every 60 seconds.  The output from this client
 275 can look like this:</p>
 276
 277 <p><blockquote><pre>
 278 Bl3p            BTC-EUR: 5687.110 5653.690
 279 Bl3p            BTC-EUR: 5687.110 5653.690
 280 Bl3p            BTC-EUR: 5687.110 5653.690
 281 Hitbtc          BTC-USD: 6594.560 6593.690
 282 Hitbtc          BTC-USD: 6594.560 6593.690
 283 Bl3p            BTC-EUR: 5687.110 5653.690
 284 Hitbtc          BTC-USD: 6594.570 6593.690
 285 Bitstamp        EUR-USD:    1.159    1.154
 286 Hitbtc          BTC-USD: 6594.570 6593.690
 287 Hitbtc          BTC-USD: 6594.580 6593.690
 288 Hitbtc          BTC-USD: 6594.580 6593.690
 289 Hitbtc          BTC-USD: 6594.580 6593.690
 290 Bl3p            BTC-EUR: 5687.110 5653.690
 291 Paymium         BTC-EUR: 5680.000 5620.240
 292 </pre></blockquote></p>
 293
 294 <p>The exchange order book is tracked in addition to the best buy/sell
 295 price, for those that need to know the details.</p>
 296
 297 <p>The other example client is focusing on providing a curses view
 298 with updated buy/sell prices as soon as they are received from the
 299 services.  This code is located in bin/btc-rates-curses and activated
 300 by using the '-c' argument.  Without the argument the "curses" output
 301 is printed without using curses, which is useful for debugging.  The
 302 curses view look like this:</p>
 303
 304 <p><blockquote><pre>
 305            Name Pair   Bid         Ask         Spr    Ftcd    Age
 306  BitcoinsNorway BTCEUR   5591.8400   5711.0800   2.1%   16    nan     60
 307        Bitfinex BTCEUR   5671.0000   5671.2000   0.0%   16     22     59
 308         Bitmynt BTCEUR   5580.8000   5807.5200   3.9%   16     41     60
 309          Bitpay BTCEUR   5663.2700         nan   nan%   15    nan     60
 310        Bitstamp BTCEUR   5664.8400   5676.5300   0.2%    0      1      1
 311            Bl3p BTCEUR   5653.6900   5684.9400   0.5%    0    nan     19
 312        Coinbase BTCEUR   5600.8200   5714.9000   2.0%   15    nan    nan
 313          Kraken BTCEUR   5670.1000   5670.2000   0.0%   14     17     60
 314         Paymium BTCEUR   5620.0600   5680.0000   1.1%    1   7515    nan
 315  BitcoinsNorway BTCNOK  52898.9700  54034.6100   2.1%   16    nan     60
 316         Bitmynt BTCNOK  52960.3200  54031.1900   2.0%   16     41     60
 317          Bitpay BTCNOK  53477.7833         nan   nan%   16    nan     60
 318        Coinbase BTCNOK  52990.3500  54063.0600   2.0%   15    nan    nan
 319         MiraiEx BTCNOK  52856.5300  54100.6000   2.3%   16    nan    nan
 320  BitcoinsNorway BTCUSD   6495.5300   6631.5400   2.1%   16    nan     60
 321        Bitfinex BTCUSD   6590.6000   6590.7000   0.0%   16     23     57
 322          Bitpay BTCUSD   6564.1300         nan   nan%   15    nan     60
 323        Bitstamp BTCUSD   6561.1400   6565.6200   0.1%    0      2      1
 324        Coinbase BTCUSD   6504.0600   6635.9700   2.0%   14    nan    117
 325          Gemini BTCUSD   6567.1300   6573.0700   0.1%   16     89    nan
 326          Hitbtc+BTCUSD   6592.6200   6594.2100   0.0%    0      0      0
 327          Kraken BTCUSD   6565.2000   6570.9000   0.1%   15     17     58
 328   Exchangerates EURNOK      9.4665      9.4665   0.0%   16 107789    nan
 329      Norgesbank EURNOK      9.4665      9.4665   0.0%   16 107789    nan
 330        Bitstamp EURUSD      1.1537      1.1593   0.5%    4      5      1
 331   Exchangerates EURUSD      1.1576      1.1576   0.0%   16 107789    nan
 332  BitcoinsNorway LTCEUR      1.0000     49.0000  98.0%   16    nan    nan
