blog/index.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   2           "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
   3 <html xmlns="http://www.w3.org/1999/xhtml" dir="ltr">
   4   <head>
   5     <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
   6     <title>Petter Reinholdtsen</title>
   7     <link rel="stylesheet" type="text/css" media="screen" href="http://people.skolelinux.org/pere/blog/style.css" />
   8     <link rel="stylesheet" type="text/css" media="screen" href="http://people.skolelinux.org/pere/blog/vim.css" />
   9     <link rel="alternate" title="RSS Feed" href="http://people.skolelinux.org/pere/blog/index.rss" type="application/rss+xml" />
  10   </head>
  11   <body>
  12     <div class="title">
  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/VLC_in_Debian_now_can_do_bittorrent_streaming.html">VLC in Debian now can do bittorrent streaming</a></div>
  24       <div class="date">24th September 2018</div>
  25       <div class="body"><p>Back in February, I got curious to see
  26 <a href="http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html">if
  27 VLC now supported Bittorrent streaming</a>.  It did not, despite the
  28 fact that the idea and code to handle such streaming had been floating
  29 around for years.  I did however find
  30 <a href="https://github.com/johang/vlc-bittorrent">a standalone plugin
  31 for VLC</a> to do it, and half a year later I decided to wrap up the
  32 plugin and get it into Debian.  I uploaded it to NEW a few days ago,
  33 and am very happy to report that it
  34 <a href="https://tracker.debian.org/pkg/vlc-plugin-bittorrent">entered
  35 Debian</a> a few hours ago, and should be available in Debian/Unstable
  36 tomorrow, and Debian/Testing in a few days.</p>
  37
  38 <p>With the vlc-plugin-bittorrent package installed you should be able
  39 to stream videos using a simple call to</p>
  40
  41 <p><blockquote><pre>
  42 vlc https://archive.org/download/TheGoat/TheGoat_archive.torrent
  43 </pre></blockquote></p>
  44
  45 </p>It can handle magnet links too.  Now if only native vlc had
  46 bittorrent support.  Then a lot more would be helping each other to
  47 share public domain and creative commons movies.  The plugin need some
  48 stability work with seeking and picking the right file in a torrent
  49 with many files, but is already usable.  Please note that the plugin
  50 is not removing downloaded files when vlc is stopped, so it can fill
  51 up your disk if you are not careful.  Have fun. :)</p>
  52
  53 <p>I would love to get help maintaining this package.  Get in touch if
  54 you are interested.</p>
  55
  56 <p>As usual, if you use Bitcoin and want to show your support of my
  57 activities, please send Bitcoin donations to my address
  58 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  59 </div>
  60       <div class="tags">
  61
  62
  63         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
  64
  65
  66       </div>
  67     </div>
  68     <div class="padding"></div>
  69
  70     <div class="entry">
  71       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Using_the_Kodi_API_to_play_Youtube_videos.html">Using the Kodi API to play Youtube videos</a></div>
  72       <div class="date"> 2nd September 2018</div>
  73       <div class="body"><p>I continue to explore my Kodi installation, and today I wanted to
  74 tell it to play a youtube URL I received in a chat, without having to
  75 insert search terms using the on-screen keyboard.  After searching the
  76 web for API access to the Youtube plugin and testing a bit, I managed
  77 to find a recipe that worked.  If you got a kodi instance with its API
  78 available from http://kodihost/jsonrpc, you can try the following to
  79 have check out a nice cover band.</p>
  80
  81 <p><blockquote><pre>curl --silent --header 'Content-Type: application/json' \
  82   --data-binary '{ "id": 1, "jsonrpc": "2.0", "method": "Player.Open",
  83   "params": {"item": { "file":
  84   "plugin://plugin.video.youtube/play/?video_id=LuRGVM9O0qg" } } }' \
  85   http://projector.local/jsonrpc</pre></blockquote></p>
  86
  87 <p>I've extended kodi-stream program to take a video source as its
  88 first argument.  It can now handle direct video links, youtube links
  89 and 'desktop' to stream my desktop to Kodi.  It is almost like a
  90 Chromecast. :)</p>
  91
  92 <p>As usual, if you use Bitcoin and want to show your support of my
  93 activities, please send Bitcoin donations to my address
  94 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  95 </div>
  96       <div class="tags">
  97
  98
  99         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/kodi">kodi</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 100
 101
 102       </div>
 103     </div>
 104     <div class="padding"></div>
 105
 106     <div class="entry">
 107       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html">Software created using taxpayers’ money should be Free Software</a></div>
 108       <div class="date">30th August 2018</div>
 109       <div class="body"><p>It might seem obvious that software created using tax money should
 110 be available for everyone to use and improve.  Free Software
 111 Foundation Europe recentlystarted a campaign to help get more people
 112 to understand this, and I just signed the petition on
 113 <a href="https://publiccode.eu/">Public Money, Public Code</a> to help
 114 them. I hope you too will do the same.</p>
 115 </div>
 116       <div class="tags">
 117
 118
 119         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>.
