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  13  <h1>
  14      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16  </h1>
  17
  18 </div>
  19
  20
  21
  22     <div class="entry">
  23       <div class="title"><a href="http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html">A bit more on privacy respecting health monitor / fitness tracker</a></div>
  24       <div class="date">13th August 2018</div>
  25       <div class="body"><p>A few days ago, I wondered if there are any privacy respecting
  26 health monitors and/or fitness trackers available for sale these days.
  27 I would like to buy one, but do not want to share my personal data
  28 with strangers, nor be forced to have a mobile phone to get data out
  29 of the unit.  I've received some ideas, and would like to share them
  30 with you.
  31
  32 One interesting data point was a pointer to a Free Software app for
  33 Android called
  34 <a href="https://github.com/Freeyourgadget/Gadgetbridge/">Gadgetbridge</a>.
  35 It provide cloudless collection and storing of data from a variety of
  36 trackers.  Its
  37 <a href="https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices">list
  38 of supported devices</a> is a good indicator for units where the
  39 protocol is fairly open, as it is obviously being handled by Free
  40 Software.  Other units are reportedly encrypting the collected
  41 information with their own public key, making sure only the vendor
  42 cloud service is able to extract data from the unit.  The people
  43 contacting me about it said they were using
  44 <a href="https://us.amazfit.com/shop/bip?variant=336750">Amazfit
  45 Bip</a> and
  46 <a href="http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/">Xiaomi
  47 Band 3</a>.</p>
  48
  49 <p>I also got a suggestion to look at some of the units from Garmin.
  50 I was told their GPS watches can be connected via USB and show up as a
  51 USB storage device with
  52 <a href="https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html">Garmin
  53 FIT files</a> containing the collected measurements.  While
  54 proprietary, FIT files apparently can be read at least by
  55 <a href="https://www.gpsbabel.org">GPSBabel</a> and the
  56 <a href="https://apps.nextcloud.com/apps/gpxpod">GpxPod</a> Nextcloud
  57 app.  It is unclear to me if they can read step count and heart rate
  58 data.  The person I talked to was using a Garmin
  59 <a href="https://buy.garmin.com/en-US/US/p/564291">Garmin Forerunner
  60 935</a>, which is a fairly expensive unit.  I doubt it is worth it for
  61 a unit where the vendor clearly is trying its best to move from open
  62 to closed systems.  I still remember when Garmin dropped NMEA support
  63 in its GPSes.</p>
  64
  65 <p>A final idea was to build ones own unit, perhaps by basing it on a
  66 wearable hardware platforms like
  67 <a href="https://learn.adafruit.com/flora-geo-watch">the Flora Geo
  68 Watch</a>.  Sound like fun, but I had more money than time to spend on
  69 the topic, so I suspect it will have to wait for another time.</p>
  70
  71 <p>While I was working on tracking down links, I came across an
  72 inspiring TED talk by Dave Debronkart about
  73 <a href="https://archive.org/details/DavedeBronkart_2010X">being a
  74 e-patient</a>, and discovered the web site
  75 <a href="https://participatorymedicine.org/epatients/">Participatory
  76 Medicine</a>.  If you too want to track your own health and fitness
  77 without having information about your private life floating around on
  78 computers owned by others, I recommend checking it out.</p>
  79
  80 <p>As usual, if you use Bitcoin and want to show your support of my
  81 activities, please send Bitcoin donations to my address
  82 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  83 </div>
  84       <div class="tags">
  85
  86
  87         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
  88
  89
  90       </div>
  91     </div>
  92     <div class="padding"></div>
  93
  94     <div class="entry">
  95       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html">Privacy respecting health monitor / fitness tracker?</a></div>
  96       <div class="date"> 7th August 2018</div>
  97       <div class="body"><p>Dear lazyweb,</p>
  98
  99 <p>I wonder, is there a fitness tracker / health monitor available for
 100 sale today that respect the users privacy?  With this I mean a
 101 watch/bracelet capable of measuring pulse rate and other
 102 fitness/health related values (and by all means, also the correct time
 103 and location if possible), which is <strong>only</strong> provided for
 104 me to extract/read from the unit with computer without a radio beacon
 105 and Internet connection.  In other words, it do not depend on a cell
 106 phone app, and do make the measurements available via other peoples
 107 computer (aka "the cloud").  The collected data should be available
 108 using only free software.  I'm not interested in depending on some
 109 non-free software that will leave me high and dry some time in the
 110 future.  I've been unable to find any such unit.  I would like to buy
 111 it.  The ones I have seen for sale here in Norway are proud to report
 112 that they share my health data with strangers (aka "cloud enabled").
