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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/Automatic_Google_Drive_sync_using_grive_in_Debian.html">Automatic Google Drive sync using grive in Debian</a></div>
  24       <div class="date"> 4th October 2018</div>
  25       <div class="body"><p>A few days, I rescued a Windows victim over to Debian.  To try to
  26 rescue the remains, I helped set up automatic sync with Google Drive.
  27 I did not find any sensible Debian package handling this
  28 automatically, so I rebuild the grive2 source from
  29 <a href="http://www.webupd8.org/">the Ubuntu UPD8 PPA</a> to do the
  30 task and added a autostart desktop entry and a small shell script to
  31 run in the background while the user is logged in to do the sync.
  32 Here is a sketch of the setup for future reference.</p>
  33
  34 <p>I first created <tt>~/googledrive</tt>, entered the directory and
  35 ran '<tt>grive -a</tt>' to authenticate the machine/user.  Next, I
  36 created a autostart hook in <tt>~/.config/autostart/grive.desktop</tt>
  37 to start the sync when the user log in:</p>
  38
  39 <p><blockquote><pre>
  40 [Desktop Entry]
  41 Name=Google drive autosync
  42 Type=Application
  43 Exec=/home/user/bin/grive-sync
  44 </pre></blockquote></p>
  45
  46 <p>Finally, I wrote the <tt>~/bin/grive-sync</tt> script to sync
  47 ~/googledrive/ with the files in Google Drive.</p>
  48
  49 <p><blockquote><pre>
  50 #!/bin/sh
  51 set -e
  52 cd ~/
  53 cleanup() {
  54     if [ "$syncpid" ] ; then
  55         kill $syncpid
  56     fi
  57 }
  58 trap cleanup EXIT INT QUIT
  59 /usr/lib/grive/grive-sync.sh listen googledrive 2>&1 | sed "s%^%$0:%" &
  60 syncpdi=$!
  61 while true; do
  62     if ! xhost >/dev/null 2>&1 ; then
  63         echo "no DISPLAY, exiting as the user probably logged out"
  64         exit 1
  65     fi
  66     if [ ! -e /run/user/1000/grive-sync.sh_googledrive ] ; then
  67         /usr/lib/grive/grive-sync.sh sync googledrive
  68     fi
  69     sleep 300
  70 done 2>&1 | sed "s%^%$0:%"
  71 </pre></blockquote></p>
  72
  73 <p>Feel free to use the setup if you want.  It can be assumed to be
  74 GNU GPL v2 licensed (or any later version, at your leisure), but I
  75 doubt this code is possible to claim copyright on.</p>
  76
  77 <p>As usual, if you use Bitcoin and want to show your support of my
  78 activities, please send Bitcoin donations to my address
  79 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  80 </div>
  81       <div class="tags">
  82
  83
  84         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>.
  85
  86
  87       </div>
  88     </div>
  89     <div class="padding"></div>
  90
  91     <div class="entry">
  92       <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>
  93       <div class="date">29th September 2018</div>
  94       <div class="body"><p>It would come as no surprise to anyone that I am interested in
  95 bitcoins and virtual currencies.  I've been keeping an eye on virtual
  96 currencies for many years, and it is part of the reason a few months
  97 ago, I started writing a python library for collecting currency
  98 exchange rates and trade on virtual currency exchanges.  I decided to
  99 name the end result valutakrambod, which perhaps can be translated to
 100 small currency shop.</p>
 101
 102 <p>The library uses the tornado python library to handle HTTP and
 103 websocket connections, and provide a asynchronous system for
 104 connecting to and tracking several services.  The code is available
 105 from
 106 <a href="http://github.com/petterreinholdtsen/valutakrambod">github</a>.</p>
 107
 108 </p>There are two example clients of the library.  One is very simple and
 109 list every updated buy/sell price received from the various services.
 110 This code is started by running bin/btc-rates and call the client code
 111 in valutakrambod/client.py.  The simple client look like this:</p>
 112
 113 <p><blockquote><pre>
 114 import functools
 115 import tornado.ioloop
 116 import valutakrambod
 117 class SimpleClient(object):
 118     def __init__(self):
 119         self.services = []
 120         self.streams = []
 121         pass
 122     def newdata(self, service, pair, changed):
 123         print("%-15s %s-%s: %8.3f %8.3f" % (
 124             service.servicename(),
 125             pair[0],
 126             pair[1],
 127             service.rates[pair]['ask'],
 128             service.rates[pair]['bid'])
 129         )
 130     async def refresh(self, service):
 131         await service.fetchRates(service.wantedpairs)
 132     def run(self):
 133         self.ioloop = tornado.ioloop.IOLoop.current()
 134         self.services = valutakrambod.service.knownServices()
 135         for e in self.services:
 136             service = e()
 137             service.subscribe(self.newdata)
 138             stream = service.websocket()
 139             if stream:
 140                 self.streams.append(stream)
 141             else:
 142                 # Fetch information from non-streaming services immediately
 143                 self.ioloop.call_later(len(self.services),
 144                                        functools.partial(self.refresh, service))
 145                 # as well as regularly
 146                 service.periodicUpdate(60)
 147         for stream in self.streams:
 148             stream.connect()
 149         try:
 150             self.ioloop.start()
 151         except KeyboardInterrupt:
 152             print("Interrupted by keyboard, closing all connections.")
