blog/Valutakrambod___A_python_and_bitcoin_love_story.html

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   6     <title>Petter Reinholdtsen: Valutakrambod - A python and bitcoin love story</title>
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  14  <h1>
  15      <a href="https://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <div class="entry">
  23       <div class="title">Valutakrambod - A python and bitcoin love story</div>
  24       <div class="date">29th September 2018</div>
  25       <div class="body"><p>It would come as no surprise to anyone that I am interested in
  26 bitcoins and virtual currencies.  I've been keeping an eye on virtual
  27 currencies for many years, and it is part of the reason a few months
  28 ago, I started writing a python library for collecting currency
  29 exchange rates and trade on virtual currency exchanges.  I decided to
  30 name the end result valutakrambod, which perhaps can be translated to
  31 small currency shop.</p>
  32
  33 <p>The library uses the tornado python library to handle HTTP and
  34 websocket connections, and provide a asynchronous system for
  35 connecting to and tracking several services.  The code is available
  36 from
  37 <a href="http://github.com/petterreinholdtsen/valutakrambod">github</a>.</p>
  38
  39 </p>There are two example clients of the library.  One is very simple and
  40 list every updated buy/sell price received from the various services.
  41 This code is started by running bin/btc-rates and call the client code
  42 in valutakrambod/client.py.  The simple client look like this:</p>
  43
  44 <p><blockquote><pre>
  45 import functools
  46 import tornado.ioloop
  47 import valutakrambod
  48 class SimpleClient(object):
  49     def __init__(self):
  50         self.services = []
  51         self.streams = []
  52         pass
  53     def newdata(self, service, pair, changed):
  54         print("%-15s %s-%s: %8.3f %8.3f" % (
  55             service.servicename(),
  56             pair[0],
  57             pair[1],
  58             service.rates[pair]['ask'],
  59             service.rates[pair]['bid'])
  60         )
  61     async def refresh(self, service):
  62         await service.fetchRates(service.wantedpairs)
  63     def run(self):
  64         self.ioloop = tornado.ioloop.IOLoop.current()
  65         self.services = valutakrambod.service.knownServices()
  66         for e in self.services:
  67             service = e()
  68             service.subscribe(self.newdata)
  69             stream = service.websocket()
  70             if stream:
  71                 self.streams.append(stream)
  72             else:
  73                 # Fetch information from non-streaming services immediately
  74                 self.ioloop.call_later(len(self.services),
  75                                        functools.partial(self.refresh, service))
  76                 # as well as regularly
  77                 service.periodicUpdate(60)
  78         for stream in self.streams:
  79             stream.connect()
  80         try:
  81             self.ioloop.start()
  82         except KeyboardInterrupt:
  83             print("Interrupted by keyboard, closing all connections.")
  84             pass
  85         for stream in self.streams:
  86             stream.close()
  87 </pre></blockquote></p>
  88
  89 <p>The library client loops over all known "public" services,
  90 initialises it, subscribes to any updates from the service, checks and
  91 activates websocket streaming if the service provide it, and if no
  92 streaming is supported, fetches information from the service and sets
  93 up a periodic update every 60 seconds.  The output from this client
  94 can look like this:</p>
  95
  96 <p><blockquote><pre>
  97 Bl3p            BTC-EUR: 5687.110 5653.690
  98 Bl3p            BTC-EUR: 5687.110 5653.690
  99 Bl3p            BTC-EUR: 5687.110 5653.690
 100 Hitbtc          BTC-USD: 6594.560 6593.690
 101 Hitbtc          BTC-USD: 6594.560 6593.690
 102 Bl3p            BTC-EUR: 5687.110 5653.690
 103 Hitbtc          BTC-USD: 6594.570 6593.690
 104 Bitstamp        EUR-USD:    1.159    1.154
 105 Hitbtc          BTC-USD: 6594.570 6593.690
 106 Hitbtc          BTC-USD: 6594.580 6593.690
 107 Hitbtc          BTC-USD: 6594.580 6593.690
 108 Hitbtc          BTC-USD: 6594.580 6593.690
 109 Bl3p            BTC-EUR: 5687.110 5653.690
 110 Paymium         BTC-EUR: 5680.000 5620.240
 111 </pre></blockquote></p>
 112
 113 <p>The exchange order book is tracked in addition to the best buy/sell
 114 price, for those that need to know the details.</p>
 115
 116 <p>The other example client is focusing on providing a curses view
 117 with updated buy/sell prices as soon as they are received from the
 118 services.  This code is located in bin/btc-rates-curses and activated
 119 by using the '-c' argument.  Without the argument the "curses" output
 120 is printed without using curses, which is useful for debugging.  The
 121 curses view look like this:</p>
 122
 123 <p><blockquote><pre>
 124            Name Pair   Bid         Ask         Spr    Ftcd    Age
 125  BitcoinsNorway BTCEUR   5591.8400   5711.0800   2.1%   16    nan     60
 126        Bitfinex BTCEUR   5671.0000   5671.2000   0.0%   16     22     59
 127         Bitmynt BTCEUR   5580.8000   5807.5200   3.9%   16     41     60
 128          Bitpay BTCEUR   5663.2700         nan   nan%   15    nan     60
 129        Bitstamp BTCEUR   5664.8400   5676.5300   0.2%    0      1      1
 130            Bl3p BTCEUR   5653.6900   5684.9400   0.5%    0    nan     19
 131        Coinbase BTCEUR   5600.8200   5714.9000   2.0%   15    nan    nan
 132          Kraken BTCEUR   5670.1000   5670.2000   0.0%   14     17     60