 113 Is there an alternative?  I'm not interested in giving money to people
 114 requiring me to accept "privacy terms" to allow myself to measure my
 115 own health.</p>
 116
 117 <p>As usual, if you use Bitcoin and want to show your support of my
 118 activities, please send Bitcoin donations to my address
 119 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 120 </div>
 121       <div class="tags">
 122
 123
 124         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 125
 126
 127       </div>
 128     </div>
 129     <div class="padding"></div>
 130
 131     <div class="entry">
 132       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html">Sharing images with friends and family using RSS and EXIF/XMP metadata</a></div>
 133       <div class="date">31st July 2018</div>
 134       <div class="body"><p>For a while now, I have looked for a sensible way to share images
 135 with my family using a self hosted solution, as it is unacceptable to
 136 place images from my personal life under the control of strangers
 137 working for data hoarders like Google or Dropbox.  The last few days I
 138 have drafted an approach that might work out, and I would like to
 139 share it with you.  I would like to publish images on a server under
 140 my control, and point some Internet connected display units using some
 141 free and open standard to the images I published.  As my primary
 142 language is not limited to ASCII, I need to store metadata using
 143 UTF-8.  Many years ago, I hoped to find a digital photo frame capable
 144 of reading a RSS feed with image references (aka using the
 145 &lt;enclosure&gt; RSS tag), but was unable to find a current supplier
 146 of such frames.  In the end I gave up that approach.</p>
 147
 148 <p>Some months ago, I discovered that
 149 <a href="https://www.jwz.org/xscreensaver/">XScreensaver</a> is able to
 150 read images from a RSS feed, and used it to set up a screen saver on
 151 my home info screen, showing images from the Daily images feed from
 152 NASA.  This proved to work well.  More recently I discovered that
 153 <a href="https://kodi.tv">Kodi</a> (both using
 154 <a href="https://www.openelec.tv/">OpenELEC</a> and
 155 <a href="https://libreelec.tv">LibreELEC</a>) provide the
 156 <a href="https://github.com/grinsted/script.screensaver.feedreader">Feedreader</a>
 157 screen saver capable of reading a RSS feed with images and news.  For
 158 fun, I used it this summer to test Kodi on my parents TV by hooking up
 159 a Raspberry PI unit with LibreELEC, and wanted to provide them with a
 160 screen saver showing selected pictures from my selection.</p>
 161
 162 <p>Armed with motivation and a test photo frame, I set out to generate
 163 a RSS feed for the Kodi instance.  I adjusted my <a
 164 href="https://freedombox.org/">Freedombox</a> instance, created
 165 /var/www/html/privatepictures/, wrote a small Perl script to extract
 166 title and description metadata from the photo files and generate the
 167 RSS file.  I ended up using Perl instead of python, as the
 168 libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
 169 tags I ended up using, while python3-exif did not.  The relevant EXIF
 170 tags only support ASCII, so I had to find better alternatives.  XMP
 171 seem to have the support I need.</p>
 172
 173 <p>I am a bit unsure which EXIF/XMP tags to use, as I would like to
 174 use tags that can be easily added/updated using normal free software
 175 photo managing software.  I ended up using the tags set using this
 176 exiftool command, as these tags can also be set using digiKam:</p>
 177
 178 <blockquote><pre>
 179 exiftool -headline='The RSS image title' \
 180   -description='The RSS image description.' \
 181   -subject+=for-family photo.jpeg
 182 </pre></blockquote>
 183
 184 <p>I initially tried the "-title" and "keyword" tags, but they were
 185 invisible in digiKam, so I changed to "-headline" and "-subject".  I
 186 use the keyword/subject 'for-family' to flag that the photo should be
 187 shared with my family.  Images with this keyword set are located and
 188 copied into my Freedombox for the RSS generating script to find.</p>
 189
 190 <p>Are there better ways to do this?  Get in touch if you have better
 191 suggestions.</p>
 192
 193 <p>As usual, if you use Bitcoin and want to show your support of my
 194 activities, please send Bitcoin donations to my address
 195 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 196 </div>
 197       <div class="tags">
 198
 199
 200         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 201
 202
 203       </div>
 204     </div>
 205     <div class="padding"></div>
 206
 207     <div class="entry">
 208       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">Simple streaming the Linux desktop to Kodi using GStreamer and RTP</a></div>
 209       <div class="date">12th July 2018</div>
 210       <div class="body"><p>Last night, I wrote
 211 <a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">a
 212 recipe to stream a Linux desktop using VLC to a instance of Kodi</a>.
 213 During the day I received valuable feedback, and thanks to the
 214 suggestions I have been able to rewrite the recipe into a much simpler
 215 approach requiring no setup at all.  It is a single script that take
 216 care of it all.</p>
 217
 218 <p>This new script uses GStreamer instead of VLC to capture the
 219 desktop and stream it to Kodi.  This fixed the video quality issue I
 220 saw initially.  It further removes the need to add a m3u file on the
 221 Kodi machine, as it instead connects to
 222 <a href="https://kodi.wiki/view/JSON-RPC_API/v8">the JSON-RPC API in
 223 Kodi</a> and simply ask Kodi to play from the stream created using
 224 GStreamer.  Streaming the desktop to Kodi now become trivial.  Copy
 225 the script below, run it with the DNS name or IP address of the kodi
 226 server to stream to as the only argument, and watch your screen show
 227 up on the Kodi screen.  Note, it depend on multicast on the local
 228 network, so if you need to stream outside the local network, the
 229 script must be modified.  Also note, I have no idea if audio work, as
 230 I only care about the picture part.</p>
 231
 232 <blockquote><pre>
 233 #!/bin/sh
 234 #
 235 # Stream the Linux desktop view to Kodi.  See
 236 # http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
 237 # for backgorund information.
