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  13  <h1>
  14      <a href="https://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="https://people.skolelinux.org/pere/blog/Invidious_add_on_for_Kodi_20.html">Invidious add-on for Kodi 20</a></div>
  24       <div class="date">10th August 2023</div>
  25       <div class="body"><p>I still enjoy <a href="https://kodi.tv/">Kodi</a> and
  26 <a href="https://libreelec.tv/">LibreELEC</a> as my multimedia center
  27 at home.  Sadly two of the services I really would like to use from
  28 within Kodi are not easily available.  The most wanted add-on would be
  29 one making <a href="https://archive.org/">The Internet Archive</a>
  30 available, and it has
  31 <a href="https://kodi.wiki/view/Add-on:Internet_Archive">not been
  32 working</a> for many years.  The second most wanted add-on is one
  33 using <a href="https://invidious.io/">the Invidious privacy enhanced
  34 Youtube frontent</a>.  A plugin for this has been partly working, but
  35 not been kept up to date in the Kodi add-on repository, and its
  36 upstream seem to have given it up in April this year, when the git
  37 repository was closed.  A few days ago I got tired of this sad state
  38 of affairs and decided to
  39 <a href="https://github.com/petterreinholdtsen/kodi-invidious-plugin">have
  40 a go at improving the Invidious add-on</a>.  As
  41 <a href="https://github.com/iv-org/invidious/issues/3872">Google has
  42 already attacked</a> the Invidious concept, so it need all the support
  43 if can get.  My small contribution here is to improve the service
  44 status on Kodi.</p>
  45
  46 <p>I added support to the Invidious add-on for automatically picking a
  47 working Invidious instance, instead of requiring the user to specify
  48 the URL to a specific instance after installation.  I also had a look
  49 at the set of patches floating around in the various forks on github,
  50 and decided to clean up at least some of the features I liked and
  51 integrate them into my new release branch.  Now the plugin can handle
  52 channel and short video items in search results.  Earlier it could
  53 only handle single video instances in the search response.  I also
  54 brushed up the set of metadata displayed a bit, but hope I can figure
  55 out how to get more relevant metadata displayed.</p>
  56
  57 <p>Because I only use Kodi 20 myself, I only test on version 20 and am
  58 only motivated to ensure version 20 is working.  Because of API changes
  59 between version 19 and 20, I suspect it will fail with earlier Kodi
  60 versions.</p>
  61
  62 <p>I already
  63 <a href="https://github.com/xbmc/repo-plugins/pull/4363">asked to have
  64 the add-on added</a> to the official Kodi 20 repository, and is
  65 waiting to heard back from the repo maintainers.</p>
  66
  67 <p>As usual, if you use Bitcoin and want to show your support of my
  68 activities, please send Bitcoin donations to my address
  69 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  70 </div>
  71       <div class="tags">
  72
  73
  74         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/kodi">kodi</a>, <a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="https://people.skolelinux.org/pere/blog/tags/video">video</a>.
  75
  76
  77       </div>
  78     </div>
  79     <div class="padding"></div>
  80
  81     <div class="entry">
  82       <div class="title"><a href="https://people.skolelinux.org/pere/blog/What_did_I_learn_from_OpenSnitch_this_summer_.html">What did I learn from OpenSnitch this summer?</a></div>
  83       <div class="date">11th June 2023</div>
  84       <div class="body"><p>With yesterdays
  85 <a href="https://www.debian.org/News/2023/20230610">release of Debian
  86 12 Bookworm</a>, I am happy to know the
  87 <a href="https://tracker.debian.org/pkg/opensnitch">the interactive
  88 application firewall OpenSnitch</a> is available for a wider audience.
  89 I have been running it for a few weeks now, and have been surprised
  90 about some of the programs connecting to the Internet.  Some programs
  91 are obviously calling out from my machine, like the NTP network based
  92 clock adjusting system and Tor to reach other Tor clients, but others
  93 were more dubious.  For example, the KDE Window manager try to look up
  94 the host name in DNS, for no apparent reason, but if this lookup is
  95 blocked the KDE desktop get periodically stuck when I use it.  Another
  96 surprise was how much Firefox call home directly to mozilla.com,
  97 mozilla.net and googleapis.com, to mention a few, when I visit other
  98 web pages.  This direct connection happen even if I told Firefox to
  99 always use a proxy, and the proxy setting is ignored for this traffic.
 100 Other surprising connections come from audacity and dirmngr (I do not
 101 use Gnome).  It took some trial and error to get a good default set of
 102 permissions.  Without it, I would get popups asking for permissions at
 103 any time, also the most inconvenient ones where I am in the middle of
 104 a time sensitive gaming session.</p>
 105
 106 <p>I suspect some application developers should rethink when then need
 107 to use network connections or DNS lookups, and recommend testing
 108 OpenSnitch (only <tt>apt install opensnitch</tt> away in Debian
 109 Bookworm) to locate and report any surprising Internet connections on
 110 your desktop machine.</p>
 111
 112 <p>At the moment the upstream developer and Debian package maintainer
 113 is working on making the system more reliable in Debian, by enabling
 114 the eBPF kernel module to track processes and connections instead of
 115 depending in content in /proc/.  This should enter unstable fairly
 116 soon.</p>
 117
 118 <p>As usual, if you use Bitcoin and want to show your support of my
 119 activities, please send Bitcoin donations to my address
 120 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 121
 122 <p><strong>Update 2023-06-12</strong>: I got a tip about
 123 <a href="https://wiki.debian.org/PrivacyIssues">a list of privacy
 124 issues in Free Software</a> and the
 125 <a href="irc://irc.debian.org/%23debian-privacy">#debian-privacy IRC
 126 channel</a> discussing these topics.</p>
 127
 128 </div>
 129       <div class="tags">
 130
 131
 132         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch</a>.