 153             pass
 154         for stream in self.streams:
 155             stream.close()
 156 </pre></blockquote></p>
 157
 158 <p>The library client loops over all known "public" services,
 159 initialises it, subscribes to any updates from the service, checks and
 160 activates websocket streaming if the service provide it, and if no
 161 streaming is supported, fetches information from the service and sets
 162 up a periodic update every 60 seconds.  The output from this client
 163 can look like this:</p>
 164
 165 <p><blockquote><pre>
 166 Bl3p            BTC-EUR: 5687.110 5653.690
 167 Bl3p            BTC-EUR: 5687.110 5653.690
 168 Bl3p            BTC-EUR: 5687.110 5653.690
 169 Hitbtc          BTC-USD: 6594.560 6593.690
 170 Hitbtc          BTC-USD: 6594.560 6593.690
 171 Bl3p            BTC-EUR: 5687.110 5653.690
 172 Hitbtc          BTC-USD: 6594.570 6593.690
 173 Bitstamp        EUR-USD:    1.159    1.154
 174 Hitbtc          BTC-USD: 6594.570 6593.690
 175 Hitbtc          BTC-USD: 6594.580 6593.690
 176 Hitbtc          BTC-USD: 6594.580 6593.690
 177 Hitbtc          BTC-USD: 6594.580 6593.690
 178 Bl3p            BTC-EUR: 5687.110 5653.690
 179 Paymium         BTC-EUR: 5680.000 5620.240
 180 </pre></blockquote></p>
 181
 182 <p>The exchange order book is tracked in addition to the best buy/sell
 183 price, for those that need to know the details.</p>
 184
 185 <p>The other example client is focusing on providing a curses view
 186 with updated buy/sell prices as soon as they are received from the
 187 services.  This code is located in bin/btc-rates-curses and activated
 188 by using the '-c' argument.  Without the argument the "curses" output
 189 is printed without using curses, which is useful for debugging.  The
 190 curses view look like this:</p>
 191
 192 <p><blockquote><pre>
 193            Name Pair   Bid         Ask         Spr    Ftcd    Age
 194  BitcoinsNorway BTCEUR   5591.8400   5711.0800   2.1%   16    nan     60
 195        Bitfinex BTCEUR   5671.0000   5671.2000   0.0%   16     22     59
 196         Bitmynt BTCEUR   5580.8000   5807.5200   3.9%   16     41     60
 197          Bitpay BTCEUR   5663.2700         nan   nan%   15    nan     60
 198        Bitstamp BTCEUR   5664.8400   5676.5300   0.2%    0      1      1
 199            Bl3p BTCEUR   5653.6900   5684.9400   0.5%    0    nan     19
 200        Coinbase BTCEUR   5600.8200   5714.9000   2.0%   15    nan    nan
 201          Kraken BTCEUR   5670.1000   5670.2000   0.0%   14     17     60
 202         Paymium BTCEUR   5620.0600   5680.0000   1.1%    1   7515    nan
 203  BitcoinsNorway BTCNOK  52898.9700  54034.6100   2.1%   16    nan     60
 204         Bitmynt BTCNOK  52960.3200  54031.1900   2.0%   16     41     60
 205          Bitpay BTCNOK  53477.7833         nan   nan%   16    nan     60
 206        Coinbase BTCNOK  52990.3500  54063.0600   2.0%   15    nan    nan
 207         MiraiEx BTCNOK  52856.5300  54100.6000   2.3%   16    nan    nan
 208  BitcoinsNorway BTCUSD   6495.5300   6631.5400   2.1%   16    nan     60
 209        Bitfinex BTCUSD   6590.6000   6590.7000   0.0%   16     23     57
 210          Bitpay BTCUSD   6564.1300         nan   nan%   15    nan     60
 211        Bitstamp BTCUSD   6561.1400   6565.6200   0.1%    0      2      1
 212        Coinbase BTCUSD   6504.0600   6635.9700   2.0%   14    nan    117
 213          Gemini BTCUSD   6567.1300   6573.0700   0.1%   16     89    nan
 214          Hitbtc+BTCUSD   6592.6200   6594.2100   0.0%    0      0      0
 215          Kraken BTCUSD   6565.2000   6570.9000   0.1%   15     17     58
 216   Exchangerates EURNOK      9.4665      9.4665   0.0%   16 107789    nan
 217      Norgesbank EURNOK      9.4665      9.4665   0.0%   16 107789    nan
 218        Bitstamp EURUSD      1.1537      1.1593   0.5%    4      5      1
 219   Exchangerates EURUSD      1.1576      1.1576   0.0%   16 107789    nan
 220  BitcoinsNorway LTCEUR      1.0000     49.0000  98.0%   16    nan    nan
 221  BitcoinsNorway LTCNOK    492.4800    503.7500   2.2%   16    nan     60
 222  BitcoinsNorway LTCUSD      1.0221     49.0000  97.9%   15    nan    nan
 223      Norgesbank USDNOK      8.1777      8.1777   0.0%   16 107789    nan
 224 </pre></blockquote></p>
 225
 226 <p>The code for this client is too complex for a simple blog post, so
 227 you will have to check out the git repository to figure out how it
 228 work.  What I can tell is how the three last numbers on each line
 229 should be interpreted.  The first is how many seconds ago information
 230 was received from the service.  The second is how long ago, according
 231 to the service, the provided information was updated.  The last is an
 232 estimate on how often the buy/sell values change.</p>
 233
 234 <p>If you find this library useful, or would like to improve it, I
 235 would love to hear from you.  Note that for some of the services I've
 236 implemented a trading API.  It might be the topic of a future blog
 237 post.</p>
 238
 239 <p>As usual, if you use Bitcoin and want to show your support of my
 240 activities, please send Bitcoin donations to my address
 241 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 242 </div>
 243       <div class="tags">
 244
 245
 246         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>.
