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-               <title>Idea for storing trusted timestamps in a Noark 5 archive</title>
-               <link>http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html</guid>
-                <pubDate>Wed, 7 Jun 2017 21:40:00 +0200</pubDate>
-               <description>&lt;p&gt;&lt;em&gt;This is a copy of
-&lt;a href=&quot;https://lists.nuug.no/pipermail/nikita-noark/2017-June/000297.html&quot;&gt;an
-email I posted to the nikita-noark mailing list&lt;/a&gt;.  Please follow up
-there if you would like to discuss this topic.  The background is that
-we are making a free software archive system based on the Norwegian
-&lt;a href=&quot;https://www.arkivverket.no/forvaltning-og-utvikling/regelverk-og-standarder/noark-standarden&quot;&gt;Noark
-5 standard&lt;/a&gt; for government archives.&lt;/em&gt;&lt;/p&gt;
-
-&lt;p&gt;I&#39;ve been wondering a bit lately how trusted timestamps could be
-stored in Noark 5.
-&lt;a href=&quot;https://en.wikipedia.org/wiki/Trusted_timestamping&quot;&gt;Trusted
-timestamps&lt;/a&gt; can be used to verify that some information
-(document/file/checksum/metadata) have not been changed since a
-specific time in the past.  This is useful to verify the integrity of
-the documents in the archive.&lt;/p&gt;
-
-&lt;p&gt;Then it occured to me, perhaps the trusted timestamps could be
-stored as dokument variants (ie dokumentobjekt referered to from
-dokumentbeskrivelse) with the filename set to the hash it is
-stamping?&lt;/p&gt;
-
-&lt;p&gt;Given a &quot;dokumentbeskrivelse&quot; with an associated &quot;dokumentobjekt&quot;,
-a new dokumentobjekt is associated with &quot;dokumentbeskrivelse&quot; with the
-same attributes as the stamped dokumentobjekt except these
-attributes:&lt;/p&gt;
-
-&lt;ul&gt;
-
-&lt;li&gt;format -&gt; &quot;RFC3161&quot;
-&lt;li&gt;mimeType -&gt; &quot;application/timestamp-reply&quot;
-&lt;li&gt;formatDetaljer -&gt; &quot;&amp;lt;source URL for timestamp service&amp;gt;&quot;
-&lt;li&gt;filenavn -&gt; &quot;&amp;lt;sjekksum&amp;gt;.tsr&quot;
-
-&lt;/ul&gt;
-
-&lt;p&gt;This assume a service following
-&lt;a href=&quot;https://tools.ietf.org/html/rfc3161&quot;&gt;IETF RFC 3161&lt;/a&gt; is
-used, which specifiy the given MIME type for replies and the .tsr file
-ending for the content of such trusted timestamp.  As far as I can
-tell from the Noark 5 specifications, it is OK to have several
-variants/renderings of a dokument attached to a given
-dokumentbeskrivelse objekt.  It might be stretching it a bit to make
-some of these variants represent crypto-signatures useful for
-verifying the document integrity instead of representing the dokument
-itself.&lt;/p&gt;
-
-&lt;p&gt;Using the source of the service in formatDetaljer allow several
-timestamping services to be used.  This is useful to spread the risk
-of key compromise over several organisations.  It would only be a
-problem to trust the timestamps if all of the organisations are
-compromised.&lt;/p&gt;
-
-&lt;p&gt;The following oneliner on Linux can be used to generate the tsr
-file.  $input is the path to the file to checksum, and $sha256 is the
-SHA-256 checksum of the file (ie the &quot;&lt;sjekksum&gt;.tsr&quot; value mentioned
-above).&lt;/p&gt;
-
-&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
-openssl ts -query -data &quot;$inputfile&quot; -cert -sha256 -no_nonce \
-  | curl -s -H &quot;Content-Type: application/timestamp-query&quot; \
-      --data-binary &quot;@-&quot; http://zeitstempel.dfn.de &gt; $sha256.tsr
-&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;
-
-&lt;p&gt;To verify the timestamp, you first need to download the public key
-of the trusted timestamp service, for example using this command:&lt;/p&gt;
-
-&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
-wget -O ca-cert.txt \
-  https://pki.pca.dfn.de/global-services-ca/pub/cacert/chain.txt
-&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;
-
-&lt;p&gt;Note, the public key should be stored alongside the timestamps in
-the archive to make sure it is also available 100 years from now.  It
-is probably a good idea to standardise how and were to store such
-public keys, to make it easier to find for those trying to verify
-documents 100 or 1000 years from now. :)&lt;/p&gt;
-
-&lt;p&gt;The verification itself is a simple openssl command:&lt;/p&gt;
-
-&lt;p&gt;&lt;blockquote&gt;&lt;pre&gt;
-openssl ts -verify -data $inputfile -in $sha256.tsr \
-  -CAfile ca-cert.txt -text
-&lt;/pre&gt;&lt;/blockquote&gt;&lt;/p&gt;
-
-&lt;p&gt;Is there any reason this approach would not work?  Is it somehow against
-the Noark 5 specification?&lt;/p&gt;
+               <title>Software created using taxpayers’ money should be Free Software</title>
+               <link>http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html</guid>
+                <pubDate>Thu, 30 Aug 2018 13:50:00 +0200</pubDate>
+               <description>&lt;p&gt;It might seem obvious that software created using tax money should
+be available for everyone to use and improve.  Free Software
+Foundation Europe recentlystarted a campaign to help get more people
+to understand this, and I just signed the petition on
+&lt;a href=&quot;https://publiccode.eu/&quot;&gt;Public Money, Public Code&lt;/a&gt; to help
+them. I hope you too will do the same.&lt;/p&gt;

