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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/Privacy_respecting_health_monitor___fitness_tracker_.html">Privacy respecting health monitor / fitness tracker?</a></div>
  24       <div class="date"> 7th August 2018</div>
  25       <div class="body"><p>Dear lazyweb,</p>
  26
  27 <p>I wonder, is there a fitness tracker / health monitor available for
  28 sale today that respect the users privacy?  With this I mean a
  29 watch/bracelet capable of measuring pulse rate and other
  30 fitness/health related values (and by all means, also the correct time
  31 and location if possible), which is <strong>only</strong> provided for
  32 me to extract/read from the unit with computer without a radio beacon
  33 and Internet connection.  In other words, it do not depend on a cell
  34 phone app, and do make the measurements available via other peoples
  35 computer (aka "the cloud").  The collected data should be available
  36 using only free software.  I'm not interested in depending on some
  37 non-free software that will leave me high and dry some time in the
  38 future.  I've been unable to find any such unit.  I would like to buy
  39 it.  The ones I have seen for sale here in Norway are proud to report
  40 that they share my health data with strangers (aka "cloud enabled").
  41 Is there an alternative?  I'm not interested in giving money to people
  42 requiring me to accept "privacy terms" to allow myself to measure my
  43 own health.</p>
  44
  45 <p>As usual, if you use Bitcoin and want to show your support of my
  46 activities, please send Bitcoin donations to my address
  47 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  48 </div>
  49       <div class="tags">
  50
  51
  52         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
  53
  54
  55       </div>
  56     </div>
  57     <div class="padding"></div>
  58
  59     <div class="entry">
  60       <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>
  61       <div class="date">31st July 2018</div>
  62       <div class="body"><p>For a while now, I have looked for a sensible way to share images
  63 with my family using a self hosted solution, as it is unacceptable to
  64 place images from my personal life under the control of strangers
  65 working for data hoarders like Google or Dropbox.  The last few days I
  66 have drafted an approach that might work out, and I would like to
  67 share it with you.  I would like to publish images on a server under
  68 my control, and point some Internet connected display units using some
  69 free and open standard to the images I published.  As my primary
  70 language is not limited to ASCII, I need to store metadata using
  71 UTF-8.  Many years ago, I hoped to find a digital photo frame capable
  72 of reading a RSS feed with image references (aka using the
  73 &lt;enclosure&gt; RSS tag), but was unable to find a current supplier
  74 of such frames.  In the end I gave up that approach.</p>
  75
  76 <p>Some months ago, I discovered that
  77 <a href="https://www.jwz.org/xscreensaver/">XScreensaver</a> is able to
  78 read images from a RSS feed, and used it to set up a screen saver on
  79 my home info screen, showing images from the Daily images feed from
  80 NASA.  This proved to work well.  More recently I discovered that
  81 <a href="https://kodi.tv">Kodi</a> (both using
  82 <a href="https://www.openelec.tv/">OpenELEC</a> and
  83 <a href="https://libreelec.tv">LibreELEC</a>) provide the
  84 <a href="https://github.com/grinsted/script.screensaver.feedreader">Feedreader</a>
  85 screen saver capable of reading a RSS feed with images and news.  For
  86 fun, I used it this summer to test Kodi on my parents TV by hooking up
  87 a Raspberry PI unit with LibreELEC, and wanted to provide them with a
  88 screen saver showing selected pictures from my selection.</p>
  89
  90 <p>Armed with motivation and a test photo frame, I set out to generate
  91 a RSS feed for the Kodi instance.  I adjusted my <a
  92 href="https://freedombox.org/">Freedombox</a> instance, created
  93 /var/www/html/privatepictures/, wrote a small Perl script to extract
  94 title and description metadata from the photo files and generate the
  95 RSS file.  I ended up using Perl instead of python, as the
  96 libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
  97 tags I ended up using, while python3-exif did not.  The relevant EXIF
  98 tags only support ASCII, so I had to find better alternatives.  XMP
  99 seem to have the support I need.</p>
 100
 101 <p>I am a bit unsure which EXIF/XMP tags to use, as I would like to
 102 use tags that can be easily added/updated using normal free software
 103 photo managing software.  I ended up using the tags set using this
 104 exiftool command, as these tags can also be set using digiKam:</p>
 105
 106 <blockquote><pre>
 107 exiftool -headline='The RSS image title' \
 108   -description='The RSS image description.' \
 109   -subject+=for-family photo.jpeg
 110 </pre></blockquote>
 111
 112 <p>I initially tried the "-title" and "keyword" tags, but they were
 113 invisible in digiKam, so I changed to "-headline" and "-subject".  I
 114 use the keyword/subject 'for-family' to flag that the photo should be
 115 shared with my family.  Images with this keyword set are located and
 116 copied into my Freedombox for the RSS generating script to find.</p>
 117
 118 <p>Are there better ways to do this?  Get in touch if you have better
 119 suggestions.</p>
 120
 121 <p>As usual, if you use Bitcoin and want to show your support of my
 122 activities, please send Bitcoin donations to my address
 123 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 124 </div>
 125       <div class="tags">
 126
 127
 128         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>.
