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   6     <title>Petter Reinholdtsen</title>
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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/Web_services_for_writing_academic_LaTeX_papers_as_a_team.html">Web services for writing academic LaTeX papers as a team</a></div>
  24       <div class="date">31st October 2017</div>
  25       <div class="body"><p>I was surprised today to learn that a friend in academia did not
  26 know there are easily available web services available for writing
  27 LaTeX documents as a team.  I thought it was common knowledge, but to
  28 make sure at least my readers are aware of it, I would like to mention
  29 these useful services for writing LaTeX documents.  Some of them even
  30 provide a WYSIWYG editor to ease writing even further.</p>
  31
  32 <p>There are two commercial services available, <a
  33 href="https://sharelatex.com">ShareLaTeX</a> and <a
  34 href="https://overleaf.com">Overleaf</a>.  They are very easy to use.
  35 Just start a new document, select which publisher to write for (ie
  36 which LaTeX style to use), and start writing.  Note, these two have announced their
  37 intention to join forces, so soon it will only be one joint service.
  38 I've used both for different documents, and they work just fine.
  39 While <a href="https://github.com/sharelatex/sharelatex">ShareLaTeX is
  40 free software</a>, while the latter is not.  According to <a
  41 href="https://www.overleaf.com/help/17-is-overleaf-open-source">a
  42 announcement from Overleaf</a>, they plan to keep the ShareLaTeX code
  43 base maintained as free software.</p>
  44
  45 But these two are not the only alternatives.
  46 <a href="https://app.fiduswriter.org/">Fidus Writer</a> is another free
  47 software solution with <a href="https://github.com/fiduswriter">the
  48 source available on github</a>.  I have not used it myself.  Several
  49 others can be found on the nice
  50 <a href="https://alternativeto.net/software/sharelatex/">alterntiveTo
  51 web service</a>.
  52
  53 <p>If you like Google Docs or Etherpad, but would like to write
  54 documents in LaTeX, you should check out these services.  You can even
  55 host your own, if you want to. :)</p>
  56
  57 </div>
  58       <div class="tags">
  59
  60
  61         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
  62
  63
  64       </div>
  65     </div>
  66     <div class="padding"></div>
  67
  68     <div class="entry">
  69       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html">Locating IMDB IDs of movies in the Internet Archive using Wikidata</a></div>
  70       <div class="date">25th October 2017</div>
  71       <div class="body"><p>Recently, I needed to automatically check the copyright status of a
  72 set of <a href="http://www.imdb.com/">The Internet Movie database
  73 (IMDB)</a> entries, to figure out which one of the movies they refer
  74 to can be freely distributed on the Internet.  This proved to be
  75 harder than it sounds.  IMDB for sure list movies without any
  76 copyright protection, where the copyright protection has expired or
  77 where the movie is lisenced using a permissive license like one from
  78 Creative Commons.  These are mixed with copyright protected movies,
  79 and there seem to be no way to separate these classes of movies using
  80 the information in IMDB.</p>
  81
  82 <p>First I tried to look up entries manually in IMDB,
  83 <a href="https://www.wikipedia.org/">Wikipedia</a> and
  84 <a href="https://www.archive.org/">The Internet Archive</a>, to get a
  85 feel how to do this.  It is hard to know for sure using these sources,
  86 but it should be possible to be reasonable confident a movie is "out
  87 of copyright" with a few hours work per movie.  As I needed to check
  88 almost 20,000 entries, this approach was not sustainable.  I simply
  89 can not work around the clock for about 6 years to check this data
  90 set.</p>
  91
  92 <p>I asked the people behind The Internet Archive if they could
  93 introduce a new metadata field in their metadata XML for IMDB ID, but
  94 was told that they leave it completely to the uploaders to update the
  95 metadata.  Some of the metadata entries had IMDB links in the
  96 description, but I found no way to download all metadata files in bulk
  97 to locate those ones and put that approach aside.</p>
  98
  99 <p>In the process I noticed several Wikipedia articles about movies
 100 had links to both IMDB and The Internet Archive, and it occured to me
 101 that I could use the Wikipedia RDF data set to locate entries with
 102 both, to at least get a lower bound on the number of movies on The
 103 Internet Archive with a IMDB ID.  This is useful based on the
 104 assumption that movies distributed by The Internet Archive can be
 105 legally distributed on the Internet.  With some help from the RDF
 106 community (thank you DanC), I was able to come up with this query to
 107 pass to <a href="https://query.wikidata.org/">the SPARQL interface on
 108 Wikidata</a>:
 109
 110 <p><pre>
 111 SELECT ?work ?imdb ?ia ?when ?label
 112 WHERE
 113 {
 114   ?work wdt:P31/wdt:P279* wd:Q11424.
 115   ?work wdt:P345 ?imdb.
 116   ?work wdt:P724 ?ia.