 238
 239 # Make sure the stream is stopped in Kodi and the gstreamer process is
 240 # killed if something go wrong (for example if curl is unable to find the
 241 # kodi server).  Do the same when interrupting this script.
 242 kodicmd() {
 243     host="$1"
 244     cmd="$2"
 245     params="$3"
 246     curl --silent --header 'Content-Type: application/json' \
 247          --data-binary "{ \"id\": 1, \"jsonrpc\": \"2.0\", \"method\": \"$cmd\", \"params\": $params }" \
 248          "http://$host/jsonrpc"
 249 }
 250 cleanup() {
 251     if [ -n "$kodihost" ] ; then
 252         # Stop the playing when we end
 253         playerid=$(kodicmd "$kodihost" Player.GetActivePlayers "{}" |
 254                             jq .result[].playerid)
 255         kodicmd "$kodihost" Player.Stop "{ \"playerid\" : $playerid }" > /dev/null
 256     fi
 257     if [ "$gstpid" ] && kill -0 "$gstpid" >/dev/null 2>&1; then
 258         kill "$gstpid"
 259     fi
 260 }
 261 trap cleanup EXIT INT
 262
 263 if [ -n "$1" ]; then
 264     kodihost=$1
 265     shift
 266 else
 267     kodihost=kodi.local
 268 fi
 269
 270 mcast=239.255.0.1
 271 mcastport=1234
 272 mcastttl=1
 273
 274 pasrc=$(pactl list | grep -A2 'Source #' | grep 'Name: .*\.monitor$' | \
 275   cut -d" " -f2|head -1)
 276 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 277   videoconvert ! queue2 ! \
 278   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 279   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 280   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 281   udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
 282   pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
 283   > /dev/null 2>&1 &
 284 gstpid=$!
 285
 286 # Give stream a second to get going
 287 sleep 1
 288
 289 # Ask kodi to start streaming using its JSON-RPC API
 290 kodicmd "$kodihost" Player.Open \
 291         "{\"item\": { \"file\": \"udp://@$mcast:$mcastport\" } }" > /dev/null
 292
 293 # wait for gst to end
 294 wait "$gstpid"
 295 </pre></blockquote>
 296
 297 <p>I hope you find the approach useful.  I know I do.</p>
 298
 299 <p>As usual, if you use Bitcoin and want to show your support of my
 300 activities, please send Bitcoin donations to my address
 301 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 302 </div>
 303       <div class="tags">
 304
 305
 306         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 307
 308
 309       </div>
 310     </div>
 311     <div class="padding"></div>
 312
 313     <div class="entry">
 314       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">Streaming the Linux desktop to Kodi using VLC and RTSP</a></div>
 315       <div class="date">12th July 2018</div>
 316       <div class="body"><p>PS: See
 317 <ahref="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">the
 318 followup post</a> for a even better approach.</p>
 319
 320 <p>A while back, I was asked by a friend how to stream the desktop to
 321 my projector connected to Kodi.  I sadly had to admit that I had no
 322 idea, as it was a task I never had tried.  Since then, I have been
 323 looking for a way to do so, preferable without much extra software to
 324 install on either side.  Today I found a way that seem to kind of
 325 work.  Not great, but it is a start.</p>
 326
 327 <p>I had a look at several approaches, for example
 328 <a href="https://github.com/mfoetsch/dlna_live_streaming">using uPnP
 329 DLNA as described in 2011</a>, but it required a uPnP server, fuse and
 330 local storage enough to store the stream locally.  This is not going
 331 to work well for me, lacking enough free space, and it would
 332 impossible for my friend to get working.</p>
 333
 334 <p>Next, it occurred to me that perhaps I could use VLC to create a
 335 video stream that Kodi could play.  Preferably using
 336 broadcast/multicast, to avoid having to change any setup on the Kodi
 337 side when starting such stream.  Unfortunately, the only recipe I
 338 could find using multicast used the rtp protocol, and this protocol
 339 seem to not be supported by Kodi.</p>
 340
 341 <p>On the other hand, the rtsp protocol is working!  Unfortunately I
 342 have to specify the IP address of the streaming machine in both the
 343 sending command and the file on the Kodi server.  But it is showing my
 344 desktop, and thus allow us to have a shared look on the big screen at
 345 the programs I work on.</p>
 346
 347 <p>I did not spend much time investigating codeces.  I combined the
 348 rtp and rtsp recipes from
 349 <a href="https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/">the
 350 VLC Streaming HowTo/Command Line Examples</a>, and was able to get
 351 this working on the desktop/streaming end.</p>
 352
 353 <blockquote><pre>
 354 vlc screen:// --sout \
 355   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}'
 356 </pre></blockquote>
 357
 358 <p>I ssh-ed into my Kodi box and created a file like this with the
 359 same IP address:</p>
 360
 361 <blockquote><pre>
 362 echo rtsp://192.168.11.4:8080/test.sdp \
 363   > /storage/videos/screenstream.m3u
 364 </pre></blockquote>
 365
 366 <p>Note the 192.168.11.4 IP address is my desktops IP address.  As far
 367 as I can tell the IP must be hardcoded for this to work.  In other
 368 words, if someone elses machine is going to do the steaming, you have
 369 to update screenstream.m3u on the Kodi machine and adjust the vlc
 370 recipe.  To get started, locate the file in Kodi and select the m3u
 371 file while the VLC stream is running.  The desktop then show up in my
 372 big screen. :)</p>
 373
 374 <p>When using the same technique to stream a video file with audio,
 375 the audio quality is really bad.  No idea if the problem is package
 376 loss or bad parameters for the transcode.  I do not know VLC nor Kodi
 377 enough to tell.</p>
 378
 379 <p><strong>Update 2018-07-12</strong>: Johannes Schauer send me a few
 380 succestions and reminded me about an important step.  The "screen:"
 381 input source is only available once the vlc-plugin-access-extra
 382 package is installed on Debian.  Without it, you will see this error
 383 message: "VLC is unable to open the MRL 'screen://'.  Check the log
 384 for details."  He further found that it is possible to drop some parts
 385 of the VLC command line to reduce the amount of hardcoded information.