 333  BitcoinsNorway LTCNOK    492.4800    503.7500   2.2%   16    nan     60
 334  BitcoinsNorway LTCUSD      1.0221     49.0000  97.9%   15    nan    nan
 335      Norgesbank USDNOK      8.1777      8.1777   0.0%   16 107789    nan
 336 </pre></blockquote></p>
 337
 338 <p>The code for this client is too complex for a simple blog post, so
 339 you will have to check out the git repository to figure out how it
 340 work.  What I can tell is how the three last numbers on each line
 341 should be interpreted.  The first is how many seconds ago information
 342 was received from the service.  The second is how long ago, according
 343 to the service, the provided information was updated.  The last is an
 344 estimate on how often the buy/sell values change.</p>
 345
 346 <p>If you find this library useful, or would like to improve it, I
 347 would love to hear from you.  Note that for some of the services I've
 348 implemented a trading API.  It might be the topic of a future blog
 349 post.</p>
 350
 351 <p>As usual, if you use Bitcoin and want to show your support of my
 352 activities, please send Bitcoin donations to my address
 353 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 354 </div>
 355       <div class="tags">
 356
 357
 358         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>.
 359
 360
 361       </div>
 362     </div>
 363     <div class="padding"></div>
 364
 365     <div class="entry">
 366       <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>
 367       <div class="date">24th September 2018</div>
 368       <div class="body"><p>Back in February, I got curious to see
 369 <a href="http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html">if
 370 VLC now supported Bittorrent streaming</a>.  It did not, despite the
 371 fact that the idea and code to handle such streaming had been floating
 372 around for years.  I did however find
 373 <a href="https://github.com/johang/vlc-bittorrent">a standalone plugin
 374 for VLC</a> to do it, and half a year later I decided to wrap up the
 375 plugin and get it into Debian.  I uploaded it to NEW a few days ago,
 376 and am very happy to report that it
 377 <a href="https://tracker.debian.org/pkg/vlc-plugin-bittorrent">entered
 378 Debian</a> a few hours ago, and should be available in Debian/Unstable
 379 tomorrow, and Debian/Testing in a few days.</p>
 380
 381 <p>With the vlc-plugin-bittorrent package installed you should be able
 382 to stream videos using a simple call to</p>
 383
 384 <p><blockquote><pre>
 385 vlc https://archive.org/download/TheGoat/TheGoat_archive.torrent
 386 </pre></blockquote></p>
 387
 388 </p>It can handle magnet links too.  Now if only native vlc had
 389 bittorrent support.  Then a lot more would be helping each other to
 390 share public domain and creative commons movies.  The plugin need some
 391 stability work with seeking and picking the right file in a torrent
 392 with many files, but is already usable.  Please note that the plugin
 393 is not removing downloaded files when vlc is stopped, so it can fill
 394 up your disk if you are not careful.  Have fun. :)</p>
 395
 396 <p>I would love to get help maintaining this package.  Get in touch if
 397 you are interested.</p>
 398
 399 <p>As usual, if you use Bitcoin and want to show your support of my
 400 activities, please send Bitcoin donations to my address
 401 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 402 </div>
 403       <div class="tags">
 404
 405
 406         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>.
