Link to the followup.

[homepage.git] / blog / index.rss

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-               <title>Self-appointed leaders of the Free World</title>
-               <link>http://people.skolelinux.org/pere/blog/Self_appointed_leaders_of_the_Free_World.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Self_appointed_leaders_of_the_Free_World.html</guid>
-                <pubDate>Thu, 22 Mar 2018 11:00:00 +0100</pubDate>
-               <description>&lt;p&gt;The leaders of the worlds have started to congratulate the
-re-elected Russian head of state, and this causes some criticism.  I
-am though a little fascinated by a comment from USA senator John McCain,
-&lt;a href=&quot;http://thehill.com/homenews/senate/379339-mccain-rips-trumps-congratulatory-call-to-putin-as-insult-to-russian-people&quot;&gt;sited
-by The Hill and others&lt;/a&gt;:
-
-&lt;p&gt;&lt;blockquote&gt;
-&lt;p&gt;&quot;An American president does not lead the Free World by
-congratulating dictators on winning sham elections.&quot;&lt;/p&gt;
-&lt;/blockquote&gt;&lt;/p&gt;
-
-&lt;p&gt;While I totally agree with the senator here, the way the quote is
-phrased make me suspect that he is unaware of the simple fact that USA
-have not lead the Free World since at least before its government
-&lt;a href=&quot;https://en.wikipedia.org/wiki/Maher_Arar&quot;&gt;kidnapped a
-completely innocent Canadian citizen in transit on his way home to
-Canada via John F. Kennedy International Airport in September 2002 and
-sent him to be tortured in Syria for a year&lt;/a&gt;.&lt;/p&gt;
-
-&lt;p&gt;USA might be running ahead, but the path they are taking is not the
-one taken by any Free World.&lt;/p&gt;
-</description>
-       </item>
-       
-       <item>
-               <title>Facebooks ability to sell your personal information is the real Cambridge Analytica scandal</title>
-               <link>http://people.skolelinux.org/pere/blog/Facebooks_ability_to_sell_your_personal_information_is_the_real_Cambridge_Analytica_scandal.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Facebooks_ability_to_sell_your_personal_information_is_the_real_Cambridge_Analytica_scandal.html</guid>
-                <pubDate>Wed, 21 Mar 2018 16:30:00 +0100</pubDate>
-               <description>&lt;p&gt;So, Cambridge Analytica is getting some well deserved criticism for
-(mis)using information it got from Facebook about 50 million people,
-mostly in the USA.  What I find a bit surprising, is how little
-criticism Facebook is getting for handing the information over to
-Cambridge Analytica and others in the first place.  And what about the
-people handing their private and personal information to Facebook?
-And last, but not least, what about the government offices who are
-handing information about the visitors of their web pages to Facebook?
-No-one who looked at the terms of use of Facebook should be surprised
-that information about peoples interests, political views, personal
-lifes and whereabouts would be sold by Facebook.&lt;/p&gt;
-
-&lt;p&gt;What I find to be the real scandal is the fact that Facebook is
-selling your personal information, not that one of the buyers used it
-in a way Facebook did not approve when exposed.  It is well known that
-Facebook is selling out their users privacy, but a scandal
-nevertheless.  Of course the information provided to them by Facebook
-would be misused by one of the parties given access to personal
-information about the millions of Facebook users.  Collected
-information will be misused sooner or later.  The only way to avoid
-such misuse, is to not collect the information in the first place.  If
-you do not want Facebook to hand out information about yourself for
-the use and misuse of its customers, do not give Facebook the
-information.&lt;/p&gt;
-
-&lt;p&gt;Personally, I would recommend to completely remove your Facebook
-account, and take back some control of your personal information.
-&lt;a href=&quot;https://www.theguardian.com/technology/2018/mar/19/how-to-protect-your-facebook-privacy-or-delete-yourself-completely&quot;&gt;According
-to The Guardian&lt;/a&gt;, it is a bit hard to find out how to request
-account removal (and not just &#39;disabling&#39;).  You need to
-&lt;a href=&quot;https://www.facebook.com/help/224562897555674?helpref=faq_content&quot;&gt;visit
-a specific Facebook page&lt;/a&gt; and click on &#39;let us know&#39; on that page
-to get to &lt;a href=&quot;https://www.facebook.com/help/delete_account&quot;&gt;the
-real account deletion screen&lt;/a&gt;.  Perhaps something to consider?  I
-would not trust the information to really be deleted (who knows,
-perhaps NSA, GCHQ and FRA already got a copy), but it might reduce the
-exposure a bit.&lt;/p&gt;
-
-&lt;p&gt;If you want to learn more about the capabilities of Cambridge
-Analytica, I recommend to see the video recording of the one hour talk
-Paul-Olivier Dehaye gave to &lt;a href=&quot;&quot;&gt;NUUG&lt;/a&gt; last april about
-&lt;a href=&quot;https://www.nuug.no/aktiviteter/20170404-big-data-psychometric/&quot;&gt;
-Data collection, psychometric profiling and their impact on
-politics&lt;/a&gt;.&lt;/p&gt;
-
-&lt;p&gt;And if you want to communicate with your friends and loved ones,
-use some end-to-end encrypted method like
-&lt;a href=&quot;https://www.signal.org/&quot;&gt;Signal&lt;/a&gt; or
-&lt;a href=&quot;https://ring.cx/&quot;&gt;Ring&lt;/a&gt;, and stop sharing your private
-messages with strangers like Facebook and Google.&lt;/p&gt;
-</description>
-       </item>
-       
-       <item>
-               <title>H, Ap, Frp og Venstre går for DNA-innsamling av hele befolkningen</title>
-               <link>http://people.skolelinux.org/pere/blog/H__Ap__Frp_og_Venstre_g_r_for_DNA_innsamling_av_hele_befolkningen.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/H__Ap__Frp_og_Venstre_g_r_for_DNA_innsamling_av_hele_befolkningen.html</guid>
-                <pubDate>Wed, 14 Mar 2018 14:15:00 +0100</pubDate>
-               <description>&lt;p&gt;I går kom det nok et argument for å holde seg unna det norske
-helsevesenet.  Da annonserte et stortingsflertall, bestående av Høyre,
-Arbeiderpartiet, Fremskrittspartiet og Venstre, at de går inn for å
-samle inn og lagre DNA-prøver fra hele befolkningen i Norge til evig
-tid.  Endringen gjelder innsamlede blodprøver fra nyfødte i Norge.
-Det vil dermed ta litt tid før en har hele befolkningen, men det er
-dit vi havner gitt nok tid.  I dag er det nesten hundre prosent
-oppslutning om undersøkelsen som gjøres like etter fødselen, på
-bakgrunn av blodprøven det er snakk om å lagre, for å oppdage endel
-medfødte sykdommer.  Blodprøven lagres i dag i inntil seks år.
-&lt;a href=&quot;https://www.stortinget.no/no/Saker-og-publikasjoner/Publikasjoner/Innstillinger/Stortinget/2017-2018/inns-201718-182l/?all=true&quot;&gt;Stortingets
-flertallsinnstilling&lt;/a&gt; er at tidsbegrensingen skal fjernes, og mener
-at tidsubegrenset lagring ikke vil påvirke oppslutningen om
-undersøkelsen.&lt;/p&gt;
-
-&lt;p&gt;Datatilsynet har ikke akkurat applaudert forslaget:&lt;/p&gt;
-
-&lt;p&gt;&lt;blockquote&gt;
-
-  &lt;p&gt;«Datatilsynet mener forslaget ikke i tilstrekkelig grad
-  synliggjør hvilke etiske og personvernmessige utfordringer som må
-  diskuteres før en etablerer en nasjonal biobank med blodprøver fra
-  hele befolkningen.»&lt;/p&gt;
-  
-&lt;/blockquote&gt;&lt;/p&gt;
-
-&lt;p&gt;Det er flere historier om hvordan innsamlet biologisk materiale har
-blitt brukt til andre formål enn de ble innsamlet til, og historien om
-&lt;a href=&quot;https://www.aftenposten.no/norge/i/Ql0WR/Na-ma-Folkehelsa-slette-uskyldiges-DNA-info&quot;&gt;folkehelseinstituttets
-lagring på vegne av politiet (Kripos) av innsamlet biologisk materiale
-og DNA-informasjon i strid med loven&lt;/a&gt; viser at en ikke kan være
-trygg på at lover og intensjoner beskytter de som blir berørt mot
-misbruk av slik privat og personlig informasjon.&lt;/p&gt;
-
-&lt;p&gt;Det er verdt å merke seg at det kan forskes på de innsamlede
-blodprøvene uten samtykke fra den det gjelder (eller foreldre når det
-gjelder barn), etter en lovendring for en stund tilbake, med mindre