 133
 134
 135       </div>
 136     </div>
 137     <div class="padding"></div>
 138
 139     <div class="entry">
 140       <div class="title"><a href="https://people.skolelinux.org/pere/blog/wmbusmeters__parse_data_from_your_utility_meter___nice_free_software.html">wmbusmeters, parse data from your utility meter - nice free software</a></div>
 141       <div class="date">19th May 2023</div>
 142       <div class="body"><p>There is a European standard for reading utility meters like water,
 143 gas, electricity or heat distribution meters.  The
 144 <a href="https://en.wikipedia.org/wiki/Meter-Bus">Meter-Bus standard
 145 (EN 13757-2, EN 13757-3 and EN 13757–4)</a> provide a cross vendor way
 146 to talk to and collect meter data.  I ran into this standard when I
 147 wanted to monitor some heat distribution meters, and managed to find
 148 free software that could do the job.  The meters in question broadcast
 149 encrypted messages with meter information via radio, and the hardest
 150 part was to track down the encryption keys from the vendor.  With this
 151 in place I could set up a MQTT gateway to submit the meter data for
 152 graphing.</p>
 153
 154 <p>The free software systems in question,
 155 <a href="https://tracker.debian.org/pkg/rtl-wmbus">rtl-wmbus</a> to
 156 read the messages from a software defined radio, and
 157 <a href="https://tracker.debian.org/pkg/wmbusmeters">wmbusmeters</a> to
 158 decrypt and decode the content of the messages, is working very well
 159 and allowe me to get frequent updates from my meters.  I got in touch
 160 with upstream last year to see if there was any interest in publishing
 161 the packages via Debian.  I was very happy to learn that Fredrik
 162 Öhrström volunteered to maintain the packages, and I have since
 163 assisted him in getting Debian package build rules in place as well as
 164 sponsoring the packages into the Debian archive.  Sadly we completed
 165 it too late for them to become part of the next stable Debian release
 166 (Bookworm).  The wmbusmeters package just cleared the NEW queue.  It
 167 will need some work to fix a built problem, but I expect Fredrik will
 168 find a solution soon.</p>
 169
 170 <p>If you got a infrastructure meter supporting the Meter Bus
 171 standard, I strongly recommend having a look at these nice
 172 packages.</p>
 173
 174 <p>As usual, if you use Bitcoin and want to show your support of my
 175 activities, please send Bitcoin donations to my address
 176 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 177 </div>
 178       <div class="tags">
 179
 180
 181         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software</a>.
 182
 183
 184       </div>
 185     </div>
 186     <div class="padding"></div>
 187
 188     <div class="entry">
 189       <div class="title"><a href="https://people.skolelinux.org/pere/blog/The_2023_LinuxCNC_Norwegian_developer_gathering.html">The 2023 LinuxCNC Norwegian developer gathering</a></div>
 190       <div class="date">14th May 2023</div>
 191       <div class="body"><p>The LinuxCNC project is making headway these days.  A lot of
 192 patches and issues have seen activity on
 193 <a href="https://github.com/LinuxCNC/linuxcnc/">the project github
 194 pages</a> recently.  A few weeks ago there was a developer gathering
 195 over at the <a href="https://tormach.com/">Tormach</a> headquarter in
 196 Wisconsin, and now we are planning a new gathering in Norway.  If you
 197 wonder what LinuxCNC is, lets quote Wikipedia:</p>
 198
 199 <blockquote>
 200 "LinuxCNC is a software system for numerical control of
 201 machines such as milling machines, lathes, plasma cutters, routers,
 202 cutting machines, robots and hexapods. It can control up to 9 axes or
 203 joints of a CNC machine using G-code (RS-274NGC) as input. It has
 204 several GUIs suited to specific kinds of usage (touch screen,
 205 interactive development)."
 206 </blockquote>
 207
 208 <p>The Norwegian developer gathering take place the weekend June 16th
 209 to 18th this year, and is open for everyone interested in contributing
 210 to LinuxCNC.  Up to date information about the gathering can be found
 211 in
 212 <a href="https://sourceforge.net/p/emc/mailman/emc-developers/thread/sa64jp06nob.fsf%40hjemme.reinholdtsen.name/#msg37837251">the
 213 developer mailing list thread</a> where the gathering was announced.
 214 Thanks to the good people at
 215 <a href="https://www.debian.org/">Debian</a>,
 216 <a href="https://www.redpill-linpro.com/">Redpill-Linpro</a> and
 217 <a href="https://www.nuugfoundation.no/no/">NUUG Foundation</a>, we
 218 have enough sponsor funds to pay for food, and shelter for the people
 219 traveling from afar to join us.  If you would like to join the
 220 gathering, get in touch.</p>
 221
 222 <p>As usual, if you use Bitcoin and want to show your support of my
 223 activities, please send Bitcoin donations to my address
 224 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 225 </div>
 226       <div class="tags">
 227
 228
 229         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/linuxcnc">linuxcnc</a>.