 120
 121
 122       </div>
 123     </div>
 124     <div class="padding"></div>
 125
 126     <div class="entry">
 127       <div class="title"><a href="http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html">A bit more on privacy respecting health monitor / fitness tracker</a></div>
 128       <div class="date">13th August 2018</div>
 129       <div class="body"><p>A few days ago, I wondered if there are any privacy respecting
 130 health monitors and/or fitness trackers available for sale these days.
 131 I would like to buy one, but do not want to share my personal data
 132 with strangers, nor be forced to have a mobile phone to get data out
 133 of the unit.  I've received some ideas, and would like to share them
 134 with you.
 135
 136 One interesting data point was a pointer to a Free Software app for
 137 Android named
 138 <a href="https://github.com/Freeyourgadget/Gadgetbridge/">Gadgetbridge</a>.
 139 It provide cloudless collection and storing of data from a variety of
 140 trackers.  Its
 141 <a href="https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices">list
 142 of supported devices</a> is a good indicator for units where the
 143 protocol is fairly open, as it is obviously being handled by Free
 144 Software.  Other units are reportedly encrypting the collected
 145 information with their own public key, making sure only the vendor
 146 cloud service is able to extract data from the unit.  The people
 147 contacting me about Gadgetbirde said they were using
 148 <a href="https://us.amazfit.com/shop/bip?variant=336750">Amazfit
 149 Bip</a> and
 150 <a href="http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/">Xiaomi
 151 Band 3</a>.</p>
 152
 153 <p>I also got a suggestion to look at some of the units from Garmin.
 154 I was told their GPS watches can be connected via USB and show up as a
 155 USB storage device with
 156 <a href="https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html">Garmin
 157 FIT files</a> containing the collected measurements.  While
 158 proprietary, FIT files apparently can be read at least by
 159 <a href="https://www.gpsbabel.org">GPSBabel</a> and the
 160 <a href="https://apps.nextcloud.com/apps/gpxpod">GpxPod</a> Nextcloud
 161 app.  It is unclear to me if they can read step count and heart rate
 162 data.  The person I talked to was using a
 163 <a href="https://buy.garmin.com/en-US/US/p/564291">Garmin Forerunner
 164 935</a>, which is a fairly expensive unit.  I doubt it is worth it for
 165 a unit where the vendor clearly is trying its best to move from open
 166 to closed systems.  I still remember when Garmin dropped NMEA support
 167 in its GPSes.</p>
 168
 169 <p>A final idea was to build ones own unit, perhaps by basing it on a
 170 wearable hardware platforms like
 171 <a href="https://learn.adafruit.com/flora-geo-watch">the Flora Geo
 172 Watch</a>.  Sound like fun, but I had more money than time to spend on
 173 the topic, so I suspect it will have to wait for another time.</p>
 174
 175 <p>While I was working on tracking down links, I came across an
 176 inspiring TED talk by Dave Debronkart about
 177 <a href="https://archive.org/details/DavedeBronkart_2010X">being a
 178 e-patient</a>, and discovered the web site
 179 <a href="https://participatorymedicine.org/epatients/">Participatory
 180 Medicine</a>.  If you too want to track your own health and fitness
 181 without having information about your private life floating around on
 182 computers owned by others, I recommend checking it out.</p>
 183
 184 <p>As usual, if you use Bitcoin and want to show your support of my
 185 activities, please send Bitcoin donations to my address
 186 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 187 </div>
 188       <div class="tags">
 189
 190
 191         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 192
 193
 194       </div>
 195     </div>
 196     <div class="padding"></div>
 197
 198     <div class="entry">
 199       <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>
 200       <div class="date"> 7th August 2018</div>
 201       <div class="body"><p>Dear lazyweb,</p>
 202
 203 <p>I wonder, is there a fitness tracker / health monitor available for
 204 sale today that respect the users privacy?  With this I mean a
 205 watch/bracelet capable of measuring pulse rate and other
 206 fitness/health related values (and by all means, also the correct time
 207 and location if possible), which is <strong>only</strong> provided for
 208 me to extract/read from the unit with computer without a radio beacon
 209 and Internet connection.  In other words, it do not depend on a cell
 210 phone app, and do make the measurements available via other peoples
 211 computer (aka "the cloud").  The collected data should be available
 212 using only free software.  I'm not interested in depending on some
 213 non-free software that will leave me high and dry some time in the
 214 future.  I've been unable to find any such unit.  I would like to buy
 215 it.  The ones I have seen for sale here in Norway are proud to report
 216 that they share my health data with strangers (aka "cloud enabled").