 129
 130
 131       </div>
 132     </div>
 133     <div class="padding"></div>
 134
 135     <div class="entry">
 136       <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>
 137       <div class="date">12th July 2018</div>
 138       <div class="body"><p>Last night, I wrote
 139 <a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">a
 140 recipe to stream a Linux desktop using VLC to a instance of Kodi</a>.
 141 During the day I received valuable feedback, and thanks to the
 142 suggestions I have been able to rewrite the recipe into a much simpler
 143 approach requiring no setup at all.  It is a single script that take
 144 care of it all.</p>
 145
 146 <p>This new script uses GStreamer instead of VLC to capture the
 147 desktop and stream it to Kodi.  This fixed the video quality issue I
 148 saw initially.  It further removes the need to add a m3u file on the
 149 Kodi machine, as it instead connects to
 150 <a href="https://kodi.wiki/view/JSON-RPC_API/v8">the JSON-RPC API in
 151 Kodi</a> and simply ask Kodi to play from the stream created using
 152 GStreamer.  Streaming the desktop to Kodi now become trivial.  Copy
 153 the script below, run it with the DNS name or IP address of the kodi
 154 server to stream to as the only argument, and watch your screen show
 155 up on the Kodi screen.  Note, it depend on multicast on the local
 156 network, so if you need to stream outside the local network, the
 157 script must be modified.  Also note, I have no idea if audio work, as
 158 I only care about the picture part.</p>
 159
 160 <blockquote><pre>
 161 #!/bin/sh
 162 #
 163 # Stream the Linux desktop view to Kodi.  See
 164 # http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
 165 # for backgorund information.
 166
 167 # Make sure the stream is stopped in Kodi and the gstreamer process is
 168 # killed if something go wrong (for example if curl is unable to find the
 169 # kodi server).  Do the same when interrupting this script.
 170 kodicmd() {
 171     host="$1"
 172     cmd="$2"
 173     params="$3"
 174     curl --silent --header 'Content-Type: application/json' \
 175          --data-binary "{ \"id\": 1, \"jsonrpc\": \"2.0\", \"method\": \"$cmd\", \"params\": $params }" \
 176          "http://$host/jsonrpc"
 177 }
 178 cleanup() {
 179     if [ -n "$kodihost" ] ; then
 180         # Stop the playing when we end
 181         playerid=$(kodicmd "$kodihost" Player.GetActivePlayers "{}" |
 182                             jq .result[].playerid)
 183         kodicmd "$kodihost" Player.Stop "{ \"playerid\" : $playerid }" > /dev/null
 184     fi
 185     if [ "$gstpid" ] && kill -0 "$gstpid" >/dev/null 2>&1; then
 186         kill "$gstpid"
 187     fi
 188 }
 189 trap cleanup EXIT INT
 190
 191 if [ -n "$1" ]; then
 192     kodihost=$1
 193     shift
 194 else
 195     kodihost=kodi.local
 196 fi
 197
 198 mcast=239.255.0.1
 199 mcastport=1234
 200 mcastttl=1
 201
 202 pasrc=$(pactl list | grep -A2 'Source #' | grep 'Name: .*\.monitor$' | \
 203   cut -d" " -f2|head -1)
 204 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 205   videoconvert ! queue2 ! \
 206   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 207   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 208   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 209   udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
 210   pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
 211   > /dev/null 2>&1 &
 212 gstpid=$!
 213
 214 # Give stream a second to get going
 215 sleep 1
 216
 217 # Ask kodi to start streaming using its JSON-RPC API
 218 kodicmd "$kodihost" Player.Open \
 219         "{\"item\": { \"file\": \"udp://@$mcast:$mcastport\" } }" > /dev/null
 220
 221 # wait for gst to end
 222 wait "$gstpid"
 223 </pre></blockquote>
 224
 225 <p>I hope you find the approach useful.  I know I do.</p>
 226
 227 <p>As usual, if you use Bitcoin and want to show your support of my
 228 activities, please send Bitcoin donations to my address
 229 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 230 </div>
 231       <div class="tags">
 232
 233
 234         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>.
