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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/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>
  24       <div class="date">31st July 2018</div>
  25       <div class="body"><p>For a while now, I have looked for a sensible way to share images
  26 with my family using a self hosted solution, as it is unacceptable to
  27 place images from my personal life under the control of strangers
  28 working for data hoarders like Google or Dropbox.  The last few days I
  29 have drafted an approach that might work out, and I would like to
  30 share it with you.  I would like to publish images on a server under
  31 my control, and point some Internet connected display units using some
  32 free and open standard to the images I published.  As my primary
  33 language is not limited to ASCII, I need to store metadata using
  34 UTF-8.  Many years ago, I hoped to find a digital photo frame capable
  35 of reading a RSS feed with image references (aka using the
  36 &lt;enclosure&gt; RSS tag), but was unable to find a current supplier
  37 of such frames.  In the end I gave up that approach.</p>
  38
  39 <p>Some months ago, I discovered that
  40 <a href="https://www.jwz.org/xscreensaver/">XScreensaver</a> is able to
  41 read images from a RSS feed, and used it to set up a screen saver on
  42 my home info screen, showing images from the Daily images feed from
  43 NASA.  This proved to work well.  More recently I discovered that
  44 <a href="https://kodi.tv">Kodi</a> (both using
  45 <a href="https://www.openelec.tv/">OpenELEC</a> and
  46 <a href="https://libreelec.tv">LibreELEC</a>) provide the
  47 <a href="https://github.com/grinsted/script.screensaver.feedreader">Feedreader</a>
  48 screen saver capable of reading a RSS feed with images and news.  For
  49 fun, I used it this summer to test Kodi on my parents TV by hooking up
  50 a Raspberry PI unit with LibreELEC, and wanted to provide them with a
  51 screen saver showing selected pictures from my selection.</p>
  52
  53 <p>Armed with motivation and a test photo frame, I set out to generate
  54 a RSS feed for the Kodi instance.  I adjusted my <a
  55 href="https://freedombox.org/">Freedombox</a> instance, created
  56 /var/www/html/privatepictures/, wrote a small Perl script to extract
  57 title and description metadata from the photo files and generate the
  58 RSS file.  I ended up using Perl instead of python, as the
  59 libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
  60 tags I ended up using, while python3-exif did not.  The relevant EXIF
  61 tags only support ASCII, so I had to find better alternatives.  XMP
  62 seem to have the support I need.</p>
  63
  64 <p>I am a bit unsure which EXIF/XMP tags to use, as I would like to
  65 use tags that can be easily added/updated using normal free software
  66 photo managing software.  I ended up using the tags set using this
  67 exiftool command, as these tags can also be set using digiKam:</p>
  68
  69 <blockquote><pre>
  70 exiftool -headline='The RSS image title' \
  71   -description='The RSS image description.' \
  72   -subject+=for-family photo.jpeg
  73 </pre></blockquote>
  74
  75 <p>I initially tried the "-title" and "keyword" tags, but they were
  76 invisible in digiKam, so I changed to "-headline" and "-subject".  I
  77 use the keyword/subject 'for-family' to flag that the photo should be
  78 shared with my family.  Images with this keyword set are located and
  79 copied into my Freedombox for the RSS generating script to find.</p>
  80
  81 <p>Are there better ways to do this?  Get in touch if you have better
  82 suggestions.</p>
  83
  84 <p>As usual, if you use Bitcoin and want to show your support of my
  85 activities, please send Bitcoin donations to my address
  86 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  87 </div>
  88       <div class="tags">
  89
  90
  91         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>.
  92
  93
  94       </div>
  95     </div>
  96     <div class="padding"></div>
  97
  98     <div class="entry">
  99       <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>
 100       <div class="date">12th July 2018</div>
 101       <div class="body"><p>Last night, I wrote
 102 <a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">a
 103 recipe to stream a Linux desktop using VLC to a instance of Kodi</a>.
 104 During the day I received valuable feedback, and thanks to the
 105 suggestions I have been able to rewrite the recipe into a much simpler
 106 approach requiring no setup at all.  It is a single script that take
 107 care of it all.</p>
 108
 109 <p>This new script uses GStreamer instead of VLC to capture the
 110 desktop and stream it to Kodi.  This fixed the video quality issue I
 111 saw initially.  It further removes the need to add a m3u file on the
 112 Kodi machine, as it instead connects to
 113 <a href="https://kodi.wiki/view/JSON-RPC_API/v8">the JSON-RPC API in
 114 Kodi</a> and simply ask Kodi to play from the stream created using
 115 GStreamer.  Streaming the desktop to Kodi now become trivial.  Copy
 116 the script below, run it with the DNS name or IP address of the kodi
 117 server to stream to as the only argument, and watch your screen show
 118 up on the Kodi screen.  Note, it depend on multicast on the local
 119 network, so if you need to stream outside the local network, the
 120 script must be modified.  Also note, I have no idea if audio work, as
 121 I only care about the picture part.</p>
 122
 123 <blockquote><pre>
 124 #!/bin/sh
 125 #
 126 # Stream the Linux desktop view to Kodi.  See
 127 # http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
 128 # for backgorund information.