 133         Paymium BTCEUR   5620.0600   5680.0000   1.1%    1   7515    nan
 134  BitcoinsNorway BTCNOK  52898.9700  54034.6100   2.1%   16    nan     60
 135         Bitmynt BTCNOK  52960.3200  54031.1900   2.0%   16     41     60
 136          Bitpay BTCNOK  53477.7833         nan   nan%   16    nan     60
 137        Coinbase BTCNOK  52990.3500  54063.0600   2.0%   15    nan    nan
 138         MiraiEx BTCNOK  52856.5300  54100.6000   2.3%   16    nan    nan
 139  BitcoinsNorway BTCUSD   6495.5300   6631.5400   2.1%   16    nan     60
 140        Bitfinex BTCUSD   6590.6000   6590.7000   0.0%   16     23     57
 141          Bitpay BTCUSD   6564.1300         nan   nan%   15    nan     60
 142        Bitstamp BTCUSD   6561.1400   6565.6200   0.1%    0      2      1
 143        Coinbase BTCUSD   6504.0600   6635.9700   2.0%   14    nan    117
 144          Gemini BTCUSD   6567.1300   6573.0700   0.1%   16     89    nan
 145          Hitbtc+BTCUSD   6592.6200   6594.2100   0.0%    0      0      0
 146          Kraken BTCUSD   6565.2000   6570.9000   0.1%   15     17     58
 147   Exchangerates EURNOK      9.4665      9.4665   0.0%   16 107789    nan
 148      Norgesbank EURNOK      9.4665      9.4665   0.0%   16 107789    nan
 149        Bitstamp EURUSD      1.1537      1.1593   0.5%    4      5      1
 150   Exchangerates EURUSD      1.1576      1.1576   0.0%   16 107789    nan
 151  BitcoinsNorway LTCEUR      1.0000     49.0000  98.0%   16    nan    nan
 152  BitcoinsNorway LTCNOK    492.4800    503.7500   2.2%   16    nan     60
 153  BitcoinsNorway LTCUSD      1.0221     49.0000  97.9%   15    nan    nan
 154      Norgesbank USDNOK      8.1777      8.1777   0.0%   16 107789    nan
 155 </pre></blockquote></p>
 156
 157 <p>The code for this client is too complex for a simple blog post, so
 158 you will have to check out the git repository to figure out how it
 159 work.  What I can tell is how the three last numbers on each line
 160 should be interpreted.  The first is how many seconds ago information
 161 was received from the service.  The second is how long ago, according
 162 to the service, the provided information was updated.  The last is an
 163 estimate on how often the buy/sell values change.</p>
 164
 165 <p>If you find this library useful, or would like to improve it, I
 166 would love to hear from you.  Note that for some of the services I've
 167 implemented a trading API.  It might be the topic of a future blog
 168 post.</p>
 169
 170 <p>As usual, if you use Bitcoin and want to show your support of my
 171 activities, please send Bitcoin donations to my address
 172 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 173 </div>
 174
 175       <div class="tags">Tags: <a href="https://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>.</div>
 176
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 187 <h2>Archive</h2>
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 245 <li>2019
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 264 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/11/">November (1)</a></li>
 265
 266 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/12/">December (4)</a></li>
 267
 268 </ul></li>
 269
 270 <li>2018
 271 <ul>
 272
 273 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 274
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 280
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 288
 289 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/10/">October (5)</a></li>
 290
 291 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/11/">November (2)</a></li>
 292
 293 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/12/">December (4)</a></li>
 294
 295 </ul></li>
 296
 297 <li>2017
 298 <ul>
 299
 300 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 301
 302 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 303
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 307
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 309
 310 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 311
 312 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 313
 314 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 315
 316 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 317
 318 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 319
 320 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 321
 322 </ul></li>
 323
 324 <li>2016
 325 <ul>
 326
 327 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 328
 329 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 330
 331 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 332
 333 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 334
 335 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 336
 337 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 338
 339 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 340
 341 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 342
 343 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 344
 345 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 346
 347 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 348
 349 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 350
 351 </ul></li>
 352
 353 <li>2015
 354 <ul>
 355
 356 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 357
 358 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 359
 360 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 361
 362 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 363
 364 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 365
 366 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 367
 368 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 369
 370 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 371