 235
 236
 237       </div>
 238     </div>
 239     <div class="padding"></div>
 240
 241     <div class="entry">
 242       <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>
 243       <div class="date">12th July 2018</div>
 244       <div class="body"><p>PS: See
 245 <ahref="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">the
 246 followup post</a> for a even better approach.</p>
 247
 248 <p>A while back, I was asked by a friend how to stream the desktop to
 249 my projector connected to Kodi.  I sadly had to admit that I had no
 250 idea, as it was a task I never had tried.  Since then, I have been
 251 looking for a way to do so, preferable without much extra software to
 252 install on either side.  Today I found a way that seem to kind of
 253 work.  Not great, but it is a start.</p>
 254
 255 <p>I had a look at several approaches, for example
 256 <a href="https://github.com/mfoetsch/dlna_live_streaming">using uPnP
 257 DLNA as described in 2011</a>, but it required a uPnP server, fuse and
 258 local storage enough to store the stream locally.  This is not going
 259 to work well for me, lacking enough free space, and it would
 260 impossible for my friend to get working.</p>
 261
 262 <p>Next, it occurred to me that perhaps I could use VLC to create a
 263 video stream that Kodi could play.  Preferably using
 264 broadcast/multicast, to avoid having to change any setup on the Kodi
 265 side when starting such stream.  Unfortunately, the only recipe I
 266 could find using multicast used the rtp protocol, and this protocol
 267 seem to not be supported by Kodi.</p>
 268
 269 <p>On the other hand, the rtsp protocol is working!  Unfortunately I
 270 have to specify the IP address of the streaming machine in both the
 271 sending command and the file on the Kodi server.  But it is showing my
 272 desktop, and thus allow us to have a shared look on the big screen at
 273 the programs I work on.</p>
 274
 275 <p>I did not spend much time investigating codeces.  I combined the
 276 rtp and rtsp recipes from
 277 <a href="https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/">the
 278 VLC Streaming HowTo/Command Line Examples</a>, and was able to get
 279 this working on the desktop/streaming end.</p>
 280
 281 <blockquote><pre>
 282 vlc screen:// --sout \
 283   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}'
 284 </pre></blockquote>
 285
 286 <p>I ssh-ed into my Kodi box and created a file like this with the
 287 same IP address:</p>
 288
 289 <blockquote><pre>
 290 echo rtsp://192.168.11.4:8080/test.sdp \
 291   > /storage/videos/screenstream.m3u
 292 </pre></blockquote>
 293
 294 <p>Note the 192.168.11.4 IP address is my desktops IP address.  As far
 295 as I can tell the IP must be hardcoded for this to work.  In other
 296 words, if someone elses machine is going to do the steaming, you have
 297 to update screenstream.m3u on the Kodi machine and adjust the vlc
 298 recipe.  To get started, locate the file in Kodi and select the m3u
 299 file while the VLC stream is running.  The desktop then show up in my
 300 big screen. :)</p>
 301
 302 <p>When using the same technique to stream a video file with audio,
 303 the audio quality is really bad.  No idea if the problem is package
 304 loss or bad parameters for the transcode.  I do not know VLC nor Kodi
 305 enough to tell.</p>
 306
 307 <p><strong>Update 2018-07-12</strong>: Johannes Schauer send me a few
 308 succestions and reminded me about an important step.  The "screen:"
 309 input source is only available once the vlc-plugin-access-extra
 310 package is installed on Debian.  Without it, you will see this error
 311 message: "VLC is unable to open the MRL 'screen://'.  Check the log
 312 for details."  He further found that it is possible to drop some parts
 313 of the VLC command line to reduce the amount of hardcoded information.
 314 It is also useful to consider using cvlc to avoid having the VLC
 315 window in the desktop view.  In sum, this give us this command line on
 316 the source end
 317
 318 <blockquote><pre>
 319 cvlc screen:// --sout \
 320   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}'
 321 </pre></blockquote>
 322
 323 <p>and this on the Kodi end<p>
 324
 325 <blockquote><pre>
 326 echo rtsp://192.168.11.4:8080/ \
 327   > /storage/videos/screenstream.m3u
 328 </pre></blockquote>
 329
 330 <p>Still bad image quality, though.  But I did discover that streaming
 331 a DVD using dvdsimple:///dev/dvd as the source had excellent video and
 332 audio quality, so I guess the issue is in the input or transcoding
 333 parts, not the rtsp part.  I've tried to change the vb and ab
 334 parameters to use more bandwidth, but it did not make a
 335 difference.</p>
 336
 337 <p>I further received a suggestion from Einar Haraldseid to try using
 338 gstreamer instead of VLC, and this proved to work great!  He also
 339 provided me with the trick to get Kodi to use a multicast stream as
 340 its source.  By using this monstrous oneliner, I can stream my desktop
 341 with good video quality in reasonable framerate to the 239.255.0.1
 342 multicast address on port 1234:
 343
 344 <blockquote><pre>
 345 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 346   videoconvert ! queue2 ! \
 347   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 348   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 349   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 350   udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
 351   pulsesrc device=$(pactl list | grep -A2 'Source #' | \
 352     grep 'Name: .*\.monitor$' |  cut -d" " -f2|head -1) ! \
 353   audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
 354 </pre></blockquote>
 355
 356 <p>and this on the Kodi end<p>
 357
 358 <blockquote><pre>
 359 echo udp://@239.255.0.1:1234 \
 360   > /storage/videos/screenstream.m3u
 361 </pre></blockquote>
 362
 363 <p>Note the trick to pick a valid pulseaudio source.  It might not
 364 pick the one you need.  This approach will of course lead to trouble
 365 if more than one source uses the same multicast port and address.