 129
 130 # Make sure the stream is stopped in Kodi and the gstreamer process is
 131 # killed if something go wrong (for example if curl is unable to find the
 132 # kodi server).  Do the same when interrupting this script.
 133 kodicmd() {
 134     host="$1"
 135     cmd="$2"
 136     params="$3"
 137     curl --silent --header 'Content-Type: application/json' \
 138          --data-binary "{ \"id\": 1, \"jsonrpc\": \"2.0\", \"method\": \"$cmd\", \"params\": $params }" \
 139          "http://$host/jsonrpc"
 140 }
 141 cleanup() {
 142     if [ -n "$kodihost" ] ; then
 143         # Stop the playing when we end
 144         playerid=$(kodicmd "$kodihost" Player.GetActivePlayers "{}" |
 145                             jq .result[].playerid)
 146         kodicmd "$kodihost" Player.Stop "{ \"playerid\" : $playerid }" > /dev/null
 147     fi
 148     if [ "$gstpid" ] && kill -0 "$gstpid" >/dev/null 2>&1; then
 149         kill "$gstpid"
 150     fi
 151 }
 152 trap cleanup EXIT INT
 153
 154 if [ -n "$1" ]; then
 155     kodihost=$1
 156     shift
 157 else
 158     kodihost=kodi.local
 159 fi
 160
 161 mcast=239.255.0.1
 162 mcastport=1234
 163 mcastttl=1
 164
 165 pasrc=$(pactl list | grep -A2 'Source #' | grep 'Name: .*\.monitor$' | \
 166   cut -d" " -f2|head -1)
 167 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 168   videoconvert ! queue2 ! \
 169   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 170   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 171   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 172   udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
 173   pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
 174   > /dev/null 2>&1 &
 175 gstpid=$!
 176
 177 # Give stream a second to get going
 178 sleep 1
 179
 180 # Ask kodi to start streaming using its JSON-RPC API
 181 kodicmd "$kodihost" Player.Open \
 182         "{\"item\": { \"file\": \"udp://@$mcast:$mcastport\" } }" > /dev/null
 183
 184 # wait for gst to end
 185 wait "$gstpid"
 186 </pre></blockquote>
 187
 188 <p>I hope you find the approach useful.  I know I do.</p>
 189
 190 <p>As usual, if you use Bitcoin and want to show your support of my
 191 activities, please send Bitcoin donations to my address
 192 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 193 </div>
 194       <div class="tags">
 195
 196
 197         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>.
 198
 199
 200       </div>
 201     </div>
 202     <div class="padding"></div>
 203
 204     <div class="entry">
 205       <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>
 206       <div class="date">12th July 2018</div>
 207       <div class="body"><p>PS: See
 208 <ahref="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">the
 209 followup post</a> for a even better approach.</p>
 210
 211 <p>A while back, I was asked by a friend how to stream the desktop to
 212 my projector connected to Kodi.  I sadly had to admit that I had no
 213 idea, as it was a task I never had tried.  Since then, I have been
 214 looking for a way to do so, preferable without much extra software to
 215 install on either side.  Today I found a way that seem to kind of
 216 work.  Not great, but it is a start.</p>
 217
 218 <p>I had a look at several approaches, for example
 219 <a href="https://github.com/mfoetsch/dlna_live_streaming">using uPnP
 220 DLNA as described in 2011</a>, but it required a uPnP server, fuse and
 221 local storage enough to store the stream locally.  This is not going
 222 to work well for me, lacking enough free space, and it would
 223 impossible for my friend to get working.</p>
 224
 225 <p>Next, it occurred to me that perhaps I could use VLC to create a
 226 video stream that Kodi could play.  Preferably using
 227 broadcast/multicast, to avoid having to change any setup on the Kodi
 228 side when starting such stream.  Unfortunately, the only recipe I
 229 could find using multicast used the rtp protocol, and this protocol
 230 seem to not be supported by Kodi.</p>
 231
 232 <p>On the other hand, the rtsp protocol is working!  Unfortunately I
 233 have to specify the IP address of the streaming machine in both the
 234 sending command and the file on the Kodi server.  But it is showing my
 235 desktop, and thus allow us to have a shared look on the big screen at
 236 the programs I work on.</p>
 237
 238 <p>I did not spend much time investigating codeces.  I combined the
 239 rtp and rtsp recipes from
 240 <a href="https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/">the
 241 VLC Streaming HowTo/Command Line Examples</a>, and was able to get
 242 this working on the desktop/streaming end.</p>
 243
 244 <blockquote><pre>
 245 vlc screen:// --sout \
 246   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}'
 247 </pre></blockquote>
 248
 249 <p>I ssh-ed into my Kodi box and created a file like this with the
 250 same IP address:</p>
 251
 252 <blockquote><pre>
 253 echo rtsp://192.168.11.4:8080/test.sdp \
 254   > /storage/videos/screenstream.m3u
 255 </pre></blockquote>
 256
 257 <p>Note the 192.168.11.4 IP address is my desktops IP address.  As far
 258 as I can tell the IP must be hardcoded for this to work.  In other
 259 words, if someone elses machine is going to do the steaming, you have
 260 to update screenstream.m3u on the Kodi machine and adjust the vlc
 261 recipe.  To get started, locate the file in Kodi and select the m3u
 262 file while the VLC stream is running.  The desktop then show up in my
 263 big screen. :)</p>
 264
 265 <p>When using the same technique to stream a video file with audio,
 266 the audio quality is really bad.  No idea if the problem is package
 267 loss or bad parameters for the transcode.  I do not know VLC nor Kodi
 268 enough to tell.</p>
 269
 270 <p><strong>Update 2018-07-12</strong>: Johannes Schauer send me a few
 271 succestions and reminded me about an important step.  The "screen:"
 272 input source is only available once the vlc-plugin-access-extra
 273 package is installed on Debian.  Without it, you will see this error
 274 message: "VLC is unable to open the MRL 'screen://'.  Check the log
 275 for details."  He further found that it is possible to drop some parts
 276 of the VLC command line to reduce the amount of hardcoded information.