 247
 248
 249       </div>
 250     </div>
 251     <div class="padding"></div>
 252
 253     <div class="entry">
 254       <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>
 255       <div class="date">24th September 2018</div>
 256       <div class="body"><p>Back in February, I got curious to see
 257 <a href="http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html">if
 258 VLC now supported Bittorrent streaming</a>.  It did not, despite the
 259 fact that the idea and code to handle such streaming had been floating
 260 around for years.  I did however find
 261 <a href="https://github.com/johang/vlc-bittorrent">a standalone plugin
 262 for VLC</a> to do it, and half a year later I decided to wrap up the
 263 plugin and get it into Debian.  I uploaded it to NEW a few days ago,
 264 and am very happy to report that it
 265 <a href="https://tracker.debian.org/pkg/vlc-plugin-bittorrent">entered
 266 Debian</a> a few hours ago, and should be available in Debian/Unstable
 267 tomorrow, and Debian/Testing in a few days.</p>
 268
 269 <p>With the vlc-plugin-bittorrent package installed you should be able
 270 to stream videos using a simple call to</p>
 271
 272 <p><blockquote><pre>
 273 vlc https://archive.org/download/TheGoat/TheGoat_archive.torrent
 274 </pre></blockquote></p>
 275
 276 </p>It can handle magnet links too.  Now if only native vlc had
 277 bittorrent support.  Then a lot more would be helping each other to
 278 share public domain and creative commons movies.  The plugin need some
 279 stability work with seeking and picking the right file in a torrent
 280 with many files, but is already usable.  Please note that the plugin
 281 is not removing downloaded files when vlc is stopped, so it can fill
 282 up your disk if you are not careful.  Have fun. :)</p>
 283
 284 <p>I would love to get help maintaining this package.  Get in touch if
 285 you are interested.</p>
 286
 287 <p>As usual, if you use Bitcoin and want to show your support of my
 288 activities, please send Bitcoin donations to my address
 289 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 290 </div>
 291       <div class="tags">
 292
 293
 294         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>.
 295
 296
 297       </div>
 298     </div>
 299     <div class="padding"></div>
 300
 301     <div class="entry">
 302       <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>
 303       <div class="date"> 2nd September 2018</div>
 304       <div class="body"><p>I continue to explore my Kodi installation, and today I wanted to
 305 tell it to play a youtube URL I received in a chat, without having to
 306 insert search terms using the on-screen keyboard.  After searching the
 307 web for API access to the Youtube plugin and testing a bit, I managed
 308 to find a recipe that worked.  If you got a kodi instance with its API
 309 available from http://kodihost/jsonrpc, you can try the following to
 310 have check out a nice cover band.</p>
 311
 312 <p><blockquote><pre>curl --silent --header 'Content-Type: application/json' \
 313   --data-binary '{ "id": 1, "jsonrpc": "2.0", "method": "Player.Open",
 314   "params": {"item": { "file":
 315   "plugin://plugin.video.youtube/play/?video_id=LuRGVM9O0qg" } } }' \
 316   http://projector.local/jsonrpc</pre></blockquote></p>
 317
 318 <p>I've extended kodi-stream program to take a video source as its
 319 first argument.  It can now handle direct video links, youtube links
 320 and 'desktop' to stream my desktop to Kodi.  It is almost like a
 321 Chromecast. :)</p>
 322
 323 <p>As usual, if you use Bitcoin and want to show your support of my
 324 activities, please send Bitcoin donations to my address
 325 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 326 </div>
 327       <div class="tags">
 328
 329
 330         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>.