 117   OPTIONAL {
 118         ?work wdt:P577 ?when.
 119         ?work rdfs:label ?label.
 120         FILTER(LANG(?label) = "en").
 121   }
 122 }
 123 </pre></p>
 124
 125 <p>If I understand the query right, for every film entry anywhere in
 126 Wikpedia, it will return the IMDB ID and The Internet Archive ID, and
 127 when the movie was released and its English title, if either or both
 128 of the latter two are available.  At the moment the result set contain
 129 2338 entries.  Of course, it depend on volunteers including both
 130 correct IMDB and The Internet Archive IDs in the wikipedia articles
 131 for the movie.  It should be noted that the result will include
 132 duplicates if the movie have entries in several languages.  There are
 133 some bogus entries, either because The Internet Archive ID contain a
 134 typo or because the movie is not available from The Internet Archive.
 135 I did not verify the IMDB IDs, as I am unsure how to do that
 136 automatically.</p>
 137
 138 <p>I wrote a small python script to extract the data set from Wikidata
 139 and check if the XML metadata for the movie is available from The
 140 Internet Archive, and after around 1.5 hour it produced a list of 2097
 141 free movies and their IMDB ID.  In total, 171 entries in Wikidata lack
 142 the refered Internet Archive entry.  I assume the 70 "disappearing"
 143 entries (ie 2338-2097-171) are duplicate entries.</p>
 144
 145 <p>This is not too bad, given that The Internet Archive report to
 146 contain <a href="https://archive.org/details/feature_films">5331
 147 feature films</a> at the moment, but it also mean more than 3000
 148 movies are missing on Wikipedia or are missing the pair of references
 149 on Wikipedia.</p>
 150
 151 <p>I was curious about the distribution by release year, and made a
 152 little graph to show how the amount of free movies is spread over the
 153 years:<p>
 154
 155 <p><img src="http://people.skolelinux.org/pere/blog/images/2017-10-25-verk-i-det-fri-filmer.png"></p>
 156
 157 <p>I expect the relative distribution of the remaining 3000 movies to
 158 be similar.</p>
 159
 160 <p>If you want to help, and want to ensure Wikipedia can be used to
 161 cross reference The Internet Archive and The Internet Movie Database,
 162 please make sure entries like this are listed under the "External
 163 links" heading on the Wikipedia article for the movie:</p>
 164
 165 <p><pre>
 166 * {{Internet Archive film|id=FightingLady}}
 167 * {{IMDb title|id=0036823|title=The Fighting Lady}}
 168 </pre></p>
 169
 170 <p>Please verify the links on the final page, to make sure you did not
 171 introduce a typo.</p>
 172
 173 <p>Here is the complete list, if you want to correct the 171
 174 identified Wikipedia entries with broken links to The Internet
 175 Archive: <a href="http://www.wikidata.org/entity/Q1140317">Q1140317</a>,
 176 <a href="http://www.wikidata.org/entity/Q458656">Q458656</a>,
 177 <a href="http://www.wikidata.org/entity/Q458656">Q458656</a>,
 178 <a href="http://www.wikidata.org/entity/Q470560">Q470560</a>,
 179 <a href="http://www.wikidata.org/entity/Q743340">Q743340</a>,
 180 <a href="http://www.wikidata.org/entity/Q822580">Q822580</a>,
 181 <a href="http://www.wikidata.org/entity/Q480696">Q480696</a>,
 182 <a href="http://www.wikidata.org/entity/Q128761">Q128761</a>,
 183 <a href="http://www.wikidata.org/entity/Q1307059">Q1307059</a>,
 184 <a href="http://www.wikidata.org/entity/Q1335091">Q1335091</a>,
 185 <a href="http://www.wikidata.org/entity/Q1537166">Q1537166</a>,
 186 <a href="http://www.wikidata.org/entity/Q1438334">Q1438334</a>,
 187 <a href="http://www.wikidata.org/entity/Q1479751">Q1479751</a>,
 188 <a href="http://www.wikidata.org/entity/Q1497200">Q1497200</a>,
 189 <a href="http://www.wikidata.org/entity/Q1498122">Q1498122</a>,
 190 <a href="http://www.wikidata.org/entity/Q865973">Q865973</a>,
 191 <a href="http://www.wikidata.org/entity/Q834269">Q834269</a>,
 192 <a href="http://www.wikidata.org/entity/Q841781">Q841781</a>,
 193 <a href="http://www.wikidata.org/entity/Q841781">Q841781</a>,
 194 <a href="http://www.wikidata.org/entity/Q1548193">Q1548193</a>,
 195 <a href="http://www.wikidata.org/entity/Q499031">Q499031</a>,
 196 <a href="http://www.wikidata.org/entity/Q1564769">Q1564769</a>,
 197 <a href="http://www.wikidata.org/entity/Q1585239">Q1585239</a>,
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 345 <a href="http://www.wikidata.org/entity/Q774474">Q774474</a></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_one_way_wall_on_the_border_.html">A one-way wall on the border?</a></div>