 217 Is there an alternative?  I'm not interested in giving money to people
 218 requiring me to accept "privacy terms" to allow myself to measure my
 219 own health.</p>
 220
 221 <p>As usual, if you use Bitcoin and want to show your support of my
 222 activities, please send Bitcoin donations to my address
 223 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 224 </div>
 225       <div class="tags">
 226
 227
 228         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
 229
 230
 231       </div>
 232     </div>
 233     <div class="padding"></div>
 234
 235     <div class="entry">
 236       <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>
 237       <div class="date">31st July 2018</div>
 238       <div class="body"><p>For a while now, I have looked for a sensible way to share images
 239 with my family using a self hosted solution, as it is unacceptable to
 240 place images from my personal life under the control of strangers
 241 working for data hoarders like Google or Dropbox.  The last few days I
 242 have drafted an approach that might work out, and I would like to
 243 share it with you.  I would like to publish images on a server under
 244 my control, and point some Internet connected display units using some
 245 free and open standard to the images I published.  As my primary
 246 language is not limited to ASCII, I need to store metadata using
 247 UTF-8.  Many years ago, I hoped to find a digital photo frame capable
 248 of reading a RSS feed with image references (aka using the
 249 &lt;enclosure&gt; RSS tag), but was unable to find a current supplier
 250 of such frames.  In the end I gave up that approach.</p>
 251
 252 <p>Some months ago, I discovered that
 253 <a href="https://www.jwz.org/xscreensaver/">XScreensaver</a> is able to
 254 read images from a RSS feed, and used it to set up a screen saver on
 255 my home info screen, showing images from the Daily images feed from
 256 NASA.  This proved to work well.  More recently I discovered that
 257 <a href="https://kodi.tv">Kodi</a> (both using
 258 <a href="https://www.openelec.tv/">OpenELEC</a> and
 259 <a href="https://libreelec.tv">LibreELEC</a>) provide the
 260 <a href="https://github.com/grinsted/script.screensaver.feedreader">Feedreader</a>
 261 screen saver capable of reading a RSS feed with images and news.  For
 262 fun, I used it this summer to test Kodi on my parents TV by hooking up
 263 a Raspberry PI unit with LibreELEC, and wanted to provide them with a
 264 screen saver showing selected pictures from my selection.</p>
 265
 266 <p>Armed with motivation and a test photo frame, I set out to generate
 267 a RSS feed for the Kodi instance.  I adjusted my <a
 268 href="https://freedombox.org/">Freedombox</a> instance, created
 269 /var/www/html/privatepictures/, wrote a small Perl script to extract
 270 title and description metadata from the photo files and generate the
 271 RSS file.  I ended up using Perl instead of python, as the
 272 libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
 273 tags I ended up using, while python3-exif did not.  The relevant EXIF
 274 tags only support ASCII, so I had to find better alternatives.  XMP
 275 seem to have the support I need.</p>
 276
 277 <p>I am a bit unsure which EXIF/XMP tags to use, as I would like to
 278 use tags that can be easily added/updated using normal free software
 279 photo managing software.  I ended up using the tags set using this
 280 exiftool command, as these tags can also be set using digiKam:</p>
 281
 282 <blockquote><pre>
 283 exiftool -headline='The RSS image title' \
 284   -description='The RSS image description.' \
 285   -subject+=for-family photo.jpeg
 286 </pre></blockquote>
 287
 288 <p>I initially tried the "-title" and "keyword" tags, but they were
 289 invisible in digiKam, so I changed to "-headline" and "-subject".  I
 290 use the keyword/subject 'for-family' to flag that the photo should be
 291 shared with my family.  Images with this keyword set are located and
 292 copied into my Freedombox for the RSS generating script to find.</p>
 293
 294 <p>Are there better ways to do this?  Get in touch if you have better
 295 suggestions.</p>
 296
 297 <p>As usual, if you use Bitcoin and want to show your support of my
 298 activities, please send Bitcoin donations to my address
 299 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 300 </div>
 301       <div class="tags">
 302
 303
 304         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>.
 305
 306
 307       </div>
 308     </div>
 309     <div class="padding"></div>
 310
 311     <div class="entry">
 312       <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>
 313       <div class="date">12th July 2018</div>
 314       <div class="body"><p>Last night, I wrote
 315 <a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">a
 316 recipe to stream a Linux desktop using VLC to a instance of Kodi</a>.