 277 It is also useful to consider using cvlc to avoid having the VLC
 278 window in the desktop view.  In sum, this give us this command line on
 279 the source end
 280
 281 <blockquote><pre>
 282 cvlc screen:// --sout \
 283   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}'
 284 </pre></blockquote>
 285
 286 <p>and this on the Kodi end<p>
 287
 288 <blockquote><pre>
 289 echo rtsp://192.168.11.4:8080/ \
 290   > /storage/videos/screenstream.m3u
 291 </pre></blockquote>
 292
 293 <p>Still bad image quality, though.  But I did discover that streaming
 294 a DVD using dvdsimple:///dev/dvd as the source had excellent video and
 295 audio quality, so I guess the issue is in the input or transcoding
 296 parts, not the rtsp part.  I've tried to change the vb and ab
 297 parameters to use more bandwidth, but it did not make a
 298 difference.</p>
 299
 300 <p>I further received a suggestion from Einar Haraldseid to try using
 301 gstreamer instead of VLC, and this proved to work great!  He also
 302 provided me with the trick to get Kodi to use a multicast stream as
 303 its source.  By using this monstrous oneliner, I can stream my desktop
 304 with good video quality in reasonable framerate to the 239.255.0.1
 305 multicast address on port 1234:
 306
 307 <blockquote><pre>
 308 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 309   videoconvert ! queue2 ! \
 310   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 311   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 312   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 313   udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
 314   pulsesrc device=$(pactl list | grep -A2 'Source #' | \
 315     grep 'Name: .*\.monitor$' |  cut -d" " -f2|head -1) ! \
 316   audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
 317 </pre></blockquote>
 318
 319 <p>and this on the Kodi end<p>
 320
 321 <blockquote><pre>
 322 echo udp://@239.255.0.1:1234 \
 323   > /storage/videos/screenstream.m3u
 324 </pre></blockquote>
 325
 326 <p>Note the trick to pick a valid pulseaudio source.  It might not
 327 pick the one you need.  This approach will of course lead to trouble
 328 if more than one source uses the same multicast port and address.
 329 Note the ttl-mc=1 setting, which limit the multicast packages to the
 330 local network.  If the value is increased, your screen will be
 331 broadcasted further, one network "hop" for each increase (read up on
 332 multicast to learn more. :)!</p>
 333
 334 <p>Having cracked how to get Kodi to receive multicast streams, I
 335 could use this VLC command to stream to the same multicast address.
 336 The image quality is way better than the rtsp approach, but gstreamer
 337 seem to be doing a better job.</p>
 338
 339 <blockquote><pre>
 340 cvlc screen:// --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}'
 341 </pre></blockquote>
 342
 343 <p>As usual, if you use Bitcoin and want to show your support of my
 344 activities, please send Bitcoin donations to my address
 345 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 346 </div>
 347       <div class="tags">
 348
 349
 350         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>.