 230
 231
 232       </div>
 233     </div>
 234     <div class="padding"></div>
 235
 236     <div class="entry">
 237       <div class="title"><a href="https://people.skolelinux.org/pere/blog/OpenSnitch_in_Debian_ready_for_prime_time.html">OpenSnitch in Debian ready for prime time</a></div>
 238       <div class="date">13th May 2023</div>
 239       <div class="body"><p>A bit delayed,
 240 <a href="https://tracker.debian.org/pkg/opensnitch">the interactive
 241 application firewall OpenSnitch</a> package in Debian now got the
 242 latest fixes ready for Debian Bookworm.  Because it depend on a
 243 package missing on some architectures, the autopkgtest check of the
 244 testing migration script did not understand that the tests were
 245 actually working, so the migration was delayed.  A bug in the package
 246 dependencies is also fixed, so those installing the firewall package
 247 (opensnitch) now also get the GUI admin tool (python3-opensnitch-ui)
 248 installed by default.  I am very grateful to Gustavo Iñiguez Goya for
 249 his work on getting the package ready for Debian Bookworm.</p>
 250
 251 <p>Armed with this package I have discovered some surprising
 252 connections from programs I believed were able to work completly
 253 offline, and it has already proven its worth, at least to me.  If you
 254 too want to get more familiar with the kind of programs using
 255 Internett connections on your machine, I recommend testing <tt>apt
 256 install opensnitch</tt> in Bookworm and see what you think.</p>
 257
 258 <p>The package is still not able to build its eBPF module within
 259 Debian.  Not sure how much work it would be to get it working, but
 260 suspect some kernel related packages need to be extended with more
 261 header files to get it working.</p>
 262
 263 <p>As usual, if you use Bitcoin and want to show your support of my
 264 activities, please send Bitcoin donations to my address
 265 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 266 </div>
 267       <div class="tags">
 268
 269
 270         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch</a>.
 271
 272
 273       </div>
 274     </div>
 275     <div class="padding"></div>
 276
 277     <div class="entry">
 278       <div class="title"><a href="https://people.skolelinux.org/pere/blog/Speech_to_text__she_APTly_whispered__how_hard_can_it_be_.html">Speech to text, she APTly whispered, how hard can it be?</a></div>
 279       <div class="date">23rd April 2023</div>
 280       <div class="body"><p>While visiting a convention during Easter, it occurred to me that
 281 it would be great if I could have a digital Dictaphone with
 282 transcribing capabilities, providing me with texts to cut-n-paste into
 283 stuff I need to write.  The background is that long drives often bring
 284 up the urge to write on texts I am working on, which of course is out
 285 of the question while driving.  With the release of
 286 <a href="https://github.com/openai/whisper/">OpenAI Whisper</a>, this
 287 seem to be within reach with Free Software, so I decided to give it a
 288 go.  OpenAI Whisper is a Linux based neural network system to read in
 289 audio files and provide text representation of the speech in that
 290 audio recording.  It handle multiple languages and according to its
 291 creators even can translate into a different language than the spoken
 292 one.  I have not tested the latter feature.  It can either use the CPU
 293 or a GPU with CUDA support.  As far as I can tell, CUDA in practice
 294 limit that feature to NVidia graphics cards.  I have few of those, as
 295 they do not work great with free software drivers, and have not tested
 296 the GPU option.  While looking into the matter, I did discover some
 297 work to provide CUDA support on non-NVidia GPUs, and some work with
 298 the library used by Whisper to port it to other GPUs, but have not
 299 spent much time looking into GPU support yet.  I've so far used an old
 300 X220 laptop as my test machine, and only transcribed using its
 301 CPU.</p>
 302
 303 <p>As it from a privacy standpoint is unthinkable to use computers
 304 under control of someone else (aka a "cloud" service) to transcribe
 305 ones thoughts and personal notes, I want to run the transcribing
 306 system locally on my own computers.  The only sensible approach to me
 307 is to make the effort I put into this available for any Linux user and
 308 to upload the needed packages into Debian.  Looking at Debian Bookworm, I
 309 discovered that only three packages were missing,
 310 <a href="https://bugs.debian.org/1034307">tiktoken</a>,
 311 <a href="https://bugs.debian.org/1034144">triton</a>, and
 312 <a href="https://bugs.debian.org/1034091">openai-whisper</a>.  For a while
 313 I also believed
 314 <a href="https://bugs.debian.org/1034286">ffmpeg-python</a> was
 315 needed, but as its
 316 <a href="https://github.com/kkroening/ffmpeg-python/issues/760">upstream
 317 seem to have vanished</a> I found it safer
 318 <a href="https://github.com/openai/whisper/pull/1242">to rewrite
 319 whisper</a> to stop depending on in than to introduce ffmpeg-python
 320 into Debian.  I decided to place these packages under the umbrella of
 321 <a href="https://salsa.debian.org/deeplearning-team">the Debian Deep
 322 Learning Team</a>, which seem like the best team to look after such
 323 packages.  Discussing the topic within the group also made me aware
 324 that the triton package was already a future dependency of newer
 325 versions of the torch package being planned, and would be needed after