 359       <div class="date">14th October 2017</div>
 360       <div class="body"><p>I find it fascinating how many of the people being locked inside
 361 the proposed border wall between USA and Mexico support the idea.  The
 362 proposal to keep Mexicans out reminds me of
 363 <a href="http://www.history.com/news/10-things-you-may-not-know-about-the-berlin-wall">the
 364 propaganda twist from the East Germany government</a> calling the wall
 365 the “Antifascist Bulwark” after erecting the Berlin Wall, claiming
 366 that the wall was erected to keep enemies from creeping into East
 367 Germany, while it was obvious to the people locked inside it that it
 368 was erected to keep the people from escaping.</p>
 369
 370 <p>Do the people in USA supporting this wall really believe it is a
 371 one way wall, only keeping people on the outside from getting in,
 372 while not keeping people in the inside from getting out?</p>
 373 </div>
 374       <div class="tags">
 375
 376
 377         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 378
 379
 380       </div>
 381     </div>
 382     <div class="padding"></div>
 383
 384     <div class="entry">
 385       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Generating_3D_prints_in_Debian_using_Cura_and_Slic3r__prusa_.html">Generating 3D prints in Debian using Cura and Slic3r(-prusa)</a></div>
 386       <div class="date"> 9th October 2017</div>
 387       <div class="body"><p>At my nearby maker space,
 388 <a href="http://sonen.ifi.uio.no/">Sonen</a>, I heard the story that it
 389 was easier to generate gcode files for theyr 3D printers (Ultimake 2+)
 390 on Windows and MacOS X than Linux, because the software involved had
 391 to be manually compiled and set up on Linux while premade packages
 392 worked out of the box on Windows and MacOS X.  I found this annoying,
 393 as the software involved,
 394 <a href="https://github.com/Ultimaker/Cura">Cura</a>, is free software
 395 and should be trivial to get up and running on Linux if someone took
 396 the time to package it for the relevant distributions.  I even found
 397 <a href="https://bugs.debian.org/706656">a request for adding into
 398 Debian</a> from 2013, which had seem some activity over the years but
 399 never resulted in the software showing up in Debian.  So a few days
 400 ago I offered my help to try to improve the situation.</p>
 401
 402 <p>Now I am very happy to see that all the packages required by a
 403 working Cura in Debian are uploaded into Debian and waiting in the NEW
 404 queue for the ftpmasters to have a look.  You can track the progress
 405 on
 406 <a href="https://qa.debian.org/developer.php?email=3dprinter-general%40lists.alioth.debian.org">the
 407 status page for the 3D printer team</a>.</p>
 408
 409 <p>The uploaded packages are a bit behind upstream, and was uploaded
 410 now to get slots in <a href="https://ftp-master.debian.org/new.html">the NEW
 411 queue</a> while we work up updating the packages to the latest
 412 upstream version.</p>
 413
 414 <p>On a related note, two competitors for Cura, which I found harder
 415 to use and was unable to configure correctly for Ultimaker 2+ in the
 416 short time I spent on it, are already in Debian.  If you are looking
 417 for 3D printer "slicers" and want something already available in
 418 Debian, check out
 419 <a href="https://tracker.debian.org/pkg/slic3r">slic3r</a> and
 420 <a href="https://tracker.debian.org/pkg/slic3r-prusa">slic3r-prusa</a>.
 421 The latter is a fork of the former.</p>
 422 </div>
 423       <div class="tags">
 424
 425
 426         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 427
 428
 429       </div>
 430     </div>
 431     <div class="padding"></div>
 432
 433     <div class="entry">
 434       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Mangler_du_en_skrue__eller_har_du_en_skrue_l_s_.html">Mangler du en skrue, eller har du en skrue løs?</a></div>
 435       <div class="date"> 4th October 2017</div>
 436       <div class="body">Når jeg holder på med ulike prosjekter, så trenger jeg stadig ulike
 437 skruer.  Det siste prosjektet jeg holder på med er å lage
 438 <a href="https://www.thingiverse.com/thing:676916">en boks til en
 439 HDMI-touch-skjerm</a> som skal brukes med Raspberry Pi.  Boksen settes
 440 sammen med skruer og bolter, og jeg har vært i tvil om hvor jeg kan
 441 få tak i de riktige skruene.  Clas Ohlson og Jernia i nærheten har
 442 sjelden hatt det jeg trenger.  Men her om dagen fikk jeg et fantastisk
 443 tips for oss som bor i Oslo.