 351
 352
 353       </div>
 354     </div>
 355     <div class="padding"></div>
 356
 357     <div class="entry">
 358       <div class="title"><a href="http://people.skolelinux.org/pere/blog/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>
 359       <div class="date"> 9th July 2018</div>
 360       <div class="body"><p>Five years ago,
 361 <a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html">I
 362 measured what the most supported MIME type in Debian was</a>, by
 363 analysing the desktop files in all packages in the archive.  Since
 364 then, the DEP-11 AppStream system has been put into production, making
 365 the task a lot easier.  This made me want to repeat the measurement,
 366 to see how much things changed.  Here are the new numbers, for
 367 unstable only this time:
 368
 369 <p><strong>Debian Unstable:</strong></p>
 370
 371 <pre>
 372   count MIME type
 373   ----- -----------------------
 374      56 image/jpeg
 375      55 image/png
 376      49 image/tiff
 377      48 image/gif
 378      39 image/bmp
 379      38 text/plain
 380      37 audio/mpeg
 381      34 application/ogg
 382      33 audio/x-flac
 383      32 audio/x-mp3
 384      30 audio/x-wav
 385      30 audio/x-vorbis+ogg
 386      29 image/x-portable-pixmap
 387      27 inode/directory
 388      27 image/x-portable-bitmap
 389      27 audio/x-mpeg
 390      26 application/x-ogg
 391      25 audio/x-mpegurl
 392      25 audio/ogg
 393      24 text/html
 394 </pre>
 395
 396 <p>The list was created like this using a sid chroot: "cat
 397 /var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk '/^
 398 - \S+\/\S+$/ {print $2 }' | sort | uniq -c | sort -nr | head -20"</p>
 399
 400 <p>It is interesting to see how image formats have passed text/plain
 401 as the most announced supported MIME type.  These days, thanks to the
 402 AppStream system, if you run into a file format you do not know, and
 403 want to figure out which packages support the format, you can find the
 404 MIME type of the file using "file --mime &lt;filename&gt;", and then
 405 look up all packages announcing support for this format in their
 406 AppStream metadata (XML or .desktop file) using "appstreamcli
 407 what-provides mimetype &lt;mime-type&gt;.  For example if you, like
 408 me, want to know which packages support inode/directory, you can get a
 409 list like this:</p>
 410
 411 <p><blockquote><pre>
 412 % appstreamcli what-provides mimetype inode/directory | grep Package: | sort
 413 Package: anjuta
 414 Package: audacious
 415 Package: baobab
 416 Package: cervisia
 417 Package: chirp
 418 Package: dolphin
 419 Package: doublecmd-common
 420 Package: easytag
 421 Package: enlightenment
 422 Package: ephoto
 423 Package: filelight
 424 Package: gwenview
 425 Package: k4dirstat
 426 Package: kaffeine
 427 Package: kdesvn
 428 Package: kid3
 429 Package: kid3-qt
 430 Package: nautilus
 431 Package: nemo
 432 Package: pcmanfm
 433 Package: pcmanfm-qt
 434 Package: qweborf
 435 Package: ranger
 436 Package: sirikali
 437 Package: spacefm
 438 Package: spacefm
 439 Package: vifm
 440 %
 441 </pre></blockquote></p>
 442
 443 <p>Using the same method, I can quickly discover that the Sketchup file
 444 format is not yet supported by any package in Debian:</p>
 445
 446 <p><blockquote><pre>
 447 % appstreamcli what-provides mimetype  application/vnd.sketchup.skp
 448 Could not find component providing 'mimetype::application/vnd.sketchup.skp'.
 449 %
 450 </pre></blockquote></p>
 451
 452 <p>Yesterday I used it to figure out which packages support the STL 3D
 453 format:</p>
 454
 455 <p><blockquote><pre>
 456 % appstreamcli what-provides mimetype  application/sla|grep Package
 457 Package: cura
 458 Package: meshlab
 459 Package: printrun
 460 %
 461 </pre></blockquote></p>
 462
 463 <p>PS: A new version of Cura was uploaded to Debian yesterday.</p>
 464
 465 <p>As usual, if you use Bitcoin and want to show your support of my
 466 activities, please send Bitcoin donations to my address
 467 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 468 </div>
 469       <div class="tags">
 470
 471
 472         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>.
 473
 474
 475       </div>
 476     </div>
 477     <div class="padding"></div>
 478
 479     <div class="entry">
 480       <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>
 481       <div class="date"> 8th July 2018</div>
 482       <div class="body"><p>Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
 483 for a while, and when I need to update it there is not enough free
 484 space on the disk for apt to do a normal 'apt upgrade'.  I normally
 485 would resolve the issue by doing 'apt install &lt;somepackages&gt;' to
 486 upgrade only some of the packages in one batch, until the amount of
 487 packages to download fall below the amount of free space available.
 488 Today, I had about 500 packages to upgrade, and after a while I got
 489 tired of trying to install chunks of packages manually.  I concluded
 490 that I did not have the spare hours required to complete the task, and
 491 decided to see if I could automate it.  I came up with this small
 492 script which I call 'apt-in-chunks':</p>
 493
 494 <p><blockquote><pre>
 495 #!/bin/sh
 496 #
 497 # Upgrade packages when the disk is too full to upgrade every
 498 # upgradable package in one lump.  Fetching packages to upgrade using
 499 # apt, and then installing using dpkg, to avoid changing the package
 500 # flag for manual/automatic.