-det er sendt inn skjema der en reserverer seg mot forskning uten
-samtykke.  Skjemaet er tilgjengelig fra
-&lt;a href=&quot;https://www.fhi.no/arkiv/publikasjoner/for-pasienter-skjema-for-reservasjo/&quot;&gt;folkehelseinstituttets
-websider&lt;/a&gt;, og jeg anbefaler, uavhengig av denne saken, varmt alle å
-sende inn skjemaet for å dokumentere hvor mange som ikke synes det er
-greit å fjerne krav om samtykke.&lt;/p&gt;
-
-&lt;p&gt;I tillegg bør en kreve destruering av alt biologisk materiale som
-er samlet inn om en selv, for å redusere eventuelle negative
-konsekvenser i fremtiden når materialet kommer på avveie eller blir
-brukt uten samtykke, men det er så vidt jeg vet ikke noe system for
-dette i dag.&lt;/p&gt;
-
-&lt;p&gt;Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til
-det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner
-til min adresse
-&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
-</description>
-       </item>
-       
-       <item>
-               <title>First rough draft Norwegian and Spanish edition of the book Made with Creative Commons</title>
-               <link>http://people.skolelinux.org/pere/blog/First_rough_draft_Norwegian_and_Spanish_edition_of_the_book_Made_with_Creative_Commons.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/First_rough_draft_Norwegian_and_Spanish_edition_of_the_book_Made_with_Creative_Commons.html</guid>
-                <pubDate>Tue, 13 Mar 2018 13:00:00 +0100</pubDate>
-               <description>&lt;p&gt;I am working on publishing yet another book related to Creative
-Commons.  This time it is a book filled with interviews and histories
-from those around the globe making a living using Creative
-Commons.&lt;/p&gt;
-
-&lt;p&gt;Yesterday, after many months of hard work by several volunteer
-translators, the first draft of a Norwegian Bokmål edition of the book
-&lt;a href=&quot;https://madewith.cc&quot;&gt;Made with Creative Commons from 2017&lt;/a&gt;
-was complete.  The Spanish translation is also complete, while the
-Dutch, Polish, German and Ukraine edition need a lot of work.  Get in
-touch if you want to help make those happen, or would like to
-translate into your mother tongue.&lt;/p&gt;
-
-&lt;p&gt;The whole book project started when
-&lt;a href=&quot;http://gwolf.org/node/4102&quot;&gt;Gunnar Wolf announced&lt;/a&gt; that he
-was going to make a Spanish edition of the book.  I noticed, and
-offered some input on how to make a book, based on my experience with
-translating the
-&lt;a href=&quot;https://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html&quot;&gt;Free
-Culture&lt;/a&gt; and
-&lt;a href=&quot;https://debian-handbook.info/get/#norwegian&quot;&gt;The Debian
-Administrator&#39;s Handbook&lt;/a&gt; books to Norwegian Bokmål.  To make a
-long story short, we ended up working on a Bokmål edition, and now the
-first rough translation is complete, thanks to the hard work of
-Ole-Erik Yrvin, Ingrid Yrvin, Allan Nordhøy and myself.  The first
-proof reading is almost done, and only the second and third proof
-reading remains.  We will also need to translate the 14 figures and
-create a book cover.  Once it is done we will publish the book on
-paper, as well as in PDF, ePub and possibly Mobi formats.&lt;/p&gt;
-
-&lt;p&gt;The book itself originates as a manuscript on Google Docs, is
-downloaded as ODT from there and converted to Markdown using pandoc.
-The Markdown is modified by a script before is converted to DocBook
-using pandoc.  The DocBook is modified again using a script before it
-is used to create a Gettext POT file for translators.  The translated
-PO file is then combined with the earlier mentioned DocBook file to
-create a translated DocBook file, which finally is given to dblatex to
-create the final PDF.  The end result is a set of editions of the
-manuscript, one English and one for each of the translations.&lt;/p&gt;
-
-&lt;p&gt;The translation is conducted using
-&lt;a href=&quot;https://hosted.weblate.org/projects/madewithcc/translation/&quot;&gt;the
-Weblate web based translation system&lt;/a&gt;.  Please have a look there
-and get in touch if you would like to help out with proof
-reading. :)&lt;/p&gt;
+               <title>Simple streaming the Linux desktop to Kodi using GStreamer and RTP</title>
+               <link>http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html</guid>
+                <pubDate>Thu, 12 Jul 2018 17:55:00 +0200</pubDate>
+               <description>&lt;p&gt;Last night, I wrote
+&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html&quot;&gt;a
+recipe to stream a Linux desktop using VLC to a instance of Kodi&lt;/a&gt;.
+During the day I received valuable feedback, and thanks to the
+suggestions I have been able to rewrite the recipe into a much simpler
+approach requiring no setup at all.  It is a single script that take
+care of it all.&lt;/p&gt;
+
+&lt;p&gt;This new script uses GStreamer instead of VLC to capture the
+desktop and stream it to Kodi.  This fixed the video quality issue I
+saw initially.  It further removes the need to add a m3u file on the
+Kodi machine, as it instead connects to
+&lt;a href=&quot;https://kodi.wiki/view/JSON-RPC_API/v8&quot;&gt;the JSON-RPC API in
+Kodi&lt;/a&gt; and simply ask Kodi to play from the stream created using
+GStreamer.  Streaming the desktop to Kodi now become trivial.  Copy
+the script below, run it with the DNS name or IP address of the kodi
+server to stream to as the only argument, and watch your screen show
+up on the Kodi screen.  Note, it depend on multicast on the local
+network, so if you need to stream outside the local network, the
+script must be modified.  Also note, I have no idea if audio work, as
+I only care about the picture part.&lt;/p&gt;
+
+&lt;blockquote&gt;&lt;pre&gt;
+#!/bin/sh
+#
+# Stream the Linux desktop view to Kodi.  See
+# http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
+# for backgorund information.
+
+# Make sure the stream is stopped in Kodi and the gstreamer process is
+# killed if something go wrong (for example if curl is unable to find the
+# kodi server).  Do the same when interrupting this script.
+kodicmd() {
+    host=&quot;$1&quot;
+    cmd=&quot;$2&quot;
+    params=&quot;$3&quot;
+    curl --silent --header &#39;Content-Type: application/json&#39; \
+        --data-binary &quot;{ \&quot;id\&quot;: 1, \&quot;jsonrpc\&quot;: \&quot;2.0\&quot;, \&quot;method\&quot;: \&quot;$cmd\&quot;, \&quot;params\&quot;: $params }&quot; \
+        &quot;http://$host/jsonrpc&quot;
+}
+cleanup() {
+    if [ -n &quot;$kodihost&quot; ] ; then
+       # Stop the playing when we end
+       playerid=$(kodicmd &quot;$kodihost&quot; Player.GetActivePlayers &quot;{}&quot; |
+                           jq .result[].playerid)
+       kodicmd &quot;$kodihost&quot; Player.Stop &quot;{ \&quot;playerid\&quot; : $playerid }&quot; &gt; /dev/null
+    fi
+    if [ &quot;$gstpid&quot; ] &amp;&amp; kill -0 &quot;$gstpid&quot; &gt;/dev/null 2&gt;&amp;1; then
+       kill &quot;$gstpid&quot;
+    fi
+}
+trap cleanup EXIT INT
+
+if [ -n &quot;$1&quot; ]; then
+    kodihost=$1
+    shift
+else
+    kodihost=kodi.local
+fi
+
+mcast=239.255.0.1
+mcastport=1234
+mcastttl=1
+
+pasrc=$(pactl list | grep -A2 &#39;Source #&#39; | grep &#39;Name: .*\.monitor$&#39; | \
+  cut -d&quot; &quot; -f2|head -1)
+gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
+  videoconvert ! queue2 ! \
+  x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
+  key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
+  mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
+  udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
+  pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
+  &gt; /dev/null 2&gt;&amp;1 &amp;
+gstpid=$!
+
+# Give stream a second to get going
+sleep 1
+
+# Ask kodi to start streaming using its JSON-RPC API
+kodicmd &quot;$kodihost&quot; Player.Open \
+       &quot;{\&quot;item\&quot;: { \&quot;file\&quot;: \&quot;udp://@$mcast:$mcastport\&quot; } }&quot; &gt; /dev/null
+
+# wait for gst to end
+wait &quot;$gstpid&quot;
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;I hope you find the approach useful.  I know I do.&lt;/p&gt;