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-               <title>Når nynorskoversettelsen svikter til eksamen...</title>
-               <link>http://people.skolelinux.org/pere/blog/N_r_nynorskoversettelsen_svikter_til_eksamen___.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/N_r_nynorskoversettelsen_svikter_til_eksamen___.html</guid>
-                <pubDate>Sat, 3 Jun 2017 08:20:00 +0200</pubDate>
-               <description>&lt;p&gt;&lt;a href=&quot;http://www.aftenposten.no/norge/Krever-at-elever-ma-fa-annullert-eksamen-etter-rot-med-oppgavetekster-622459b.html&quot;&gt;Aftenposten
-melder i dag&lt;/a&gt; om feil i eksamensoppgavene for eksamen i politikk og
-menneskerettigheter, der teksten i bokmåls og nynorskutgaven ikke var
-like.  Oppgaveteksten er gjengitt i artikkelen, og jeg ble nysgjerring
-på om den fri oversetterløsningen
-&lt;a href=&quot;https://www.apertium.org/&quot;&gt;Apertium&lt;/a&gt; ville gjort en bedre
-jobb enn Utdanningsdirektoratet.  Det kan se slik ut.&lt;/p&gt;
-
-&lt;p&gt;Her er bokmålsoppgaven fra eksamenen:&lt;/p&gt;
-
-&lt;blockquote&gt;
-&lt;p&gt;Drøft utfordringene knyttet til nasjonalstatenes og andre aktørers
-rolle og muligheter til å håndtere internasjonale utfordringer, som
-for eksempel flykningekrisen.&lt;/p&gt;
-
-&lt;p&gt;Vedlegge er eksempler på tekster som kan gi relevante perspektiver
-på temaet:&lt;/p&gt;
-&lt;ol&gt;
-&lt;li&gt;Flykningeregnskapet 2016, UNHCR og IDMC
-&lt;li&gt;«Grenseløst Europa for fall» A-Magasinet, 26. november 2015
-&lt;/ol&gt;
-
-&lt;/blockquote&gt;
-
-&lt;p&gt;Dette oversetter Apertium slik:&lt;/p&gt;
-
-&lt;blockquote&gt;
-&lt;p&gt;Drøft utfordringane knytte til nasjonalstatane sine og rolla til
-andre aktørar og høve til å handtera internasjonale utfordringar, som
-til dømes *flykningekrisen.&lt;/p&gt;
-
-&lt;p&gt;Vedleggja er døme på tekster som kan gje relevante perspektiv på
-temaet:&lt;/p&gt;
-
-&lt;ol&gt;
-&lt;li&gt;*Flykningeregnskapet 2016, *UNHCR og *IDMC&lt;/li&gt;
-&lt;li&gt;«*Grenseløst Europa for fall» A-Magasinet, 26. november 2015&lt;/li&gt;
-&lt;/ol&gt;
-
-&lt;/blockquote&gt;
-
-&lt;p&gt;Ord som ikke ble forstått er markert med stjerne (*), og trenger
-ekstra språksjekk.  Men ingen ord er forsvunnet, slik det var i
-oppgaven elevene fikk presentert på eksamen.  Jeg mistenker dog at
-&quot;andre aktørers rolle og muligheter til ...&quot; burde vært oversatt til
-&quot;rolla til andre aktørar og deira høve til ...&quot; eller noe slikt, men
-det er kanskje flisespikking.  Det understreker vel bare at det alltid
-trengs korrekturlesning etter automatisk oversettelse.&lt;/p&gt;
+               <title>A bit more on privacy respecting health monitor / fitness tracker</title>
+               <link>http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html</guid>
+                <pubDate>Mon, 13 Aug 2018 09:00:00 +0200</pubDate>
+               <description>&lt;p&gt;A few days ago, I wondered if there are any privacy respecting
+health monitors and/or fitness trackers available for sale these days.
+I would like to buy one, but do not want to share my personal data
+with strangers, nor be forced to have a mobile phone to get data out
+of the unit.  I&#39;ve received some ideas, and would like to share them
+with you.
+
+One interesting data point was a pointer to a Free Software app for
+Android named
+&lt;a href=&quot;https://github.com/Freeyourgadget/Gadgetbridge/&quot;&gt;Gadgetbridge&lt;/a&gt;.
+It provide cloudless collection and storing of data from a variety of
+trackers.  Its
+&lt;a href=&quot;https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices&quot;&gt;list
+of supported devices&lt;/a&gt; is a good indicator for units where the
+protocol is fairly open, as it is obviously being handled by Free
+Software.  Other units are reportedly encrypting the collected
+information with their own public key, making sure only the vendor
+cloud service is able to extract data from the unit.  The people
+contacting me about Gadgetbirde said they were using
+&lt;a href=&quot;https://us.amazfit.com/shop/bip?variant=336750&quot;&gt;Amazfit
+Bip&lt;/a&gt; and
+&lt;a href=&quot;http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/&quot;&gt;Xiaomi
+Band 3&lt;/a&gt;.&lt;/p&gt;
+
+&lt;p&gt;I also got a suggestion to look at some of the units from Garmin.
+I was told their GPS watches can be connected via USB and show up as a
+USB storage device with
+&lt;a href=&quot;https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html&quot;&gt;Garmin
+FIT files&lt;/a&gt; containing the collected measurements.  While
+proprietary, FIT files apparently can be read at least by
+&lt;a href=&quot;https://www.gpsbabel.org&quot;&gt;GPSBabel&lt;/a&gt; and the
+&lt;a href=&quot;https://apps.nextcloud.com/apps/gpxpod&quot;&gt;GpxPod&lt;/a&gt; Nextcloud
+app.  It is unclear to me if they can read step count and heart rate
+data.  The person I talked to was using a
+&lt;a href=&quot;https://buy.garmin.com/en-US/US/p/564291&quot;&gt;Garmin Forerunner
+935&lt;/a&gt;, which is a fairly expensive unit.  I doubt it is worth it for
+a unit where the vendor clearly is trying its best to move from open
+to closed systems.  I still remember when Garmin dropped NMEA support
+in its GPSes.&lt;/p&gt;
+
+&lt;p&gt;A final idea was to build ones own unit, perhaps by basing it on a
+wearable hardware platforms like
+&lt;a href=&quot;https://learn.adafruit.com/flora-geo-watch&quot;&gt;the Flora Geo
+Watch&lt;/a&gt;.  Sound like fun, but I had more money than time to spend on
+the topic, so I suspect it will have to wait for another time.&lt;/p&gt;
+
+&lt;p&gt;While I was working on tracking down links, I came across an
+inspiring TED talk by Dave Debronkart about
+&lt;a href=&quot;https://archive.org/details/DavedeBronkart_2010X&quot;&gt;being a
+e-patient&lt;/a&gt;, and discovered the web site
+&lt;a href=&quot;https://participatorymedicine.org/epatients/&quot;&gt;Participatory
+Medicine&lt;/a&gt;.  If you too want to track your own health and fitness
+without having information about your private life floating around on
+computers owned by others, I recommend checking it out.&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;