 326 Bookworm is released.</p>
 327
 328 <p>All required code packages have been now waiting in
 329 <a href="https://ftp-master.debian.org/new.html">the Debian NEW
 330 queue</a> since Wednesday, heading for Debian Experimental until
 331 Bookworm is released.  An unsolved issue is how to handle the neural
 332 network models used by Whisper.  The default behaviour of Whisper is
 333 to require Internet connectivity and download the model requested to
 334 <tt>~/.cache/whisper/</tt> on first invocation.  This obviously would
 335 fail <a href="https://people.debian.org/~bap/dfsg-faq.html">the
 336 deserted island test of free software</a> as the Debian packages would
 337 be unusable for someone stranded with only the Debian archive and solar
 338 powered computer on a deserted island.</p>
 339
 340 <p>Because of this, I would love to include the models in the Debian
 341 mirror system.  This is problematic, as the models are very large
 342 files, which would put a heavy strain on the Debian mirror
 343 infrastructure around the globe.  The strain would be even higher if
 344 the models change often, which luckily as far as I can tell they do
 345 not.  The small model, which according to its creator is most useful
 346 for English and in my experience is not doing a great job there
 347 either, is 462 MiB (deb is 414 MiB).  The medium model, which to me
 348 seem to handle English speech fairly well is 1.5 GiB (deb is 1.3 GiB)
 349 and the large model is 2.9 GiB (deb is 2.6 GiB).  I would assume
 350 everyone with enough resources would prefer to use the large model for
 351 highest quality.  I believe the models themselves would have to go
 352 into the non-free part of the Debian archive, as they are not really
 353 including any useful source code for updating the models.  The
 354 "source", aka the model training set, according to the creators
 355 consist of "680,000 hours of multilingual and multitask supervised
 356 data collected from the web", which to me reads material with both
 357 unknown copyright terms, unavailable to the general public.  In other
 358 words, the source is not available according to the Debian Free
 359 Software Guidelines and the model should be considered non-free.</p>
 360
 361 <p>I asked the Debian FTP masters for advice regarding uploading a
 362 model package on their IRC channel, and based on the feedback there it
 363 is still unclear to me if such package would be accepted into the
 364 archive.  In any case I wrote build rules for a
 365 <a href="https://salsa.debian.org/deeplearning-team/openai-whisper-model">OpenAI
 366 Whisper model package</a> and
 367 <a href="https://github.com/openai/whisper/pull/1257">modified the
 368 Whisper code base</a> to prefer shared files under <tt>/usr/</tt> and
 369 <tt>/var/</tt> over user specific files in <tt>~/.cache/whisper/</tt>
 370 to be able to use these model packages, to prepare for such
 371 possibility.  One solution might be to include only one of the models
 372 (small or medium, I guess) in the Debian archive, and ask people to
 373 download the others from the Internet.  Not quite sure what to do
 374 here, and advice is most welcome (use the debian-ai mailing list).</p>
 375
 376 <p>To make it easier to test the new packages while I wait for them to
 377 clear the NEW queue, I created an APT source targeting bookworm.  I
 378 selected Bookworm instead of Bullseye, even though I know the latter
 379 would reach more users, is that some of the required dependencies are
 380 missing from Bullseye and I during this phase of testing did not want
 381 to backport a lot of packages just to get up and running.</p>
 382
 383 <p>Here is a recipe to run as user root if you want to test OpenAI
 384 Whisper using Debian packages on your Debian Bookworm installation,
 385 first adding the APT repository GPG key to the list of trusted keys,
 386 then setting up the APT repository and finally installing the packages
 387 and one of the models:</p>
 388
 389 <p><pre>
 390 curl https://geekbay.nuug.no/~pere/openai-whisper/D78F5C4796F353D211B119E28200D9B589641240.asc \
 391   -o /etc/apt/trusted.gpg.d/pere-whisper.asc
 392 mkdir -p /etc/apt/sources.list.d
 393 cat > /etc/apt/sources.list.d/pere-whisper.list &lt;&lt;EOF
 394 deb https://geekbay.nuug.no/~pere/openai-whisper/ bookworm main
 395 deb-src https://geekbay.nuug.no/~pere/openai-whisper/ bookworm main
 396 EOF
 397 apt update
 398 apt install openai-whisper
 399 </pre></p>
 400
 401 <p>The package work for me, but have not yet been tested on any other
 402 computer than my own.  With it, I have been able to (badly) transcribe
 403 a 2 minute 40 second Norwegian audio clip to test using the small
 404 model.  This took 11 minutes and around 2.2 GiB of RAM.  Transcribing
 405 the same file with the medium model gave a accurate text in 77 minutes
 406 using around 5.2 GiB of RAM.  My test machine had too little memory to
 407 test the large model, which I believe require 11 GiB of RAM.  In
 408 short, this now work for me using Debian packages, and I hope it will
 409 for you and everyone else once the packages enter Debian.</p>
 410
 411 <p>Now I can start on the audio recording part of this project.</p>
 412
 413 <p>As usual, if you use Bitcoin and want to show your support of my
 414 activities, please send Bitcoin donations to my address
 415 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 416 </div>
 417       <div class="tags">
 418
 419
 420         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="https://people.skolelinux.org/pere/blog/tags/video">video</a>.