 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address
 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address


@@ -213,47 +107,141 @@ activities, please send Bitcoin donations to my address
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-               <title>Debian used in the subway info screens in Oslo, Norway</title>
-               <link>http://people.skolelinux.org/pere/blog/Debian_used_in_the_subway_info_screens_in_Oslo__Norway.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_used_in_the_subway_info_screens_in_Oslo__Norway.html</guid>
-                <pubDate>Fri, 2 Mar 2018 13:10:00 +0100</pubDate>
-               <description>&lt;p&gt;Today I was pleasantly surprised to discover my operating system of
-choice, Debian, was used in the info screens on the subway stations.
-While passing Nydalen subway station in Oslo, Norway, I discovered the
-info screen booting with some text scrolling.  I was not quick enough
-with my camera to be able to record a video of the scrolling boot
-screen, but I did get a photo from when the boot got stuck with a
-corrupt file system:
-
-&lt;p align=&quot;center&quot;&gt;&lt;a href=&quot;http://people.skolelinux.org/pere/blog/images/2018-03-02-ruter-debian-lenny.jpeg&quot;&gt;&lt;img align=&quot;center&quot; width=&quot;40%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2018-03-02-ruter-debian-lenny.jpeg&quot; alt=&quot;[photo of subway info screen]&quot;&gt;&lt;/a&gt;&lt;/p&gt;
-
-&lt;p&gt;While I am happy to see Debian used more places, some details of the
-content on the screen worries me.&lt;/p&gt;
-
-&lt;p&gt;The image show the version booting is &#39;Debian GNU/Linux lenny/sid&#39;,
-indicating that this is based on code taken from Debian Unstable/Sid
-after Debian Etch (version 4) was released 2007-04-08 and before
-Debian Lenny (version 5) was released 2009-02-14.  Since Lenny Debian
-has released version 6 (Squeeze) 2011-02-06, 7 (Wheezy) 2013-05-04, 8
-(Jessie) 2015-04-25 and 9 (Stretch) 2017-06-15, according to
-&lt;a href=&quot;https://en.wikipedia.org/wiki/Debian_version_history&quot;&gt;a Debian
-version history on Wikpedia&lt;/a&gt;.  This mean the system is running
-around 10 year old code, with no security fixes from the vendor for
-many years.&lt;/p&gt;
-
-&lt;p&gt;This is not the first time I discover the Oslo subway company,
-Ruter, running outdated software.  In 2012,
-&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Er_billettautomatene_til_kollektivtrafikken_i_Oslo_uten_sikkerhetsoppdateringer_.html&quot;&gt;I
-discovered the ticket vending machines were running Windows 2000&lt;/a&gt;,
-and this was
-&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Fortsatt_ingen_sikkerhetsoppdateringer_for_billettautomatene_til_kollektivtrafikken_i_Oslo_.html&quot;&gt;still
-the case in 2016&lt;/a&gt;.  Given the response from the responsible people
-in 2016, I would assume the machines are still running unpatched
-Windows 2000.  Thus, an unpatched Debian setup come as no surprise.&lt;/p&gt;
-
-&lt;p&gt;The photo is made available under the license terms
-&lt;a href=&quot;http://creativecommons.org/licenses/by/4.0/&quot;&gt;Creative Commons
-4.0 Attribution International (CC BY 4.0)&lt;/a&gt;.&lt;/p&gt;
+               <title>Streaming the Linux desktop to Kodi using VLC and RTSP</title>
+               <link>http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html</guid>
+                <pubDate>Thu, 12 Jul 2018 02:00:00 +0200</pubDate>
+               <description>&lt;p&gt;A while back, I was asked by a friend how to stream the desktop to
+my projector connected to Kodi.  I sadly had to admit that I had no
+idea, as it was a task I never had tried.  Since then, I have been
+looking for a way to do so, preferable without much extra software to
+install on either side.  Today I found a way that seem to kind of
+work.  Not great, but it is a start.&lt;/p&gt;
+
+&lt;p&gt;I had a look at several approaches, for example
+&lt;a href=&quot;https://github.com/mfoetsch/dlna_live_streaming&quot;&gt;using uPnP
+DLNA as described in 2011&lt;/a&gt;, but it required a uPnP server, fuse and
+local storage enough to store the stream locally.  This is not going
+to work well for me, lacking enough free space, and it would
+impossible for my friend to get working.&lt;/p&gt;
+
+&lt;p&gt;Next, it occurred to me that perhaps I could use VLC to create a
+video stream that Kodi could play.  Preferably using
+broadcast/multicast, to avoid having to change any setup on the Kodi
+side when starting such stream.  Unfortunately, the only recipe I
+could find using multicast used the rtp protocol, and this protocol
+seem to not be supported by Kodi.&lt;/p&gt;
+
+&lt;p&gt;On the other hand, the rtsp protocol is working!  Unfortunately I
+have to specify the IP address of the streaming machine in both the
+sending command and the file on the Kodi server.  But it is showing my
+desktop, and thus allow us to have a shared look on the big screen at
+the programs I work on.&lt;/p&gt;
+
+&lt;p&gt;I did not spend much time investigating codeces.  I combined the
+rtp and rtsp recipes from
+&lt;a href=&quot;https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/&quot;&gt;the
+VLC Streaming HowTo/Command Line Examples&lt;/a&gt;, and was able to get
+this working on the desktop/streaming end.&lt;/p&gt;
+
+&lt;blockquote&gt;&lt;pre&gt;
+vlc screen:// --sout \
+  &#39;#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}&#39;
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;I ssh-ed into my Kodi box and created a file like this with the
+same IP address:&lt;/p&gt;
+
+&lt;blockquote&gt;&lt;pre&gt;
+echo rtsp://192.168.11.4:8080/test.sdp \
+  &gt; /storage/videos/screenstream.m3u
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;Note the 192.168.11.4 IP address is my desktops IP address.  As far
+as I can tell the IP must be hardcoded for this to work.  In other
+words, if someone elses machine is going to do the steaming, you have
+to update screenstream.m3u on the Kodi machine and adjust the vlc
+recipe.  To get started, locate the file in Kodi and select the m3u
+file while the VLC stream is running.  The desktop then show up in my
+big screen. :)&lt;/p&gt;
+
+&lt;p&gt;When using the same technique to stream a video file with audio,
+the audio quality is really bad.  No idea if the problem is package
+loss or bad parameters for the transcode.  I do not know VLC nor Kodi
+enough to tell.&lt;/p&gt;
+
+&lt;p&gt;&lt;strong&gt;Update 2018-07-12&lt;/strong&gt;: Johannes Schauer send me a few
+succestions and reminded me about an important step.  The &quot;screen:&quot;
+input source is only available once the vlc-plugin-access-extra
+package is installed on Debian.  Without it, you will see this error
+message: &quot;VLC is unable to open the MRL &#39;screen://&#39;.  Check the log
+for details.&quot;  He further found that it is possible to drop some parts
+of the VLC command line to reduce the amount of hardcoded information.
+It is also useful to consider using cvlc to avoid having the VLC
+window in the desktop view.  In sum, this give us this command line on
+the source end
+
+&lt;blockquote&gt;&lt;pre&gt;
+cvlc screen:// --sout \
+  &#39;#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}&#39;
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;and this on the Kodi end&lt;p&gt;
+
+&lt;blockquote&gt;&lt;pre&gt;
+echo rtsp://192.168.11.4:8080/ \
+  &gt; /storage/videos/screenstream.m3u
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;Still bad image quality, though.  But I did discover that streaming
+a DVD using dvdsimple:///dev/dvd as the source had excellent video and
+audio quality, so I guess the issue is in the input or transcoding
+parts, not the rtsp part.  I&#39;ve tried to change the vb and ab
+parameters to use more bandwidth, but it did not make a
+difference.&lt;/p&gt;
+
+&lt;p&gt;I further received a suggestion from Einar Haraldseid to try using
+gstreamer instead of VLC, and this proved to work great!  He also
+provided me with the trick to get Kodi to use a multicast stream as
+its source.  By using this monstrous oneliner, I can stream my desktop
+with good video quality in reasonable framerate to the 239.255.0.1
+multicast address on port 1234:
+
+&lt;blockquote&gt;&lt;pre&gt;
+gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
+  videoconvert ! queue2 ! \
+  x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
+  key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
+  mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
+  udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
+  pulsesrc device=$(pactl list | grep -A2 &#39;Source #&#39; | \
+    grep &#39;Name: .*\.monitor$&#39; |  cut -d&quot; &quot; -f2|head -1) ! \
+  audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;and this on the Kodi end&lt;p&gt;
+
+&lt;blockquote&gt;&lt;pre&gt;
+echo udp://@239.255.0.1:1234 \
+  &gt; /storage/videos/screenstream.m3u
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;Note the trick to pick a valid pulseaudio source.  It might not
+pick the one you need.  This approach will of course lead to trouble
+if more than one source uses the same multicast port and address.
+Note the ttl-mc=1 setting, which limit the multicast packages to the
+local network.  If the value is increased, your screen will be
+broadcasted further, one network &quot;hop&quot; for each increase (read up on
+multicast to learn more. :)!&lt;/p&gt;
+
+&lt;p&gt;Having cracked how to get Kodi to receive multicast streams, I
+could use this VLC command to stream to the same multicast address.
+The image quality is way better than the rtsp approach, but gstreamer
+seem to be doing a better job.&lt;/p&gt;
+
+&lt;blockquote&gt;&lt;pre&gt;
+cvlc screen:// --sout &#39;#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}&#39;
+&lt;/pre&gt;&lt;/blockquote&gt;