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-               <title>Epost inn som arkivformat i Riksarkivarens forskrift?</title>
-               <link>http://people.skolelinux.org/pere/blog/Epost_inn_som_arkivformat_i_Riksarkivarens_forskrift_.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Epost_inn_som_arkivformat_i_Riksarkivarens_forskrift_.html</guid>
-                <pubDate>Thu, 27 Apr 2017 11:30:00 +0200</pubDate>
-               <description>&lt;p&gt;I disse dager, med frist 1. mai, har Riksarkivaren ute en høring på
-sin forskrift.  Som en kan se er det ikke mye tid igjen før fristen
-som går ut på søndag.  Denne forskriften er det som lister opp hvilke
-formater det er greit å arkivere i
-&lt;a href=&quot;http://www.arkivverket.no/arkivverket/Offentleg-forvalting/Noark/Noark-5&quot;&gt;Noark
-5-løsninger&lt;/a&gt; i Norge.&lt;/p&gt;
-
-&lt;p&gt;Jeg fant høringsdokumentene hos
-&lt;a href=&quot;https://www.arkivrad.no/aktuelt/riksarkivarens-forskrift-pa-horing&quot;&gt;Norsk
-Arkivråd&lt;/a&gt; etter å ha blitt tipset på epostlisten til
-&lt;a href=&quot;https://github.com/hiOA-ABI/nikita-noark5-core&quot;&gt;fri
-programvareprosjektet Nikita Noark5-Core&lt;/a&gt;, som lager et Noark 5
-Tjenestegresesnitt.  Jeg er involvert i Nikita-prosjektet og takket
-være min interesse for tjenestegrensesnittsprosjektet har jeg lest en
-god del Noark 5-relaterte dokumenter, og til min overraskelse oppdaget
-at standard epost ikke er på listen over godkjente formater som kan
-arkiveres.  Høringen med frist søndag er en glimrende mulighet til å
-forsøke å gjøre noe med det.  Jeg holder på med
-&lt;a href=&quot;https://github.com/petterreinholdtsen/noark5-tester/blob/master/docs/hoering-arkivforskrift.tex&quot;&gt;egen
-høringsuttalelse&lt;/a&gt;, og lurer på om andre er interessert i å støtte
-forslaget om å tillate arkivering av epost som epost i arkivet.&lt;/p&gt;
-
-&lt;p&gt;Er du igang med å skrive egen høringsuttalelse allerede?  I så fall
-kan du jo vurdere å ta med en formulering om epost-lagring. Jeg tror
-ikke det trengs så mye.  Her et kort forslag til tekst:&lt;/p&gt;
-
-&lt;p&gt;&lt;blockquote&gt;
-
-  &lt;p&gt;Viser til høring sendt ut 2017-02-17 (Riksarkivarens referanse
-  2016/9840 HELHJO), og tillater oss å sende inn noen innspill om
-  revisjon av Forskrift om utfyllende tekniske og arkivfaglige
-  bestemmelser om behandling av offentlige arkiver (Riksarkivarens
-  forskrift).&lt;/p&gt;
-
-  &lt;p&gt;Svært mye av vår kommuikasjon foregår i dag på e-post.  Vi
-  foreslår derfor at Internett-e-post, slik det er beskrevet i IETF
-  RFC 5322,
-  &lt;a href=&quot;https://tools.ietf.org/html/rfc5322&quot;&gt;https://tools.ietf.org/html/rfc5322&lt;/a&gt;. bør
-  inn som godkjent dokumentformat.  Vi foreslår at forskriftens
-  oversikt over godkjente dokumentformater ved innlevering i § 5-16
-  endres til å ta med Internett-e-post.&lt;/p&gt;
-
-&lt;/blockquote&gt;&lt;/p&gt;
-
-&lt;p&gt;Som del av arbeidet med tjenestegrensesnitt har vi testet hvordan
-epost kan lagres i en Noark 5-struktur, og holder på å skrive et
-forslag om hvordan dette kan gjøres som vil bli sendt over til
-arkivverket så snart det er ferdig.  De som er interesserte kan
-&lt;a href=&quot;https://github.com/petterreinholdtsen/noark5-tester/blob/master/docs/epostlagring.md&quot;&gt;følge
-fremdriften på web&lt;/a&gt;.&lt;/p&gt;
-
-&lt;p&gt;Oppdatering 2017-04-28: I dag ble høringuttalelsen jeg skrev
-  &lt;a href=&quot;https://www.nuug.no/news/NUUGs_h_ringuttalelse_til_Riksarkivarens_forskrift.shtml&quot;&gt;sendt
-  inn av foreningen NUUG&lt;/a&gt;.&lt;/p&gt;
+               <title>Privacy respecting health monitor / fitness tracker?</title>
+               <link>http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html</guid>
+                <pubDate>Tue, 7 Aug 2018 16:00:00 +0200</pubDate>
+               <description>&lt;p&gt;Dear lazyweb,&lt;/p&gt;
+
+&lt;p&gt;I wonder, is there a fitness tracker / health monitor available for
+sale today that respect the users privacy?  With this I mean a
+watch/bracelet capable of measuring pulse rate and other
+fitness/health related values (and by all means, also the correct time
+and location if possible), which is &lt;strong&gt;only&lt;/strong&gt; provided for
+me to extract/read from the unit with computer without a radio beacon
+and Internet connection.  In other words, it do not depend on a cell
+phone app, and do make the measurements available via other peoples
+computer (aka &quot;the cloud&quot;).  The collected data should be available
+using only free software.  I&#39;m not interested in depending on some
+non-free software that will leave me high and dry some time in the
+future.  I&#39;ve been unable to find any such unit.  I would like to buy
+it.  The ones I have seen for sale here in Norway are proud to report
+that they share my health data with strangers (aka &quot;cloud enabled&quot;).
+Is there an alternative?  I&#39;m not interested in giving money to people
+requiring me to accept &quot;privacy terms&quot; to allow myself to measure my
+own health.&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;