 407
 408
 409       </div>
 410     </div>
 411     <div class="padding"></div>
 412
 413     <div class="entry">
 414       <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>
 415       <div class="date"> 2nd September 2018</div>
 416       <div class="body"><p>I continue to explore my Kodi installation, and today I wanted to
 417 tell it to play a youtube URL I received in a chat, without having to
 418 insert search terms using the on-screen keyboard.  After searching the
 419 web for API access to the Youtube plugin and testing a bit, I managed
 420 to find a recipe that worked.  If you got a kodi instance with its API
 421 available from http://kodihost/jsonrpc, you can try the following to
 422 have check out a nice cover band.</p>
 423
 424 <p><blockquote><pre>curl --silent --header 'Content-Type: application/json' \
 425   --data-binary '{ "id": 1, "jsonrpc": "2.0", "method": "Player.Open",
 426   "params": {"item": { "file":
 427   "plugin://plugin.video.youtube/play/?video_id=LuRGVM9O0qg" } } }' \
 428   http://projector.local/jsonrpc</pre></blockquote></p>
 429
 430 <p>I've extended kodi-stream program to take a video source as its
 431 first argument.  It can now handle direct video links, youtube links
 432 and 'desktop' to stream my desktop to Kodi.  It is almost like a
 433 Chromecast. :)</p>
 434
 435 <p>As usual, if you use Bitcoin and want to show your support of my
 436 activities, please send Bitcoin donations to my address
 437 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 438 </div>
 439       <div class="tags">
 440
 441
 442         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>.
 443
 444
 445       </div>
 446     </div>
 447     <div class="padding"></div>
 448
 449     <div class="entry">
 450       <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>
 451       <div class="date">30th August 2018</div>
 452       <div class="body"><p>It might seem obvious that software created using tax money should
 453 be available for everyone to use and improve.  Free Software
 454 Foundation Europe recentlystarted a campaign to help get more people
 455 to understand this, and I just signed the petition on
 456 <a href="https://publiccode.eu/">Public Money, Public Code</a> to help
 457 them. I hope you too will do the same.</p>
 458 </div>
 459       <div class="tags">
 460
 461
 462         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>.
 463
 464
 465       </div>
 466     </div>
 467     <div class="padding"></div>
 468
 469     <div class="entry">
 470       <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>
 471       <div class="date">13th August 2018</div>
 472       <div class="body"><p>A few days ago, I wondered if there are any privacy respecting
 473 health monitors and/or fitness trackers available for sale these days.
 474 I would like to buy one, but do not want to share my personal data
 475 with strangers, nor be forced to have a mobile phone to get data out
 476 of the unit.  I've received some ideas, and would like to share them
 477 with you.
 478
 479 One interesting data point was a pointer to a Free Software app for
 480 Android named
 481 <a href="https://github.com/Freeyourgadget/Gadgetbridge/">Gadgetbridge</a>.
 482 It provide cloudless collection and storing of data from a variety of
 483 trackers.  Its
 484 <a href="https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices">list
 485 of supported devices</a> is a good indicator for units where the
 486 protocol is fairly open, as it is obviously being handled by Free
 487 Software.  Other units are reportedly encrypting the collected
 488 information with their own public key, making sure only the vendor
 489 cloud service is able to extract data from the unit.  The people
 490 contacting me about Gadgetbirde said they were using
 491 <a href="https://us.amazfit.com/shop/bip?variant=336750">Amazfit
 492 Bip</a> and
 493 <a href="http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/">Xiaomi
 494 Band 3</a>.</p>
 495
 496 <p>I also got a suggestion to look at some of the units from Garmin.