 444 <a href="http://www.zachskruer.no/">Zachariassen Jernvare AS</a> i
 445 <a href="http://www.openstreetmap.org/?mlat=59.93421&mlon=10.76795#map=19/59.93421/10.76795">Hegermannsgate
 446 23A på Torshov</a> har et fantastisk utvalg, og åpent mellom 09:00 og
 447 17:00.  De selger skruer, muttere, bolter, skiver etc i løs vekt, og
 448 så langt har jeg fått alt jeg har lett etter.  De har i tillegg det
 449 meste av annen jernvare, som verktøy, lamper, ledninger, etc.  Jeg
 450 håper de har nok kunder til å holde det gående lenge, da dette er en
 451 butikk jeg kommer til å besøke ofte.  Butikken er et funn å ha i
 452 nabolaget for oss som liker å bygge litt selv. :)</p>
 453 </div>
 454       <div class="tags">
 455
 456
 457         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>.
 458
 459
 460       </div>
 461     </div>
 462     <div class="padding"></div>
 463
 464     <div class="entry">
 465       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Visualizing_GSM_radio_chatter_using_gr_gsm_and_Hopglass.html">Visualizing GSM radio chatter using gr-gsm and Hopglass</a></div>
 466       <div class="date">29th September 2017</div>
 467       <div class="body"><p>Every mobile phone announce its existence over radio to the nearby
 468 mobile cell towers.  And this radio chatter is available for anyone
 469 with a radio receiver capable of receiving them.  Details about the
 470 mobile phones with very good accuracy is of course collected by the
 471 phone companies, but this is not the topic of this blog post.  The
 472 mobile phone radio chatter make it possible to figure out when a cell
 473 phone is nearby, as it include the SIM card ID (IMSI).  By paying
 474 attention over time, one can see when a phone arrive and when it leave
 475 an area.  I believe it would be nice to make this information more
 476 available to the general public, to make more people aware of how
 477 their phones are announcing their whereabouts to anyone that care to
 478 listen.</p>
 479
 480 <p>I am very happy to report that we managed to get something
 481 visualizing this information up and running for
 482 <a href="http://norwaymakers.org/osf17">Oslo Skaperfestival 2017</a>
 483 (Oslo Makers Festival) taking place today and tomorrow at Deichmanske
 484 library.  The solution is based on the
 485 <a href="http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html">simple
 486 recipe for listening to GSM chatter</a> I posted a few days ago, and
 487 will show up at the stand of <a href="http://sonen.ifi.uio.no/">Åpen
 488 Sone from the Computer Science department of the University of
 489 Oslo</a>.  The presentation will show the nearby mobile phones (aka
 490 IMSIs) as dots in a web browser graph, with lines to the dot
 491 representing mobile base station it is talking to. It was working in
 492 the lab yesterday, and was moved into place this morning.</p>
 493
 494 <p>We set up a fairly powerful desktop machine using Debian
 495 Buster/Testing with several (five, I believe) RTL2838 DVB-T receivers
 496 connected and visualize the visible cell phone towers using an
 497 <a href="https://github.com/marlow925/hopglass">English version of
 498 Hopglass</a>.  A fairly powerfull machine is needed as the
 499 grgsm_livemon_headless processes from
 500 <a href="https://tracker.debian.org/pkg/gr-gsm">gr-gsm</a> converting
 501 the radio signal to data packages is quite CPU intensive.</p>
 502
 503 <p>The frequencies to listen to, are identified using a slightly
 504 patched scan-and-livemon (to set the --args values for each receiver),
 505 and the Hopglass data is generated using the
 506 <a href="https://github.com/petterreinholdtsen/IMSI-catcher/tree/meshviewer-output">patches
 507 in my meshviewer-output branch</a>.  For some reason we could not get
 508 more than four SDRs working.  There is also a geographical map trying
 509 to show the location of the base stations, but I believe their
 510 coordinates are hardcoded to some random location in Germany, I
 511 believe.  The code should be replaced with code to look up location in
 512 a text file, a sqlite database or one of the online databases
 513 mentioned in
 514 <a href="https://github.com/Oros42/IMSI-catcher/issues/14">the github
 515 issue for the topic</a>.