 317 During the day I received valuable feedback, and thanks to the
 318 suggestions I have been able to rewrite the recipe into a much simpler
 319 approach requiring no setup at all.  It is a single script that take
 320 care of it all.</p>
 321
 322 <p>This new script uses GStreamer instead of VLC to capture the
 323 desktop and stream it to Kodi.  This fixed the video quality issue I
 324 saw initially.  It further removes the need to add a m3u file on the
 325 Kodi machine, as it instead connects to
 326 <a href="https://kodi.wiki/view/JSON-RPC_API/v8">the JSON-RPC API in
 327 Kodi</a> and simply ask Kodi to play from the stream created using
 328 GStreamer.  Streaming the desktop to Kodi now become trivial.  Copy
 329 the script below, run it with the DNS name or IP address of the kodi
 330 server to stream to as the only argument, and watch your screen show
 331 up on the Kodi screen.  Note, it depend on multicast on the local
 332 network, so if you need to stream outside the local network, the
 333 script must be modified.  Also note, I have no idea if audio work, as
 334 I only care about the picture part.</p>
 335
 336 <blockquote><pre>
 337 #!/bin/sh
 338 #
 339 # Stream the Linux desktop view to Kodi.  See
 340 # http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
 341 # for backgorund information.
 342
 343 # Make sure the stream is stopped in Kodi and the gstreamer process is
 344 # killed if something go wrong (for example if curl is unable to find the
 345 # kodi server).  Do the same when interrupting this script.
 346 kodicmd() {
 347     host="$1"
 348     cmd="$2"
 349     params="$3"
 350     curl --silent --header 'Content-Type: application/json' \
 351          --data-binary "{ \"id\": 1, \"jsonrpc\": \"2.0\", \"method\": \"$cmd\", \"params\": $params }" \
 352          "http://$host/jsonrpc"
 353 }
 354 cleanup() {
 355     if [ -n "$kodihost" ] ; then
 356         # Stop the playing when we end
 357         playerid=$(kodicmd "$kodihost" Player.GetActivePlayers "{}" |
 358                             jq .result[].playerid)
 359         kodicmd "$kodihost" Player.Stop "{ \"playerid\" : $playerid }" > /dev/null
 360     fi
 361     if [ "$gstpid" ] && kill -0 "$gstpid" >/dev/null 2>&1; then
 362         kill "$gstpid"
 363     fi
 364 }
 365 trap cleanup EXIT INT
 366
 367 if [ -n "$1" ]; then
 368     kodihost=$1
 369     shift
 370 else
 371     kodihost=kodi.local
 372 fi
 373
 374 mcast=239.255.0.1
 375 mcastport=1234
 376 mcastttl=1
 377
 378 pasrc=$(pactl list | grep -A2 'Source #' | grep 'Name: .*\.monitor$' | \
 379   cut -d" " -f2|head -1)
 380 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 381   videoconvert ! queue2 ! \
 382   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 383   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 384   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 385   udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
 386   pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
 387   > /dev/null 2>&1 &
 388 gstpid=$!
 389
 390 # Give stream a second to get going
 391 sleep 1
 392
 393 # Ask kodi to start streaming using its JSON-RPC API
 394 kodicmd "$kodihost" Player.Open \
 395         "{\"item\": { \"file\": \"udp://@$mcast:$mcastport\" } }" > /dev/null
 396
 397 # wait for gst to end
 398 wait "$gstpid"
 399 </pre></blockquote>
 400
 401 <p>I hope you find the approach useful.  I know I do.</p>
 402
 403 <p>As usual, if you use Bitcoin and want to show your support of my
 404 activities, please send Bitcoin donations to my address
 405 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 406 </div>
 407       <div class="tags">
 408
 409
 410         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/kodi">kodi</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 411
 412
 413       </div>
 414     </div>
 415     <div class="padding"></div>
 416
 417     <div class="entry">
 418       <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>
 419       <div class="date">12th July 2018</div>
 420       <div class="body"><p>PS: See
 421 <ahref="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">the
 422 followup post</a> for a even better approach.</p>
 423
 424 <p>A while back, I was asked by a friend how to stream the desktop to
 425 my projector connected to Kodi.  I sadly had to admit that I had no
 426 idea, as it was a task I never had tried.  Since then, I have been
 427 looking for a way to do so, preferable without much extra software to
 428 install on either side.  Today I found a way that seem to kind of
 429 work.  Not great, but it is a start.</p>
 430
 431 <p>I had a look at several approaches, for example
 432 <a href="https://github.com/mfoetsch/dlna_live_streaming">using uPnP
 433 DLNA as described in 2011</a>, but it required a uPnP server, fuse and
 434 local storage enough to store the stream locally.  This is not going
 435 to work well for me, lacking enough free space, and it would