 366 Note the ttl-mc=1 setting, which limit the multicast packages to the
 367 local network.  If the value is increased, your screen will be
 368 broadcasted further, one network "hop" for each increase (read up on
 369 multicast to learn more. :)!</p>
 370
 371 <p>Having cracked how to get Kodi to receive multicast streams, I
 372 could use this VLC command to stream to the same multicast address.
 373 The image quality is way better than the rtsp approach, but gstreamer
 374 seem to be doing a better job.</p>
 375
 376 <blockquote><pre>
 377 cvlc screen:// --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}'
 378 </pre></blockquote>
 379
 380 <p>As usual, if you use Bitcoin and want to show your support of my
 381 activities, please send Bitcoin donations to my address
 382 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 383 </div>
 384       <div class="tags">
 385
 386
 387         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>.
 388
 389
 390       </div>
 391     </div>
 392     <div class="padding"></div>
 393
 394     <div class="entry">
 395       <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>
 396       <div class="date"> 9th July 2018</div>
 397       <div class="body"><p>Five years ago,
 398 <a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html">I
 399 measured what the most supported MIME type in Debian was</a>, by
 400 analysing the desktop files in all packages in the archive.  Since
 401 then, the DEP-11 AppStream system has been put into production, making
 402 the task a lot easier.  This made me want to repeat the measurement,
 403 to see how much things changed.  Here are the new numbers, for
 404 unstable only this time:
 405
 406 <p><strong>Debian Unstable:</strong></p>
 407
 408 <pre>
 409   count MIME type
 410   ----- -----------------------
 411      56 image/jpeg
 412      55 image/png
 413      49 image/tiff
 414      48 image/gif
 415      39 image/bmp
 416      38 text/plain
 417      37 audio/mpeg
 418      34 application/ogg
 419      33 audio/x-flac
 420      32 audio/x-mp3
 421      30 audio/x-wav
 422      30 audio/x-vorbis+ogg
 423      29 image/x-portable-pixmap
 424      27 inode/directory
 425      27 image/x-portable-bitmap
 426      27 audio/x-mpeg
 427      26 application/x-ogg
 428      25 audio/x-mpegurl
 429      25 audio/ogg
 430      24 text/html
 431 </pre>
 432
 433 <p>The list was created like this using a sid chroot: "cat
 434 /var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk '/^
 435 - \S+\/\S+$/ {print $2 }' | sort | uniq -c | sort -nr | head -20"</p>
 436
 437 <p>It is interesting to see how image formats have passed text/plain
 438 as the most announced supported MIME type.  These days, thanks to the
 439 AppStream system, if you run into a file format you do not know, and
 440 want to figure out which packages support the format, you can find the
 441 MIME type of the file using "file --mime &lt;filename&gt;", and then
 442 look up all packages announcing support for this format in their
 443 AppStream metadata (XML or .desktop file) using "appstreamcli
 444 what-provides mimetype &lt;mime-type&gt;.  For example if you, like
 445 me, want to know which packages support inode/directory, you can get a
 446 list like this:</p>
 447
 448 <p><blockquote><pre>
 449 % appstreamcli what-provides mimetype inode/directory | grep Package: | sort
 450 Package: anjuta
 451 Package: audacious
 452 Package: baobab
 453 Package: cervisia
 454 Package: chirp
 455 Package: dolphin
 456 Package: doublecmd-common
 457 Package: easytag
 458 Package: enlightenment
 459 Package: ephoto
 460 Package: filelight
 461 Package: gwenview
 462 Package: k4dirstat
 463 Package: kaffeine
 464 Package: kdesvn
 465 Package: kid3
 466 Package: kid3-qt
 467 Package: nautilus
 468 Package: nemo
 469 Package: pcmanfm
 470 Package: pcmanfm-qt
 471 Package: qweborf
 472 Package: ranger
 473 Package: sirikali
 474 Package: spacefm
 475 Package: spacefm
 476 Package: vifm
 477 %
 478 </pre></blockquote></p>
 479
 480 <p>Using the same method, I can quickly discover that the Sketchup file
 481 format is not yet supported by any package in Debian:</p>
 482
 483 <p><blockquote><pre>
 484 % appstreamcli what-provides mimetype  application/vnd.sketchup.skp
 485 Could not find component providing 'mimetype::application/vnd.sketchup.skp'.
 486 %
 487 </pre></blockquote></p>
 488
 489 <p>Yesterday I used it to figure out which packages support the STL 3D
 490 format:</p>
 491
 492 <p><blockquote><pre>
 493 % appstreamcli what-provides mimetype  application/sla|grep Package
 494 Package: cura
 495 Package: meshlab
 496 Package: printrun
 497 %
 498 </pre></blockquote></p>
 499
 500 <p>PS: A new version of Cura was uploaded to Debian yesterday.</p>
 501
 502 <p>As usual, if you use Bitcoin and want to show your support of my
 503 activities, please send Bitcoin donations to my address
 504 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 505 </div>
 506       <div class="tags">
 507
 508
 509         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>.