 331
 332
 333       </div>
 334     </div>
 335     <div class="padding"></div>
 336
 337     <div class="entry">
 338       <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>
 339       <div class="date">30th August 2018</div>
 340       <div class="body"><p>It might seem obvious that software created using tax money should
 341 be available for everyone to use and improve.  Free Software
 342 Foundation Europe recentlystarted a campaign to help get more people
 343 to understand this, and I just signed the petition on
 344 <a href="https://publiccode.eu/">Public Money, Public Code</a> to help
 345 them. I hope you too will do the same.</p>
 346 </div>
 347       <div class="tags">
 348
 349
 350         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>.
 351
 352
 353       </div>
 354     </div>
 355     <div class="padding"></div>
 356
 357     <div class="entry">
 358       <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>
 359       <div class="date">13th August 2018</div>
 360       <div class="body"><p>A few days ago, I wondered if there are any privacy respecting
 361 health monitors and/or fitness trackers available for sale these days.
 362 I would like to buy one, but do not want to share my personal data
 363 with strangers, nor be forced to have a mobile phone to get data out
 364 of the unit.  I've received some ideas, and would like to share them
 365 with you.
 366
 367 One interesting data point was a pointer to a Free Software app for
 368 Android named
 369 <a href="https://github.com/Freeyourgadget/Gadgetbridge/">Gadgetbridge</a>.
 370 It provide cloudless collection and storing of data from a variety of
 371 trackers.  Its
 372 <a href="https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices">list
 373 of supported devices</a> is a good indicator for units where the
 374 protocol is fairly open, as it is obviously being handled by Free
 375 Software.  Other units are reportedly encrypting the collected
 376 information with their own public key, making sure only the vendor
 377 cloud service is able to extract data from the unit.  The people
 378 contacting me about Gadgetbirde said they were using
 379 <a href="https://us.amazfit.com/shop/bip?variant=336750">Amazfit
 380 Bip</a> and
 381 <a href="http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/">Xiaomi
 382 Band 3</a>.</p>
 383
 384 <p>I also got a suggestion to look at some of the units from Garmin.
 385 I was told their GPS watches can be connected via USB and show up as a
 386 USB storage device with
 387 <a href="https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html">Garmin
 388 FIT files</a> containing the collected measurements.  While
 389 proprietary, FIT files apparently can be read at least by
 390 <a href="https://www.gpsbabel.org">GPSBabel</a> and the
 391 <a href="https://apps.nextcloud.com/apps/gpxpod">GpxPod</a> Nextcloud
 392 app.  It is unclear to me if they can read step count and heart rate
 393 data.  The person I talked to was using a
 394 <a href="https://buy.garmin.com/en-US/US/p/564291">Garmin Forerunner
 395 935</a>, which is a fairly expensive unit.  I doubt it is worth it for
 396 a unit where the vendor clearly is trying its best to move from open
 397 to closed systems.  I still remember when Garmin dropped NMEA support
 398 in its GPSes.</p>
 399
 400 <p>A final idea was to build ones own unit, perhaps by basing it on a
 401 wearable hardware platforms like
 402 <a href="https://learn.adafruit.com/flora-geo-watch">the Flora Geo
 403 Watch</a>.  Sound like fun, but I had more money than time to spend on
 404 the topic, so I suspect it will have to wait for another time.</p>
 405
 406 <p>While I was working on tracking down links, I came across an
 407 inspiring TED talk by Dave Debronkart about
 408 <a href="https://archive.org/details/DavedeBronkart_2010X">being a
 409 e-patient</a>, and discovered the web site
 410 <a href="https://participatorymedicine.org/epatients/">Participatory
 411 Medicine</a>.  If you too want to track your own health and fitness
 412 without having information about your private life floating around on
 413 computers owned by others, I recommend checking it out.</p>
 414
 415 <p>As usual, if you use Bitcoin and want to show your support of my
 416 activities, please send Bitcoin donations to my address
 417 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 418 </div>
 419       <div class="tags">
 420
 421
 422         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 423
 424
 425       </div>
 426     </div>
 427     <div class="padding"></div>
 428
 429     <div class="entry">
 430       <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>
 431       <div class="date"> 7th August 2018</div>
 432       <div class="body"><p>Dear lazyweb,</p>
 433
 434 <p>I wonder, is there a fitness tracker / health monitor available for
 435 sale today that respect the users privacy?  With this I mean a
 436 watch/bracelet capable of measuring pulse rate and other
 437 fitness/health related values (and by all means, also the correct time
 438 and location if possible), which is <strong>only</strong> provided for
 439 me to extract/read from the unit with computer without a radio beacon
 440 and Internet connection.  In other words, it do not depend on a cell
 441 phone app, and do make the measurements available via other peoples
 442 computer (aka "the cloud").  The collected data should be available
 443 using only free software.  I'm not interested in depending on some
 444 non-free software that will leave me high and dry some time in the
 445 future.  I've been unable to find any such unit.  I would like to buy
 446 it.  The ones I have seen for sale here in Norway are proud to report
 447 that they share my health data with strangers (aka "cloud enabled").