 386 It is also useful to consider using cvlc to avoid having the VLC
 387 window in the desktop view.  In sum, this give us this command line on
 388 the source end
 389
 390 <blockquote><pre>
 391 cvlc screen:// --sout \
 392   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}'
 393 </pre></blockquote>
 394
 395 <p>and this on the Kodi end<p>
 396
 397 <blockquote><pre>
 398 echo rtsp://192.168.11.4:8080/ \
 399   > /storage/videos/screenstream.m3u
 400 </pre></blockquote>
 401
 402 <p>Still bad image quality, though.  But I did discover that streaming
 403 a DVD using dvdsimple:///dev/dvd as the source had excellent video and
 404 audio quality, so I guess the issue is in the input or transcoding
 405 parts, not the rtsp part.  I've tried to change the vb and ab
 406 parameters to use more bandwidth, but it did not make a
 407 difference.</p>
 408
 409 <p>I further received a suggestion from Einar Haraldseid to try using
 410 gstreamer instead of VLC, and this proved to work great!  He also
 411 provided me with the trick to get Kodi to use a multicast stream as
 412 its source.  By using this monstrous oneliner, I can stream my desktop
 413 with good video quality in reasonable framerate to the 239.255.0.1
 414 multicast address on port 1234:
 415
 416 <blockquote><pre>
 417 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 418   videoconvert ! queue2 ! \
 419   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 420   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 421   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 422   udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
 423   pulsesrc device=$(pactl list | grep -A2 'Source #' | \
 424     grep 'Name: .*\.monitor$' |  cut -d" " -f2|head -1) ! \
 425   audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
 426 </pre></blockquote>
 427
 428 <p>and this on the Kodi end<p>
 429
 430 <blockquote><pre>
 431 echo udp://@239.255.0.1:1234 \
 432   > /storage/videos/screenstream.m3u
 433 </pre></blockquote>
 434
 435 <p>Note the trick to pick a valid pulseaudio source.  It might not
 436 pick the one you need.  This approach will of course lead to trouble
 437 if more than one source uses the same multicast port and address.
 438 Note the ttl-mc=1 setting, which limit the multicast packages to the
 439 local network.  If the value is increased, your screen will be
 440 broadcasted further, one network "hop" for each increase (read up on
 441 multicast to learn more. :)!</p>
 442
 443 <p>Having cracked how to get Kodi to receive multicast streams, I
 444 could use this VLC command to stream to the same multicast address.
 445 The image quality is way better than the rtsp approach, but gstreamer
 446 seem to be doing a better job.</p>
 447
 448 <blockquote><pre>
 449 cvlc screen:// --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}'
 450 </pre></blockquote>
 451
 452 <p>As usual, if you use Bitcoin and want to show your support of my
 453 activities, please send Bitcoin donations to my address
 454 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 455 </div>
 456       <div class="tags">
 457
 458
 459         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 460
 461
 462       </div>
 463     </div>
 464     <div class="padding"></div>
 465
 466     <div class="entry">
 467       <div class="title"><a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html">What is the most supported MIME type in Debian in 2018?</a></div>
 468       <div class="date"> 9th July 2018</div>
 469       <div class="body"><p>Five years ago,
 470 <a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html">I
 471 measured what the most supported MIME type in Debian was</a>, by
 472 analysing the desktop files in all packages in the archive.  Since
 473 then, the DEP-11 AppStream system has been put into production, making
 474 the task a lot easier.  This made me want to repeat the measurement,
 475 to see how much things changed.  Here are the new numbers, for
 476 unstable only this time:
 477
 478 <p><strong>Debian Unstable:</strong></p>
 479
 480 <pre>
 481   count MIME type
 482   ----- -----------------------
 483      56 image/jpeg
 484      55 image/png
 485      49 image/tiff
 486      48 image/gif
 487      39 image/bmp
 488      38 text/plain
 489      37 audio/mpeg
 490      34 application/ogg
 491      33 audio/x-flac
 492      32 audio/x-mp3