 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address
 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address


@@ -262,32 +250,114 @@ activities, please send Bitcoin donations to my address
        </item>
        
        <item>
        </item>
        
        <item>

-               <title>The SysVinit upstream project just migrated to git</title>
-               <link>http://people.skolelinux.org/pere/blog/The_SysVinit_upstream_project_just_migrated_to_git.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_SysVinit_upstream_project_just_migrated_to_git.html</guid>
-                <pubDate>Sun, 18 Feb 2018 09:20:00 +0100</pubDate>
-               <description>&lt;p&gt;Surprising as it might sound, there are still computers using the
-traditional Sys V init system, and there probably will be until
-systemd start working on Hurd and FreeBSD.
-&lt;a href=&quot;https://savannah.nongnu.org/projects/sysvinit&quot;&gt;The upstream
-project still exist&lt;/a&gt;, though, and up until today, the upstream
-source was available from Savannah via subversion.  I am happy to
-report that this just changed.&lt;/p&gt;
+               <title>What is the most supported MIME type in Debian in 2018?</title>
+               <link>http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html</guid>
+                <pubDate>Mon, 9 Jul 2018 08:05:00 +0200</pubDate>
+               <description>&lt;p&gt;Five years ago,
+&lt;a href=&quot;http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html&quot;&gt;I
+measured what the most supported MIME type in Debian was&lt;/a&gt;, by
+analysing the desktop files in all packages in the archive.  Since
+then, the DEP-11 AppStream system has been put into production, making
+the task a lot easier.  This made me want to repeat the measurement,
+to see how much things changed.  Here are the new numbers, for
+unstable only this time:
+
+&lt;p&gt;&lt;strong&gt;Debian Unstable:&lt;/strong&gt;&lt;/p&gt;
+
+&lt;pre&gt;
+  count MIME type
+  ----- -----------------------
+     56 image/jpeg
+     55 image/png
+     49 image/tiff
+     48 image/gif
+     39 image/bmp
+     38 text/plain
+     37 audio/mpeg
+     34 application/ogg
+     33 audio/x-flac
+     32 audio/x-mp3
+     30 audio/x-wav
+     30 audio/x-vorbis+ogg
+     29 image/x-portable-pixmap
+     27 inode/directory
+     27 image/x-portable-bitmap
+     27 audio/x-mpeg
+     26 application/x-ogg
+     25 audio/x-mpegurl
+     25 audio/ogg
+     24 text/html
+&lt;/pre&gt;
+
+&lt;p&gt;The list was created like this using a sid chroot: &quot;cat
+/var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk &#39;/^
+- \S+\/\S+$/ {print $2 }&#39; | sort | uniq -c | sort -nr | head -20&quot;&lt;/p&gt;
+
+&lt;p&gt;It is interesting to see how image formats have passed text/plain
+as the most announced supported MIME type.  These days, thanks to the
+AppStream system, if you run into a file format you do not know, and
+want to figure out which packages support the format, you can find the
+MIME type of the file using &quot;file --mime &amp;lt;filename&amp;gt;&quot;, and then
+look up all packages announcing support for this format in their
+AppStream metadata (XML or .desktop file) using &quot;appstreamcli
+what-provides mimetype &amp;lt;mime-type&amp;gt;.  For example if you, like
+me, want to know which packages support inode/directory, you can get a
+list like this:&lt;/p&gt;
+
+&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
+% appstreamcli what-provides mimetype inode/directory | grep Package: | sort
+Package: anjuta
+Package: audacious
+Package: baobab
+Package: cervisia
+Package: chirp
+Package: dolphin
+Package: doublecmd-common
+Package: easytag
+Package: enlightenment
+Package: ephoto
+Package: filelight
+Package: gwenview
+Package: k4dirstat
+Package: kaffeine
+Package: kdesvn
+Package: kid3
+Package: kid3-qt
+Package: nautilus
+Package: nemo
+Package: pcmanfm
+Package: pcmanfm-qt
+Package: qweborf
+Package: ranger
+Package: sirikali
+Package: spacefm
+Package: spacefm
+Package: vifm
+%
+&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

 
 

-&lt;p&gt;The upstream source is now in Git, and consist of three
-repositories:&lt;/p&gt;
+&lt;p&gt;Using the same method, I can quickly discover that the Sketchup file
+format is not yet supported by any package in Debian:&lt;/p&gt;

 
 

-&lt;ul&gt;
+&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
+% appstreamcli what-provides mimetype  application/vnd.sketchup.skp
+Could not find component providing &#39;mimetype::application/vnd.sketchup.skp&#39;.
+%
+&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

 
 

-&lt;li&gt;&lt;a href=&quot;http://git.savannah.nongnu.org/cgit/sysvinit.git&quot;&gt;sysvinit&lt;/a&gt;&lt;/li&gt;
-&lt;li&gt;&lt;a href=&quot;http://git.savannah.nongnu.org/cgit/sysvinit/insserv.git&quot;&gt;insserv&lt;/a&gt;&lt;/li&gt;
-&lt;li&gt;&lt;a href=&quot;http://git.savannah.nongnu.org/cgit/sysvinit/startpar.git&quot;&gt;startpar&lt;/a&gt;&lt;/li&gt;
+&lt;p&gt;Yesterday I used it to figure out which packages support the STL 3D
+format:&lt;/p&gt;

 
 

-&lt;/ul&gt;
+&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
+% appstreamcli what-provides mimetype  application/sla|grep Package
+Package: cura
+Package: meshlab
+Package: printrun
+%
+&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;

 
 

-&lt;p&gt;I do not really spend much time on the project these days, and I
-has mostly retired, but found it best to migrate the source to a good
-version control system to help those willing to move it forward.&lt;/p&gt;
+&lt;p&gt;PS: A new version of Cura was uploaded to Debian yesterday.&lt;/p&gt;