 516
 517 <p>If this sound interesting, visit the stand at the festival!</p>
 518 </div>
 519       <div class="tags">
 520
 521
 522         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/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
 523
 524
 525       </div>
 526     </div>
 527     <div class="padding"></div>
 528
 529     <div class="entry">
 530       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html">Easier recipe to observe the cell phones around you</a></div>
 531       <div class="date">24th September 2017</div>
 532       <div class="body"><p>A little more than a month ago I wrote
 533 <a href="http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html">how
 534 to observe the SIM card ID (aka IMSI number) of mobile phones talking
 535 to nearby mobile phone base stations using Debian GNU/Linux and a
 536 cheap USB software defined radio</a>, and thus being able to pinpoint
 537 the location of people and equipment (like cars and trains) with an
 538 accuracy of a few kilometer.  Since then we have worked to make the
 539 procedure even simpler, and it is now possible to do this without any
 540 manual frequency tuning and without building your own packages.</p>
 541
 542 <p>The <a href="https://tracker.debian.org/pkg/gr-gsm">gr-gsm</a>
 543 package is now included in Debian testing and unstable, and the
 544 IMSI-catcher code no longer require root access to fetch and decode
 545 the GSM data collected using gr-gsm.</p>
 546
 547 <p>Here is an updated recipe, using packages built by Debian and a git
 548 clone of two python scripts:</p>
 549
 550 <ol>
 551
 552 <li>Start with a Debian machine running the Buster version (aka
 553   testing).</li>
 554
 555 <li>Run '<tt>apt install gr-gsm python-numpy python-scipy
 556   python-scapy</tt>' as root to install required packages.</li>
 557
 558 <li>Fetch the code decoding GSM packages using '<tt>git clone
 559   github.com/Oros42/IMSI-catcher.git</tt>'.</li>
 560
 561 <li>Insert USB software defined radio supported by GNU Radio.</li>
 562
 563 <li>Enter the IMSI-catcher directory and run '<tt>python
 564   scan-and-livemon</tt>' to locate the frequency of nearby base
 565   stations and start listening for GSM packages on one of them.</li>
 566
 567 <li>Enter the IMSI-catcher directory and run '<tt>python
 568   simple_IMSI-catcher.py</tt>' to display the collected information.</li>
 569
 570 </ol>
 571
 572 <p>Note, due to a bug somewhere the scan-and-livemon program (actually
 573 <a href="https://github.com/ptrkrysik/gr-gsm/issues/336">its underlying
 574 program grgsm_scanner</a>) do not work with the HackRF radio.  It does
 575 work with RTL 8232 and other similar USB radio receivers you can get
 576 very cheaply
 577 (<a href="https://www.ebay.com/sch/items/?_nkw=rtl+2832">for example
 578 from ebay</a>), so for now the solution is to scan using the RTL radio
 579 and only use HackRF for fetching GSM data.</p>
 580
 581 <p>As far as I can tell, a cell phone only show up on one of the
 582 frequencies at the time, so if you are going to track and count every
 583 cell phone around you, you need to listen to all the frequencies used.
 584 To listen to several frequencies, use the --numrecv argument to
 585 scan-and-livemon to use several receivers.  Further, I am not sure if
 586 phones using 3G or 4G will show as talking GSM to base stations, so
 587 this approach might not see all phones around you.  I typically see
 588 0-400 IMSI numbers an hour when looking around where I live.</p>
 589
 590 <p>I've tried to run the scanner on a
 591 <a href="https://wiki.debian.org/RaspberryPi">Raspberry Pi 2 and 3
 592 running Debian Buster</a>, but the grgsm_livemon_headless process seem
 593 to be too CPU intensive to keep up.  When GNU Radio print 'O' to
 594 stdout, I am told there it is caused by a buffer overflow between the
 595 radio and GNU Radio, caused by the program being unable to read the
 596 GSM data fast enough.  If you see a stream of 'O's from the terminal
 597 where you started scan-and-livemon, you need a give the process more
 598 CPU power.  Perhaps someone are able to optimize the code to a point
 599 where it become possible to set up RPi3 based GSM sniffers?  I tried
 600 using Raspbian instead of Debian, but there seem to be something wrong
 601 with GNU Radio on raspbian, causing glibc to abort().</p>
 602 </div>
 603       <div class="tags">
 604
 605
 606         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/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
 607
 608
 609       </div>
 610     </div>
 611     <div class="padding"></div>
 612
 613     <div class="entry">
 614       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Datalagringsdirektivet_kaster_skygger_over_H_yre_og_Arbeiderpartiet.html">Datalagringsdirektivet kaster skygger over Høyre og Arbeiderpartiet</a></div>
 615       <div class="date"> 7th September 2017</div>
 616       <div class="body"><p>For noen dager siden publiserte Jon Wessel-Aas en bloggpost om
 617 «<a href="http://www.uhuru.biz/?p=1821">Konklusjonen om datalagring som
 618 EU-kommisjonen ikke ville at vi skulle få se</a>».  Det er en
 619 interessant gjennomgang av EU-domstolens syn på snurpenotovervåkning
 620 av befolkningen, som er klar på at det er i strid med
 621 EU-lovgivingen.</p>
 622
 623 <p>Valgkampen går for fullt i Norge, og om noen få dager er siste
 624 frist for å avgi stemme.  En ting er sikkert, Høyre og Arbeiderpartiet
 625 får ikke min stemme
 626 <a href="http://people.skolelinux.org/pere/blog/Datalagringsdirektivet_gj_r_at_Oslo_H_yre_og_Arbeiderparti_ikke_f_r_min_stemme_i__r.html">denne
 627 gangen heller</a>.  Jeg har ikke glemt at de tvang igjennom loven som
 628 skulle pålegge alle data- og teletjenesteleverandører å overvåke alle
 629 sine kunder.  En lov som er vedtatt, og aldri opphevet igjen.</p>
 630
 631 <p>Det er tydelig fra diskusjonen rundt grenseløs digital overvåkning
 632 (eller "Digital Grenseforsvar" som det kalles i Orvellisk nytale) at
 633 hverken Høyre og Arbeiderpartiet har noen prinsipielle sperrer mot å
 634 overvåke hele befolkningen, og diskusjonen så langt tyder på at flere
 635 av de andre partiene heller ikke har det. Mange av
 636 <a href="https://data.holderdeord.no/votes/1301946411e">de som stemte
 637 for Datalagringsdirektivet i Stortinget</a> (64 fra Arbeiderpartiet,
 638 25 fra Høyre) er fortsatt aktive og argumenterer fortsatt for å radere
 639 vekk mer av innbyggernes privatsfære.</p>
 640
 641 <p>Når myndighetene demonstrerer sin mistillit til folket, tror jeg
 642 folket selv bør legge litt innsats i å verne sitt privatliv, ved å ta
 643 i bruk ende-til-ende-kryptert kommunikasjon med sine kjente og kjære,
 644 og begrense hvor mye privat informasjon som deles med uvedkommende.