 436 impossible for my friend to get working.</p>
 437
 438 <p>Next, it occurred to me that perhaps I could use VLC to create a
 439 video stream that Kodi could play.  Preferably using
 440 broadcast/multicast, to avoid having to change any setup on the Kodi
 441 side when starting such stream.  Unfortunately, the only recipe I
 442 could find using multicast used the rtp protocol, and this protocol
 443 seem to not be supported by Kodi.</p>
 444
 445 <p>On the other hand, the rtsp protocol is working!  Unfortunately I
 446 have to specify the IP address of the streaming machine in both the
 447 sending command and the file on the Kodi server.  But it is showing my
 448 desktop, and thus allow us to have a shared look on the big screen at
 449 the programs I work on.</p>
 450
 451 <p>I did not spend much time investigating codeces.  I combined the
 452 rtp and rtsp recipes from
 453 <a href="https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/">the
 454 VLC Streaming HowTo/Command Line Examples</a>, and was able to get
 455 this working on the desktop/streaming end.</p>
 456
 457 <blockquote><pre>
 458 vlc screen:// --sout \
 459   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}'
 460 </pre></blockquote>
 461
 462 <p>I ssh-ed into my Kodi box and created a file like this with the
 463 same IP address:</p>
 464
 465 <blockquote><pre>
 466 echo rtsp://192.168.11.4:8080/test.sdp \
 467   > /storage/videos/screenstream.m3u
 468 </pre></blockquote>
 469
 470 <p>Note the 192.168.11.4 IP address is my desktops IP address.  As far
 471 as I can tell the IP must be hardcoded for this to work.  In other
 472 words, if someone elses machine is going to do the steaming, you have
 473 to update screenstream.m3u on the Kodi machine and adjust the vlc
 474 recipe.  To get started, locate the file in Kodi and select the m3u
 475 file while the VLC stream is running.  The desktop then show up in my
 476 big screen. :)</p>
 477
 478 <p>When using the same technique to stream a video file with audio,
 479 the audio quality is really bad.  No idea if the problem is package
 480 loss or bad parameters for the transcode.  I do not know VLC nor Kodi
 481 enough to tell.</p>
 482
 483 <p><strong>Update 2018-07-12</strong>: Johannes Schauer send me a few
 484 succestions and reminded me about an important step.  The "screen:"
 485 input source is only available once the vlc-plugin-access-extra
 486 package is installed on Debian.  Without it, you will see this error
 487 message: "VLC is unable to open the MRL 'screen://'.  Check the log
 488 for details."  He further found that it is possible to drop some parts
 489 of the VLC command line to reduce the amount of hardcoded information.
 490 It is also useful to consider using cvlc to avoid having the VLC
 491 window in the desktop view.  In sum, this give us this command line on
 492 the source end
 493
 494 <blockquote><pre>
 495 cvlc screen:// --sout \
 496   '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}'
 497 </pre></blockquote>
 498
 499 <p>and this on the Kodi end<p>
 500
 501 <blockquote><pre>
 502 echo rtsp://192.168.11.4:8080/ \
 503   > /storage/videos/screenstream.m3u
 504 </pre></blockquote>
 505
 506 <p>Still bad image quality, though.  But I did discover that streaming
 507 a DVD using dvdsimple:///dev/dvd as the source had excellent video and
 508 audio quality, so I guess the issue is in the input or transcoding
 509 parts, not the rtsp part.  I've tried to change the vb and ab
 510 parameters to use more bandwidth, but it did not make a
 511 difference.</p>
 512
 513 <p>I further received a suggestion from Einar Haraldseid to try using
 514 gstreamer instead of VLC, and this proved to work great!  He also
 515 provided me with the trick to get Kodi to use a multicast stream as
 516 its source.  By using this monstrous oneliner, I can stream my desktop
 517 with good video quality in reasonable framerate to the 239.255.0.1
 518 multicast address on port 1234:
 519
 520 <blockquote><pre>
 521 gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
 522   videoconvert ! queue2 ! \
 523   x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
 524   key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
 525   mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
 526   udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
 527   pulsesrc device=$(pactl list | grep -A2 'Source #' | \
 528     grep 'Name: .*\.monitor$' |  cut -d" " -f2|head -1) ! \
 529   audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
 530 </pre></blockquote>
 531
 532 <p>and this on the Kodi end<p>
 533
 534 <blockquote><pre>
 535 echo udp://@239.255.0.1:1234 \
 536   > /storage/videos/screenstream.m3u
 537 </pre></blockquote>
 538
 539 <p>Note the trick to pick a valid pulseaudio source.  It might not
 540 pick the one you need.  This approach will of course lead to trouble
 541 if more than one source uses the same multicast port and address.