 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address
 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address


@@ -296,72 +366,76 @@ activities, please send Bitcoin donations to my address
        </item>
        
        <item>
        </item>
        
        <item>

-               <title>Using VLC to stream bittorrent sources</title>
-               <link>http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_VLC_to_stream_bittorrent_sources.html</guid>
-                <pubDate>Wed, 14 Feb 2018 08:00:00 +0100</pubDate>
-               <description>&lt;p&gt;A few days ago, a new major version of
-&lt;a href=&quot;https://www.videolan.org/&quot;&gt;VLC&lt;/a&gt; was announced, and I
-decided to check out if it now supported streaming over
-&lt;a href=&quot;http://bittorrent.org/&quot;&gt;bittorrent&lt;/a&gt; and
-&lt;a href=&quot;https://webtorrent.io&quot;&gt;webtorrent&lt;/a&gt;.  Bittorrent is one of
-the most efficient ways to distribute large files on the Internet, and
-Webtorrent is a variant of Bittorrent using
-&lt;a href=&quot;https://webrtc.org&quot;&gt;WebRTC&lt;/a&gt; as its transport channel,
-allowing web pages to stream and share files using the same technique.
-The network protocols are similar but not identical, so a client
-supporting one of them can not talk to a client supporting the other.
-I was a bit surprised with what I discovered when I started to look.
-Looking at
-&lt;a href=&quot;https://www.videolan.org/vlc/releases/3.0.0.html&quot;&gt;the release
-notes&lt;/a&gt; did not help answering this question, so I started searching
-the web.  I found several news articles from 2013, most of them
-tracing the news from Torrentfreak
-(&quot;&lt;a href=https://torrentfreak.com/open-source-giant-vlc-mulls-bittorrent-support-130211/&quot;&gt;Open
-Source Giant VLC Mulls BitTorrent Streaming Support&lt;/a&gt;&quot;), about a
-initiative to pay someone to create a VLC patch for bittorrent
-support.  To figure out what happend with this initiative, I headed
-over to the #videolan IRC channel and asked if there were some bug or
-feature request tickets tracking such feature.  I got an answer from
-lead developer Jean-Babtiste Kempf, telling me that there was a patch
-but neither he nor anyone else knew where it was.  So I searched a bit
-more, and came across an independent
-&lt;a href=&quot;https://github.com/johang/vlc-bittorrent&quot;&gt;VLC plugin to add
-bittorrent support&lt;/a&gt;, created by Johan Gunnarsson in 2016/2017.
-Again according to Jean-Babtiste, this is not the patch he was talking
-about.&lt;/p&gt;
-
-&lt;p&gt;Anyway, to test the plugin, I made a working Debian package from
-the git repository, with some modifications.  After installing this
-package, I could stream videos from
-&lt;a href=&quot;https://www.archive.org/&quot;&gt;The Internet Archive&lt;/a&gt; using VLC
-commands like this:&lt;/p&gt;
+               <title>Debian APT upgrade without enough free space on the disk...</title>
+               <link>http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html</guid>
+                <pubDate>Sun, 8 Jul 2018 12:10:00 +0200</pubDate>
+               <description>&lt;p&gt;Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
+for a while, and when I need to update it there is not enough free
+space on the disk for apt to do a normal &#39;apt upgrade&#39;.  I normally
+would resolve the issue by doing &#39;apt install &amp;lt;somepackages&amp;gt;&#39; to
+upgrade only some of the packages in one batch, until the amount of
+packages to download fall below the amount of free space available.
+Today, I had about 500 packages to upgrade, and after a while I got
+tired of trying to install chunks of packages manually.  I concluded
+that I did not have the spare hours required to complete the task, and
+decided to see if I could automate it.  I came up with this small
+script which I call &#39;apt-in-chunks&#39;:&lt;/p&gt;

 
 &lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
 
 &lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;

-vlc https://archive.org/download/LoveNest/LoveNest_archive.torrent
+#!/bin/sh
+#
+# Upgrade packages when the disk is too full to upgrade every
+# upgradable package in one lump.  Fetching packages to upgrade using
+# apt, and then installing using dpkg, to avoid changing the package
+# flag for manual/automatic.
+
+set -e
+
+ignore() {
+    if [ &quot;$1&quot; ]; then
+       grep -v &quot;$1&quot;
+    else
+       cat
+    fi
+}
+
+for p in $(apt list --upgradable | ignore &quot;$@&quot; |cut -d/ -f1 | grep -v &#39;^Listing...&#39;); do
+    echo &quot;Upgrading $p&quot;
+    apt clean
+    apt install --download-only -y $p
+    for f in /var/cache/apt/archives/*.deb; do
+       if [ -e &quot;$f&quot; ]; then
+           dpkg -i /var/cache/apt/archives/*.deb
+           break
+       fi
+    done
+done

 &lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;
 
 &lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;
 

-&lt;p&gt;The plugin is supposed to handle magnet links too, but since The
-Internet Archive do not have magnet links and I did not want to spend
-time tracking down another source, I have not tested it.  It can take
-quite a while before the video start playing without any indication of
-what is going on from VLC.  It took 10-20 seconds when I measured it.
-Some times the plugin seem unable to find the correct video file to
-play, and show the metadata XML file name in the VLC status line.  I
-have no idea why.&lt;/p&gt;
-
-&lt;p&gt;I have created a &lt;a href=&quot;https://bugs.debian.org/890360&quot;&gt;request for
-a new package in Debian (RFP)&lt;/a&gt; and
-&lt;a href=&quot;https://github.com/johang/vlc-bittorrent/issues/1&quot;&gt;asked if
-the upstream author is willing to help make this happen&lt;/a&gt;.  Now we
-wait to see what come out of this.  I do not want to maintain a
-package that is not maintained upstream, nor do I really have time to
-maintain more packages myself, so I might leave it at this.  But I
-really hope someone step up to do the packaging, and hope upstream is
-still maintaining the source.  If you want to help, please update the
-RFP request or the upstream issue.&lt;/p&gt;
-
-&lt;p&gt;I have not found any traces of webtorrent support for VLC.&lt;/p&gt;
+&lt;p&gt;The script will extract the list of packages to upgrade, try to
+download the packages needed to upgrade one package, install the
+downloaded packages using dpkg.  The idea is to upgrade packages
+without changing the APT mark for the package (ie the one recording of
+the package was manually requested or pulled in as a dependency).  To
+use it, simply run it as root from the command line.  If it fail, try
+&#39;apt install -f&#39; to clean up the mess and run the script again.  This
+might happen if the new packages conflict with one of the old
+packages.  dpkg is unable to remove, while apt can do this.&lt;/p&gt;
+
+&lt;p&gt;It take one option, a package to ignore in the list of packages to
+upgrade.  The option to ignore a package is there to be able to skip
+the packages that are simply too large to unpack.  Today this was
+&#39;ghc&#39;, but I have run into other large packages causing similar
+problems earlier (like TeX).&lt;/p&gt;
+
+&lt;p&gt;Update 2018-07-08: Thanks to Paul Wise, I am aware of two
+alternative ways to handle this.  The &quot;unattended-upgrades
+--minimal-upgrade-steps&quot; option will try to calculate upgrade sets for
+each package to upgrade, and then upgrade them in order, smallest set
+first.  It might be a better option than my above mentioned script.
+Also, &quot;aptutude upgrade&quot; can upgrade single packages, thus avoiding
+the need for using &quot;dpkg -i&quot; in the script above.&lt;/p&gt;

 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address
 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address


@@ -370,25 +444,25 @@ activities, please send Bitcoin donations to my address
        </item>
        