 497 I was told their GPS watches can be connected via USB and show up as a
 498 USB storage device with
 499 <a href="https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html">Garmin
 500 FIT files</a> containing the collected measurements.  While
 501 proprietary, FIT files apparently can be read at least by
 502 <a href="https://www.gpsbabel.org">GPSBabel</a> and the
 503 <a href="https://apps.nextcloud.com/apps/gpxpod">GpxPod</a> Nextcloud
 504 app.  It is unclear to me if they can read step count and heart rate
 505 data.  The person I talked to was using a
 506 <a href="https://buy.garmin.com/en-US/US/p/564291">Garmin Forerunner
 507 935</a>, which is a fairly expensive unit.  I doubt it is worth it for
 508 a unit where the vendor clearly is trying its best to move from open
 509 to closed systems.  I still remember when Garmin dropped NMEA support
 510 in its GPSes.</p>
 511
 512 <p>A final idea was to build ones own unit, perhaps by basing it on a
 513 wearable hardware platforms like
 514 <a href="https://learn.adafruit.com/flora-geo-watch">the Flora Geo
 515 Watch</a>.  Sound like fun, but I had more money than time to spend on
 516 the topic, so I suspect it will have to wait for another time.</p>
 517
 518 <p>While I was working on tracking down links, I came across an
 519 inspiring TED talk by Dave Debronkart about
 520 <a href="https://archive.org/details/DavedeBronkart_2010X">being a
 521 e-patient</a>, and discovered the web site
 522 <a href="https://participatorymedicine.org/epatients/">Participatory
 523 Medicine</a>.  If you too want to track your own health and fitness
 524 without having information about your private life floating around on
 525 computers owned by others, I recommend checking it out.</p>
 526
 527 <p>As usual, if you use Bitcoin and want to show your support of my
 528 activities, please send Bitcoin donations to my address
 529 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 530 </div>
 531       <div class="tags">
 532
 533
 534         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 535
 536
 537       </div>
 538     </div>
 539     <div class="padding"></div>
 540
 541     <div class="entry">
 542       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html">Privacy respecting health monitor / fitness tracker?</a></div>
 543       <div class="date"> 7th August 2018</div>
 544       <div class="body"><p>Dear lazyweb,</p>
 545
 546 <p>I wonder, is there a fitness tracker / health monitor available for
 547 sale today that respect the users privacy?  With this I mean a
 548 watch/bracelet capable of measuring pulse rate and other
 549 fitness/health related values (and by all means, also the correct time
 550 and location if possible), which is <strong>only</strong> provided for
 551 me to extract/read from the unit with computer without a radio beacon
 552 and Internet connection.  In other words, it do not depend on a cell
 553 phone app, and do make the measurements available via other peoples
 554 computer (aka "the cloud").  The collected data should be available
 555 using only free software.  I'm not interested in depending on some
 556 non-free software that will leave me high and dry some time in the
 557 future.  I've been unable to find any such unit.  I would like to buy
 558 it.  The ones I have seen for sale here in Norway are proud to report
 559 that they share my health data with strangers (aka "cloud enabled").
 560 Is there an alternative?  I'm not interested in giving money to people
 561 requiring me to accept "privacy terms" to allow myself to measure my
 562 own health.</p>
 563
 564 <p>As usual, if you use Bitcoin and want to show your support of my
 565 activities, please send Bitcoin donations to my address
 566 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 567 </div>
 568       <div class="tags">
 569
 570
 571         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 572
 573
 574       </div>
 575     </div>
 576     <div class="padding"></div>
 577
 578     <div class="entry">
 579       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html">Sharing images with friends and family using RSS and EXIF/XMP metadata</a></div>
 580       <div class="date">31st July 2018</div>
 581       <div class="body"><p>For a while now, I have looked for a sensible way to share images
 582 with my family using a self hosted solution, as it is unacceptable to
 583 place images from my personal life under the control of strangers
 584 working for data hoarders like Google or Dropbox.  The last few days I
 585 have drafted an approach that might work out, and I would like to
 586 share it with you.  I would like to publish images on a server under
 587 my control, and point some Internet connected display units using some
 588 free and open standard to the images I published.  As my primary
 589 language is not limited to ASCII, I need to store metadata using