 501
 502 set -e
 503
 504 ignore() {
 505     if [ "$1" ]; then
 506         grep -v "$1"
 507     else
 508         cat
 509     fi
 510 }
 511
 512 for p in $(apt list --upgradable | ignore "$@" |cut -d/ -f1 | grep -v '^Listing...'); do
 513     echo "Upgrading $p"
 514     apt clean
 515     apt install --download-only -y $p
 516     for f in /var/cache/apt/archives/*.deb; do
 517         if [ -e "$f" ]; then
 518             dpkg -i /var/cache/apt/archives/*.deb
 519             break
 520         fi
 521     done
 522 done
 523 </pre></blockquote></p>
 524
 525 <p>The script will extract the list of packages to upgrade, try to
 526 download the packages needed to upgrade one package, install the
 527 downloaded packages using dpkg.  The idea is to upgrade packages
 528 without changing the APT mark for the package (ie the one recording of
 529 the package was manually requested or pulled in as a dependency).  To
 530 use it, simply run it as root from the command line.  If it fail, try
 531 'apt install -f' to clean up the mess and run the script again.  This
 532 might happen if the new packages conflict with one of the old
 533 packages.  dpkg is unable to remove, while apt can do this.</p>
 534
 535 <p>It take one option, a package to ignore in the list of packages to
 536 upgrade.  The option to ignore a package is there to be able to skip
 537 the packages that are simply too large to unpack.  Today this was
 538 'ghc', but I have run into other large packages causing similar
 539 problems earlier (like TeX).</p>
 540
 541 <p>Update 2018-07-08: Thanks to Paul Wise, I am aware of two
 542 alternative ways to handle this.  The "unattended-upgrades
 543 --minimal-upgrade-steps" option will try to calculate upgrade sets for
 544 each package to upgrade, and then upgrade them in order, smallest set
 545 first.  It might be a better option than my above mentioned script.
 546 Also, "aptutude upgrade" can upgrade single packages, thus avoiding
 547 the need for using "dpkg -i" in the script above.</p>
 548
 549 <p>As usual, if you use Bitcoin and want to show your support of my
 550 activities, please send Bitcoin donations to my address
 551 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 552 </div>
 553       <div class="tags">
 554
 555
 556         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>.
 557
 558
 559       </div>
 560     </div>
 561     <div class="padding"></div>
 562
 563     <div class="entry">
 564       <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>
 565       <div class="date">30th June 2018</div>
 566       <div class="body"><p>So far, at least hydro-electric power, coal power, wind power,
 567 solar power, and wood power are well known.  Until a few days ago, I
 568 had never heard of stone power.  Then I learn about a quarry in a
 569 mountain in
 570 <a href="https://en.wikipedia.org/wiki/Bremanger">Bremanger</a> i
 571 Norway, where
 572 <a href="https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/">the
 573 Bremanger Quarry</a> company is extracting stone and dumping the stone
 574 into a shaft leading to its shipping harbour.  This downward movement
 575 in this shaft is used to produce electricity.  In short, it is using
 576 falling rocks instead of falling water to produce electricity, and
 577 according to its own statements it is producing more power than it is
 578 using, and selling the surplus electricity to the Norwegian power
 579 grid.  I find the concept truly amazing.  Is this the worlds only
 580 stone power plant?</p>
 581
 582 <p>As usual, if you use Bitcoin and want to show your support of my
 583 activities, please send Bitcoin donations to my address
 584 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 585 </div>
 586       <div class="tags">
 587
 588
 589         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 590
 591
 592       </div>
 593     </div>
 594     <div class="padding"></div>
 595
 596     <div class="entry">
 597       <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>
 598       <div class="date">26th June 2018</div>
 599       <div class="body"><p>My movie playing setup involve <a href="https://kodi.tv/">Kodi</a>,
 600 <a href="https://openelec.tv">OpenELEC</a> (probably soon to be
 601 replaced with <a href="https://libreelec.tv/">LibreELEC</a>) and an
 602 Infocus IN76 video projector.  My projector can be controlled via both
 603 a infrared remote controller, and a RS-232 serial line.  The vendor of
 604 my projector, <a href="https://www.infocus.com/">InFocus</a>, had been
 605 sensible enough to document the serial protocol in its user manual, so
 606 it is easily available, and I used it some years ago to write
 607 <a href="https://github.com/petterreinholdtsen/infocus-projector-control">a
 608 small script to control the projector</a>.  For a while now, I longed
 609 for a setup where the projector was controlled by Kodi, for example in
 610 such a way that when the screen saver went on, the projector was
 611 turned off, and when the screen saver exited, the projector was turned
 612 on again.</p>
 613
 614 <p>A few days ago, with very good help from parts of my family, I
 615 managed to find a Kodi Add-on for controlling a Epson projector, and
 616 got in touch with its author to see if we could join forces and make a
 617 Add-on with support for several projectors.  To my pleasure, he was
 618 positive to the idea, and we set out to add InFocus support to his
 619 add-on, and make the add-on suitable for the official Kodi add-on
 620 repository.</p>
 621
 622 <p>The Add-on is now working (for me, at least), with a few minor
 623 adjustments.  The most important change I do relative to the master
 624 branch in the github repository is embedding the
 625 <a href="https://github.com/pyserial/pyserial">pyserial module</a> in
 626 the add-on.  The long term solution is to make a "script" type
 627 pyserial module for Kodi, that can be pulled in as a dependency in
 628 Kodi.  But until that in place, I embed it.</p>
 629
 630 <p>The add-on can be configured to turn on the projector when Kodi
 631 starts, off when Kodi stops as well as turn the projector off when the
 632 screensaver start and on when the screesaver stops.  It can also be
 633 told to set the projector source when turning on the projector.