 421
 422
 423       </div>
 424     </div>
 425     <div class="padding"></div>
 426
 427     <div class="entry">
 428       <div class="title"><a href="https://people.skolelinux.org/pere/blog/rtlsdr_scanner__software_defined_radio_frequency_scanner_for_Linux____nice_free_software.html">rtlsdr-scanner, software defined radio frequency scanner for Linux  - nice free software</a></div>
 429       <div class="date"> 7th April 2023</div>
 430       <div class="body"><p>Today I finally found time to track down a useful radio frequency
 431 scanner for my software defined radio.  Just for fun I tried to locate
 432 the radios used in the areas, and a good start would be to scan all
 433 the frequencies to see what is in use.  I've tried to find a useful
 434 program earlier, but ran out of time before I managed to find a useful
 435 tool.  This time I was more successful, and after a few false leads I
 436 found a description of
 437 <a href="https://www.kali.org/tools/rtlsdr-scanner/">rtlsdr-scanner
 438 over at the Kali site</a>, and was able to track down
 439 <a href="https://gitlab.com/kalilinux/packages/rtlsdr-scanner.git">the
 440 Kali package git repository</a> to build a deb package for the
 441 scanner.  Sadly the package is missing from the Debian project itself,
 442 at least in Debian Bullseye.  Two runtime dependencies,
 443 <a href="https://gitlab.com/kalilinux/packages/python-visvis.git">python-visvis</a>
 444 and
 445 <a href="https://gitlab.com/kalilinux/packages/python-rtlsdr.git">python-rtlsdr</a>
 446 had to be built and installed separately.  Luckily '<tt>gbp
 447 buildpackage</tt>' handled them just fine and no further packages had
 448 to be manually built.  The end result worked out of the box after
 449 installation.</p>
 450
 451 <p>My initial scans for FM channels worked just fine, so I knew the
 452 scanner was functioning.  But when I tried to scan every frequency
 453 from 100 to 1000 MHz, the program stopped unexpectedly near the
 454 completion.  After some debugging I discovered USB software radio I
 455 used rejected frequencies above 948 MHz, triggering a unreported
 456 exception breaking the scan.  Changing the scan to end at 957 worked
 457 better.  I similarly found the lower limit to be around 15, and ended
 458 up with the following full scan:</p>
 459
 460 <p><a href="https://people.skolelinux.org/pere/blog/images/2023-04-07-radio-freq-scanning.png"><img src="https://people.skolelinux.org/pere/blog/images/2023-04-07-radio-freq-scanning.png" width="100%"></a></p>
 461
 462 <p>Saving the scan did not work, but exporting it as a CSV file worked
 463 just fine.  I ended up with around 477k CVS lines with dB level for
 464 the given frequency.</p>
 465
 466 <p>The save failure seem to be a missing UTF-8 encoding issue in the
 467 python code.  Will see if I can find time to send a patch
 468 <a href="https://github.com/CdeMills/RTLSDR-Scanner/">upstream</a>
 469 later to fix this exception:</p>
 470
 471 <pre>
 472 Traceback (most recent call last):
 473   File "/usr/lib/python3/dist-packages/rtlsdr_scanner/main_window.py", line 485, in __on_save
 474     save_plot(fullName, self.scanInfo, self.spectrum, self.locations)
 475   File "/usr/lib/python3/dist-packages/rtlsdr_scanner/file.py", line 408, in save_plot
 476     handle.write(json.dumps(data, indent=4))
 477 TypeError: a bytes-like object is required, not 'str'
 478 Traceback (most recent call last):
 479   File "/usr/lib/python3/dist-packages/rtlsdr_scanner/main_window.py", line 485, in __on_save
 480     save_plot(fullName, self.scanInfo, self.spectrum, self.locations)
 481   File "/usr/lib/python3/dist-packages/rtlsdr_scanner/file.py", line 408, in save_plot
 482     handle.write(json.dumps(data, indent=4))
 483 TypeError: a bytes-like object is required, not 'str'
 484 </pre>
 485
 486 <p>As usual, if you use Bitcoin and want to show your support of my
 487 activities, please send Bitcoin donations to my address
 488 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 489 </div>
 490       <div class="tags">
 491
 492
 493         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software</a>.
 494
 495
 496       </div>
 497     </div>
 498     <div class="padding"></div>
 499
 500     <div class="entry">
 501       <div class="title"><a href="https://people.skolelinux.org/pere/blog/OpenSnitch_available_in_Debian_Sid_and_Bookworm.html">OpenSnitch available in Debian Sid and Bookworm</a></div>
 502       <div class="date">25th February 2023</div>
 503       <div class="body"><p>Thanks to the efforts of the OpenSnitch lead developer Gustavo
 504 Iñiguez Goya allowing me to sponsor the upload,
 505 <a href="https://tracker.debian.org/pkg/opensnitch">the interactive
 506 application firewall OpenSnitch</a> is now available in Debian
 507 Testing, soon to become the next stable release of Debian.</p>
 508
 509 <p>This is a package which set up a network firewall on one or more
 510 machines, which is controlled by a graphical user interface that will
 511 ask the user if a program should be allowed to connect to the local
 512 network or the Internet.  If some background daemon is trying to dial
 513 home, it can be blocked from doing so with a simple mouse click, or by
 514 default simply by not doing anything when the GUI question dialog pop
 515 up.  A list of all programs discovered using the network is provided
 516 in the GUI, giving the user an overview of how the machine(s) programs
 517 use the network.</p>
 518
 519 <p>OpenSnitch was uploaded for NEW processing about a month ago, and I
 520 had little hope of it getting accepted and shaping up in time for the
 521 package freeze, but the Debian ftpmasters proved to be amazingly quick
 522 at checking out the package and it was accepted into the archive about
 523 week after the first upload.  It is now team maintained under the Go
 524 language team umbrella.  A few fixes to the default setup is only in
 525 Sid, and should migrate to Testing/Bookworm in a week.</p>
 526
 527 <p>During testing I ran into an
 528 <a href="https://github.com/evilsocket/opensnitch/issues/813">issue
 529 with Minecraft server broadcasts disappearing</a>, which was quickly
 530 resolved by the developer with a patch and a proposed configuration
 531 change.  I've been told this was caused by the Debian packages default
 532 use if /proc/ information to track down kernel status, instead of the
 533 newer eBPF module that can be used.  The reason is simply that
 534 upstream and I have failed to find a way to build the eBPF modules for
 535 OpenSnitch without a complete configured Linux kernel source tree,
 536 which as far as we can tell is unavailable as a build dependency in
 537 Debian.  We tried unsuccessfully so far to use the kernel-headers
 538 package.  It would be great if someone could provide some clues how to
 539 build eBPF modules on build daemons in Debian, possibly without the full
 540 kernel source.</p>
 541
 542 <p>As usual, if you use Bitcoin and want to show your support of my
 543 activities, please send Bitcoin donations to my address
 544 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 545 </div>
 546       <div class="tags">
 547
 548
 549         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch</a>.