 493      30 audio/x-wav
 494      30 audio/x-vorbis+ogg
 495      29 image/x-portable-pixmap
 496      27 inode/directory
 497      27 image/x-portable-bitmap
 498      27 audio/x-mpeg
 499      26 application/x-ogg
 500      25 audio/x-mpegurl
 501      25 audio/ogg
 502      24 text/html
 503 </pre>
 504
 505 <p>The list was created like this using a sid chroot: "cat
 506 /var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk '/^
 507 - \S+\/\S+$/ {print $2 }' | sort | uniq -c | sort -nr | head -20"</p>
 508
 509 <p>It is interesting to see how image formats have passed text/plain
 510 as the most announced supported MIME type.  These days, thanks to the
 511 AppStream system, if you run into a file format you do not know, and
 512 want to figure out which packages support the format, you can find the
 513 MIME type of the file using "file --mime &lt;filename&gt;", and then
 514 look up all packages announcing support for this format in their
 515 AppStream metadata (XML or .desktop file) using "appstreamcli
 516 what-provides mimetype &lt;mime-type&gt;.  For example if you, like
 517 me, want to know which packages support inode/directory, you can get a
 518 list like this:</p>
 519
 520 <p><blockquote><pre>
 521 % appstreamcli what-provides mimetype inode/directory | grep Package: | sort
 522 Package: anjuta
 523 Package: audacious
 524 Package: baobab
 525 Package: cervisia
 526 Package: chirp
 527 Package: dolphin
 528 Package: doublecmd-common
 529 Package: easytag
 530 Package: enlightenment
 531 Package: ephoto
 532 Package: filelight
 533 Package: gwenview
 534 Package: k4dirstat
 535 Package: kaffeine
 536 Package: kdesvn
 537 Package: kid3
 538 Package: kid3-qt
 539 Package: nautilus
 540 Package: nemo
 541 Package: pcmanfm
 542 Package: pcmanfm-qt
 543 Package: qweborf
 544 Package: ranger
 545 Package: sirikali
 546 Package: spacefm
 547 Package: spacefm
 548 Package: vifm
 549 %
 550 </pre></blockquote></p>
 551
 552 <p>Using the same method, I can quickly discover that the Sketchup file
 553 format is not yet supported by any package in Debian:</p>
 554
 555 <p><blockquote><pre>
 556 % appstreamcli what-provides mimetype  application/vnd.sketchup.skp
 557 Could not find component providing 'mimetype::application/vnd.sketchup.skp'.
 558 %
 559 </pre></blockquote></p>
 560
 561 <p>Yesterday I used it to figure out which packages support the STL 3D
 562 format:</p>
 563
 564 <p><blockquote><pre>
 565 % appstreamcli what-provides mimetype  application/sla|grep Package
 566 Package: cura
 567 Package: meshlab
 568 Package: printrun
 569 %
 570 </pre></blockquote></p>
 571
 572 <p>PS: A new version of Cura was uploaded to Debian yesterday.</p>
 573
 574 <p>As usual, if you use Bitcoin and want to show your support of my
 575 activities, please send Bitcoin donations to my address
 576 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 577 </div>
 578       <div class="tags">
 579
 580
 581         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram</a>.
 582
 583
 584       </div>
 585     </div>
 586     <div class="padding"></div>
 587
 588     <div class="entry">
 589       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html">Debian APT upgrade without enough free space on the disk...</a></div>
 590       <div class="date"> 8th July 2018</div>
 591       <div class="body"><p>Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
 592 for a while, and when I need to update it there is not enough free
 593 space on the disk for apt to do a normal 'apt upgrade'.  I normally
 594 would resolve the issue by doing 'apt install &lt;somepackages&gt;' to
 595 upgrade only some of the packages in one batch, until the amount of
 596 packages to download fall below the amount of free space available.
 597 Today, I had about 500 packages to upgrade, and after a while I got
 598 tired of trying to install chunks of packages manually.  I concluded
 599 that I did not have the spare hours required to complete the task, and
 600 decided to see if I could automate it.  I came up with this small
 601 script which I call 'apt-in-chunks':</p>
 602
 603 <p><blockquote><pre>
 604 #!/bin/sh
 605 #
 606 # Upgrade packages when the disk is too full to upgrade every
 607 # upgradable package in one lump.  Fetching packages to upgrade using
 608 # apt, and then installing using dpkg, to avoid changing the package
 609 # flag for manual/automatic.