 542 Note the ttl-mc=1 setting, which limit the multicast packages to the
 543 local network.  If the value is increased, your screen will be
 544 broadcasted further, one network "hop" for each increase (read up on
 545 multicast to learn more. :)!</p>
 546
 547 <p>Having cracked how to get Kodi to receive multicast streams, I
 548 could use this VLC command to stream to the same multicast address.
 549 The image quality is way better than the rtsp approach, but gstreamer
 550 seem to be doing a better job.</p>
 551
 552 <blockquote><pre>
 553 cvlc screen:// --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}'
 554 </pre></blockquote>
 555
 556 <p>As usual, if you use Bitcoin and want to show your support of my
 557 activities, please send Bitcoin donations to my address
 558 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 559 </div>
 560       <div class="tags">
 561
 562
 563         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/kodi">kodi</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 564
 565
 566       </div>
 567     </div>
 568     <div class="padding"></div>
 569
 570     <div class="entry">
 571       <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>
 572       <div class="date"> 9th July 2018</div>
 573       <div class="body"><p>Five years ago,
 574 <a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html">I
 575 measured what the most supported MIME type in Debian was</a>, by
 576 analysing the desktop files in all packages in the archive.  Since
 577 then, the DEP-11 AppStream system has been put into production, making
 578 the task a lot easier.  This made me want to repeat the measurement,
 579 to see how much things changed.  Here are the new numbers, for
 580 unstable only this time:
 581
 582 <p><strong>Debian Unstable:</strong></p>
 583
 584 <pre>
 585   count MIME type
 586   ----- -----------------------
 587      56 image/jpeg
 588      55 image/png
 589      49 image/tiff
 590      48 image/gif
 591      39 image/bmp
 592      38 text/plain
 593      37 audio/mpeg
 594      34 application/ogg
 595      33 audio/x-flac
 596      32 audio/x-mp3
 597      30 audio/x-wav
 598      30 audio/x-vorbis+ogg
 599      29 image/x-portable-pixmap
 600      27 inode/directory
 601      27 image/x-portable-bitmap
 602      27 audio/x-mpeg
 603      26 application/x-ogg
 604      25 audio/x-mpegurl
 605      25 audio/ogg
 606      24 text/html
 607 </pre>
 608
 609 <p>The list was created like this using a sid chroot: "cat
 610 /var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk '/^
 611 - \S+\/\S+$/ {print $2 }' | sort | uniq -c | sort -nr | head -20"</p>
 612
 613 <p>It is interesting to see how image formats have passed text/plain
 614 as the most announced supported MIME type.  These days, thanks to the
 615 AppStream system, if you run into a file format you do not know, and
 616 want to figure out which packages support the format, you can find the
 617 MIME type of the file using "file --mime &lt;filename&gt;", and then
 618 look up all packages announcing support for this format in their
 619 AppStream metadata (XML or .desktop file) using "appstreamcli
 620 what-provides mimetype &lt;mime-type&gt;.  For example if you, like
 621 me, want to know which packages support inode/directory, you can get a
 622 list like this:</p>
 623
 624 <p><blockquote><pre>
 625 % appstreamcli what-provides mimetype inode/directory | grep Package: | sort
 626 Package: anjuta
 627 Package: audacious
 628 Package: baobab
 629 Package: cervisia
 630 Package: chirp
 631 Package: dolphin
 632 Package: doublecmd-common
 633 Package: easytag
 634 Package: enlightenment
 635 Package: ephoto
 636 Package: filelight
 637 Package: gwenview
 638 Package: k4dirstat
 639 Package: kaffeine
 640 Package: kdesvn
 641 Package: kid3
 642 Package: kid3-qt
 643 Package: nautilus
 644 Package: nemo
 645 Package: pcmanfm
 646 Package: pcmanfm-qt
 647 Package: qweborf
 648 Package: ranger
 649 Package: sirikali
 650 Package: spacefm
 651 Package: spacefm
 652 Package: vifm
 653 %
 654 </pre></blockquote></p>
 655
 656 <p>Using the same method, I can quickly discover that the Sketchup file
 657 format is not yet supported by any package in Debian:</p>
 658
 659 <p><blockquote><pre>
 660 % appstreamcli what-provides mimetype  application/vnd.sketchup.skp
 661 Could not find component providing 'mimetype::application/vnd.sketchup.skp'.
 662 %
 663 </pre></blockquote></p>
 664
 665 <p>Yesterday I used it to figure out which packages support the STL 3D
 666 format:</p>
 667
 668 <p><blockquote><pre>
 669 % appstreamcli what-provides mimetype  application/sla|grep Package
 670 Package: cura
 671 Package: meshlab
 672 Package: printrun
 673 %
 674 </pre></blockquote></p>
 675
 676 <p>PS: A new version of Cura was uploaded to Debian yesterday.</p>
 677
 678 <p>As usual, if you use Bitcoin and want to show your support of my
 679 activities, please send Bitcoin donations to my address
 680 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 681 </div>
 682       <div class="tags">
 683
 684
 685         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>.