 448 Is there an alternative?  I'm not interested in giving money to people
 449 requiring me to accept "privacy terms" to allow myself to measure my
 450 own health.</p>
 451
 452 <p>As usual, if you use Bitcoin and want to show your support of my
 453 activities, please send Bitcoin donations to my address
 454 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 455 </div>
 456       <div class="tags">
 457
 458
 459         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 460
 461
 462       </div>
 463     </div>
 464     <div class="padding"></div>
 465
 466     <div class="entry">
 467       <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>
 468       <div class="date">31st July 2018</div>
 469       <div class="body"><p>For a while now, I have looked for a sensible way to share images
 470 with my family using a self hosted solution, as it is unacceptable to
 471 place images from my personal life under the control of strangers
 472 working for data hoarders like Google or Dropbox.  The last few days I
 473 have drafted an approach that might work out, and I would like to
 474 share it with you.  I would like to publish images on a server under
 475 my control, and point some Internet connected display units using some
 476 free and open standard to the images I published.  As my primary
 477 language is not limited to ASCII, I need to store metadata using
 478 UTF-8.  Many years ago, I hoped to find a digital photo frame capable
 479 of reading a RSS feed with image references (aka using the
 480 &lt;enclosure&gt; RSS tag), but was unable to find a current supplier
 481 of such frames.  In the end I gave up that approach.</p>
 482
 483 <p>Some months ago, I discovered that
 484 <a href="https://www.jwz.org/xscreensaver/">XScreensaver</a> is able to
 485 read images from a RSS feed, and used it to set up a screen saver on
 486 my home info screen, showing images from the Daily images feed from
 487 NASA.  This proved to work well.  More recently I discovered that
 488 <a href="https://kodi.tv">Kodi</a> (both using
 489 <a href="https://www.openelec.tv/">OpenELEC</a> and
 490 <a href="https://libreelec.tv">LibreELEC</a>) provide the
 491 <a href="https://github.com/grinsted/script.screensaver.feedreader">Feedreader</a>
 492 screen saver capable of reading a RSS feed with images and news.  For
 493 fun, I used it this summer to test Kodi on my parents TV by hooking up
 494 a Raspberry PI unit with LibreELEC, and wanted to provide them with a
 495 screen saver showing selected pictures from my selection.</p>
 496
 497 <p>Armed with motivation and a test photo frame, I set out to generate
 498 a RSS feed for the Kodi instance.  I adjusted my <a
 499 href="https://freedombox.org/">Freedombox</a> instance, created
 500 /var/www/html/privatepictures/, wrote a small Perl script to extract
 501 title and description metadata from the photo files and generate the
 502 RSS file.  I ended up using Perl instead of python, as the
 503 libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
 504 tags I ended up using, while python3-exif did not.  The relevant EXIF
 505 tags only support ASCII, so I had to find better alternatives.  XMP
 506 seem to have the support I need.</p>
 507
 508 <p>I am a bit unsure which EXIF/XMP tags to use, as I would like to
 509 use tags that can be easily added/updated using normal free software
 510 photo managing software.  I ended up using the tags set using this
 511 exiftool command, as these tags can also be set using digiKam:</p>
 512
 513 <blockquote><pre>
 514 exiftool -headline='The RSS image title' \
 515   -description='The RSS image description.' \
 516   -subject+=for-family photo.jpeg
 517 </pre></blockquote>
 518
 519 <p>I initially tried the "-title" and "keyword" tags, but they were
 520 invisible in digiKam, so I changed to "-headline" and "-subject".  I
 521 use the keyword/subject 'for-family' to flag that the photo should be
 522 shared with my family.  Images with this keyword set are located and
 523 copied into my Freedombox for the RSS generating script to find.</p>
 524
 525 <p>Are there better ways to do this?  Get in touch if you have better
 526 suggestions.</p>
 527
 528 <p>As usual, if you use Bitcoin and want to show your support of my
 529 activities, please send Bitcoin donations to my address
 530 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 531 </div>
 532       <div class="tags">
 533
 534
 535         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>.
 536
 537
 538       </div>
 539     </div>
 540     <div class="padding"></div>
 541
 542     <div class="entry">
 543       <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>
 544       <div class="date">12th July 2018</div>
 545       <div class="body"><p>Last night, I wrote
 546 <a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">a
 547 recipe to stream a Linux desktop using VLC to a instance of Kodi</a>.