 610
 611 set -e
 612
 613 ignore() {
 614     if [ "$1" ]; then
 615         grep -v "$1"
 616     else
 617         cat
 618     fi
 619 }
 620
 621 for p in $(apt list --upgradable | ignore "$@" |cut -d/ -f1 | grep -v '^Listing...'); do
 622     echo "Upgrading $p"
 623     apt clean
 624     apt install --download-only -y $p
 625     for f in /var/cache/apt/archives/*.deb; do
 626         if [ -e "$f" ]; then
 627             dpkg -i /var/cache/apt/archives/*.deb
 628             break
 629         fi
 630     done
 631 done
 632 </pre></blockquote></p>
 633
 634 <p>The script will extract the list of packages to upgrade, try to
 635 download the packages needed to upgrade one package, install the
 636 downloaded packages using dpkg.  The idea is to upgrade packages
 637 without changing the APT mark for the package (ie the one recording of
 638 the package was manually requested or pulled in as a dependency).  To
 639 use it, simply run it as root from the command line.  If it fail, try
 640 'apt install -f' to clean up the mess and run the script again.  This
 641 might happen if the new packages conflict with one of the old
 642 packages.  dpkg is unable to remove, while apt can do this.</p>
 643
 644 <p>It take one option, a package to ignore in the list of packages to
 645 upgrade.  The option to ignore a package is there to be able to skip
 646 the packages that are simply too large to unpack.  Today this was
 647 'ghc', but I have run into other large packages causing similar
 648 problems earlier (like TeX).</p>
 649
 650 <p>Update 2018-07-08: Thanks to Paul Wise, I am aware of two
 651 alternative ways to handle this.  The "unattended-upgrades
 652 --minimal-upgrade-steps" option will try to calculate upgrade sets for
 653 each package to upgrade, and then upgrade them in order, smallest set
 654 first.  It might be a better option than my above mentioned script.
 655 Also, "aptutude upgrade" can upgrade single packages, thus avoiding
 656 the need for using "dpkg -i" in the script above.</p>
 657
 658 <p>As usual, if you use Bitcoin and want to show your support of my
 659 activities, please send Bitcoin donations to my address
 660 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 661 </div>
 662       <div class="tags">
 663
 664
 665         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 666
 667
 668       </div>
 669     </div>
 670     <div class="padding"></div>
 671
 672     <div class="entry">
 673       <div class="title"><a href="http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html">The worlds only stone power plant?</a></div>
 674       <div class="date">30th June 2018</div>
 675       <div class="body"><p>So far, at least hydro-electric power, coal power, wind power,
 676 solar power, and wood power are well known.  Until a few days ago, I
 677 had never heard of stone power.  Then I learn about a quarry in a
 678 mountain in
 679 <a href="https://en.wikipedia.org/wiki/Bremanger">Bremanger</a> i
 680 Norway, where
 681 <a href="https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/">the
 682 Bremanger Quarry</a> company is extracting stone and dumping the stone
 683 into a shaft leading to its shipping harbour.  This downward movement
 684 in this shaft is used to produce electricity.  In short, it is using
 685 falling rocks instead of falling water to produce electricity, and
 686 according to its own statements it is producing more power than it is
 687 using, and selling the surplus electricity to the Norwegian power
 688 grid.  I find the concept truly amazing.  Is this the worlds only
 689 stone power plant?</p>
 690
 691 <p>As usual, if you use Bitcoin and want to show your support of my
 692 activities, please send Bitcoin donations to my address
 693 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 694 </div>
 695       <div class="tags">
 696
 697
 698         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 699
 700
 701       </div>
 702     </div>
 703     <div class="padding"></div>
 704
 705     <div class="entry">
 706       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html">Add-on to control the projector from within Kodi</a></div>
 707       <div class="date">26th June 2018</div>
 708       <div class="body"><p>My movie playing setup involve <a href="https://kodi.tv/">Kodi</a>,
 709 <a href="https://openelec.tv">OpenELEC</a> (probably soon to be
 710 replaced with <a href="https://libreelec.tv/">LibreELEC</a>) and an
 711 Infocus IN76 video projector.  My projector can be controlled via both
 712 a infrared remote controller, and a RS-232 serial line.  The vendor of
 713 my projector, <a href="https://www.infocus.com/">InFocus</a>, had been
 714 sensible enough to document the serial protocol in its user manual, so
 715 it is easily available, and I used it some years ago to write
 716 <a href="https://github.com/petterreinholdtsen/infocus-projector-control">a
 717 small script to control the projector</a>.  For a while now, I longed
 718 for a setup where the projector was controlled by Kodi, for example in
 719 such a way that when the screen saver went on, the projector was
 720 turned off, and when the screen saver exited, the projector was turned
 721 on again.</p>
 722
 723 <p>A few days ago, with very good help from parts of my family, I
 724 managed to find a Kodi Add-on for controlling a Epson projector, and
 725 got in touch with its author to see if we could join forces and make a
 726 Add-on with support for several projectors.  To my pleasure, he was
 727 positive to the idea, and we set out to add InFocus support to his
 728 add-on, and make the add-on suitable for the official Kodi add-on
 729 repository.</p>
 730
 731 <p>The Add-on is now working (for me, at least), with a few minor
 732 adjustments.  The most important change I do relative to the master
 733 branch in the github repository is embedding the
 734 <a href="https://github.com/pyserial/pyserial">pyserial module</a> in
 735 the add-on.  The long term solution is to make a "script" type
 736 pyserial module for Kodi, that can be pulled in as a dependency in
 737 Kodi.  But until that in place, I embed it.</p>
 738
 739 <p>The add-on can be configured to turn on the projector when Kodi
 740 starts, off when Kodi stops as well as turn the projector off when the
 741 screensaver start and on when the screesaver stops.  It can also be
 742 told to set the projector source when turning on the projector.