 686
 687
 688       </div>
 689     </div>
 690     <div class="padding"></div>
 691
 692     <div class="entry">
 693       <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>
 694       <div class="date"> 8th July 2018</div>
 695       <div class="body"><p>Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
 696 for a while, and when I need to update it there is not enough free
 697 space on the disk for apt to do a normal 'apt upgrade'.  I normally
 698 would resolve the issue by doing 'apt install &lt;somepackages&gt;' to
 699 upgrade only some of the packages in one batch, until the amount of
 700 packages to download fall below the amount of free space available.
 701 Today, I had about 500 packages to upgrade, and after a while I got
 702 tired of trying to install chunks of packages manually.  I concluded
 703 that I did not have the spare hours required to complete the task, and
 704 decided to see if I could automate it.  I came up with this small
 705 script which I call 'apt-in-chunks':</p>
 706
 707 <p><blockquote><pre>
 708 #!/bin/sh
 709 #
 710 # Upgrade packages when the disk is too full to upgrade every
 711 # upgradable package in one lump.  Fetching packages to upgrade using
 712 # apt, and then installing using dpkg, to avoid changing the package
 713 # flag for manual/automatic.
 714
 715 set -e
 716
 717 ignore() {
 718     if [ "$1" ]; then
 719         grep -v "$1"
 720     else
 721         cat
 722     fi
 723 }
 724
 725 for p in $(apt list --upgradable | ignore "$@" |cut -d/ -f1 | grep -v '^Listing...'); do
 726     echo "Upgrading $p"
 727     apt clean
 728     apt install --download-only -y $p
 729     for f in /var/cache/apt/archives/*.deb; do
 730         if [ -e "$f" ]; then
 731             dpkg -i /var/cache/apt/archives/*.deb
 732             break
 733         fi
 734     done
 735 done
 736 </pre></blockquote></p>
 737
 738 <p>The script will extract the list of packages to upgrade, try to
 739 download the packages needed to upgrade one package, install the
 740 downloaded packages using dpkg.  The idea is to upgrade packages
 741 without changing the APT mark for the package (ie the one recording of
 742 the package was manually requested or pulled in as a dependency).  To
 743 use it, simply run it as root from the command line.  If it fail, try
 744 'apt install -f' to clean up the mess and run the script again.  This
 745 might happen if the new packages conflict with one of the old
 746 packages.  dpkg is unable to remove, while apt can do this.</p>
 747
 748 <p>It take one option, a package to ignore in the list of packages to
 749 upgrade.  The option to ignore a package is there to be able to skip
 750 the packages that are simply too large to unpack.  Today this was
 751 'ghc', but I have run into other large packages causing similar
 752 problems earlier (like TeX).</p>
 753
 754 <p>Update 2018-07-08: Thanks to Paul Wise, I am aware of two
 755 alternative ways to handle this.  The "unattended-upgrades
 756 --minimal-upgrade-steps" option will try to calculate upgrade sets for
 757 each package to upgrade, and then upgrade them in order, smallest set
 758 first.  It might be a better option than my above mentioned script.
 759 Also, "aptutude upgrade" can upgrade single packages, thus avoiding
 760 the need for using "dpkg -i" in the script above.</p>
 761
 762 <p>As usual, if you use Bitcoin and want to show your support of my
 763 activities, please send Bitcoin donations to my address
 764 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 765 </div>
 766       <div class="tags">
 767
 768
 769         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>.