 372 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 373
 374 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 375
 376 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 377
 378 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 379
 380 </ul></li>
 381
 382 <li>2014
 383 <ul>
 384
 385 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 386
 387 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 388
 389 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 390
 391 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 392
 393 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 394
 395 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 396
 397 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 398
 399 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 400
 401 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 402
 403 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 404
 405 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 406
 407 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 408
 409 </ul></li>
 410
 411 <li>2013
 412 <ul>
 413
 414 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 415
 416 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 417
 418 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 419
 420 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 421
 422 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 423
 424 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 425
 426 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 427
 428 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 429
 430 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 431
 432 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 433
 434 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 435
 436 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 437
 438 </ul></li>
 439
 440 <li>2012
 441 <ul>
 442
 443 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 444
 445 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 446
 447 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 448
 449 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 450
 451 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 452
 453 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 454
 455 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 456
 457 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 458
 459 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 460
 461 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 462
 463 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 464
 465 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 466
 467 </ul></li>
 468
 469 <li>2011
 470 <ul>
 471
 472 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 473
 474 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 475
 476 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 477
 478 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 479
 480 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 481
 482 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 483
 484 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 485
 486 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 487
 488 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 489
 490 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 491
 492 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 493
 494 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 495
 496 </ul></li>
 497
 498 <li>2010
 499 <ul>
 500
 501 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 502
 503 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 504
 505 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 506
 507 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 508
 509 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 510
 511 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 512
 513 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 514
 515 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 516
 517 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 518
 519 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 520
 521 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 522
 523 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 524
 525 </ul></li>
 526
 527 <li>2009
 528 <ul>
 529
 530 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 531
 532 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 533
 534 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 535
 536 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 537
 538 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 539
 540 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 541
 542 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 543
 544 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 545
 546 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 547
 548 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 549
 550 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 551
 552 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 553
 554 </ul></li>
 555
 556 <li>2008
 557 <ul>
 558
 559 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 560
 561 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 562
 563 </ul></li>
 564
 565 </ul>
 566
 567
 568
 569 <h2>Tags</h2>
 570 <ul>
 571
 572  <li><a href="https://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (17)</a></li>
 573
 574  <li><a href="https://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 575
 576  <li><a href="https://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 577
 578  <li><a href="https://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 579