        <item>
        </item>
        
        <item>

-               <title>Version 3.1 of Cura, the 3D print slicer, is now in Debian</title>
-               <link>http://people.skolelinux.org/pere/blog/Version_3_1_of_Cura__the_3D_print_slicer__is_now_in_Debian.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Version_3_1_of_Cura__the_3D_print_slicer__is_now_in_Debian.html</guid>
-                <pubDate>Tue, 13 Feb 2018 06:20:00 +0100</pubDate>
-               <description>&lt;p&gt;A new version of the
-&lt;a href=&quot;https://tracker.debian.org/pkg/cura&quot;&gt;3D printer slicer
-software Cura&lt;/a&gt;, version 3.1.0, is now available in Debian Testing
-(aka Buster) and Debian Unstable (aka Sid).  I hope you find it
-useful.  It was uploaded the last few days, and the last update will
-enter testing tomorrow.  See the
-&lt;a href=&quot;https://ultimaker.com/en/products/cura-software/release-notes&quot;&gt;release
-notes&lt;/a&gt; for the list of bug fixes and new features.  Version 3.2
-was announced 6 days ago.  We will try to get it into Debian as
-well.&lt;/p&gt;
-
-&lt;p&gt;More information related to 3D printing is available on the
-&lt;a href=&quot;https://wiki.debian.org/3DPrinting&quot;&gt;3D printing&lt;/a&gt; and
-&lt;a href=&quot;https://wiki.debian.org/3D-printer&quot;&gt;3D printer&lt;/a&gt; wiki pages
-in Debian.&lt;/p&gt;
+               <title>The worlds only stone power plant?</title>
+               <link>http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html</guid>
+                <pubDate>Sat, 30 Jun 2018 10:35:00 +0200</pubDate>
+               <description>&lt;p&gt;So far, at least hydro-electric power, coal power, wind power,
+solar power, and wood power are well known.  Until a few days ago, I
+had never heard of stone power.  Then I learn about a quarry in a
+mountain in
+&lt;a href=&quot;https://en.wikipedia.org/wiki/Bremanger&quot;&gt;Bremanger&lt;/a&gt; i
+Norway, where
+&lt;a href=&quot;https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/&quot;&gt;the
+Bremanger Quarry&lt;/a&gt; company is extracting stone and dumping the stone
+into a shaft leading to its shipping harbour.  This downward movement
+in this shaft is used to produce electricity.  In short, it is using
+falling rocks instead of falling water to produce electricity, and
+according to its own statements it is producing more power than it is
+using, and selling the surplus electricity to the Norwegian power
+grid.  I find the concept truly amazing.  Is this the worlds only
+stone power plant?&lt;/p&gt;

 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address
 
 &lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
 activities, please send Bitcoin donations to my address


@@ -397,139 +471,215 @@ activities, please send Bitcoin donations to my address
        </item>
        
        <item>
        </item>
        
        <item>

-               <title>Overvåkning i Kina vs. Norge</title>
-               <link>http://people.skolelinux.org/pere/blog/Overv_kning_i_Kina_vs__Norge.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Overv_kning_i_Kina_vs__Norge.html</guid>
-                <pubDate>Mon, 12 Feb 2018 09:40:00 +0100</pubDate>
-               <description>&lt;p&gt;Jeg lar meg fascinere av en artikkel
-&lt;a href=&quot;https://www.dagbladet.no/kultur/terroristene-star-pa-dora/69436116&quot;&gt;i
-Dagbladet om Kinas håndtering av Xinjiang&lt;/a&gt;, spesielt følgende
-utsnitt:&lt;/p&gt;
-
-&lt;p&gt;&lt;blockquote&gt;
-
-&lt;p&gt;«I den sørvestlige byen Kashgar nærmere grensa til
-Sentral-Asia meldes det nå at 120.000 uigurer er internert i såkalte
-omskoleringsleirer. Samtidig er det innført et omfattende
-helsesjekk-program med innsamling og lagring av DNA-prøver fra
-absolutt alle innbyggerne. De mest avanserte overvåkingsmetodene
-testes ut her. Programmer for å gjenkjenne ansikter og stemmer er på
-plass i regionen. Der har de lokale myndighetene begynt å installere
-GPS-systemer i alle kjøretøy og egne sporingsapper i
-mobiltelefoner.&lt;/p&gt;
-
-&lt;p&gt;Politimetodene griper så dypt inn i folks dagligliv at motstanden
-mot Beijing-regimet øker.»&lt;/p&gt;
+               <title>Add-on to control the projector from within Kodi</title>
+               <link>http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html</guid>
+                <pubDate>Tue, 26 Jun 2018 23:55:00 +0200</pubDate>
+               <description>&lt;p&gt;My movie playing setup involve &lt;a href=&quot;https://kodi.tv/&quot;&gt;Kodi&lt;/a&gt;,
+&lt;a href=&quot;https://openelec.tv&quot;&gt;OpenELEC&lt;/a&gt; (probably soon to be
+replaced with &lt;a href=&quot;https://libreelec.tv/&quot;&gt;LibreELEC&lt;/a&gt;) and an
+Infocus IN76 video projector.  My projector can be controlled via both
+a infrared remote controller, and a RS-232 serial line.  The vendor of
+my projector, &lt;a href=&quot;https://www.infocus.com/&quot;&gt;InFocus&lt;/a&gt;, had been
+sensible enough to document the serial protocol in its user manual, so
+it is easily available, and I used it some years ago to write
+&lt;a href=&quot;https://github.com/petterreinholdtsen/infocus-projector-control&quot;&gt;a
+small script to control the projector&lt;/a&gt;.  For a while now, I longed
+for a setup where the projector was controlled by Kodi, for example in
+such a way that when the screen saver went on, the projector was
+turned off, and when the screen saver exited, the projector was turned
+on again.&lt;/p&gt;
+
+&lt;p&gt;A few days ago, with very good help from parts of my family, I
+managed to find a Kodi Add-on for controlling a Epson projector, and
+got in touch with its author to see if we could join forces and make a
+Add-on with support for several projectors.  To my pleasure, he was
+positive to the idea, and we set out to add InFocus support to his
+add-on, and make the add-on suitable for the official Kodi add-on
+repository.&lt;/p&gt;
+
+&lt;p&gt;The Add-on is now working (for me, at least), with a few minor
+adjustments.  The most important change I do relative to the master
+branch in the github repository is embedding the
+&lt;a href=&quot;https://github.com/pyserial/pyserial&quot;&gt;pyserial module&lt;/a&gt; in
+the add-on.  The long term solution is to make a &quot;script&quot; type
+pyserial module for Kodi, that can be pulled in as a dependency in
+Kodi.  But until that in place, I embed it.&lt;/p&gt;
+
+&lt;p&gt;The add-on can be configured to turn on the projector when Kodi
+starts, off when Kodi stops as well as turn the projector off when the
+screensaver start and on when the screesaver stops.  It can also be
+told to set the projector source when turning on the projector.
+
+&lt;p&gt;If this sound interesting to you, check out
+&lt;a href=&quot;https://github.com/fredrik-eriksson/kodi_projcontrol&quot;&gt;the
+project github repository&lt;/a&gt;.  Perhaps you can send patches to
+support your projector too?  As soon as we find time to wrap up the
+latest changes, it should be available for easy installation using any
+Kodi instance.&lt;/p&gt;
+
+&lt;p&gt;For future improvements, I would like to add projector model
+detection and the ability to adjust the brightness level of the
+projector from within Kodi.  We also need to figure out how to handle
+the cooling period of the projector.  My projector refuses to turn on
+for 60 seconds after it was turned off.  This is not handled well by
+the add-on at the moment.&lt;/p&gt;

 
 