 770
 771
 772       </div>
 773     </div>
 774     <div class="padding"></div>
 775
 776     <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>
 777     <div id="sidebar">
 778
 779
 780
 781 <h2>Archive</h2>
 782 <ul>
 783
 784 <li>2018
 785 <ul>
 786
 787 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 788
 789 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 790
 791 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 792
 793 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 794
 795 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 796
 797 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 798
 799 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 800
 801 <li><a href="http://people.skolelinux.org/pere/blog/archive/2018/09/">September (2)</a></li>
 802
 803 </ul></li>
 804
 805 <li>2017
 806 <ul>
 807
 808 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 809
 810 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 811
 812 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 813
 814 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 815
 816 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 817
 818 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 819
 820 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 821
 822 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 823
 824 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 825
 826 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 827
 828 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 829
 830 </ul></li>
 831
 832 <li>2016
 833 <ul>
 834
 835 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 836
 837 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 838
 839 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 840
 841 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 842
 843 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 844
 845 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 846
 847 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 848
 849 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 850
 851 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 852
 853 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 854
 855 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 856
 857 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 858
 859 </ul></li>
 860
 861 <li>2015
 862 <ul>
 863
 864 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 865
 866 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 867
 868 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 869
 870 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 871
 872 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 873
 874 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 875
 876 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 877
 878 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 879
 880 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 881
 882 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 883
 884 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 885
 886 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 887
 888 </ul></li>
 889
 890 <li>2014
 891 <ul>
 892
 893 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 894
 895 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 896
 897 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 898
 899 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 900
 901 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 902
 903 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 904
 905 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 906
 907 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 908
 909 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 910
 911 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 912
 913 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 914
 915 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 916
 917 </ul></li>
 918
 919 <li>2013
 920 <ul>
 921
 922 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 923
 924 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 925
 926 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 927
 928 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 929
 930 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 931
 932 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 933
 934 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 935
 936 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 937
 938 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 939
 940 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 941
 942 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 943
 944 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 945
 946 </ul></li>
 947
 948 <li>2012
 949 <ul>
 950
 951 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 952
 953 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 954
 955 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 956
 957 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 958
 959 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 960
 961 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 962
 963 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 964
 965 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 966
 967 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 968
 969 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 970
 971 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 972
 973 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 974
 975 </ul></li>
 976
 977 <li>2011
 978 <ul>
 979
 980 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 981
 982 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 983
 984 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 985
 986 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 987
 988 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 989
 990 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 991
 992 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 993
 994 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 995
 996 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 997
 998 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 999
1000 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
1001
1002 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
1003
1004 </ul></li>
1005
1006 <li>2010
1007 <ul>
1008
1009 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
1010
1011 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
1012
1013 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
1014
1015 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
1016
1017 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
1018
1019 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
1020
1021 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
1022
1023 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
1024
1025 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
1026
1027 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
1028
1029 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
1030
1031 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
1032
1033 </ul></li>
1034
1035 <li>2009
1036 <ul>
1037
1038 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
1039
1040 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
1041
1042 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1043
1044 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1045
1046 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1047
1048 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1049
1050 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1051
1052 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1053
1054 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1055
1056 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1057
1058 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1059
1060 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1061
1062 </ul></li>
1063
1064 <li>2008
1065 <ul>
1066
1067 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1068
1069 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1070
1071 </ul></li>
1072
1073 </ul>
1074
1075
1076
1077 <h2>Tags</h2>
1078 <ul>
1079
1080  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
1081
1082  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1083
1084  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1085
1086  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1087
1088  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (9)</a></li>
1089
1090  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
1091
1092  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1093
1094  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1095
1096  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (162)</a></li>
1097
1098  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
1099
1100  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
1101
1102  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1103
1104  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
1105
1106  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (25)</a></li>
1107
1108  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1109
1110  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (384)</a></li>
1111
1112  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1113
1114  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (13)</a></li>
1115
1116  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (32)</a></li>
1117
1118  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1119
1120  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
1121
1122  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1123
1124  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1125
1126  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
1127
1128  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (20)</a></li>
1129
1130  <li><a href="http://people.skolelinux.org/pere/blog/tags/kodi">kodi (3)</a></li>
1131
1132  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1133
1134  <li><a href="http://people.skolelinux.org/pere/blog/tags/lego">lego (4)</a></li>
1135
1136  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1137
1138  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1139
1140  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1141
1142  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1143
1144  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
1145
1146  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (10)</a></li>
1147
1148  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
1149
1150  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (190)</a></li>
1151
1152  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
1153
1154  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1155
1156  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (72)</a></li>
1157
1158  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
1159
1160  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1161
1162  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1163
1164  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1165
1166  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1167
1168  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
1169
1170  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1171
1172  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
1173
1174  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1175
1176  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (54)</a></li>
1177
1178  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1179
1180  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1181
1182  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
1183
1184  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
1185
1186  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
1187
1188  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
1189
1190  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
1191
1192  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1193
1194  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1195
1196  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (12)</a></li>
1197
1198  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (68)</a></li>
1199
1200  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1201
1202  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
1203
1204 </ul>
1205
1206
1207     </div>
1208     <p style="text-align: right">
1209  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1210 </p>
1211
1212   </body>
1213 </html>