 590 UTF-8.  Many years ago, I hoped to find a digital photo frame capable
 591 of reading a RSS feed with image references (aka using the
 592 &lt;enclosure&gt; RSS tag), but was unable to find a current supplier
 593 of such frames.  In the end I gave up that approach.</p>
 594
 595 <p>Some months ago, I discovered that
 596 <a href="https://www.jwz.org/xscreensaver/">XScreensaver</a> is able to
 597 read images from a RSS feed, and used it to set up a screen saver on
 598 my home info screen, showing images from the Daily images feed from
 599 NASA.  This proved to work well.  More recently I discovered that
 600 <a href="https://kodi.tv">Kodi</a> (both using
 601 <a href="https://www.openelec.tv/">OpenELEC</a> and
 602 <a href="https://libreelec.tv">LibreELEC</a>) provide the
 603 <a href="https://github.com/grinsted/script.screensaver.feedreader">Feedreader</a>
 604 screen saver capable of reading a RSS feed with images and news.  For
 605 fun, I used it this summer to test Kodi on my parents TV by hooking up
 606 a Raspberry PI unit with LibreELEC, and wanted to provide them with a
 607 screen saver showing selected pictures from my selection.</p>
 608
 609 <p>Armed with motivation and a test photo frame, I set out to generate
 610 a RSS feed for the Kodi instance.  I adjusted my <a
 611 href="https://freedombox.org/">Freedombox</a> instance, created
 612 /var/www/html/privatepictures/, wrote a small Perl script to extract
 613 title and description metadata from the photo files and generate the
 614 RSS file.  I ended up using Perl instead of python, as the
 615 libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
 616 tags I ended up using, while python3-exif did not.  The relevant EXIF
 617 tags only support ASCII, so I had to find better alternatives.  XMP
 618 seem to have the support I need.</p>
 619
 620 <p>I am a bit unsure which EXIF/XMP tags to use, as I would like to
 621 use tags that can be easily added/updated using normal free software
 622 photo managing software.  I ended up using the tags set using this
 623 exiftool command, as these tags can also be set using digiKam:</p>
 624
 625 <blockquote><pre>
 626 exiftool -headline='The RSS image title' \
 627   -description='The RSS image description.' \
 628   -subject+=for-family photo.jpeg
 629 </pre></blockquote>
 630
 631 <p>I initially tried the "-title" and "keyword" tags, but they were
 632 invisible in digiKam, so I changed to "-headline" and "-subject".  I
 633 use the keyword/subject 'for-family' to flag that the photo should be
 634 shared with my family.  Images with this keyword set are located and
 635 copied into my Freedombox for the RSS generating script to find.</p>
 636
 637 <p>Are there better ways to do this?  Get in touch if you have better
 638 suggestions.</p>
 639
 640 <p>As usual, if you use Bitcoin and want to show your support of my
 641 activities, please send Bitcoin donations to my address
 642 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 643 </div>
 644       <div class="tags">
 645
 646
 647         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>.
 648
 649
 650       </div>
 651     </div>
 652     <div class="padding"></div>
 653
 654     <div class="entry">
 655       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">Simple streaming the Linux desktop to Kodi using GStreamer and RTP</a></div>
 656       <div class="date">12th July 2018</div>
 657       <div class="body"><p>Last night, I wrote
 658 <a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">a
 659 recipe to stream a Linux desktop using VLC to a instance of Kodi</a>.
 660 During the day I received valuable feedback, and thanks to the
 661 suggestions I have been able to rewrite the recipe into a much simpler
 662 approach requiring no setup at all.  It is a single script that take
 663 care of it all.</p>
 664
 665 <p>This new script uses GStreamer instead of VLC to capture the
 666 desktop and stream it to Kodi.  This fixed the video quality issue I
 667 saw initially.  It further removes the need to add a m3u file on the
 668 Kodi machine, as it instead connects to
 669 <a href="https://kodi.wiki/view/JSON-RPC_API/v8">the JSON-RPC API in
 670 Kodi</a> and simply ask Kodi to play from the stream created using
 671 GStreamer.  Streaming the desktop to Kodi now become trivial.  Copy
 672 the script below, run it with the DNS name or IP address of the kodi
 673 server to stream to as the only argument, and watch your screen show
 674 up on the Kodi screen.  Note, it depend on multicast on the local
 675 network, so if you need to stream outside the local network, the
 676 script must be modified.  Also note, I have no idea if audio work, as
 677 I only care about the picture part.</p>
 678
 679 <blockquote><pre>
 680 #!/bin/sh
 681 #
 682 # Stream the Linux desktop view to Kodi.  See
 683 # http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
 684 # for backgorund information.