 510
 511
 512       </div>
 513     </div>
 514     <div class="padding"></div>
 515
 516     <div class="entry">
 517       <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>
 518       <div class="date"> 8th July 2018</div>
 519       <div class="body"><p>Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
 520 for a while, and when I need to update it there is not enough free
 521 space on the disk for apt to do a normal 'apt upgrade'.  I normally
 522 would resolve the issue by doing 'apt install &lt;somepackages&gt;' to
 523 upgrade only some of the packages in one batch, until the amount of
 524 packages to download fall below the amount of free space available.
 525 Today, I had about 500 packages to upgrade, and after a while I got
 526 tired of trying to install chunks of packages manually.  I concluded
 527 that I did not have the spare hours required to complete the task, and
 528 decided to see if I could automate it.  I came up with this small
 529 script which I call 'apt-in-chunks':</p>
 530
 531 <p><blockquote><pre>
 532 #!/bin/sh
 533 #
 534 # Upgrade packages when the disk is too full to upgrade every
 535 # upgradable package in one lump.  Fetching packages to upgrade using
 536 # apt, and then installing using dpkg, to avoid changing the package
 537 # flag for manual/automatic.
 538
 539 set -e
 540
 541 ignore() {
 542     if [ "$1" ]; then
 543         grep -v "$1"
 544     else
 545         cat
 546     fi
 547 }
 548
 549 for p in $(apt list --upgradable | ignore "$@" |cut -d/ -f1 | grep -v '^Listing...'); do
 550     echo "Upgrading $p"
 551     apt clean
 552     apt install --download-only -y $p
 553     for f in /var/cache/apt/archives/*.deb; do
 554         if [ -e "$f" ]; then
 555             dpkg -i /var/cache/apt/archives/*.deb
 556             break
 557         fi
 558     done
 559 done
 560 </pre></blockquote></p>
 561
 562 <p>The script will extract the list of packages to upgrade, try to
 563 download the packages needed to upgrade one package, install the
 564 downloaded packages using dpkg.  The idea is to upgrade packages
 565 without changing the APT mark for the package (ie the one recording of
 566 the package was manually requested or pulled in as a dependency).  To
 567 use it, simply run it as root from the command line.  If it fail, try
 568 'apt install -f' to clean up the mess and run the script again.  This
 569 might happen if the new packages conflict with one of the old
 570 packages.  dpkg is unable to remove, while apt can do this.</p>
 571
 572 <p>It take one option, a package to ignore in the list of packages to
 573 upgrade.  The option to ignore a package is there to be able to skip
 574 the packages that are simply too large to unpack.  Today this was
 575 'ghc', but I have run into other large packages causing similar
 576 problems earlier (like TeX).</p>
 577
 578 <p>Update 2018-07-08: Thanks to Paul Wise, I am aware of two
 579 alternative ways to handle this.  The "unattended-upgrades
 580 --minimal-upgrade-steps" option will try to calculate upgrade sets for
 581 each package to upgrade, and then upgrade them in order, smallest set
 582 first.  It might be a better option than my above mentioned script.
 583 Also, "aptutude upgrade" can upgrade single packages, thus avoiding
 584 the need for using "dpkg -i" in the script above.</p>
 585
 586 <p>As usual, if you use Bitcoin and want to show your support of my
 587 activities, please send Bitcoin donations to my address
 588 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 589 </div>
 590       <div class="tags">
 591
 592
 593         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>.