 548 During the day I received valuable feedback, and thanks to the
 549 suggestions I have been able to rewrite the recipe into a much simpler
 550 approach requiring no setup at all.  It is a single script that take
 551 care of it all.</p>
 552
 553 <p>This new script uses GStreamer instead of VLC to capture the
 554 desktop and stream it to Kodi.  This fixed the video quality issue I
 555 saw initially.  It further removes the need to add a m3u file on the
 556 Kodi machine, as it instead connects to
 557 <a href="https://kodi.wiki/view/JSON-RPC_API/v8">the JSON-RPC API in
 558 Kodi</a> and simply ask Kodi to play from the stream created using
 559 GStreamer.  Streaming the desktop to Kodi now become trivial.  Copy
 560 the script below, run it with the DNS name or IP address of the kodi
 561 server to stream to as the only argument, and watch your screen show
 562 up on the Kodi screen.  Note, it depend on multicast on the local
 563 network, so if you need to stream outside the local network, the
 564 script must be modified.  Also note, I have no idea if audio work, as
 565 I only care about the picture part.</p>
 566
 567 <blockquote><pre>
 568 #!/bin/sh
 569 #
 570 # Stream the Linux desktop view to Kodi.  See
 571 # http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
 572 # for backgorund information.
 573
 574 # Make sure the stream is stopped in Kodi and the gstreamer process is
 575 # killed if something go wrong (for example if curl is unable to find the
 576 # kodi server).  Do the same when interrupting this script.
 577 kodicmd() {
 578     host="$1"
 579     cmd="$2"
 580     params="$3"
 581     curl --silent --header 'Content-Type: application/json' \
 582          --data-binary "{ \"id\": 1, \"jsonrpc\": \"2.0\", \"method\": \"$cmd\", \"params\": $params }" \
 583          "http://$host/jsonrpc"
 584 }
 585 cleanup() {
 586     if [ -n "$kodihost" ] ; then
 587         # Stop the playing when we end
 588         playerid=$(kodicmd "$kodihost" Player.GetActivePlayers "{}" |
 589                             jq .result[].playerid)
 590         kodicmd "$kodihost" Player.Stop "{ \"playerid\" : $playerid }" > /dev/null
 591     fi
 592     if [ "$gstpid" ] && kill -0 "$gstpid" >/dev/null 2>&1; then
 593         kill "$gstpid"
 594     fi
 595 }
 596 trap cleanup EXIT INT
 597
 598 if [ -n "$1" ]; then
 599     kodihost=$1
 600     shift
 601 else
 602     kodihost=kodi.local
 603 fi
 604
 605 mcast=239.255.0.1
 606 mcastport=1234
 607 mcastttl=1
 608
 609 pasrc=$(pactl list | grep -A2 'Source #' | grep 'Name: .*\.monitor$' | \
 610   cut -d" " -f2|head -1)
 611 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 612   videoconvert ! queue2 ! \
 613   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 614   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 615   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 616   udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
 617   pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
 618   > /dev/null 2>&1 &
 619 gstpid=$!
 620
 621 # Give stream a second to get going
 622 sleep 1
 623
 624 # Ask kodi to start streaming using its JSON-RPC API
 625 kodicmd "$kodihost" Player.Open \
 626         "{\"item\": { \"file\": \"udp://@$mcast:$mcastport\" } }" > /dev/null
 627
 628 # wait for gst to end
 629 wait "$gstpid"
 630 </pre></blockquote>
 631
 632 <p>I hope you find the approach useful.  I know I do.</p>
 633
 634 <p>As usual, if you use Bitcoin and want to show your support of my
 635 activities, please send Bitcoin donations to my address
 636 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 637 </div>
 638       <div class="tags">
 639
 640
 641         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>.
 642
 643
 644       </div>
 645     </div>
 646     <div class="padding"></div>
 647
 648     <div class="entry">
 649       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">Streaming the Linux desktop to Kodi using VLC and RTSP</a></div>
 650       <div class="date">12th July 2018</div>
 651       <div class="body"><p>PS: See
 652 <ahref="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">the
 653 followup post</a> for a even better approach.</p>
 654
 655 <p>A while back, I was asked by a friend how to stream the desktop to
 656 my projector connected to Kodi.  I sadly had to admit that I had no
 657 idea, as it was a task I never had tried.  Since then, I have been
 658 looking for a way to do so, preferable without much extra software to
 659 install on either side.  Today I found a way that seem to kind of
 660 work.  Not great, but it is a start.</p>
 661
 662 <p>I had a look at several approaches, for example
 663 <a href="https://github.com/mfoetsch/dlna_live_streaming">using uPnP
 664 DLNA as described in 2011</a>, but it required a uPnP server, fuse and
 665 local storage enough to store the stream locally.  This is not going
 666 to work well for me, lacking enough free space, and it would
 667 impossible for my friend to get working.</p>
 668
 669 <p>Next, it occurred to me that perhaps I could use VLC to create a
 670 video stream that Kodi could play.  Preferably using
 671 broadcast/multicast, to avoid having to change any setup on the Kodi
 672 side when starting such stream.  Unfortunately, the only recipe I
 673 could find using multicast used the rtp protocol, and this protocol
 674 seem to not be supported by Kodi.</p>
 675
