blog/Creating__updating_and_checking_debian_copyright_semi_automatically.html

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   6     <title>Petter Reinholdtsen: Creating, updating and checking debian/copyright semi-automatically</title>
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  14  <h1>
  15      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <div class="entry">
  23       <div class="title">Creating, updating and checking debian/copyright semi-automatically</div>
  24       <div class="date">19th February 2016</div>
  25       <div class="body"><p>Making packages for Debian requires quite a lot of attention to
  26 details.  And one of the details is the content of the
  27 debian/copyright file, which should list all relevant licenses used by
  28 the code in the package in question, preferably in
  29 <a href="https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/">machine
  30 readable DEP5 format</a>.</p>
  31
  32 <p>For large packages with lots of contributors it is hard to write
  33 and update this file manually, and if you get some detail wrong, the
  34 package is normally rejected by the ftpmasters.  So getting it right
  35 the first time around get the package into Debian faster, and save
  36 both you and the ftpmasters some work..  Today, while trying to figure
  37 out what was wrong with
  38 <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686447">the
  39 zfsonlinux copyright file</a>, I decided to spend some time on
  40 figuring out the options for doing this job automatically, or at least
  41 semi-automatically.</p>
  42
  43 <p>Lucikly, there are at least two tools available for generating the
  44 file based on the code in the source package,
  45 <tt><a href="https://tracker.debian.org/pkg/debmake">debmake</a></tt>
  46 and <tt><a href="https://tracker.debian.org/pkg/cme">cme</a></tt>.  I'm
  47 not sure which one of them came first, but both seem to be able to
  48 create a sensible draft file.  As far as I can tell, none of them can
  49 be trusted to get the result just right, so the content need to be
  50 polished a bit before the file is OK to upload.  I found the debmake
  51 option in
  52 <a href="http://goofying-with-debian.blogspot.com/2014/07/debmake-checking-source-against-dep-5.html">a
  53 blog posts from 2014</a>.
  54
  55 <p>To generate using debmake, use the -cc option:
  56
  57 <p><pre>
  58 debmake -cc > debian/copyright
  59 </pre></p>
  60
  61 <p>Note there are some problems with python and non-ASCII names, so
  62 this might not be the best option.</p>
  63
  64 <p>The cme option is based on a config parsing library, and I found
  65 this approach in
  66 <a href="https://ddumont.wordpress.com/2015/04/05/improving-creation-of-debian-copyright-file/">a
  67 blog post from 2015</a>.  To generate using cme, use the 'update
  68 dpkg-copyright' option:
  69
  70 <p><pre>
  71 cme update dpkg-copyright
  72 </pre></p>
  73
  74 <p>This will create or update debian/copyright.  The cme tool seem to
  75 handle UTF-8 names better than debmake.</p>
  76
  77 <p>When the copyright file is created, I would also like some help to
  78 check if the file is correct.  For this I found two good options,
  79 <tt>debmake -k</tt> and <tt>license-reconcile</tt>.  The former seem
  80 to focus on license types and file matching, and is able to detect
  81 ineffective blocks in the copyright file.  The latter reports missing
  82 copyright holders and years, but was confused by inconsistent license
  83 names (like CDDL vs. CDDL-1.0).  I suspect it is good to use both and
  84 fix all issues reported by them before uploading.  But I do not know
  85 if the tools and the ftpmasters agree on what is important to fix in a
  86 copyright file, so the package might still be rejected.</p>
  87
  88 <p>The devscripts tool <tt>licensecheck</tt> deserve mentioning.  It
  89 will read through the source and try to find all copyright statements.