 550
 551
 552       </div>
 553     </div>
 554     <div class="padding"></div>
 555
 556     <div class="entry">
 557       <div class="title"><a href="https://people.skolelinux.org/pere/blog/Is_the_desktop_recommending_your_program_for_opening_its_files_.html">Is the desktop recommending your program for opening its files?</a></div>
 558       <div class="date">29th January 2023</div>
 559       <div class="body"><p>Linux desktop systems
 560 <a href="https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html">have
 561 standardized</a> how programs present themselves to the desktop
 562 system.  If a package include a .desktop file in
 563 /usr/share/applications/, Gnome, KDE, LXDE, Xfce and the other desktop
 564 environments will pick up the file and use its content to generate the
 565 menu of available programs in the system.  A lesser known fact is that
 566 a package can also explain to the desktop system how to recognize the
 567 files created by the program in question, and use it to open these
 568 files on request, for example via a GUI file browser.</p>
 569
 570 <p>A while back I ran into a package that did not tell the desktop
 571 system how to recognize its files and was not used to open its files
 572 in the file browser and fixed it.  In the process I wrote a simple
 573 debian/tests/ script to ensure the setup keep working.  It might be
 574 useful for other packages too, to ensure any future version of the
 575 package keep handling its own files.</p>
 576
 577 <p>For this to work the file format need a useful MIME type that can
 578 be used to identify the format.  If the file format do not yet have a
 579 MIME type, it should define one and preferably also
 580 <a href="https://www.iana.org/assignments/media-types/media-types.xhtml">register
 581 it with IANA</a> to ensure the MIME type string is reserved.</p>
 582
 583 <p>The script uses the <tt>xdg-mime</tt> program from xdg-utils to
 584 query the database of standardized package information and ensure it
 585 return sensible values.  It also need the location of an example file
 586 for xdg-mime to guess the format of.</p>
 587
 588 <pre>
 589 #!/bin/sh
 590 #
 591 # Author: Petter Reinholdtsen
 592 # License: GPL v2 or later at your choice.
 593 #
 594 # Validate the MIME setup, making sure motor types have
 595 # application/vnd.openmotor+yaml associated with them and is connected
 596 # to the openmotor desktop file.
 597
 598 retval=0
 599
 600 mimetype="application/vnd.openmotor+yaml"
 601 testfile="test/data/real/o3100/motor.ric"
 602 mydesktopfile="openmotor.desktop"
 603
 604 filemime="$(xdg-mime query filetype "$testfile")"
 605
 606 if [ "$mimetype" != "$filemime" ] ; then
 607     retval=1
 608     echo "error: xdg-mime claim motor file MIME type is $filemine, not $mimetype"
 609 else
 610     echo "success: xdg-mime report correct mime type $mimetype for motor file"
 611 fi
 612
 613 desktop=$(xdg-mime query default "$mimetype")
 614
 615 if [ "$mydesktopfile" != "$desktop" ]; then
 616     retval=1
 617     echo "error: xdg-mime claim motor file should be handled by $desktop, not $mydesktopfile"
 618 else
 619     echo "success: xdg-mime agree motor file should be handled by $mydesktopfile"
 620 fi
 621
 622 exit $retval
 623 </pre>
 624
 625 <p>It is a simple way to ensure your users are not very surprised when
 626 they try to open one of your file formats in their file browser.</p>
 627
 628 <p>As usual, if you use Bitcoin and want to show your support of my
 629 activities, please send Bitcoin donations to my address
 630 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 631 </div>
 632       <div class="tags">
 633
 634
 635         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>.
 636
 637
 638       </div>
 639     </div>
 640     <div class="padding"></div>
 641
 642     <div class="entry">
 643       <div class="title"><a href="https://people.skolelinux.org/pere/blog/Opensnitch__the_application_level_interactive_firewall__heading_into_the_Debian_archive.html">Opensnitch, the application level interactive firewall, heading into the Debian archive</a></div>
 644       <div class="date">22nd January 2023</div>
 645       <div class="body"><p>While reading a
 646 <a href="https://sneak.berlin/20230115/macos-scans-your-local-files-now/">blog
 647 post claiming MacOS X recently started scanning local files and
 648 reporting information about them to Apple</a>, even on a machine where
 649 all such callback features had been disabled, I came across a
 650 description of the Little Snitch application for MacOS X.  It seemed
 651 like a very nice tool to have in the tool box, and I decided to see if
 652 something similar was available for Linux.</p>
 653
 654 <p>It did not take long to find
 655 <a href="https://github.com/evilsocket/opensnitch">the OpenSnitch
 656 package</a>, which has been in development since 2017, and now is in
 657 version 1.5.0.  It has had a
 658 <a href="https://bugs.debian.org/909567">request for Debian
 659 packaging</a> since 2018, but no-one completed the job so far.  Just
 660 for fun, I decided to see if I could help, and I was very happy to
 661 discover that
 662 <a href="https://github.com/evilsocket/opensnitch/issues/304">upstream
 663 want a Debian package too</a>.</p>
 664
 665 <p>After struggling a bit with getting the program to run, figuring
 666 out building Go programs (and a little failed detour to look at eBPF
 667 builds too - help needed), I am very happy to report that I am
 668 sponsoring upstream to maintain the package in Debian, and it has
 669 since this morning been waiting in NEW for the ftpmasters to have a
 670 look.  Perhaps it can get into the archive in time for the Bookworm
 671 release?</p>
 672
 673 <p>As usual, if you use Bitcoin and want to show your support of my
 674 activities, please send Bitcoin donations to my address
 675 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 676 </div>
 677       <div class="tags">
 678
 679
 680         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch</a>.