 685
 686 # Make sure the stream is stopped in Kodi and the gstreamer process is
 687 # killed if something go wrong (for example if curl is unable to find the
 688 # kodi server).  Do the same when interrupting this script.
 689 kodicmd() {
 690     host="$1"
 691     cmd="$2"
 692     params="$3"
 693     curl --silent --header 'Content-Type: application/json' \
 694          --data-binary "{ \"id\": 1, \"jsonrpc\": \"2.0\", \"method\": \"$cmd\", \"params\": $params }" \
 695          "http://$host/jsonrpc"
 696 }
 697 cleanup() {
 698     if [ -n "$kodihost" ] ; then
 699         # Stop the playing when we end
 700         playerid=$(kodicmd "$kodihost" Player.GetActivePlayers "{}" |
 701                             jq .result[].playerid)
 702         kodicmd "$kodihost" Player.Stop "{ \"playerid\" : $playerid }" > /dev/null
 703     fi
 704     if [ "$gstpid" ] && kill -0 "$gstpid" >/dev/null 2>&1; then
 705         kill "$gstpid"
 706     fi
 707 }
 708 trap cleanup EXIT INT
 709
 710 if [ -n "$1" ]; then
 711     kodihost=$1
 712     shift
 713 else
 714     kodihost=kodi.local
 715 fi
 716
 717 mcast=239.255.0.1
 718 mcastport=1234
 719 mcastttl=1
 720
 721 pasrc=$(pactl list | grep -A2 'Source #' | grep 'Name: .*\.monitor$' | \
 722   cut -d" " -f2|head -1)
 723 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 724   videoconvert ! queue2 ! \
 725   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 726   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 727   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 728   udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
 729   pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
 730   > /dev/null 2>&1 &
 731 gstpid=$!
 732
 733 # Give stream a second to get going
 734 sleep 1
 735
 736 # Ask kodi to start streaming using its JSON-RPC API
 737 kodicmd "$kodihost" Player.Open \
 738         "{\"item\": { \"file\": \"udp://@$mcast:$mcastport\" } }" > /dev/null
 739
 740 # wait for gst to end
 741 wait "$gstpid"
 742 </pre></blockquote>
 743
 744 <p>I hope you find the approach useful.  I know I do.</p>
 745
 746 <p>As usual, if you use Bitcoin and want to show your support of my
 747 activities, please send Bitcoin donations to my address
 748 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 749 </div>
 750       <div class="tags">
 751
 752
 753         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>.