  90 It is not comparing the result to the content of debian/copyright, but
  91 can be useful when verifying the content of the copyright file.</p>
  92
  93 <p>Are you aware of better tools in Debian to create and update
  94 debian/copyright file.  Please let me know, or blog about it on
  95 planet.debian.org.</p>
  96
  97 <p>As usual, if you use Bitcoin and want to show your support of my
  98 activities, please send Bitcoin donations to my address
  99 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 100
 101 <p><strong>Update 2016-02-20</strong>: I got a tip from Mike Gabriel
 102 on how to use licensecheck and cdbs to create a draft copyright file
 103
 104 <p><pre>
 105 licensecheck --copyright -r `find * -type f` | \
 106   /usr/lib/cdbs/licensecheck2dep5 > debian/copyright.auto
 107 </pre></p>
 108
 109 <p>He mentioned that he normally check the generated file into the
 110 version control system to make it easier to discover license and
 111 copyright changes in the upstream source.  I will try to do the same
 112 with my packages in the future.</p>
 113
 114 <p><strong>Update 2016-02-21</strong>: The cme author recommended
 115 against using -quiet for new users, so I removed it from the proposed
 116 command line.</p>
 117 </div>
 118
 119       <div class="tags">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>.</div>
 120
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 127     <div id="sidebar">
 128
 129
 130
 131 <h2>Archive</h2>
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 133
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 156
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 158
 159 <li>2017
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 171
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 173
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 175
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 177
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 179
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 181
 182 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 183
 184 </ul></li>
 185
 186 <li>2016
 187 <ul>
 188
 189 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 190
 191 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
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 196
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 198
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 200
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 202
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 204
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 206
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 208
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 210
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 212
 213 </ul></li>
 214
 215 <li>2015
 216 <ul>
 217
 218 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 219
 220 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 221
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 223
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 225
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 227
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 229
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 231
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 233
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 235
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 237
 238 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 239
 240 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 241
 242 </ul></li>
 243
 244 <li>2014
 245 <ul>
 246
 247 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 248
 249 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 250
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 252
 253 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 254
 255 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 256
 257 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 258
 259 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 260
 261 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 262
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 264
 265 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 266
 267 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 268
 269 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 270
 271 </ul></li>
 272
 273 <li>2013
 274 <ul>
 275
 276 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 277
 278 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 279
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 281
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 283
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 285
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 287
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 289
 290 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 291
 292 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 293
 294 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 295
 296 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 297
 298 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 299
 300 </ul></li>
 301
 302 <li>2012
 303 <ul>
 304
 305 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 306
 307 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 308
 309 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 310
 311 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 312
 313 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 314
 315 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 316
 317 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 318
 319 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 320
 321 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 322
 323 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 324
 325 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 326
 327 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 328
 329 </ul></li>
 330
 331 <li>2011
 332 <ul>
 333
 334 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 335
 336 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 337
 338 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 339
 340 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 341
 342 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 343
 344 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 345
 346 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 347
 348 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 349
 350 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 351
 352 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 353
 354 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 355
 356 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 357
 358 </ul></li>
 359
 360 <li>2010
 361 <ul>
 362
 363 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 364
 365 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 366
 367 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 368
 369 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 370
 371 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 372
 373 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 374
 375 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 376
 377 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 378
 379 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 380
 381 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 382
 383 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 384
 385 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 386
 387 </ul></li>
 388
 389 <li>2009
 390 <ul>
 391
 392 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 393
 394 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 395
 396 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 397
 398 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 399
 400 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 401
 402 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 403
 404 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 405
 406 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 407
 408 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 409
 410 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 411
 412 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 413
 414 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 415
 416 </ul></li>
 417
 418 <li>2008
 419 <ul>
 420
 421 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 422
 423 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 424
 425 </ul></li>
 426
 427 </ul>
 428
 429
 430
 431 <h2>Tags</h2>
 432 <ul>
 433
 434  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
 435
 436  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 437
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 439
 440  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 441
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 443
 444  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 445
 446  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 447
 448  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 449
 450  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (164)</a></li>
 451
 452  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
 453
 454  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
 455
 456  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
 457
 458  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
 459
 460  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (25)</a></li>
 461
 462  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 463
 464  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (391)</a></li>
 465
 466  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 467
 468  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (13)</a></li>
 469
 470  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (32)</a></li>
 471
 472  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
 473
 474  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
 475
 476  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
 477
 478  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
 479
 480  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
 481
 482  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
 483
 484  <li><a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi (3)</a></li>
 485
 486  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
 487
 488  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
 489
 490  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
 491
 492  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 493
 494  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 495
 496  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
 497
 498  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
 499
 500  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (11)</a></li>
 501
 502  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
 503
 504  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (191)</a></li>
 505
 506  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (34)</a></li>
 507
 508  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 509
 510  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (72)</a></li>
 511
 512  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
 513
 514  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
 515
 516  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
 517
 518  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 519
 520  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
 521
 522  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
 523
 524  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 525
 526  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
 527
 528  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 529
 530  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (55)</a></li>
 531
 532  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 533
 534  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
 535
 536  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (57)</a></li>
 537
 538  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
 539
 540  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
 541
 542  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
 543
 544  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
 545
 546  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
 547
 548  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
 549
 550  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (13)</a></li>
 551
 552  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (69)</a></li>
 553
 554  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 555
 556  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
 557
 558 </ul>
 559
 560
 561     </div>
 562     <p style="text-align: right">
 563  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 564 </p>
 565
 566   </body>
 567 </html>