 594
 595
 596       </div>
 597     </div>
 598     <div class="padding"></div>
 599
 600     <div class="entry">
 601       <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>
 602       <div class="date">30th June 2018</div>
 603       <div class="body"><p>So far, at least hydro-electric power, coal power, wind power,
 604 solar power, and wood power are well known.  Until a few days ago, I
 605 had never heard of stone power.  Then I learn about a quarry in a
 606 mountain in
 607 <a href="https://en.wikipedia.org/wiki/Bremanger">Bremanger</a> i
 608 Norway, where
 609 <a href="https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/">the
 610 Bremanger Quarry</a> company is extracting stone and dumping the stone
 611 into a shaft leading to its shipping harbour.  This downward movement
 612 in this shaft is used to produce electricity.  In short, it is using
 613 falling rocks instead of falling water to produce electricity, and
 614 according to its own statements it is producing more power than it is
 615 using, and selling the surplus electricity to the Norwegian power
 616 grid.  I find the concept truly amazing.  Is this the worlds only
 617 stone power plant?</p>
 618
 619 <p>As usual, if you use Bitcoin and want to show your support of my
 620 activities, please send Bitcoin donations to my address
 621 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 622 </div>
 623       <div class="tags">
 624
 625
 626         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 627
 628
 629       </div>
 630     </div>
 631     <div class="padding"></div>
 632
 633     <div class="entry">
 634       <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>
 635       <div class="date">26th June 2018</div>
 636       <div class="body"><p>My movie playing setup involve <a href="https://kodi.tv/">Kodi</a>,
 637 <a href="https://openelec.tv">OpenELEC</a> (probably soon to be
 638 replaced with <a href="https://libreelec.tv/">LibreELEC</a>) and an
 639 Infocus IN76 video projector.  My projector can be controlled via both
 640 a infrared remote controller, and a RS-232 serial line.  The vendor of
 641 my projector, <a href="https://www.infocus.com/">InFocus</a>, had been
 642 sensible enough to document the serial protocol in its user manual, so
 643 it is easily available, and I used it some years ago to write
 644 <a href="https://github.com/petterreinholdtsen/infocus-projector-control">a
 645 small script to control the projector</a>.  For a while now, I longed
 646 for a setup where the projector was controlled by Kodi, for example in
 647 such a way that when the screen saver went on, the projector was
 648 turned off, and when the screen saver exited, the projector was turned
 649 on again.</p>
 650
 651 <p>A few days ago, with very good help from parts of my family, I
 652 managed to find a Kodi Add-on for controlling a Epson projector, and
 653 got in touch with its author to see if we could join forces and make a
 654 Add-on with support for several projectors.  To my pleasure, he was
 655 positive to the idea, and we set out to add InFocus support to his
 656 add-on, and make the add-on suitable for the official Kodi add-on
 657 repository.</p>
 658
 659 <p>The Add-on is now working (for me, at least), with a few minor
 660 adjustments.  The most important change I do relative to the master
 661 branch in the github repository is embedding the
 662 <a href="https://github.com/pyserial/pyserial">pyserial module</a> in
 663 the add-on.  The long term solution is to make a "script" type
 664 pyserial module for Kodi, that can be pulled in as a dependency in
 665 Kodi.  But until that in place, I embed it.</p>
 666
 667 <p>The add-on can be configured to turn on the projector when Kodi
 668 starts, off when Kodi stops as well as turn the projector off when the
 669 screensaver start and on when the screesaver stops.  It can also be
 670 told to set the projector source when turning on the projector.
 671
 672 <p>If this sound interesting to you, check out
 673 <a href="https://github.com/fredrik-eriksson/kodi_projcontrol">the
 674 project github repository</a>.  Perhaps you can send patches to
 675 support your projector too?  As soon as we find time to wrap up the
 676 latest changes, it should be available for easy installation using any
 677 Kodi instance.</p>
 678
 679 <p>For future improvements, I would like to add projector model
 680 detection and the ability to adjust the brightness level of the
 681 projector from within Kodi.  We also need to figure out how to handle
 682 the cooling period of the projector.  My projector refuses to turn on
 683 for 60 seconds after it was turned off.  This is not handled well by
 684 the add-on at the moment.</p>
 685
 686 <p>As usual, if you use Bitcoin and want to show your support of my
 687 activities, please send Bitcoin donations to my address
 688 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 689 </div>
 690       <div class="tags">
 691
 692
 693         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>.
 694
 695
 696       </div>
 697     </div>
 698     <div class="padding"></div>
 699
 700     <div class="entry">
 701       <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>
 702       <div class="date">28th April 2018</div>
 703       <div class="body"><p>I <a href="https://no.wikipedia.org/wiki/VHS">VHS-kassettenes</a>
 704 tid var det rett frem å ta vare på et TV-program en ønsket å kunne se
 705 senere, uten å være avhengig av at programmet ble sendt på nytt.
 706 Kanskje ønsket en å se programmet på hytten der det ikke var
 707 TV-signal, eller av andre grunner ha det tilgjengelig for fremtidig
 708 fornøyelse.  Dette er blitt vanskeligere med introduksjon av
 709 digital-TV og webstreaming, der opptak til harddisk er utenfor de
 710 flestes kontroll hvis de bruker ufri programvare og bokser kontrollert
 711 av andre.  Men for NRK her i Norge, finnes det heldigvis flere fri
 712 programvare-alternativer, som jeg har
 713 <a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK.html">skrevet</a>
 714 <a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK_med_den__nye__l_sningen.html">om</a>
 715 <a href="http://people.skolelinux.org/pere/blog/Nedlasting_fra_NRK__som_Matroska_med_undertekster.html">før</a>.