 634
 635 <p>If this sound interesting to you, check out
 636 <a href="https://github.com/fredrik-eriksson/kodi_projcontrol">the
 637 project github repository</a>.  Perhaps you can send patches to
 638 support your projector too?  As soon as we find time to wrap up the
 639 latest changes, it should be available for easy installation using any
 640 Kodi instance.</p>
 641
 642 <p>For future improvements, I would like to add projector model
 643 detection and the ability to adjust the brightness level of the
 644 projector from within Kodi.  We also need to figure out how to handle
 645 the cooling period of the projector.  My projector refuses to turn on
 646 for 60 seconds after it was turned off.  This is not handled well by
 647 the add-on at the moment.</p>
 648
 649 <p>As usual, if you use Bitcoin and want to show your support of my
 650 activities, please send Bitcoin donations to my address
 651 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 652 </div>
 653       <div class="tags">
 654
 655
 656         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>.
 657
 658
 659       </div>
 660     </div>
 661     <div class="padding"></div>
 662
 663     <div class="entry">
 664       <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>
 665       <div class="date">28th April 2018</div>
 666       <div class="body"><p>I <a href="https://no.wikipedia.org/wiki/VHS">VHS-kassettenes</a>
 667 tid var det rett frem å ta vare på et TV-program en ønsket å kunne se
 668 senere, uten å være avhengig av at programmet ble sendt på nytt.
 669 Kanskje ønsket en å se programmet på hytten der det ikke var
 670 TV-signal, eller av andre grunner ha det tilgjengelig for fremtidig
 671 fornøyelse.  Dette er blitt vanskeligere med introduksjon av
 672 digital-TV og webstreaming, der opptak til harddisk er utenfor de
 673 flestes kontroll hvis de bruker ufri programvare og bokser kontrollert
 674 av andre.  Men for NRK her i Norge, finnes det heldigvis flere fri
 675 programvare-alternativer, som jeg har
 676 <a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK.html">skrevet</a>
 677 <a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK_med_den__nye__l_sningen.html">om</a>
 678 <a href="http://people.skolelinux.org/pere/blog/Nedlasting_fra_NRK__som_Matroska_med_undertekster.html">før</a>.
 679 Så lenge kilden for nedlastingen er lovlig lagt ut på nett (hvilket
 680 jeg antar NRK gjør), så er slik lagring til privat bruk også lovlig i
 681 Norge.</p>
 682
 683 <p>Sist jeg så på saken, i 2016, nevnte jeg at
 684 <a href="https://rg3.github.com/youtube-dl/">youtube-dl</a> ikke kunne
 685 bake undertekster fra NRK inn i videofilene, og at jeg derfor
 686 foretrakk andre alternativer.  Nylig oppdaget jeg at dette har endret
 687 seg.  Fordelen med youtube-dl er at den er tilgjengelig direkte fra
 688 Linux-distribusjoner som <a href="https://www.debian.org/">Debian</a>
 689 og <a href="https://www.ubuntu.com/">Ubuntu</a>, slik at en slipper å
 690 finne ut selv hvordan en skal få dem til å virke.</p>
 691
 692 <p>For å laste ned et NRK-innslag med undertekster, og få den norske
 693 underteksten pakket inn i videofilen, så kan følgende kommando
 694 brukes:</p>
 695
 696 <p><pre>
 697 youtube-dl --write-sub --sub-format ttml \
 698   --convert-subtitles srt --embed-subs \
 699   https://tv.nrk.no/serie/ramm-ferdig-gaa/MUHU11000316/27-04-2018
 700 </pre></p>
 701
 702 <p>URL-eksemplet er dagens toppsak på tv.nrk.no.  Resultatet er en
 703 MP4-fil med filmen og undertekster som kan spilles av med VLC.  Merk
 704 at VLC ikke viser frem undertekster før du aktiverer dem.  For å gjøre
 705 det, høyreklikk med musa i fremviservinduet, velg menyvalget for
 706 undertekst og så norsk språk.  Jeg testet også '--write-auto-sub',
 707 men det kommandolinjeargumentet ser ikke ut til å fungere, så jeg
 708 endte opp med settet med argumentlisten over, som jeg fant i en
 709 feilrapport i youtube-dl-prosjektets samling over feilrapporter.</p>
 710
 711 <p>Denne støtten i youtube-dl gjør det svært enkelt å lagre
 712 NRK-innslag, det være seg nyheter, filmer, serier eller dokumentater,
 713 for å ha dem tilgjengelig for fremtidig referanse og bruk, uavhengig
 714 av hvor lenge innslagene ligger tilgjengelig hos NRK.  Så får det ikke
 715 hjelpe at NRKs jurister mener at det er
 716 <a href="http://people.skolelinux.org/pere/blog/Best___ikke_fortelle_noen_at_streaming_er_nedlasting___.html">vesensforskjellig
 717 å legge tilgjengelig for nedlasting og for streaming</a>, når det rent
 718 teknisk er samme sak.</p>
 719
 720 <p>Programmet youtube-dl støtter også en rekke andre nettsteder, se
 721 prosjektoversikten for
 722 <a href="http://rg3.github.io/youtube-dl/supportedsites.html">en
 723 komplett liste</a>.</p>
 724 </div>
 725       <div class="tags">
 726
 727
 728         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>.