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-               <title>Offentlig elektronisk postjournal blokkerer tilgang for utvalgte webklienter</title>
-               <link>http://people.skolelinux.org/pere/blog/Offentlig_elektronisk_postjournal_blokkerer_tilgang_for_utvalgte_webklienter.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Offentlig_elektronisk_postjournal_blokkerer_tilgang_for_utvalgte_webklienter.html</guid>
-                <pubDate>Thu, 20 Apr 2017 13:00:00 +0200</pubDate>
-               <description>&lt;p&gt;Jeg oppdaget i dag at &lt;a href=&quot;https://www.oep.no/&quot;&gt;nettstedet som
-publiserer offentlige postjournaler fra statlige etater&lt;/a&gt;, OEP, har
-begynt å blokkerer enkelte typer webklienter fra å få tilgang.  Vet
-ikke hvor mange det gjelder, men det gjelder i hvert fall libwww-perl
-og curl.  For å teste selv, kjør følgende:&lt;/p&gt;
+               <title>Sharing images with friends and family using RSS and EXIF/XMP metadata</title>
+               <link>http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html</guid>
+                <pubDate>Tue, 31 Jul 2018 23:30:00 +0200</pubDate>
+               <description>&lt;p&gt;For a while now, I have looked for a sensible way to share images
+with my family using a self hosted solution, as it is unacceptable to
+place images from my personal life under the control of strangers
+working for data hoarders like Google or Dropbox.  The last few days I
+have drafted an approach that might work out, and I would like to
+share it with you.  I would like to publish images on a server under
+my control, and point some Internet connected display units using some
+free and open standard to the images I published.  As my primary
+language is not limited to ASCII, I need to store metadata using
+UTF-8.  Many years ago, I hoped to find a digital photo frame capable
+of reading a RSS feed with image references (aka using the
+&amp;lt;enclosure&amp;gt; RSS tag), but was unable to find a current supplier
+of such frames.  In the end I gave up that approach.&lt;/p&gt;
+
+&lt;p&gt;Some months ago, I discovered that
+&lt;a href=&quot;https://www.jwz.org/xscreensaver/&quot;&gt;XScreensaver&lt;/a&gt; is able to
+read images from a RSS feed, and used it to set up a screen saver on
+my home info screen, showing images from the Daily images feed from
+NASA.  This proved to work well.  More recently I discovered that
+&lt;a href=&quot;https://kodi.tv&quot;&gt;Kodi&lt;/a&gt; (both using
+&lt;a href=&quot;https://www.openelec.tv/&quot;&gt;OpenELEC&lt;/a&gt; and
+&lt;a href=&quot;https://libreelec.tv&quot;&gt;LibreELEC&lt;/a&gt;) provide the
+&lt;a href=&quot;https://github.com/grinsted/script.screensaver.feedreader&quot;&gt;Feedreader&lt;/a&gt;
+screen saver capable of reading a RSS feed with images and news.  For
+fun, I used it this summer to test Kodi on my parents TV by hooking up
+a Raspberry PI unit with LibreELEC, and wanted to provide them with a
+screen saver showing selected pictures from my selection.&lt;/p&gt;
+
+&lt;p&gt;Armed with motivation and a test photo frame, I set out to generate
+a RSS feed for the Kodi instance.  I adjusted my &lt;a
+href=&quot;https://freedombox.org/&quot;&gt;Freedombox&lt;/a&gt; instance, created
+/var/www/html/privatepictures/, wrote a small Perl script to extract
+title and description metadata from the photo files and generate the
+RSS file.  I ended up using Perl instead of python, as the
+libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
+tags I ended up using, while python3-exif did not.  The relevant EXIF
+tags only support ASCII, so I had to find better alternatives.  XMP
+seem to have the support I need.&lt;/p&gt;
+
+&lt;p&gt;I am a bit unsure which EXIF/XMP tags to use, as I would like to
+use tags that can be easily added/updated using normal free software
+photo managing software.  I ended up using the tags set using this
+exiftool command, as these tags can also be set using digiKam:&lt;/p&gt;

