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