 716 Så lenge kilden for nedlastingen er lovlig lagt ut på nett (hvilket
 717 jeg antar NRK gjør), så er slik lagring til privat bruk også lovlig i
 718 Norge.</p>
 719
 720 <p>Sist jeg så på saken, i 2016, nevnte jeg at
 721 <a href="https://rg3.github.com/youtube-dl/">youtube-dl</a> ikke kunne
 722 bake undertekster fra NRK inn i videofilene, og at jeg derfor
 723 foretrakk andre alternativer.  Nylig oppdaget jeg at dette har endret
 724 seg.  Fordelen med youtube-dl er at den er tilgjengelig direkte fra
 725 Linux-distribusjoner som <a href="https://www.debian.org/">Debian</a>
 726 og <a href="https://www.ubuntu.com/">Ubuntu</a>, slik at en slipper å
 727 finne ut selv hvordan en skal få dem til å virke.</p>
 728
 729 <p>For å laste ned et NRK-innslag med undertekster, og få den norske
 730 underteksten pakket inn i videofilen, så kan følgende kommando
 731 brukes:</p>
 732
 733 <p><pre>
 734 youtube-dl --write-sub --sub-format ttml \
 735   --convert-subtitles srt --embed-subs \
 736   https://tv.nrk.no/serie/ramm-ferdig-gaa/MUHU11000316/27-04-2018
 737 </pre></p>
 738
 739 <p>URL-eksemplet er dagens toppsak på tv.nrk.no.  Resultatet er en
 740 MP4-fil med filmen og undertekster som kan spilles av med VLC.  Merk
 741 at VLC ikke viser frem undertekster før du aktiverer dem.  For å gjøre
 742 det, høyreklikk med musa i fremviservinduet, velg menyvalget for
 743 undertekst og så norsk språk.  Jeg testet også '--write-auto-sub',
 744 men det kommandolinjeargumentet ser ikke ut til å fungere, så jeg
 745 endte opp med settet med argumentlisten over, som jeg fant i en
 746 feilrapport i youtube-dl-prosjektets samling over feilrapporter.</p>
 747
 748 <p>Denne støtten i youtube-dl gjør det svært enkelt å lagre
 749 NRK-innslag, det være seg nyheter, filmer, serier eller dokumentater,
 750 for å ha dem tilgjengelig for fremtidig referanse og bruk, uavhengig
 751 av hvor lenge innslagene ligger tilgjengelig hos NRK.  Så får det ikke
 752 hjelpe at NRKs jurister mener at det er
 753 <a href="http://people.skolelinux.org/pere/blog/Best___ikke_fortelle_noen_at_streaming_er_nedlasting___.html">vesensforskjellig
 754 å legge tilgjengelig for nedlasting og for streaming</a>, når det rent
 755 teknisk er samme sak.</p>
 756
 757 <p>Programmet youtube-dl støtter også en rekke andre nettsteder, se
 758 prosjektoversikten for
 759 <a href="http://rg3.github.io/youtube-dl/supportedsites.html">en
 760 komplett liste</a>.</p>
 761 </div>
 762       <div class="tags">
 763
 764
 765         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>.
 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/Stortingsflertallet_g_r_inn_for_ny_IP_basert_sensurinfrastruktur_i_Norge.html">Stortingsflertallet går inn for ny IP-basert sensurinfrastruktur i Norge</a></div>
 774       <div class="date">24th April 2018</div>
 775       <div class="body"><p><a href="https://www.vg.no/sport/i/J1g8zj/stortingsvedtak-snart-ip-blokkerer-utenlandske-spillselskaper">VG</a>,
 776 <a href="https://www.dagbladet.no/nyheter/stortinget-blokkerer-utenlandske-spillselskaper/69740219">Dagbladet</a>
 777 og
 778 <a href="https://www.nrk.no/ostfold/tar-opp-kampen-mot-utenlandske-spillselskap-1.14021381">NRK</a>
 779 melder i dag at flertallet i Familie- og kulturkomiteen på Stortinget
 780 har bestemt seg for å introdusere en ny sensurinfrastruktur i Norge.