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

-% curl -v -s https://www.oep.no/pub/report.xhtml?reportId=3 2&gt;&amp;1 |grep &#39;&lt; HTTP&#39;
-&lt; HTTP/1.1 404 Not Found
-% curl -v -s --header &#39;User-Agent:Opera/12.0&#39; https://www.oep.no/pub/report.xhtml?reportId=3 2&gt;&amp;1 |grep &#39;&lt; HTTP&#39;
-&lt; HTTP/1.1 200 OK
-%
+exiftool -headline=&#39;The RSS image title&#39; \
+  -description=&#39;The RSS image description.&#39; \
+  -subject+=for-family photo.jpeg

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

-&lt;p&gt;Her kan en se at tjenesten gir «404 Not Found» for curl i
-standardoppsettet, mens den gir «200 OK» hvis curl hevder å være Opera
-versjon 12.0.  Offentlig elektronisk postjournal startet blokkeringen
-2017-03-02.&lt;/p&gt;
-
-&lt;p&gt;Blokkeringen vil gjøre det litt vanskeligere å maskinelt hente
-informasjon fra oep.no.  Kan blokkeringen være gjort for å hindre
-automatisert innsamling av informasjon fra OEP, slik Pressens
-Offentlighetsutvalg gjorde for å dokumentere hvordan departementene
-hindrer innsyn i
-&lt;a href=&quot;http://presse.no/dette-mener-np/undergraver-offentlighetsloven/&quot;&gt;rapporten
-«Slik hindrer departementer innsyn» som ble publiserte i januar
-2017&lt;/a&gt;.  Det virker usannsynlig, da det jo er trivielt å bytte
-User-Agent til noe nytt.&lt;/p&gt;
-
-&lt;p&gt;Finnes det juridisk grunnlag for det offentlige å diskriminere
-webklienter slik det gjøres her?  Der tilgang gis eller ikke alt etter
-hva klienten sier at den heter?  Da OEP eies av DIFI og driftes av
-Basefarm, finnes det kanskje noen dokumenter sendt mellom disse to
-aktørene man kan be om innsyn i for å forstå hva som har skjedd.  Men
-&lt;a href=&quot;https://www.oep.no/search/result.html?period=dateRange&amp;fromDate=01.01.2016&amp;toDate=01.04.2017&amp;dateType=documentDate&amp;caseDescription=&amp;descType=both&amp;caseNumber=&amp;documentNumber=&amp;sender=basefarm&amp;senderType=both&amp;documentType=all&amp;legalAuthority=&amp;archiveCode=&amp;list2=196&amp;searchType=advanced&amp;Search=Search+in+records&quot;&gt;postjournalen
-til DIFI viser kun to dokumenter&lt;/a&gt; det siste året mellom DIFI og
-Basefarm.
-&lt;a href=&quot;https://www.mimesbronn.no/request/blokkering_av_tilgang_til_oep_fo&quot;&gt;Mimes brønn neste&lt;/a&gt;,
-tenker jeg.&lt;/p&gt;
+&lt;p&gt;I initially tried the &quot;-title&quot; and &quot;keyword&quot; tags, but they were
+invisible in digiKam, so I changed to &quot;-headline&quot; and &quot;-subject&quot;.  I
+use the keyword/subject &#39;for-family&#39; to flag that the photo should be
+shared with my family.  Images with this keyword set are located and
+copied into my Freedombox for the RSS generating script to find.&lt;/p&gt;
+
+&lt;p&gt;Are there better ways to do this?  Get in touch if you have better
+suggestions.&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;