 743
 744 <p>If this sound interesting to you, check out
 745 <a href="https://github.com/fredrik-eriksson/kodi_projcontrol">the
 746 project github repository</a>.  Perhaps you can send patches to
 747 support your projector too?  As soon as we find time to wrap up the
 748 latest changes, it should be available for easy installation using any
 749 Kodi instance.</p>
 750
 751 <p>For future improvements, I would like to add projector model
 752 detection and the ability to adjust the brightness level of the
 753 projector from within Kodi.  We also need to figure out how to handle
 754 the cooling period of the projector.  My projector refuses to turn on
 755 for 60 seconds after it was turned off.  This is not handled well by
 756 the add-on at the moment.</p>
 757
 758 <p>As usual, if you use Bitcoin and want to show your support of my
 759 activities, please send Bitcoin donations to my address
 760 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 761 </div>
 762       <div class="tags">
 763
 764
 765         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 766
 767
 768       </div>
 769     </div>
 770     <div class="padding"></div>
 771
 772     <div class="entry">
 773       <div class="title"><a href="http://people.skolelinux.org/pere/blog/youtube_dl_for_nedlasting_fra_NRK_med_undertekster___nice_free_software.html">youtube-dl for nedlasting fra NRK med undertekster - nice free software</a></div>
 774       <div class="date">28th April 2018</div>
 775       <div class="body"><p>I <a href="https://no.wikipedia.org/wiki/VHS">VHS-kassettenes</a>
 776 tid var det rett frem å ta vare på et TV-program en ønsket å kunne se
 777 senere, uten å være avhengig av at programmet ble sendt på nytt.
 778 Kanskje ønsket en å se programmet på hytten der det ikke var
 779 TV-signal, eller av andre grunner ha det tilgjengelig for fremtidig
 780 fornøyelse.  Dette er blitt vanskeligere med introduksjon av
 781 digital-TV og webstreaming, der opptak til harddisk er utenfor de
 782 flestes kontroll hvis de bruker ufri programvare og bokser kontrollert
 783 av andre.  Men for NRK her i Norge, finnes det heldigvis flere fri
 784 programvare-alternativer, som jeg har
 785 <a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK.html">skrevet</a>
 786 <a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK_med_den__nye__l_sningen.html">om</a>
 787 <a href="http://people.skolelinux.org/pere/blog/Nedlasting_fra_NRK__som_Matroska_med_undertekster.html">før</a>.
 788 Så lenge kilden for nedlastingen er lovlig lagt ut på nett (hvilket
 789 jeg antar NRK gjør), så er slik lagring til privat bruk også lovlig i
 790 Norge.</p>
 791
 792 <p>Sist jeg så på saken, i 2016, nevnte jeg at
 793 <a href="https://rg3.github.com/youtube-dl/">youtube-dl</a> ikke kunne
 794 bake undertekster fra NRK inn i videofilene, og at jeg derfor
 795 foretrakk andre alternativer.  Nylig oppdaget jeg at dette har endret
 796 seg.  Fordelen med youtube-dl er at den er tilgjengelig direkte fra
 797 Linux-distribusjoner som <a href="https://www.debian.org/">Debian</a>
 798 og <a href="https://www.ubuntu.com/">Ubuntu</a>, slik at en slipper å
 799 finne ut selv hvordan en skal få dem til å virke.</p>
 800
 801 <p>For å laste ned et NRK-innslag med undertekster, og få den norske
 802 underteksten pakket inn i videofilen, så kan følgende kommando
 803 brukes:</p>
 804
 805 <p><pre>
 806 youtube-dl --write-sub --sub-format ttml \
 807   --convert-subtitles srt --embed-subs \
 808   https://tv.nrk.no/serie/ramm-ferdig-gaa/MUHU11000316/27-04-2018
 809 </pre></p>
 810
 811 <p>URL-eksemplet er dagens toppsak på tv.nrk.no.  Resultatet er en
 812 MP4-fil med filmen og undertekster som kan spilles av med VLC.  Merk
 813 at VLC ikke viser frem undertekster før du aktiverer dem.  For å gjøre
 814 det, høyreklikk med musa i fremviservinduet, velg menyvalget for
 815 undertekst og så norsk språk.  Jeg testet også '--write-auto-sub',
 816 men det kommandolinjeargumentet ser ikke ut til å fungere, så jeg
 817 endte opp med settet med argumentlisten over, som jeg fant i en
 818 feilrapport i youtube-dl-prosjektets samling over feilrapporter.</p>
 819
 820 <p>Denne støtten i youtube-dl gjør det svært enkelt å lagre
 821 NRK-innslag, det være seg nyheter, filmer, serier eller dokumentater,
 822 for å ha dem tilgjengelig for fremtidig referanse og bruk, uavhengig
 823 av hvor lenge innslagene ligger tilgjengelig hos NRK.  Så får det ikke
 824 hjelpe at NRKs jurister mener at det er
 825 <a href="http://people.skolelinux.org/pere/blog/Best___ikke_fortelle_noen_at_streaming_er_nedlasting___.html">vesensforskjellig
 826 å legge tilgjengelig for nedlasting og for streaming</a>, når det rent
 827 teknisk er samme sak.</p>
 828
 829 <p>Programmet youtube-dl støtter også en rekke andre nettsteder, se
 830 prosjektoversikten for
 831 <a href="http://rg3.github.io/youtube-dl/supportedsites.html">en
 832 komplett liste</a>.</p>
 833 </div>
 834       <div class="tags">
 835
 836
 837         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
 838
 839
 840       </div>
 841     </div>
 842     <div class="padding"></div>
 843
 844     <p style="text-align: right;"><a href="index.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS feed" width="36" height="14" /></a></p>
 845     <div id="sidebar">
 846
 847
 848
 849 <h2>Archive</h2>
 850 <ul>
 851
 852 <li>2018
 853 <ul>
 854
 855 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 856
 857 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 858
 859 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 860
 861 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 862
 863 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 864
 865 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 866
 867 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (2)</a></li>
 868
 869 </ul></li>
 870
 871 <li>2017
 872 <ul>
 873
 874 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 875
 876 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 877
 878 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 879
 880 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 881
 882 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 883
 884 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 885
 886 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 887
 888 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 889
 890 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 891
 892 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 893
 894 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 895
 896 </ul></li>
 897
 898 <li>2016
 899 <ul>
 900
 901 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 902
 903 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 904
 905 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 906
 907 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 908
 909 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 910
 911 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 912
 913 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 914
 915 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 916
 917 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 918
 919 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 920
 921 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 922
 923 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 924
 925 </ul></li>
 926
 927 <li>2015
 928 <ul>
 929
 930 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 931
 932 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 933
 934 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 935
 936 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 937
 938 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 939
 940 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 941
 942 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 943
 944 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 945
 946 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 947
 948 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 949
 950 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 951
 952 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 953
 954 </ul></li>
 955
 956 <li>2014
 957 <ul>
 958
 959 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 960
 961 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 962
 963 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 964
 965 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 966
 967 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 968
 969 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 970
 971 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 972
 973 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 974