 754
 755
 756       </div>
 757     </div>
 758     <div class="padding"></div>
 759
 760     <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>
 761     <div id="sidebar">
 762
 763
 764
 765 <h2>Archive</h2>
 766 <ul>
 767
 768 <li>2018
 769 <ul>
 770
 771 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 772
 773 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 774
 775 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 776
 777 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 778
 779 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 780
 781 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 782
 783 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 784
 785 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 786
 787 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/10/">October (2)</a></li>
 788
 789 </ul></li>
 790
 791 <li>2017
 792 <ul>
 793
 794 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 795
 796 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 797
 798 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 799
 800 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 801
 802 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 803
 804 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 805
 806 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 807
 808 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 809
 810 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 811
 812 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 813
 814 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 815
 816 </ul></li>
 817
 818 <li>2016
 819 <ul>
 820
 821 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 822
 823 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 824
 825 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 826
 827 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 828
 829 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 830
 831 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 832
 833 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 834
 835 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 836
 837 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 838
 839 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 840
 841 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 842
 843 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 844
 845 </ul></li>
 846
 847 <li>2015
 848 <ul>
 849
 850 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 851
 852 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 853
 854 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 855
 856 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 857
 858 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 859
 860 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 861
 862 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 863
 864 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 865
 866 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 867
 868 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 869
 870 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 871
 872 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 873
 874 </ul></li>
 875
 876 <li>2014
 877 <ul>
 878
 879 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 880
 881 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 882
 883 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 884
 885 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 886
 887 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 888
 889 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 890
 891 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 892
 893 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 894
 895 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 896
 897 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 898
 899 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 900
 901 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 902
 903 </ul></li>
 904
 905 <li>2013
 906 <ul>
 907
 908 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 909
 910 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 911
 912 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 913
 914 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 915
 916 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 917
 918 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 919
 920 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 921
 922 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 923
 924 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 925
 926 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 927
 928 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 929
 930 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 931
 932 </ul></li>
 933
 934 <li>2012
 935 <ul>
 936
 937 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 938
 939 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 940
 941 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 942
 943 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 944
 945 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 946
 947 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 948
 949 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 950
 951 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 952
 953 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 954
 955 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 956
 957 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 958
 959 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 960
 961 </ul></li>
 962
 963 <li>2011
 964 <ul>
 965
 966 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 967
 968 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 969
 970 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 971
 972 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 973
 974 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 975
 976 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 977
 978 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 979
 980 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 981
 982 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 983
 984 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 985
 986 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 987
 988 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 989
 990 </ul></li>
 991
 992 <li>2010
 993 <ul>
 994
 995 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 996
 997 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 998
 999 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1000
1001 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1002
1003 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1004
1005 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1006
1007 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1008
1009 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1010
1011 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1012
1013 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1014
1015 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1016
1017 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1018
1019 </ul></li>
1020
1021 <li>2009
1022 <ul>
1023
1024 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1025
1026 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1027
1028 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1029
1030 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1031
1032 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1033
1034 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1035
1036 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1037
1038 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1039
1040 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1041
1042 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1043
1044 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1045
1046 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1047
1048 </ul></li>
1049
1050 <li>2008
1051 <ul>
1052
1053 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1054
1055 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1056
1057 </ul></li>
1058
1059 </ul>
1060
1061
1062
1063 <h2>Tags</h2>
1064 <ul>
1065
1066  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
1067
1068  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1069
1070  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1071
1072  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1073
1074  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (10)</a></li>
1075
1076  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
1077
1078  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1079
1080  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1081
1082  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (163)</a></li>
1083
1084  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
1085
1086  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
1087
1088  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1089
1090  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
1091
1092  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (25)</a></li>
1093
1094  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1095
1096  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (387)</a></li>
1097
1098  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1099
1100  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (13)</a></li>
1101
1102  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (32)</a></li>
1103
1104  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1105
1106  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1107
1108  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1109
1110  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1111
1112  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
1113
1114  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
1115
1116  <li><a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi (3)</a></li>
1117
1118  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1119
1120  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
1121
1122  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1123
1124  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1125
1126  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1127
1128  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1129
1130  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
1131
1132  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (10)</a></li>
1133
1134  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
1135
1136  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (190)</a></li>
1137
1138  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
1139
1140  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1141
1142  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (72)</a></li>
1143
1144  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
1145
1146  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1147
1148  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1149
1150  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1151
1152  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1153
1154  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
1155
1156  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1157
1158  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
1159
1160  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1161
1162  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (55)</a></li>
1163
1164  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1165
1166  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1167
1168  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
1169
1170  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
1171
1172  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
1173
1174  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
1175
1176  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
1177
1178  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1179
1180  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1181
1182  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (12)</a></li>
1183
1184  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (68)</a></li>
1185
1186  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1187
1188  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
1189
1190 </ul>
1191
1192
1193     </div>
1194     <p style="text-align: right">
1195  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1196 </p>
1197
1198   </body>
1199 </html>