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

-               <title>Free software archive system Nikita now able to store documents</title>
-               <link>http://people.skolelinux.org/pere/blog/Free_software_archive_system_Nikita_now_able_to_store_documents.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Free_software_archive_system_Nikita_now_able_to_store_documents.html</guid>
-                <pubDate>Sun, 19 Mar 2017 08:00:00 +0100</pubDate>
-               <description>&lt;p&gt;The &lt;a href=&quot;https://github.com/hiOA-ABI/nikita-noark5-core&quot;&gt;Nikita
-Noark 5 core project&lt;/a&gt; is implementing the Norwegian standard for
-keeping an electronic archive of government documents.
-&lt;a href=&quot;http://www.arkivverket.no/arkivverket/Offentlig-forvaltning/Noark/Noark-5/English-version&quot;&gt;The
-Noark 5 standard&lt;/a&gt; document the requirement for data systems used by
-the archives in the Norwegian government, and the Noark 5 web interface
-specification document a REST web service for storing, searching and
-retrieving documents and metadata in such archive.  I&#39;ve been involved
-in the project since a few weeks before Christmas, when the Norwegian
-Unix User Group
-&lt;a href=&quot;https://www.nuug.no/news/NOARK5_kjerne_som_fri_programvare_f_r_epostliste_hos_NUUG.shtml&quot;&gt;announced
-it supported the project&lt;/a&gt;.  I believe this is an important project,
-and hope it can make it possible for the government archives in the
-future to use free software to keep the archives we citizens depend
-on.  But as I do not hold such archive myself, personally my first use
-case is to store and analyse public mail journal metadata published
-from the government.  I find it useful to have a clear use case in
-mind when developing, to make sure the system scratches one of my
-itches.&lt;/p&gt;
-
-&lt;p&gt;If you would like to help make sure there is a free software
-alternatives for the archives, please join our IRC channel
-(&lt;a href=&quot;irc://irc.freenode.net/%23nikita&quot;&quot;&gt;#nikita on
-irc.freenode.net&lt;/a&gt;) and
-&lt;a href=&quot;https://lists.nuug.no/mailman/listinfo/nikita-noark&quot;&gt;the
-project mailing list&lt;/a&gt;.&lt;/p&gt;
-
-&lt;p&gt;When I got involved, the web service could store metadata about
-documents.  But a few weeks ago, a new milestone was reached when it
-became possible to store full text documents too.  Yesterday, I
-completed an implementation of a command line tool
-&lt;tt&gt;archive-pdf&lt;/tt&gt; to upload a PDF file to the archive using this
-API.  The tool is very simple at the moment, and find existing
-&lt;a href=&quot;https://en.wikipedia.org/wiki/Fonds&quot;&gt;fonds&lt;/a&gt;, series and
-files while asking the user to select which one to use if more than
-one exist.  Once a file is identified, the PDF is associated with the
-file and uploaded, using the title extracted from the PDF itself.  The
-process is fairly similar to visiting the archive, opening a cabinet,
-locating a file and storing a piece of paper in the archive.  Here is
-a test run directly after populating the database with test data using
-our API tester:&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;p&gt;&lt;blockquote&gt;&lt;pre&gt;
-~/src//noark5-tester$ ./archive-pdf mangelmelding/mangler.pdf
-using arkiv: Title of the test fonds created 2017-03-18T23:49:32.103446
-using arkivdel: Title of the test series created 2017-03-18T23:49:32.103446
-
- 0 - Title of the test case file created 2017-03-18T23:49:32.103446
- 1 - Title of the test file created 2017-03-18T23:49:32.103446
-Select which mappe you want (or search term): 0
-Uploading mangelmelding/mangler.pdf
-  PDF title: Mangler i spesifikasjonsdokumentet for NOARK 5 Tjenestegrensesnitt
-  File 2017/1: Title of the test case file created 2017-03-18T23:49:32.103446
-~/src//noark5-tester$
-&lt;/pre&gt;&lt;/blockquote&gt;&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;You can see here how the fonds (arkiv) and serie (arkivdel) only had
-one option, while the user need to choose which file (mappe) to use
-among the two created by the API tester.  The &lt;tt&gt;archive-pdf&lt;/tt&gt;
-tool can be found in the git repository for the API tester.&lt;/p&gt;
-
-&lt;p&gt;In the project, I have been mostly working on
-&lt;a href=&quot;https://github.com/petterreinholdtsen/noark5-tester&quot;&gt;the API
-tester&lt;/a&gt; so far, while getting to know the code base.  The API
-tester currently use
-&lt;a href=&quot;https://en.wikipedia.org/wiki/HATEOAS&quot;&gt;the HATEOAS links&lt;/a&gt;
-to traverse the entire exposed service API and verify that the exposed
-operations and objects match the specification, as well as trying to
-create objects holding metadata and uploading a simple XML file to
-store.  The tester has proved very useful for finding flaws in our
-implementation, as well as flaws in the reference site and the
-specification.&lt;/p&gt;
-
-&lt;p&gt;The test document I uploaded is a summary of all the specification
-defects we have collected so far while implementing the web service.
-There are several unclear and conflicting parts of the specification,
-and we have
-&lt;a href=&quot;https://github.com/petterreinholdtsen/noark5-tester/tree/master/mangelmelding&quot;&gt;started
-writing down&lt;/a&gt; the questions we get from implementing it.  We use a
-format inspired by how &lt;a href=&quot;http://www.opengroup.org/austin/&quot;&gt;The
-Austin Group&lt;/a&gt; collect defect reports for the POSIX standard with
-&lt;a href=&quot;http://www.opengroup.org/austin/mantis.html&quot;&gt;their
-instructions for the MANTIS defect tracker system&lt;/a&gt;, in lack of an official way to structure defect reports for Noark 5 (our first submitted defect report was a &lt;a href=&quot;https://github.com/petterreinholdtsen/noark5-tester/blob/master/mangelmelding/sendt/2017-03-15-mangel-prosess.md&quot;&gt;request for a procedure for submitting defect reports&lt;/a&gt; :).
-
-&lt;p&gt;The Nikita project is implemented using Java and Spring, and is
-fairly easy to get up and running using Docker containers for those
-that want to test the current code base.  The API tester is
-implemented in Python.&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;