 645 Det er jo ingenting som tyder på at myndighetene kommer til å være vår
 646 privatsfære.
 647 <a href="http://people.skolelinux.org/pere/blog/How_to_talk_with_your_loved_ones_in_private.html">Det
 648 er mange muligheter</a>.  Selv har jeg litt sans for
 649 <a href="https://ring.cx/">Ring</a>, som er basert på p2p-teknologi
 650 uten sentral kontroll, er fri programvare, og støtter meldinger, tale
 651 og video.  Systemet er tilgjengelig ut av boksen fra
 652 <a href="https://tracker.debian.org/pkg/ring">Debian</a> og
 653 <a href="https://launchpad.net/ubuntu/+source/ring">Ubuntu</a>, og det
 654 finnes pakker for Android, MacOSX og Windows.  Foreløpig er det få
 655 brukere med Ring, slik at jeg også bruker
 656 <a href="https://signal.org/">Signal</a> som nettleserutvidelse.</p>
 657 </div>
 658       <div class="tags">
 659
 660
 661         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/dld">dld</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>, <a href="http://people.skolelinux.org/pere/blog/tags/valg">valg</a>.
 662
 663
 664       </div>
 665     </div>
 666     <div class="padding"></div>
 667
 668     <div class="entry">
 669       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html">Simpler recipe on how to make a simple $7 IMSI Catcher using Debian</a></div>
 670       <div class="date"> 9th August 2017</div>
 671       <div class="body"><p>On friday, I came across an interesting article in the Norwegian
 672 web based ICT news magazine digi.no on
 673 <a href="https://www.digi.no/artikler/sikkerhetsforsker-lagde-enkel-imsi-catcher-for-60-kroner-na-kan-mobiler-kartlegges-av-alle/398588">how
 674 to collect the IMSI numbers of nearby cell phones</a> using the cheap
 675 DVB-T software defined radios.  The article refered to instructions
 676 and <a href="https://www.youtube.com/watch?v=UjwgNd_as30">a recipe by
 677 Keld Norman on Youtube on how to make a simple $7 IMSI Catcher</a>, and I decided to test them out.</p>
 678
 679 <p>The instructions said to use Ubuntu, install pip using apt (to
 680 bypass apt), use pip to install pybombs (to bypass both apt and pip),
 681 and the ask pybombs to fetch and build everything you need from
 682 scratch.  I wanted to see if I could do the same on the most recent
 683 Debian packages, but this did not work because pybombs tried to build
 684 stuff that no longer build with the most recent openssl library or
 685 some other version skew problem.  While trying to get this recipe
 686 working, I learned that the apt->pip->pybombs route was a long detour,
 687 and the only piece of software dependency missing in Debian was the
 688 gr-gsm package.  I also found out that the lead upstream developer of
 689 gr-gsm (the name stand for GNU Radio GSM) project already had a set of
 690 Debian packages provided in an Ubuntu PPA repository.  All I needed to
 691 do was to dget the Debian source package and built it.</p>
 692
 693 <p>The IMSI collector is a python script listening for packages on the
 694 loopback network device and printing to the terminal some specific GSM
 695 packages with IMSI numbers in them.  The code is fairly short and easy
 696 to understand.  The reason this work is because gr-gsm include a tool
 697 to read GSM data from a software defined radio like a DVB-T USB stick
 698 and other software defined radios, decode them and inject them into a
 699 network device on your Linux machine (using the loopback device by
 700 default).  This proved to work just fine, and I've been testing the
 701 collector for a few days now.</p>
 702
 703 <p>The updated and simpler recipe is thus to</p>
 704
 705 <ol>
 706
 707 <li>start with a Debian machine running Stretch or newer,</li>
 708
 709 <li>build and install the gr-gsm package available from
 710 <a href="http://ppa.launchpad.net/ptrkrysik/gr-gsm/ubuntu/pool/main/g/gr-gsm/">http://ppa.launchpad.net/ptrkrysik/gr-gsm/ubuntu/pool/main/g/gr-gsm/</a>,</li>
 711
 712 <li>clone the git repostory from <a href="https://github.com/Oros42/IMSI-catcher">https://github.com/Oros42/IMSI-catcher</a>,</li>
 713
 714 <li>run grgsm_livemon and adjust the frequency until the terminal
 715 where it was started is filled with a stream of text (meaning you
 716 found a GSM station).</li>
 717
 718 <li>go into the IMSI-catcher directory and run 'sudo python simple_IMSI-catcher.py' to extract the IMSI numbers.</li>
 719
 720 </ol>
 721
 722 <p>To make it even easier in the future to get this sniffer up and
 723 running, I decided to package
 724 <a href="https://github.com/ptrkrysik/gr-gsm/">the gr-gsm project</a>
 725 for Debian (<a href="https://bugs.debian.org/871055">WNPP
 726 #871055</a>), and the package was uploaded into the NEW queue today.