 729
 730
 731       </div>
 732     </div>
 733     <div class="padding"></div>
 734
 735     <div class="entry">
 736       <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>
 737       <div class="date">24th April 2018</div>
 738       <div class="body"><p><a href="https://www.vg.no/sport/i/J1g8zj/stortingsvedtak-snart-ip-blokkerer-utenlandske-spillselskaper">VG</a>,
 739 <a href="https://www.dagbladet.no/nyheter/stortinget-blokkerer-utenlandske-spillselskaper/69740219">Dagbladet</a>
 740 og
 741 <a href="https://www.nrk.no/ostfold/tar-opp-kampen-mot-utenlandske-spillselskap-1.14021381">NRK</a>
 742 melder i dag at flertallet i Familie- og kulturkomiteen på Stortinget
 743 har bestemt seg for å introdusere en ny sensurinfrastruktur i Norge.
 744 Fra før har Norge en «frivillig» sensurinfrastruktur basert på
 745 DNS-navn, der de største ISP-ene basert på en liste med DNS-navn
 746 forgifter DNS-svar og omdirigerer til et annet IP-nummer enn det som
 747 ligger i DNS.  Nå kommer altså IP-basert omdirigering i tillegg.  Når
 748 infrastrukturen er på plass, er sensur av IP-adresser redusert et
 749 spørsmål om hvilke IP-nummer som skal blokkeres.  Listen over
 750 IP-adresser vil naturligvis endre seg etter hvert som myndighetene
 751 endrer seg.  Det er ingen betryggende tanke.</p>
 752 </div>
 753       <div class="tags">
 754
 755
 756         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>.
 757
 758
 759       </div>
 760     </div>
 761     <div class="padding"></div>
 762
 763     <div class="entry">
 764       <div class="title"><a href="http://people.skolelinux.org/pere/blog/En_grunn_til___takke_nei_til_usikker_digital_post.html">En grunn til å takke nei til usikker digital post</a></div>
 765       <div class="date"> 2nd April 2018</div>
 766       <div class="body"><p>Brevpost er beskyttet av straffelovens bestemmelse som gjør det
 767 kriminelt å åpne andres brev.  Dette følger av (ny) straffelovs
 768 <a href="https://lovdata.no/dokument/NL/lov/2005-05-20-28/§205">§ 205
 769 (Krenkelse av retten til privat kommunikasjon)</a>, som sier at «Med
 770 bot eller fengsel inntil 2 år straffes den som uberettiget ...  c)
 771 åpner brev eller annen lukket skriftlig meddelelse som er adressert
 772 til en annen, eller på annen måte skaffer seg uberettiget tilgang til
 773 innholdet.» Dette gjelder såvel postbud som alle andre som har
 774 befatning med brevet etter at avsender har befatning med et lukket
 775 brev. Tilsvarende står også tidligere utgaver av den norske
 776 straffeloven.</p>
 777
 778 <p>Når en registrerer seg på usikre digitale postkasseløsningene, som
 779 f.eks. Digipost og e-Boks, og slik tar disse i bruk, så gir en de som
 780 står bak løsningene tillatelse til å åpne sine brev.  Dette er
 781 nødvendig for at innholdet i digital post skal kunne vises frem til
 782 mottaker via tjenestens websider.  Dermed gjelder ikke straffelovens
 783 paragraf om forbud mot å åpne brev, da tilgangen ikke lenger er
 784 uberettiget.  En gir altså fremmede tilgang til å lese sin
 785 korrespondanse.  I tillegg vil bruk av slike usikre digitale
 786 postbokser føre til at det blir registrert når du leser brevene, hvor
 787 du befinner deg (vha. tilkoblingens IP-adresse), hvilket utstyr du
 788 bruker og en rekke annen personlig informasjon som ikke er
 789 tilgjengelig når papirpost brukes.  Jeg foretrekker at det er
 790 lovmessig beskyttelse av min korrespondanse, som jo inneholder privat
 791 og personlig informasjon.  Det bidrar til litt bedre vern av personlig
 792 integritet i dagens norske samfunn.</p>
 793 </div>
 794       <div class="tags">
 795
 796
 797         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
 798
 799
 800       </div>
 801     </div>
 802     <div class="padding"></div>
 803
 804     <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>
 805     <div id="sidebar">
 806
 807
 808
 809 <h2>Archive</h2>
 810 <ul>
 811
 812 <li>2018
 813 <ul>
 814
 815 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 816
 817 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 818
 819 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 820
 821 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 822
 823 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 824
 825 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 826
 827 </ul></li>
 828
 829 <li>2017
 830 <ul>
 831
 832 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 833
 834 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 835
 836 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 837
 838 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 839
 840 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 841
 842 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 843
 844 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 845
 846 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 847
 848 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 849
 850 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 851
 852 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 853
 854 </ul></li>
 855
 856 <li>2016
 857 <ul>
 858
 859 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 860
 861 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 862
 863 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 864
 865 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 866
 867 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 868
 869 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 870
 871 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 872
 873 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 874
 875 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 876
 877 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 878
 879 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 880
 881 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 882
 883 </ul></li>
 884
 885 <li>2015
 886 <ul>
 887
 888 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 889
 890 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 891
 892 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 893
 894 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 895
 896 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 897
 898 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 899
 900 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 901
 902 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 903
 904 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 905
 906 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 907
 908 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 909
 910 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 911
 912 </ul></li>
 913
 914 <li>2014
 915 <ul>
 916
 917 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 918
 919 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 920
 921 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 922
 923 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 924
 925 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 926
 927 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 928
 929 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 930
 931 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 932
 933 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 934
 935 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 936
 937 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 938
 939 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 940
 941 </ul></li>
 942
 943 <li>2013
 944 <ul>
 945
 946 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 947
 948 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 949
 950 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 951
 952 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 953
 954 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 955
 956 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 957
 958 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 959
 960 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 961