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

-               <title>Detecting NFS hangs on Linux without hanging yourself...</title>
-               <link>http://people.skolelinux.org/pere/blog/Detecting_NFS_hangs_on_Linux_without_hanging_yourself___.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Detecting_NFS_hangs_on_Linux_without_hanging_yourself___.html</guid>
-                <pubDate>Thu, 9 Mar 2017 15:20:00 +0100</pubDate>
-               <description>&lt;p&gt;Over the years, administrating thousand of NFS mounting linux
-computers at the time, I often needed a way to detect if the machine
-was experiencing NFS hang.  If you try to use &lt;tt&gt;df&lt;/tt&gt; or look at a
-file or directory affected by the hang, the process (and possibly the
-shell) will hang too.  So you want to be able to detect this without
-risking the detection process getting stuck too.  It has not been
-obvious how to do this.  When the hang has lasted a while, it is
-possible to find messages like these in dmesg:&lt;/p&gt;
-
-&lt;p&gt;&lt;blockquote&gt;
-nfs: server nfsserver not responding, still trying
-&lt;br&gt;nfs: server nfsserver OK
-&lt;/blockquote&gt;&lt;/p&gt;
-  
-&lt;p&gt;It is hard to know if the hang is still going on, and it is hard to
-be sure looking in dmesg is going to work.  If there are lots of other
-messages in dmesg the lines might have rotated out of site before they
-are noticed.&lt;/p&gt;
-
-&lt;p&gt;While reading through the nfs client implementation in linux kernel
-code, I came across some statistics that seem to give a way to detect
-it.  The om_timeouts sunrpc value in the kernel will increase every
-time the above log entry is inserted into dmesg.  And after digging a
-bit further, I discovered that this value show up in
-/proc/self/mountstats on Linux.&lt;/p&gt;
-
-&lt;p&gt;The mountstats content seem to be shared between files using the
-same file system context, so it is enough to check one of the
-mountstats files to get the state of the mount point for the machine.
-I assume this will not show lazy umounted NFS points, nor NFS mount
-points in a different process context (ie with a different filesystem
-view), but that does not worry me.&lt;/p&gt;
-
-&lt;p&gt;The content for a NFS mount point look similar to this:&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;PS: See
+&lt;ahref=&quot;http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html&quot;&gt;the
+followup post&lt;/a&gt; for a even better approach.&lt;/p&gt;
+
+&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;p&gt;&lt;blockquote&gt;&lt;pre&gt;
-[...]
-device /dev/mapper/Debian-var mounted on /var with fstype ext3
-device nfsserver:/mnt/nfsserver/home0 mounted on /mnt/nfsserver/home0 with fstype nfs statvers=1.1
-        opts:   rw,vers=3,rsize=65536,wsize=65536,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,soft,nolock,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=129.240.3.145,mountvers=3,mountport=4048,mountproto=udp,local_lock=all
-        age:    7863311
-        caps:   caps=0x3fe7,wtmult=4096,dtsize=8192,bsize=0,namlen=255
-        sec:    flavor=1,pseudoflavor=1
-        events: 61063112 732346265 1028140 35486205 16220064 8162542 761447191 71714012 37189 3891185 45561809 110486139 4850138 420353 15449177 296502 52736725 13523379 0 52182 9016896 1231 0 0 0 0 0 
-        bytes:  166253035039 219519120027 0 0 40783504807 185466229638 11677877 45561809 
-        RPC iostats version: 1.0  p/v: 100003/3 (nfs)
-        xprt:   tcp 925 1 6810 0 0 111505412 111480497 109 2672418560317 0 248 53869103 22481820
-        per-op statistics
-                NULL: 0 0 0 0 0 0 0 0
-             GETATTR: 61063106 61063108 0 9621383060 6839064400 453650 77291321 78926132
-             SETATTR: 463469 463470 0 92005440 66739536 63787 603235 687943
-              LOOKUP: 17021657 17021657 0 3354097764 4013442928 57216 35125459 35566511
-              ACCESS: 14281703 14290009 5 2318400592 1713803640 1709282 4865144 7130140
-            READLINK: 125 125 0 20472 18620 0 1112 1118
-                READ: 4214236 4214237 0 715608524 41328653212 89884 22622768 22806693
-               WRITE: 8479010 8494376 22 187695798568 1356087148 178264904 51506907 231671771
-              CREATE: 171708 171708 0 38084748 46702272 873 1041833 1050398
-               MKDIR: 3680 3680 0 773980 993920 26 23990 24245
-             SYMLINK: 903 903 0 233428 245488 6 5865 5917
-               MKNOD: 80 80 0 20148 21760 0 299 304
-              REMOVE: 429921 429921 0 79796004 61908192 3313 2710416 2741636
-               RMDIR: 3367 3367 0 645112 484848 22 5782 6002
-              RENAME: 466201 466201 0 130026184 121212260 7075 5935207 5961288
-                LINK: 289155 289155 0 72775556 67083960 2199 2565060 2585579
-             READDIR: 2933237 2933237 0 516506204 13973833412 10385 3190199 3297917
-         READDIRPLUS: 1652839 1652839 0 298640972 6895997744 84735 14307895 14448937
-              FSSTAT: 6144 6144 0 1010516 1032192 51 9654 10022
-              FSINFO: 2 2 0 232 328 0 1 1
-            PATHCONF: 1 1 0 116 140 0 0 0
-              COMMIT: 0 0 0 0 0 0 0 0
-
-device binfmt_misc mounted on /proc/sys/fs/binfmt_misc with fstype binfmt_misc
-[...]
-&lt;/pre&gt;&lt;/blockquote&gt;&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;The key number to look at is the third number in the per-op list.
-It is the number of NFS timeouts experiences per file system
-operation.  Here 22 write timeouts and 5 access timeouts.  If these
-numbers are increasing, I believe the machine is experiencing NFS
-hang.  Unfortunately the timeout value do not start to increase right
-away.  The NFS operations need to time out first, and this can take a
-while.  The exact timeout value depend on the setup.  For example the
-defaults for TCP and UDP mount points are quite different, and the
-timeout value is affected by the soft, hard, timeo and retrans NFS
-mount options.&lt;/p&gt;
-
-&lt;p&gt;The only way I have been able to get working on Debian and RedHat
-Enterprise Linux for getting the timeout count is to peek in /proc/.
-But according to
-&lt;ahref=&quot;http://docs.oracle.com/cd/E19253-01/816-4555/netmonitor-12/index.html&quot;&gt;Solaris
-10 System Administration Guide: Network Services&lt;/a&gt;, the &#39;nfsstat -c&#39;
-command can be used to get these timeout values.  But this do not work
-on Linux, as far as I can tell.  I
-&lt;ahref=&quot;http://bugs.debian.org/857043&quot;&gt;asked Debian about this&lt;/a&gt;,
-but have not seen any replies yet.&lt;/p&gt;
-
-&lt;p&gt;Is there a better way to figure out if a Linux NFS client is
-experiencing NFS hangs?  Is there a way to detect which processes are
-affected?  Is there a way to get the NFS mount going quickly once the
-network problem causing the NFS hang has been cleared?  I would very
-much welcome some clues, as we regularly run into NFS hangs.&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;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;