 580  <li><a href="https://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (9)</a></li>
 581
 582  <li><a href="https://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (12)</a></li>
 583
 584  <li><a href="https://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 585
 586  <li><a href="https://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 587
 588  <li><a href="https://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 589
 590  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian">debian (178)</a></li>
 591
 592  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (159)</a></li>
 593
 594  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (8)</a></li>
 595
 596  <li><a href="https://people.skolelinux.org/pere/blog/tags/digistan">digistan (11)</a></li>
 597
 598  <li><a href="https://people.skolelinux.org/pere/blog/tags/dld">dld (18)</a></li>
 599
 600  <li><a href="https://people.skolelinux.org/pere/blog/tags/docbook">docbook (30)</a></li>
 601
 602  <li><a href="https://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 603
 604  <li><a href="https://people.skolelinux.org/pere/blog/tags/english">english (432)</a></li>
 605
 606  <li><a href="https://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 607
 608  <li><a href="https://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (14)</a></li>
 609
 610  <li><a href="https://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (34)</a></li>
 611
 612  <li><a href="https://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
 613
 614  <li><a href="https://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (20)</a></li>
 615
 616  <li><a href="https://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
 617
 618  <li><a href="https://people.skolelinux.org/pere/blog/tags/intervju">intervju (43)</a></li>
 619
 620  <li><a href="https://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
 621
 622  <li><a href="https://people.skolelinux.org/pere/blog/tags/kart">kart (23)</a></li>
 623
 624  <li><a href="https://people.skolelinux.org/pere/blog/tags/kodi">kodi (4)</a></li>
 625
 626  <li><a href="https://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
 627
 628  <li><a href="https://people.skolelinux.org/pere/blog/tags/lego">lego (5)</a></li>
 629
 630  <li><a href="https://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
 631
 632  <li><a href="https://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 633
 634  <li><a href="https://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 635
 636  <li><a href="https://people.skolelinux.org/pere/blog/tags/madewithcc">madewithcc (3)</a></li>
 637
 638  <li><a href="https://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
 639
 640  <li><a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (42)</a></li>
 641
 642  <li><a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (13)</a></li>
 643
 644  <li><a href="https://people.skolelinux.org/pere/blog/tags/noark5">noark5 (23)</a></li>
 645
 646  <li><a href="https://people.skolelinux.org/pere/blog/tags/norsk">norsk (320)</a></li>
 647
 648  <li><a href="https://people.skolelinux.org/pere/blog/tags/nuug">nuug (198)</a></li>
 649
 650  <li><a href="https://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (40)</a></li>
 651
 652  <li><a href="https://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 653
 654  <li><a href="https://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (75)</a></li>
 655
 656  <li><a href="https://people.skolelinux.org/pere/blog/tags/personvern">personvern (114)</a></li>
 657
 658  <li><a href="https://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
 659
 660  <li><a href="https://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
 661
 662  <li><a href="https://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 663
 664  <li><a href="https://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
 665
 666  <li><a href="https://people.skolelinux.org/pere/blog/tags/robot">robot (14)</a></li>
 667
 668  <li><a href="https://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 669
 670  <li><a href="https://people.skolelinux.org/pere/blog/tags/ruter">ruter (7)</a></li>
 671
 672  <li><a href="https://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 673
 674  <li><a href="https://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (59)</a></li>
 675
 676  <li><a href="https://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 677
 678  <li><a href="https://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
 679
 680  <li><a href="https://people.skolelinux.org/pere/blog/tags/standard">standard (71)</a></li>
 681
 682  <li><a href="https://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (7)</a></li>
 683
 684  <li><a href="https://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (14)</a></li>
 685
 686  <li><a href="https://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (62)</a></li>
 687
 688  <li><a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (5)</a></li>
 689
 690  <li><a href="https://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
 691
 692  <li><a href="https://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
 693
 694  <li><a href="https://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (20)</a></li>
 695
 696  <li><a href="https://people.skolelinux.org/pere/blog/tags/video">video (76)</a></li>
 697
 698  <li><a href="https://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 699
 700  <li><a href="https://people.skolelinux.org/pere/blog/tags/web">web (42)</a></li>
 701
 702 </ul>
 703
 704
 705     </div>
 706     <p style="text-align: right">
 707  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 708 </p>
 709
 710   </body>
 711 </html>