 681
 682
 683       </div>
 684     </div>
 685     <div class="padding"></div>
 686
 687     <p style="text-align: right;"><a href="index.rss"><img src="https://people.skolelinux.org/pere/blog/xml.gif" alt="RSS feed" width="36" height="14" /></a></p>
 688     <div id="sidebar">
 689
 690
 691
 692 <h2>Archive</h2>
 693 <ul>
 694
 695 <li>2023
 696 <ul>
 697
 698 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/01/">January (3)</a></li>
 699
 700 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/02/">February (1)</a></li>
 701
 702 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/04/">April (2)</a></li>
 703
 704 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/05/">May (3)</a></li>
 705
 706 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/06/">June (1)</a></li>
 707
 708 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/08/">August (1)</a></li>
 709
 710 </ul></li>
 711
 712 <li>2022
 713 <ul>
 714
 715 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/02/">February (1)</a></li>
 716
 717 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/03/">March (3)</a></li>
 718
 719 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/04/">April (2)</a></li>
 720
 721 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/06/">June (2)</a></li>
 722
 723 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/07/">July (1)</a></li>
 724
 725 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/09/">September (1)</a></li>
 726
 727 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/10/">October (1)</a></li>
 728
 729 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/12/">December (1)</a></li>
 730
 731 </ul></li>
 732
 733 <li>2021
 734 <ul>
 735
 736 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/01/">January (2)</a></li>
 737
 738 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/02/">February (1)</a></li>
 739
 740 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/05/">May (1)</a></li>
 741
 742 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/06/">June (1)</a></li>
 743
 744 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/07/">July (3)</a></li>
 745
 746 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/08/">August (1)</a></li>
 747
 748 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/09/">September (1)</a></li>
 749
 750 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/10/">October (1)</a></li>
 751
 752 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/12/">December (1)</a></li>
 753
 754 </ul></li>
 755
 756 <li>2020
 757 <ul>
 758
 759 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/02/">February (2)</a></li>
 760
 761 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/03/">March (2)</a></li>
 762
 763 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/04/">April (2)</a></li>
 764
 765 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/05/">May (3)</a></li>
 766
 767 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/06/">June (2)</a></li>
 768
 769 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/07/">July (1)</a></li>
 770
 771 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/09/">September (1)</a></li>
 772
 773 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/10/">October (1)</a></li>
 774
 775 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/11/">November (1)</a></li>
 776
 777 </ul></li>
 778
 779 <li>2019
 780 <ul>
 781
 782 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/01/">January (4)</a></li>
 783
 784 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/02/">February (3)</a></li>
 785
 786 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/03/">March (3)</a></li>
 787
 788 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/05/">May (2)</a></li>
 789
 790 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/06/">June (5)</a></li>
 791
 792 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/07/">July (2)</a></li>
 793
 794 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/08/">August (1)</a></li>
 795
 796 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/09/">September (1)</a></li>
 797
 798 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/11/">November (1)</a></li>
 799
 800 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/12/">December (4)</a></li>
 801
 802 </ul></li>
 803
 804 <li>2018
 805 <ul>
 806
 807 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 808
 809 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 810
 811 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 812
 813 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 814
 815 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 816
 817 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 818
 819 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 820
 821 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 822
 823 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/10/">October (5)</a></li>
 824
 825 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/11/">November (2)</a></li>
 826
 827 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/12/">December (4)</a></li>
 828
 829 </ul></li>
 830
 831 <li>2017
 832 <ul>
 833
 834 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 835
 836 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 837
 838 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 839
 840 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 841
 842 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 843
 844 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 845
 846 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 847
 848 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 849
 850 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 851
 852 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 853
 854 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 855
 856 </ul></li>
 857
 858 <li>2016
 859 <ul>
 860
 861 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 862
 863 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 864
 865 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 866
 867 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 868
 869 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 870
 871 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 872
 873 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 874
 875 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 876
 877 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 878
 879 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 880
 881 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 882
 883 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 884
 885 </ul></li>
 886
 887 <li>2015
 888 <ul>
 889
 890 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 891
 892 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 893
 894 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 895
 896 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 897
 898 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 899
 900 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 901
 902 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 903
 904 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 905
 906 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 907
 908 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 909
 910 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 911
 912 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 913
 914 </ul></li>
 915
 916 <li>2014
 917 <ul>
 918
 919 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 920
 921 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 922
 923 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 924
 925 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 926
 927 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 928
 929 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 930
 931 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 932
 933 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 934
 935 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 936
 937 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 938
 939 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 940
 941 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 942
 943 </ul></li>
 944
 945 <li>2013
 946 <ul>
 947
 948 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 949
 950 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 951
 952 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 953
 954 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 955
 956 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 957
 958 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 959
 960 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 961
 962 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 963
 964 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 965
 966 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 967
 968 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 969
 970 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 971
 972 </ul></li>
 973
 974 <li>2012
 975 <ul>
 976
 977 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 978
 979 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 980
 981 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 982
 983 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 984
 985 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 986