 676 <p>On the other hand, the rtsp protocol is working!  Unfortunately I
 677 have to specify the IP address of the streaming machine in both the
 678 sending command and the file on the Kodi server.  But it is showing my
 679 desktop, and thus allow us to have a shared look on the big screen at
 680 the programs I work on.</p>
 681
 682 <p>I did not spend much time investigating codeces.  I combined the
 683 rtp and rtsp recipes from
 684 <a href="https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/">the
 685 VLC Streaming HowTo/Command Line Examples</a>, and was able to get
 686 this working on the desktop/streaming end.</p>
 687
 688 <blockquote><pre>
 689 vlc screen:// --sout \
 690   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}'
 691 </pre></blockquote>
 692
 693 <p>I ssh-ed into my Kodi box and created a file like this with the
 694 same IP address:</p>
 695
 696 <blockquote><pre>
 697 echo rtsp://192.168.11.4:8080/test.sdp \
 698   > /storage/videos/screenstream.m3u
 699 </pre></blockquote>
 700
 701 <p>Note the 192.168.11.4 IP address is my desktops IP address.  As far
 702 as I can tell the IP must be hardcoded for this to work.  In other
 703 words, if someone elses machine is going to do the steaming, you have
 704 to update screenstream.m3u on the Kodi machine and adjust the vlc
 705 recipe.  To get started, locate the file in Kodi and select the m3u
 706 file while the VLC stream is running.  The desktop then show up in my
 707 big screen. :)</p>
 708
 709 <p>When using the same technique to stream a video file with audio,
 710 the audio quality is really bad.  No idea if the problem is package
 711 loss or bad parameters for the transcode.  I do not know VLC nor Kodi
 712 enough to tell.</p>
 713
 714 <p><strong>Update 2018-07-12</strong>: Johannes Schauer send me a few
 715 succestions and reminded me about an important step.  The "screen:"
 716 input source is only available once the vlc-plugin-access-extra
 717 package is installed on Debian.  Without it, you will see this error
 718 message: "VLC is unable to open the MRL 'screen://'.  Check the log
 719 for details."  He further found that it is possible to drop some parts
 720 of the VLC command line to reduce the amount of hardcoded information.
 721 It is also useful to consider using cvlc to avoid having the VLC
 722 window in the desktop view.  In sum, this give us this command line on
 723 the source end
 724
 725 <blockquote><pre>
 726 cvlc screen:// --sout \
 727   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}'
 728 </pre></blockquote>
 729
 730 <p>and this on the Kodi end<p>
 731
 732 <blockquote><pre>
 733 echo rtsp://192.168.11.4:8080/ \
 734   > /storage/videos/screenstream.m3u
 735 </pre></blockquote>
 736
 737 <p>Still bad image quality, though.  But I did discover that streaming
 738 a DVD using dvdsimple:///dev/dvd as the source had excellent video and
 739 audio quality, so I guess the issue is in the input or transcoding
 740 parts, not the rtsp part.  I've tried to change the vb and ab
 741 parameters to use more bandwidth, but it did not make a
 742 difference.</p>
 743
 744 <p>I further received a suggestion from Einar Haraldseid to try using
 745 gstreamer instead of VLC, and this proved to work great!  He also
 746 provided me with the trick to get Kodi to use a multicast stream as
 747 its source.  By using this monstrous oneliner, I can stream my desktop
 748 with good video quality in reasonable framerate to the 239.255.0.1
 749 multicast address on port 1234:
 750
 751 <blockquote><pre>
 752 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 753   videoconvert ! queue2 ! \
 754   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 755   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 756   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 757   udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
 758   pulsesrc device=$(pactl list | grep -A2 'Source #' | \
 759     grep 'Name: .*\.monitor$' |  cut -d" " -f2|head -1) ! \
 760   audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
 761 </pre></blockquote>
 762
 763 <p>and this on the Kodi end<p>
 764
 765 <blockquote><pre>
 766 echo udp://@239.255.0.1:1234 \
 767   > /storage/videos/screenstream.m3u
 768 </pre></blockquote>
 769
 770 <p>Note the trick to pick a valid pulseaudio source.  It might not
 771 pick the one you need.  This approach will of course lead to trouble
 772 if more than one source uses the same multicast port and address.
 773 Note the ttl-mc=1 setting, which limit the multicast packages to the
 774 local network.  If the value is increased, your screen will be
 775 broadcasted further, one network "hop" for each increase (read up on
 776 multicast to learn more. :)!</p>
 777
 778 <p>Having cracked how to get Kodi to receive multicast streams, I
 779 could use this VLC command to stream to the same multicast address.
 780 The image quality is way better than the rtsp approach, but gstreamer
 781 seem to be doing a better job.</p>
 782
 783 <blockquote><pre>
 784 cvlc screen:// --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}'
 785 </pre></blockquote>
 786
 787 <p>As usual, if you use Bitcoin and want to show your support of my
 788 activities, please send Bitcoin donations to my address
 789 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 790 </div>
 791       <div class="tags">
 792
 793
 794         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>.