 962 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 963
 964 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 965
 966 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 967
 968 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 969
 970 </ul></li>
 971
 972 <li>2012
 973 <ul>
 974
 975 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 976
 977 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 978
 979 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 980
 981 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 982
 983 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 984
 985 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 986
 987 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 988
 989 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 990
 991 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 992
 993 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 994
 995 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 996
 997 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 998
 999 </ul></li>
1000
1001 <li>2011
1002 <ul>
1003
1004 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
1005
1006 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
1007
1008 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
1009
1010 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
1011
1012 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
1013
1014 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
1015
1016 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
1017
1018 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
1019
1020 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
1021
1022 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
1023
1024 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
1025
1026 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
1027
1028 </ul></li>
1029
1030 <li>2010
1031 <ul>
1032
1033 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1034
1035 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1036
1037 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1038
1039 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1040
1041 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1042
1043 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1044
1045 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1046
1047 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1048
1049 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1050
1051 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1052
1053 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1054
1055 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1056
1057 </ul></li>
1058
1059 <li>2009
1060 <ul>
1061
1062 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1063
1064 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1065
1066 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1067
1068 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1069
1070 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1071
1072 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1073
1074 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1075
1076 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1077
1078 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1079
1080 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1081
1082 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1083
1084 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1085
1086 </ul></li>
1087
1088 <li>2008
1089 <ul>
1090
1091 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1092
1093 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1094
1095 </ul></li>
1096
1097 </ul>
1098
1099
1100
1101 <h2>Tags</h2>
1102 <ul>
1103
1104  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
1105
1106  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1107
1108  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1109
1110  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1111
1112  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (9)</a></li>
1113
1114  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
1115
1116  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1117
1118  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1119
1120  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (161)</a></li>
1121
1122  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
1123
1124  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
1125
1126  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1127
1128  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
1129
1130  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (25)</a></li>
1131
1132  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1133
1134  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (379)</a></li>
1135
1136  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1137
1138  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (13)</a></li>
1139
1140  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (32)</a></li>
1141
1142  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1143
1144  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1145
1146  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1147
1148  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1149
1150  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
1151
1152  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
1153
1154  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1155
1156  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
1157
1158  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1159
1160  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1161
1162  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1163
1164  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1165
1166  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
1167
1168  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (10)</a></li>
1169
1170  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
1171
1172  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (190)</a></li>
1173
1174  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
1175
1176  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1177
1178  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (71)</a></li>
1179
1180  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
1181
1182  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1183
1184  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1185
1186  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1187
1188  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1189
1190  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
1191
1192  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1193
1194  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
1195
1196  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1197
1198  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (54)</a></li>
1199
1200  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1201
1202  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1203
1204  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
1205
1206  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
1207
1208  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
1209
1210  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
1211
1212  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
1213
1214  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1215
1216  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1217
1218  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (11)</a></li>
1219
1220  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (66)</a></li>
1221
1222  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1223
1224  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
1225
1226 </ul>
1227
1228
1229     </div>
1230     <p style="text-align: right">
1231  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1232 </p>
1233
1234   </body>
1235 </html>