 987 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 988
 989 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 990
 991 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 992
 993 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 994
 995 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 996
 997 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 998
 999 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
1000
1001 </ul></li>
1002
1003 <li>2011
1004 <ul>
1005
1006 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
1007
1008 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
1009
1010 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
1011
1012 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
1013
1014 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
1015
1016 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
1017
1018 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
1019
1020 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
1021
1022 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
1023
1024 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
1025
1026 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
1027
1028 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
1029
1030 </ul></li>
1031
1032 <li>2010
1033 <ul>
1034
1035 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1036
1037 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1038
1039 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1040
1041 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1042
1043 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1044
1045 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1046
1047 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1048
1049 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1050
1051 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1052
1053 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1054
1055 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1056
1057 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1058
1059 </ul></li>
1060
1061 <li>2009
1062 <ul>
1063
1064 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1065
1066 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1067
1068 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1069
1070 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1071
1072 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1073
1074 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1075
1076 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1077
1078 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1079
1080 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1081
1082 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1083
1084 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1085
1086 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1087
1088 </ul></li>
1089
1090 <li>2008
1091 <ul>
1092
1093 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1094
1095 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1096
1097 </ul></li>
1098
1099 </ul>
1100
1101
1102
1103 <h2>Tags</h2>
1104 <ul>
1105
1106  <li><a href="https://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (19)</a></li>
1107
1108  <li><a href="https://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1109
1110  <li><a href="https://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1111
1112  <li><a href="https://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1113
1114  <li><a href="https://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (9)</a></li>
1115
1116  <li><a href="https://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (12)</a></li>
1117
1118  <li><a href="https://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
1119
1120  <li><a href="https://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1121
1122  <li><a href="https://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1123
1124  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian">debian (194)</a></li>
1125
1126  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (159)</a></li>
1127
1128  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (9)</a></li>
1129
1130  <li><a href="https://people.skolelinux.org/pere/blog/tags/digistan">digistan (11)</a></li>
1131
1132  <li><a href="https://people.skolelinux.org/pere/blog/tags/dld">dld (18)</a></li>
1133
1134  <li><a href="https://people.skolelinux.org/pere/blog/tags/docbook">docbook (30)</a></li>
1135
1136  <li><a href="https://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1137
1138  <li><a href="https://people.skolelinux.org/pere/blog/tags/english">english (451)</a></li>
1139
1140  <li><a href="https://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1141
1142  <li><a href="https://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (14)</a></li>
1143
1144  <li><a href="https://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (34)</a></li>
1145
1146  <li><a href="https://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1147
1148  <li><a href="https://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (20)</a></li>
1149
1150  <li><a href="https://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1151
1152  <li><a href="https://people.skolelinux.org/pere/blog/tags/intervju">intervju (43)</a></li>
1153
1154  <li><a href="https://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
1155
1156  <li><a href="https://people.skolelinux.org/pere/blog/tags/kart">kart (23)</a></li>
1157
1158  <li><a href="https://people.skolelinux.org/pere/blog/tags/kodi">kodi (6)</a></li>
1159
1160  <li><a href="https://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1161
1162  <li><a href="https://people.skolelinux.org/pere/blog/tags/lego">lego (5)</a></li>
1163
1164  <li><a href="https://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1165
1166  <li><a href="https://people.skolelinux.org/pere/blog/tags/linuxcnc">linuxcnc (5)</a></li>
1167
1168  <li><a href="https://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1169
1170  <li><a href="https://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1171
1172  <li><a href="https://people.skolelinux.org/pere/blog/tags/madewithcc">madewithcc (3)</a></li>
1173
1174  <li><a href="https://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1175
1176  <li><a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (46)</a></li>
1177
1178  <li><a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (15)</a></li>
1179
1180  <li><a href="https://people.skolelinux.org/pere/blog/tags/noark5">noark5 (23)</a></li>
1181
1182  <li><a href="https://people.skolelinux.org/pere/blog/tags/norsk">norsk (320)</a></li>
1183
1184  <li><a href="https://people.skolelinux.org/pere/blog/tags/nuug">nuug (198)</a></li>
1185
1186  <li><a href="https://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (40)</a></li>
1187
1188  <li><a href="https://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1189
1190  <li><a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch (4)</a></li>
1191
1192  <li><a href="https://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (75)</a></li>
1193
1194  <li><a href="https://people.skolelinux.org/pere/blog/tags/personvern">personvern (114)</a></li>
1195
1196  <li><a href="https://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1197
1198  <li><a href="https://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1199
1200  <li><a href="https://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1201
1202  <li><a href="https://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1203
1204  <li><a href="https://people.skolelinux.org/pere/blog/tags/robot">robot (17)</a></li>
1205
1206  <li><a href="https://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1207
1208  <li><a href="https://people.skolelinux.org/pere/blog/tags/ruter">ruter (7)</a></li>
1209
1210  <li><a href="https://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1211
1212  <li><a href="https://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (59)</a></li>
1213
1214  <li><a href="https://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1215
1216  <li><a href="https://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1217
1218  <li><a href="https://people.skolelinux.org/pere/blog/tags/standard">standard (74)</a></li>
1219
1220  <li><a href="https://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (7)</a></li>
1221
1222  <li><a href="https://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (14)</a></li>
1223
1224  <li><a href="https://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (64)</a></li>
1225
1226  <li><a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (5)</a></li>
1227
1228  <li><a href="https://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1229
1230  <li><a href="https://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1231
1232  <li><a href="https://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (20)</a></li>
1233
1234  <li><a href="https://people.skolelinux.org/pere/blog/tags/video">video (79)</a></li>
1235
1236  <li><a href="https://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1237
1238  <li><a href="https://people.skolelinux.org/pere/blog/tags/web">web (42)</a></li>
1239
1240 </ul>
1241
1242
1243     </div>
1244     <p style="text-align: right">
1245  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1246 </p>
1247
1248   </body>
1249 </html>