 795
 796
 797       </div>
 798     </div>
 799     <div class="padding"></div>
 800
 801     <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>
 802     <div id="sidebar">
 803
 804
 805
 806 <h2>Archive</h2>
 807 <ul>
 808
 809 <li>2018
 810 <ul>
 811
 812 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 813
 814 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 815
 816 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 817
 818 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 819
 820 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 821
 822 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 823
 824 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 825
 826 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 827
 828 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/10/">October (1)</a></li>
 829
 830 </ul></li>
 831
 832 <li>2017
 833 <ul>
 834
 835 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 836
 837 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 838
 839 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 840
 841 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 842
 843 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 844
 845 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 846
 847 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 848
 849 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 850
 851 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 852
 853 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 854
 855 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 856
 857 </ul></li>
 858
 859 <li>2016
 860 <ul>
 861
 862 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 863
 864 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 865
 866 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 867
 868 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 869
 870 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 871
 872 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 873
 874 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 875
 876 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 877
 878 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 879
 880 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 881
 882 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 883
 884 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 885
 886 </ul></li>
 887
 888 <li>2015
 889 <ul>
 890
 891 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 892
 893 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 894
 895 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 896
 897 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 898
 899 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 900
 901 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 902
 903 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 904
 905 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 906
 907 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 908
 909 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 910
 911 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 912
 913 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 914
 915 </ul></li>
 916
 917 <li>2014
 918 <ul>
 919
 920 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 921
 922 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 923
 924 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 925
 926 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 927
 928 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 929
 930 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 931
 932 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 933
 934 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 935
 936 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 937
 938 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 939
 940 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 941
 942 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 943
 944 </ul></li>
 945
 946 <li>2013
 947 <ul>
 948
 949 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 950
 951 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 952
 953 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 954
 955 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 956
 957 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 958
 959 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 960
 961 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 962
 963 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 964
 965 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 966
 967 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 968
 969 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 970
 971 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 972
 973 </ul></li>
 974
 975 <li>2012
 976 <ul>
 977
 978 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 979
 980 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 981
 982 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 983
 984 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 985
 986 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 987
 988 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 989
 990 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 991
 992 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 993
 994 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 995
 996 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 997
 998 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 999
1000 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
1001
1002 </ul></li>
1003
1004 <li>2011
1005 <ul>
1006
1007 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
1008
1009 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
1010
1011 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
1012
1013 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
1014
1015 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
1016
1017 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
1018
1019 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
1020
1021 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
1022
1023 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
1024
1025 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
1026
1027 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
1028
1029 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
1030
1031 </ul></li>
1032
1033 <li>2010
1034 <ul>
1035
1036 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1037
1038 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1039
1040 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1041
1042 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1043
1044 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1045
1046 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1047
1048 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1049
1050 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1051
1052 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1053
1054 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1055
1056 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1057
1058 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1059
1060 </ul></li>
1061
1062 <li>2009
1063 <ul>
1064
1065 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1066
1067 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1068
1069 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1070
1071 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1072
1073 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1074
1075 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1076
1077 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1078
1079 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1080
1081 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1082
1083 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1084
1085 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1086
1087 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1088
1089 </ul></li>
1090
1091 <li>2008
1092 <ul>
1093
1094 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1095
1096 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1097
1098 </ul></li>
1099
1100 </ul>
1101
1102
1103
1104 <h2>Tags</h2>
1105 <ul>
1106
1107  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
1108
1109  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1110
1111  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1112
1113  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1114
1115  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (10)</a></li>
1116
1117  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
1118
1119  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1120
1121  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1122
1123  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (163)</a></li>
1124
1125  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
1126
1127  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
1128
1129  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1130
1131  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
1132
1133  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (25)</a></li>
1134
1135  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1136
1137  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (386)</a></li>
1138
1139  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1140
1141  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (13)</a></li>
1142
1143  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (32)</a></li>
1144
1145  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1146
1147  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1148
1149  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1150
1151  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1152
1153  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
1154
1155  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
1156
1157  <li><a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi (3)</a></li>
1158
1159  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1160
1161  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
1162
1163  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1164
1165  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1166
1167  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1168
1169  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1170
1171  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
1172
1173  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (10)</a></li>
1174
1175  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
1176
1177  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (190)</a></li>
1178
1179  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
1180
1181  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1182
1183  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (72)</a></li>
1184
1185  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
1186
1187  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1188
1189  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1190
1191  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1192
1193  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1194
1195  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
1196
1197  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1198
1199  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
1200
1201  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1202
1203  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (54)</a></li>
1204
1205  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1206
1207  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1208
1209  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
1210
1211  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
1212
1213  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
1214
1215  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
1216
1217  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
1218
1219  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1220
1221  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1222
1223  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (12)</a></li>
1224
1225  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (68)</a></li>
1226
1227  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1228
1229  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
1230
1231 </ul>
1232
1233
1234     </div>
1235     <p style="text-align: right">
1236  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1237 </p>
1238
1239   </body>
1240 </html>