 727 Luckily the gnuradio maintainer has promised to help me, as I do not
 728 know much about gnuradio stuff yet.</p>
 729
 730 <p>I doubt this "IMSI cacher" is anywhere near as powerfull as
 731 commercial tools like
 732 <a href="https://www.thespyphone.com/portable-imsi-imei-catcher/">The
 733 Spy Phone Portable IMSI / IMEI Catcher</a> or the
 734 <a href="https://en.wikipedia.org/wiki/Stingray_phone_tracker">Harris
 735 Stingray</a>, but I hope the existance of cheap alternatives can make
 736 more people realise how their whereabouts when carrying a cell phone
 737 is easily tracked.  Seeing the data flow on the screen, realizing that
 738 I live close to a police station and knowing that the police is also
 739 wearing cell phones, I wonder how hard it would be for criminals to
 740 track the position of the police officers to discover when there are
 741 police near by, or for foreign military forces to track the location
 742 of the Norwegian military forces, or for anyone to track the location
 743 of government officials...</p>
 744
 745 <p>It is worth noting that the data reported by the IMSI-catcher
 746 script mentioned above is only a fraction of the data broadcasted on
 747 the GSM network.  It will only collect one frequency at the time,
 748 while a typical phone will be using several frequencies, and not all
 749 phones will be using the frequencies tracked by the grgsm_livemod
 750 program.  Also, there is a lot of radio chatter being ignored by the
 751 simple_IMSI-catcher script, which would be collected by extending the
 752 parser code.  I wonder if gr-gsm can be set up to listen to more than
 753 one frequency?</p>
 754 </div>
 755       <div class="tags">
 756
 757
 758         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/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
 759
 760
 761       </div>
 762     </div>
 763     <div class="padding"></div>
 764
 765     <div class="entry">
 766       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_edition_of_Debian_Administrator_s_Handbook_is_now_available.html">Norwegian Bokmål edition of Debian Administrator's Handbook is now available</a></div>
 767       <div class="date">25th July 2017</div>
 768       <div class="body"><p align="center"><img align="center" src="http://people.skolelinux.org/pere/blog/images/2017-07-25-debian-handbook-nb-testprint.png"/></p>
 769
 770 <p>I finally received a copy of the Norwegian Bokmål edition of
 771 "<a href="https://debian-handbook.info/">The Debian Administrator's
 772 Handbook</a>".  This test copy arrived in the mail a few days ago, and
 773 I am very happy to hold the result in my hand.   We spent around one and a half year translating it. This paperbook edition
 774 <a href="https://debian-handbook.info/get/#norwegian">is available
 775 from lulu.com</a>.  If you buy it quickly, you save 25% on the list
 776 price.  The book is also available for download in electronic form as
 777 PDF, EPUB and Mobipocket, as can be
 778 <a href="https://debian-handbook.info/browse/nb-NO/stable/">read online
 779 as a web page</a>.</p>
 780
 781 <p>This is the second book I publish (the first was the book
 782 "<a href="http://free-culture.cc/">Free Culture</a>" by Lawrence Lessig
 783 in
 784 <a href="http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22440520.html">English</a>,
 785 <a href="http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html">French</a>
 786 and
 787 <a href="http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html">Norwegian
 788 Bokmål</a>), and I am very excited to finally wrap up this
 789 project.  I hope
 790 "<a href="http://www.lulu.com/shop/rapha%C3%ABl-hertzog-and-roland-mas/h%C3%A5ndbok-for-debian-administratoren/paperback/product-23262290.html">Håndbok
 791 for Debian-administratoren</a>" will be well received.</p>
 792 </div>
 793       <div class="tags">
 794
 795
 796         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 797
 798
 799       </div>
 800     </div>
 801     <div class="padding"></div>
 802
 803     <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>
 804     <div id="sidebar">
 805
 806
 807
 808 <h2>Archive</h2>
 809 <ul>
 810
 811 <li>2017
 812 <ul>
 813
 814 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 815
 816 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 817
 818 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 819
 820 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 821
 822 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 823
 824 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 825
 826 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 827
 828 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 829
 830 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 831
 832 </ul></li>
 833
 834 <li>2016
 835 <ul>
 836
 837 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 838
 839 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 840
 841 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 842
 843 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 844
 845 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 846
 847 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 848
 849 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 850
 851 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 852
 853 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 854
 855 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 856
 857 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 858
 859 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 860
 861 </ul></li>
 862
 863 <li>2015
 864 <ul>
 865
 866 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 867
 868 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 869
 870 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 871
 872 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 873
 874 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 875
 876 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 877
 878 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 879
 880 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 881
 882 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 883
 884 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 885
 886 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 887
 888 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 889
 890 </ul></li>
 891
 892 <li>2014
 893 <ul>
 894
 895 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 896
 897 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 898
 899 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 900
 901 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 902
 903 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 904
 905 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 906
 907 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 908
 909 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 910
 911 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 912
 913 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 914
 915 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 916
 917 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 918
 919 </ul></li>
 920
 921 <li>2013
 922 <ul>
 923
 924 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 925
 926 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 927
 928 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 929
 930 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 931
 932 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 933
 934 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 935
 936 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 937
 938 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 939
 940 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 941
 942 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 943