-&lt;/blockquote&gt;&lt;/p&gt;
-
-&lt;p&gt;Beskrivelsen avviker jo desverre ikke så veldig mye fra tilstanden
-her i Norge.&lt;/p&gt;
-
-&lt;table&gt;
-&lt;tr&gt;
-&lt;th&gt;Dataregistrering&lt;/th&gt;
-&lt;th&gt;Kina&lt;/th&gt;
-&lt;th&gt;Norge&lt;/th&gt;
-
-&lt;tr&gt;
-&lt;td&gt;Innsamling og lagring av DNA-prøver fra befolkningen&lt;/td&gt;
-&lt;td&gt;Ja&lt;/td&gt;
-&lt;td&gt;Delvis, planlagt for alle nyfødte.&lt;/td&gt;
-&lt;/tr&gt;
-
-&lt;tr&gt;
-&lt;td&gt;Ansiktsgjenkjenning&lt;/td&gt;
-&lt;td&gt;Ja&lt;/td&gt;
-&lt;td&gt;Ja&lt;/td&gt;
-&lt;/tr&gt;
-
-&lt;tr&gt;
-&lt;td&gt;Stemmegjenkjenning&lt;/td&gt;
-&lt;td&gt;Ja&lt;/td&gt;
-&lt;td&gt;Nei&lt;/td&gt;
-&lt;/tr&gt;
-
-&lt;tr&gt;
-&lt;td&gt;Posisjons-sporing av mobiltelefoner&lt;/td&gt;
-&lt;td&gt;Ja&lt;/td&gt;
-&lt;td&gt;Ja&lt;/td&gt;
-&lt;/tr&gt;
-
-&lt;tr&gt;
-&lt;td&gt;Posisjons-sporing av biler&lt;/td&gt;
-&lt;td&gt;Ja&lt;/td&gt;
-&lt;td&gt;Ja&lt;/td&gt;
-&lt;/tr&gt;
-
-&lt;/table&gt;
-
-&lt;p&gt;I Norge har jo situasjonen rundt Folkehelseinstituttets lagring av
-DNA-informasjon på vegne av politiet, der de nektet å slette
-informasjon politiet ikke hadde lov til å ta vare på, gjort det klart
-at DNA tar vare på ganske lenge.  I tillegg finnes det utallige
-biobanker som lagres til evig tid, og det er planer om å innføre
-&lt;a href=&quot;https://www.aftenposten.no/norge/i/75E9/4-av-10-mener-staten-bor-lagre-DNA-profiler-pa-alle-nyfodte&quot;&gt;evig
-lagring av DNA-materiale fra alle spebarn som fødes&lt;/a&gt; (med mulighet
-for å be om sletting).&lt;/p&gt;
-
-&lt;p&gt;I Norge er det system på plass for ansiktsgjenkjenning, som
-&lt;a href=&quot;https://www.nrk.no/norge/kun-gardermoen-har-teknologi-for-ansiktsgjenkjenning-i-norge-1.12719461&quot;&gt;en
-NRK-artikkel fra 2015&lt;/a&gt; forteller er aktiv på Gardermoen, samt
-&lt;a href=&quot;https://www.dagbladet.no/nyheter/inntil-27-000-bor-i-norge-under-falsk-id/60500781&quot;&gt;brukes
-til å analysere bilder innsamlet av myndighetene&lt;/a&gt;.  Brukes det også
-flere plasser?  Det er tett med overvåkningskamera kontrollert av
-politi og andre myndigheter i for eksempel Oslo sentrum.&lt;/p&gt;
-
-&lt;p&gt;Jeg er ikke kjent med at Norge har noe system for identifisering av
-personer ved hjelp av stemmegjenkjenning.&lt;/p&gt;
-
-&lt;p&gt;Posisjons-sporing av mobiltelefoner er ruinemessig tilgjengelig for
-blant annet politi, NAV og Finanstilsynet, i tråd med krav i
-telefonselskapenes konsesjon.  I tillegg rapporterer smarttelefoner
-sin posisjon til utviklerne av utallige mobil-apper, der myndigheter
-og andre kan hente ut informasjon ved behov.  Det er intet behov for
-noen egen app for dette.&lt;/p&gt;
-
-&lt;p&gt;Posisjons-sporing av biler er rutinemessig tilgjengelig via et tett
-nett av målepunkter på veiene (automatiske bomstasjoner,
-køfribrikke-registrering, automatiske fartsmålere og andre veikamera).
-Det er i tillegg vedtatt at alle nye biler skal selges med utstyr for
-GPS-sporing (eCall).&lt;/p&gt;
-
-&lt;p&gt;Det er jammen godt vi lever i et liberalt demokrati, og ikke en
-overvåkningsstat, eller?&lt;/p&gt;
-
-&lt;p&gt;Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til
-det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner
-til min adresse
+&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address

 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
 </description>
        </item>
        
        <item>
 &lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
 </description>
        </item>
        