 781 Fra før har Norge en «frivillig» sensurinfrastruktur basert på
 782 DNS-navn, der de største ISP-ene basert på en liste med DNS-navn
 783 forgifter DNS-svar og omdirigerer til et annet IP-nummer enn det som
 784 ligger i DNS.  Nå kommer altså IP-basert omdirigering i tillegg.  Når
 785 infrastrukturen er på plass, er sensur av IP-adresser redusert et
 786 spørsmål om hvilke IP-nummer som skal blokkeres.  Listen over
 787 IP-adresser vil naturligvis endre seg etter hvert som myndighetene
 788 endrer seg.  Det er ingen betryggende tanke.</p>
 789 </div>
 790       <div class="tags">
 791
 792
 793         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
 794
 795
 796       </div>
 797     </div>
 798     <div class="padding"></div>
 799
 800     <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>
 801     <div id="sidebar">
 802
 803
 804
 805 <h2>Archive</h2>
 806 <ul>
 807
 808 <li>2018
 809 <ul>
 810
 811 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 812
 813 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 814
 815 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 816
 817 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 818
 819 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 820
 821 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 822
 823 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (1)</a></li>
 824
 825 </ul></li>
 826
 827 <li>2017
 828 <ul>
 829
 830 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 831
 832 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 833
 834 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 835
 836 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 837
 838 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 839
 840 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 841
 842 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 843
 844 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 845
 846 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 847
 848 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 849
 850 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 851
 852 </ul></li>
 853
 854 <li>2016
 855 <ul>
 856
 857 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 858
 859 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 860
 861 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 862
 863 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 864
 865 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 866
 867 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 868
 869 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 870
 871 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 872
 873 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 874
 875 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 876
 877 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 878
 879 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 880
 881 </ul></li>
 882
 883 <li>2015
 884 <ul>
 885
 886 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 887
 888 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 889
 890 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 891
 892 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 893
 894 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 895
 896 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 897
 898 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 899
 900 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 901
 902 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 903
 904 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 905
 906 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 907
 908 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 909
 910 </ul></li>
 911
 912 <li>2014
 913 <ul>
 914
 915 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 916
 917 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 918
 919 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 920
 921 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 922
 923 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 924
 925 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 926
 927 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 928
 929 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 930
 931 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 932
 933 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 934
 935 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 936
 937 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 938
 939 </ul></li>
 940
 941 <li>2013
 942 <ul>
 943
 944 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 945
 946 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 947
 948 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 949
 950 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 951
 952 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 953
 954 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 955
 956 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 957
 958 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 959
 960 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 961
 962 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 963
 964 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 965
 966 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 967
 968 </ul></li>
 969
 970 <li>2012
 971 <ul>
 972
 973 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 974
 975 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 976
 977 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 978
 979 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 980
 981 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 982
 983 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 984
 985 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 986
 987 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 988
 989 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 990
 991 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 992
 993 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 994
 995 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 996
 997 </ul></li>
 998
 999 <li>2011
1000 <ul>
1001
1002 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
1003
1004 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
1005
1006 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
1007
1008 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
1009
1010 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
1011
1012 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
1013
1014 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
1015
1016 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
1017
1018 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
1019
1020 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
1021
1022 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
1023
1024 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
1025
1026 </ul></li>
1027
1028 <li>2010
1029 <ul>
1030
1031 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1032
1033 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1034
1035 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1036
1037 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1038
1039 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1040
1041 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1042
1043 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1044
1045 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1046
1047 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1048
1049 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1050
1051 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1052
1053 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1054
1055 </ul></li>
1056
1057 <li>2009
1058 <ul>
1059
1060 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1061
1062 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1063
1064 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1065
1066 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1067
1068 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1069
1070 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1071
1072 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1073
1074 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1075
1076 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1077
1078 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1079
1080 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1081
1082 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1083
1084 </ul></li>
1085
1086 <li>2008
1087 <ul>
1088
1089 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1090
1091 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1092
1093 </ul></li>
1094
1095 </ul>
1096
1097
1098
1099 <h2>Tags</h2>
1100 <ul>
1101
1102  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
1103
1104  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1105
1106  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1107
1108  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1109
1110  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (9)</a></li>
1111
1112  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
1113
1114  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1115
1116  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1117
1118  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (161)</a></li>
1119
1120  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
1121
1122  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
1123
1124  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1125
1126  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
1127
1128  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (25)</a></li>
1129
1130  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1131
1132  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (380)</a></li>
1133
1134  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1135
1136  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (13)</a></li>
1137
1138  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (32)</a></li>
1139
1140  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1141
1142  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1143
1144  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1145
1146  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1147
1148  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
1149
1150  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
1151
1152  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1153
1154  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
1155
1156  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1157
1158  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1159
1160  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1161
1162  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1163
1164  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
1165
1166  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (10)</a></li>
1167
1168  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
1169
1170  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (190)</a></li>
1171
1172  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
1173
1174  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1175
1176  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (71)</a></li>
1177
1178  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
1179
1180  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1181
1182  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1183
1184  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1185
1186  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1187
1188  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
1189
1190  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1191
1192  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
1193
1194  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1195
1196  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (54)</a></li>
1197
1198  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1199
1200  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1201
1202  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
1203
1204  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
1205
1206  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
1207
1208  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
1209
1210  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
1211
1212  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1213
1214  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1215
1216  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (11)</a></li>
1217
1218  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (66)</a></li>
1219
1220  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1221
1222  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
1223
1224 </ul>
1225
1226
1227     </div>
1228     <p style="text-align: right">
1229  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1230 </p>
1231
1232   </body>
1233 </html>