 944 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 945
 946 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 947
 948 </ul></li>
 949
 950 <li>2012
 951 <ul>
 952
 953 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 954
 955 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 956
 957 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 958
 959 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 960
 961 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 962
 963 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 964
 965 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 966
 967 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 968
 969 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 970
 971 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 972
 973 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 974
 975 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 976
 977 </ul></li>
 978
 979 <li>2011
 980 <ul>
 981
 982 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 983
 984 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 985
 986 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 987
 988 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 989
 990 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 991
 992 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 993
 994 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 995
 996 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 997
 998 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 999
1000 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
1001
1002 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
1003
1004 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
1005
1006 </ul></li>
1007
1008 <li>2010
1009 <ul>
1010
1011 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1012
1013 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1014
1015 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1016
1017 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1018
1019 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1020
1021 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1022
1023 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1024
1025 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1026
1027 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1028
1029 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1030
1031 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1032
1033 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1034
1035 </ul></li>
1036
1037 <li>2009
1038 <ul>
1039
1040 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1041
1042 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1043
1044 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1045
1046 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1047
1048 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1049
1050 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1051
1052 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1053
1054 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1055
1056 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1057
1058 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1059
1060 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1061
1062 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1063
1064 </ul></li>
1065
1066 <li>2008
1067 <ul>
1068
1069 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1070
1071 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1072
1073 </ul></li>
1074
1075 </ul>
1076
1077
1078
1079 <h2>Tags</h2>
1080 <ul>
1081
1082  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (14)</a></li>
1083
1084  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1085
1086  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1087
1088  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1089
1090  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (9)</a></li>
1091
1092  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (16)</a></li>
1093
1094  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1095
1096  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1097
1098  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (154)</a></li>
1099
1100  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
1101
1102  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
1103
1104  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1105
1106  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
1107
1108  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (24)</a></li>
1109
1110  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1111
1112  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (357)</a></li>
1113
1114  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1115
1116  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
1117
1118  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (30)</a></li>
1119
1120  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1121
1122  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1123
1124  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1125
1126  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1127
1128  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (15)</a></li>
1129
1130  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
1131
1132  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1133
1134  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1135
1136  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1137
1138  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1139
1140  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1141
1142  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (39)</a></li>
1143
1144  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (9)</a></li>
1145
1146  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (293)</a></li>
1147
1148  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (189)</a></li>
1149
1150  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
1151
1152  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1153
1154  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (65)</a></li>
1155
1156  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (104)</a></li>
1157
1158  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (1)</a></li>
1159
1160  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1161
1162  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1163
1164  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1165
1166  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
1167
1168  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1169
1170  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (5)</a></li>
1171
1172  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1173
1174  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (53)</a></li>
1175
1176  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1177
1178  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1179
1180  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
1181
1182  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
1183
1184  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
1185
1186  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (52)</a></li>
1187
1188  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (3)</a></li>
1189
1190  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1191
1192  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1193
1194  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (59)</a></li>
1195
1196  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1197
1198  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (40)</a></li>
1199
1200 </ul>
1201
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1204     <p style="text-align: right">
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