        <item>

-               <title>How hard can æ, ø and å be?</title>
-               <link>http://people.skolelinux.org/pere/blog/How_hard_can______and___be_.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_hard_can______and___be_.html</guid>
-                <pubDate>Sun, 11 Feb 2018 17:10:00 +0100</pubDate>
-               <description>&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2018-02-11-peppes-unicode.jpeg&quot; align=&quot;right&quot;/&gt;
-
-&lt;p&gt;We write 2018, and it is 30 years since Unicode was introduced.
-Most of us in Norway have come to expect the use of our alphabet to
-just work with any computer system.  But it is apparently beyond reach
-of the computers printing recites at a restaurant.  Recently I visited
-a Peppes pizza resturant, and noticed a few details on the recite.
-Notice how &#39;ø&#39; and &#39;å&#39; are replaced with strange symbols in
-&#39;Servitør&#39;, &#39;Å BETALE&#39;, &#39;Beløp pr. gjest&#39;, &#39;Takk for besøket.&#39; and &#39;Vi
-gleder oss til å se deg igjen&#39;.&lt;/p&gt;
+               <title>youtube-dl for nedlasting fra NRK med undertekster - nice free software</title>
+               <link>http://people.skolelinux.org/pere/blog/youtube_dl_for_nedlasting_fra_NRK_med_undertekster___nice_free_software.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/youtube_dl_for_nedlasting_fra_NRK_med_undertekster___nice_free_software.html</guid>
+                <pubDate>Sat, 28 Apr 2018 10:30:00 +0200</pubDate>
+               <description>&lt;p&gt;I &lt;a href=&quot;https://no.wikipedia.org/wiki/VHS&quot;&gt;VHS-kassettenes&lt;/a&gt;
+tid var det rett frem å ta vare på et TV-program en ønsket å kunne se
+senere, uten å være avhengig av at programmet ble sendt på nytt.
+Kanskje ønsket en å se programmet på hytten der det ikke var
+TV-signal, eller av andre grunner ha det tilgjengelig for fremtidig
+fornøyelse.  Dette er blitt vanskeligere med introduksjon av
+digital-TV og webstreaming, der opptak til harddisk er utenfor de
+flestes kontroll hvis de bruker ufri programvare og bokser kontrollert
+av andre.  Men for NRK her i Norge, finnes det heldigvis flere fri
+programvare-alternativer, som jeg har
+&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK.html&quot;&gt;skrevet&lt;/a&gt;
+&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK_med_den__nye__l_sningen.html&quot;&gt;om&lt;/a&gt;
+&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Nedlasting_fra_NRK__som_Matroska_med_undertekster.html&quot;&gt;før&lt;/a&gt;.
+Så lenge kilden for nedlastingen er lovlig lagt ut på nett (hvilket
+jeg antar NRK gjør), så er slik lagring til privat bruk også lovlig i
+Norge.&lt;/p&gt;
+
+&lt;p&gt;Sist jeg så på saken, i 2016, nevnte jeg at
+&lt;a href=&quot;https://rg3.github.com/youtube-dl/&quot;&gt;youtube-dl&lt;/a&gt; ikke kunne
+bake undertekster fra NRK inn i videofilene, og at jeg derfor
+foretrakk andre alternativer.  Nylig oppdaget jeg at dette har endret
+seg.  Fordelen med youtube-dl er at den er tilgjengelig direkte fra
+Linux-distribusjoner som &lt;a href=&quot;https://www.debian.org/&quot;&gt;Debian&lt;/a&gt;
+og &lt;a href=&quot;https://www.ubuntu.com/&quot;&gt;Ubuntu&lt;/a&gt;, slik at en slipper å
+finne ut selv hvordan en skal få dem til å virke.&lt;/p&gt;
+
+&lt;p&gt;For å laste ned et NRK-innslag med undertekster, og få den norske
+underteksten pakket inn i videofilen, så kan følgende kommando
+brukes:&lt;/p&gt;
+
+&lt;p&gt;&lt;pre&gt;
+youtube-dl --write-sub --sub-format ttml \
+  --convert-subtitles srt --embed-subs \
+  https://tv.nrk.no/serie/ramm-ferdig-gaa/MUHU11000316/27-04-2018
+&lt;/pre&gt;&lt;/p&gt;
+
+&lt;p&gt;URL-eksemplet er dagens toppsak på tv.nrk.no.  Resultatet er en
+MP4-fil med filmen og undertekster som kan spilles av med VLC.  Merk
+at VLC ikke viser frem undertekster før du aktiverer dem.  For å gjøre
+det, høyreklikk med musa i fremviservinduet, velg menyvalget for
+undertekst og så norsk språk.  Jeg testet også &#39;--write-auto-sub&#39;,
+men det kommandolinjeargumentet ser ikke ut til å fungere, så jeg
+endte opp med settet med argumentlisten over, som jeg fant i en
+feilrapport i youtube-dl-prosjektets samling over feilrapporter.&lt;/p&gt;
+
+&lt;p&gt;Denne støtten i youtube-dl gjør det svært enkelt å lagre
+NRK-innslag, det være seg nyheter, filmer, serier eller dokumentater,
+for å ha dem tilgjengelig for fremtidig referanse og bruk, uavhengig
+av hvor lenge innslagene ligger tilgjengelig hos NRK.  Så får det ikke
+hjelpe at NRKs jurister mener at det er
+&lt;a href=&quot;http://people.skolelinux.org/pere/blog/Best___ikke_fortelle_noen_at_streaming_er_nedlasting___.html&quot;&gt;vesensforskjellig
+å legge tilgjengelig for nedlasting og for streaming&lt;/a&gt;, når det rent
+teknisk er samme sak.&lt;/p&gt;
+
+&lt;p&gt;Programmet youtube-dl støtter også en rekke andre nettsteder, se
+prosjektoversikten for
+&lt;a href=&quot;http://rg3.github.io/youtube-dl/supportedsites.html&quot;&gt;en
+komplett liste&lt;/a&gt;.&lt;/p&gt;
+</description>
+       </item>
+       
+       <item>
+               <title>Stortingsflertallet går inn for ny IP-basert sensurinfrastruktur i Norge</title>
+               <link>http://people.skolelinux.org/pere/blog/Stortingsflertallet_g_r_inn_for_ny_IP_basert_sensurinfrastruktur_i_Norge.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Stortingsflertallet_g_r_inn_for_ny_IP_basert_sensurinfrastruktur_i_Norge.html</guid>
+                <pubDate>Tue, 24 Apr 2018 15:00:00 +0200</pubDate>
+               <description>&lt;p&gt;&lt;a href=&quot;https://www.vg.no/sport/i/J1g8zj/stortingsvedtak-snart-ip-blokkerer-utenlandske-spillselskaper&quot;&gt;VG&lt;/a&gt;,
+&lt;a href=&quot;https://www.dagbladet.no/nyheter/stortinget-blokkerer-utenlandske-spillselskaper/69740219&quot;&gt;Dagbladet&lt;/a&gt;
+og
+&lt;a href=&quot;https://www.nrk.no/ostfold/tar-opp-kampen-mot-utenlandske-spillselskap-1.14021381&quot;&gt;NRK&lt;/a&gt;
+melder i dag at flertallet i Familie- og kulturkomiteen på Stortinget
+har bestemt seg for å introdusere en ny sensurinfrastruktur i Norge.
+Fra før har Norge en «frivillig» sensurinfrastruktur basert på
+DNS-navn, der de største ISP-ene basert på en liste med DNS-navn
+forgifter DNS-svar og omdirigerer til et annet IP-nummer enn det som
+ligger i DNS.  Nå kommer altså IP-basert omdirigering i tillegg.  Når
+infrastrukturen er på plass, er sensur av IP-adresser redusert et
+spørsmål om hvilke IP-nummer som skal blokkeres.  Listen over
+IP-adresser vil naturligvis endre seg etter hvert som myndighetene
+endrer seg.  Det er ingen betryggende tanke.&lt;/p&gt;
+</description>
+       </item>
+       
+       <item>
+               <title>En grunn til å takke nei til usikker digital post</title>
+               <link>http://people.skolelinux.org/pere/blog/En_grunn_til___takke_nei_til_usikker_digital_post.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/En_grunn_til___takke_nei_til_usikker_digital_post.html</guid>
+                <pubDate>Mon, 2 Apr 2018 13:30:00 +0200</pubDate>
+               <description>&lt;p&gt;Brevpost er beskyttet av straffelovens bestemmelse som gjør det
+kriminelt å åpne andres brev.  Dette følger av (ny) straffelovs
+&lt;a href=&quot;https://lovdata.no/dokument/NL/lov/2005-05-20-28/§205&quot;&gt;§ 205
+(Krenkelse av retten til privat kommunikasjon)&lt;/a&gt;, som sier at «Med
+bot eller fengsel inntil 2 år straffes den som uberettiget ...  c)
+åpner brev eller annen lukket skriftlig meddelelse som er adressert
+til en annen, eller på annen måte skaffer seg uberettiget tilgang til
+innholdet.» Dette gjelder såvel postbud som alle andre som har
+befatning med brevet etter at avsender har befatning med et lukket
+brev. Tilsvarende står også tidligere utgaver av den norske
+straffeloven.&lt;/p&gt;
+
+&lt;p&gt;Når en registrerer seg på usikre digitale postkasseløsningene, som
+f.eks. Digipost og e-Boks, og slik tar disse i bruk, så gir en de som
+står bak løsningene tillatelse til å åpne sine brev.  Dette er
+nødvendig for at innholdet i digital post skal kunne vises frem til
+mottaker via tjenestens websider.  Dermed gjelder ikke straffelovens
+paragraf om forbud mot å åpne brev, da tilgangen ikke lenger er
+uberettiget.  En gir altså fremmede tilgang til å lese sin
+korrespondanse.  I tillegg vil bruk av slike usikre digitale
+postbokser føre til at det blir registrert når du leser brevene, hvor
+du befinner deg (vha. tilkoblingens IP-adresse), hvilket utstyr du
+bruker og en rekke annen personlig informasjon som ikke er
+tilgjengelig når papirpost brukes.  Jeg foretrekker at det er
+lovmessig beskyttelse av min korrespondanse, som jo inneholder privat
+og personlig informasjon.  Det bidrar til litt bedre vern av personlig
+integritet i dagens norske samfunn.&lt;/p&gt;
+</description>
+       </item>
+       
+       <item>
+               <title>Self-appointed leaders of the Free World</title>
+               <link>http://people.skolelinux.org/pere/blog/Self_appointed_leaders_of_the_Free_World.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Self_appointed_leaders_of_the_Free_World.html</guid>
+                <pubDate>Thu, 22 Mar 2018 11:00:00 +0100</pubDate>
+               <description>&lt;p&gt;The leaders of the worlds have started to congratulate the
+re-elected Russian head of state, and this causes some criticism.  I
+am though a little fascinated by a comment from USA senator John McCain,
+&lt;a href=&quot;http://thehill.com/homenews/senate/379339-mccain-rips-trumps-congratulatory-call-to-putin-as-insult-to-russian-people&quot;&gt;sited
+by The Hill and others&lt;/a&gt;:

 
 

-&lt;p&gt;I would say that this state is passed sad and over in embarrassing.&lt;/p&gt;
+&lt;p&gt;&lt;blockquote&gt;
+&lt;p&gt;&quot;An American president does not lead the Free World by
+congratulating dictators on winning sham elections.&quot;&lt;/p&gt;
+&lt;/blockquote&gt;&lt;/p&gt;

 
 

-&lt;p&gt;I removed personal and private information to be nice.&lt;/p&gt;
+&lt;p&gt;While I totally agree with the senator here, the way the quote is
+phrased make me suspect that he is unaware of the simple fact that USA
+have not lead the Free World since at least before its government
+&lt;a href=&quot;https://en.wikipedia.org/wiki/Maher_Arar&quot;&gt;kidnapped a
+completely innocent Canadian citizen in transit on his way home to
+Canada via John F. Kennedy International Airport in September 2002 and
+sent him to be tortured in Syria for a year&lt;/a&gt;.&lt;/p&gt;

 
 

-&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
-activities, please send Bitcoin donations to my address
-&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
+&lt;p&gt;USA might be running ahead, but the path they are taking is not the
+one taken by any Free World.&lt;/p&gt;

 </description>
        </item>
        
 </description>
        </item>