 975 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 976
 977 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 978
 979 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 980
 981 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 982
 983 </ul></li>
 984
 985 <li>2013
 986 <ul>
 987
 988 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 989
 990 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 991
 992 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 993
 994 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 995
 996 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 997
 998 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 999
1000 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
1001
1002 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
1003
1004 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
1005
1006 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
1007
1008 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
1009
1010 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
1011
1012 </ul></li>
1013
1014 <li>2012
1015 <ul>
1016
1017 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
1018
1019 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
1020
1021 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
1022
1023 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
1024
1025 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
1026
1027 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
1028
1029 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
1030
1031 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
1032
1033 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
1034
1035 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
1036
1037 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
1038
1039 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
1040
1041 </ul></li>
1042
1043 <li>2011
1044 <ul>
1045
1046 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
1047
1048 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
1049
1050 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
1051
1052 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
1053
1054 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
1055
1056 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
1057
1058 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
1059
1060 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
1061
1062 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
1063
1064 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
1065
1066 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
1067
1068 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
1069
1070 </ul></li>
1071
1072 <li>2010
1073 <ul>
1074
1075 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1076
1077 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1078
1079 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1080
1081 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1082
1083 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1084
1085 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1086
1087 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1088
1089 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1090
1091 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1092
1093 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1094
1095 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1096
1097 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1098
1099 </ul></li>
1100
1101 <li>2009
1102 <ul>
1103
1104 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1105
1106 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1107
1108 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1109
1110 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1111
1112 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1113
1114 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1115
1116 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1117
1118 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1119
1120 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1121
1122 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1123
1124 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1125
1126 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1127
1128 </ul></li>
1129
1130 <li>2008
1131 <ul>
1132
1133 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1134
1135 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1136
1137 </ul></li>
1138
1139 </ul>
1140
1141
1142
1143 <h2>Tags</h2>
1144 <ul>
1145
1146  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
1147
1148  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1149
1150  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1151
1152  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1153
1154  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (9)</a></li>
1155
1156  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
1157
1158  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1159
1160  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1161
1162  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (161)</a></li>
1163
1164  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
1165
1166  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
1167
1168  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1169
1170  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
1171
1172  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (25)</a></li>
1173
1174  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1175
1176  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (381)</a></li>
1177
1178  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1179
1180  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (13)</a></li>
1181
1182  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (32)</a></li>
1183
1184  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1185
1186  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1187
1188  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1189
1190  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1191
1192  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
1193
1194  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
1195
1196  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1197
1198  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
1199
1200  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1201
1202  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1203
1204  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1205
1206  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1207
1208  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
1209
1210  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (10)</a></li>
1211
1212  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
1213
1214  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (190)</a></li>
1215
1216  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
1217
1218  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1219
1220  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (71)</a></li>
1221
1222  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
1223
1224  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1225
1226  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1227
1228  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1229
1230  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1231
1232  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
1233
1234  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1235
1236  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
1237
1238  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1239
1240  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (54)</a></li>
1241
1242  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1243
1244  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1245
1246  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
1247
1248  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
1249
1250  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
1251
1252  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
1253
1254  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
1255
1256  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1257
1258  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1259
1260  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (11)</a></li>
1261
1262  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (66)</a></li>
1263
1264  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1265
1266  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
1267
1268 </ul>
1269
1270
1271     </div>
1272     <p style="text-align: right">
1273  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1274 </p>
1275
1276   </body>
1277 </html>