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

-               <title>How does it feel to be wiretapped, when you should be doing the wiretapping...</title>
-               <link>http://people.skolelinux.org/pere/blog/How_does_it_feel_to_be_wiretapped__when_you_should_be_doing_the_wiretapping___.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/How_does_it_feel_to_be_wiretapped__when_you_should_be_doing_the_wiretapping___.html</guid>
-                <pubDate>Wed, 8 Mar 2017 11:50:00 +0100</pubDate>
-               <description>&lt;p&gt;So the new president in the United States of America claim to be
-surprised to discover that he was wiretapped during the election
-before he was elected president.  He even claim this must be illegal.
-Well, doh, if it is one thing the confirmations from Snowden
-documented, it is that the entire population in USA is wiretapped, one
-way or another.  Of course the president candidates were wiretapped,
-alongside the senators, judges and the rest of the people in USA.&lt;/p&gt;
-
-&lt;p&gt;Next, the Federal Bureau of Investigation ask the Department of
-Justice to go public rejecting the claims that Donald Trump was
-wiretapped illegally.  I fail to see the relevance, given that I am
-sure the surveillance industry in USA believe they have all the legal
-backing they need to conduct mass surveillance on the entire
-world.&lt;/p&gt;
-
-&lt;p&gt;There is even the director of the FBI stating that he never saw an
-order requesting wiretapping of Donald Trump.  That is not very
-surprising, given how the FISA court work, with all its activity being
-secret.  Perhaps he only heard about it?&lt;/p&gt;
-
-&lt;p&gt;What I find most sad in this story is how Norwegian journalists
-present it.  In a news reports the other day in the radio from the
-Norwegian National broadcasting Company (NRK), I heard the journalist
-claim that &#39;the FBI denies any wiretapping&#39;, while the reality is that
-&#39;the FBI denies any illegal wiretapping&#39;.  There is a fundamental and
-important difference, and it make me sad that the journalists are
-unable to grasp it.&lt;/p&gt;
-
-&lt;p&gt;&lt;strong&gt;Update 2017-03-13:&lt;/strong&gt; Look like
-&lt;a href=&quot;https://theintercept.com/2017/03/13/rand-paul-is-right-nsa-routinely-monitors-americans-communications-without-warrants/&quot;&gt;The
-Intercept report that US Senator Rand Paul confirm what I state above&lt;/a&gt;.&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;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;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;p&gt;Yesterday I used it to figure out which packages support the STL 3D
+format:&lt;/p&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;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;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;

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

-               <title>Norwegian Bokmål translation of The Debian Administrator&#39;s Handbook complete, proofreading in progress</title>
-               <link>http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_translation_of_The_Debian_Administrator_s_Handbook_complete__proofreading_in_progress.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_translation_of_The_Debian_Administrator_s_Handbook_complete__proofreading_in_progress.html</guid>
-                <pubDate>Fri, 3 Mar 2017 14:50:00 +0100</pubDate>
-               <description>&lt;p&gt;For almost a year now, we have been working on making a Norwegian
-Bokmål edition of &lt;a href=&quot;https://debian-handbook.info/&quot;&gt;The Debian
-Administrator&#39;s Handbook&lt;/a&gt;.  Now, thanks to the tireless effort of
-Ole-Erik, Ingrid and Andreas, the initial translation is complete, and
-we are working on the proof reading to ensure consistent language and
-use of correct computer science terms.  The plan is to make the book
-available on paper, as well as in electronic form.  For that to
-happen, the proof reading must be completed and all the figures need
-to be translated.  If you want to help out, get in touch.&lt;/p&gt;
-
-&lt;p&gt;&lt;a href=&quot;http://people.skolelinux.org/pere/debian-handbook/debian-handbook-nb-NO.pdf&quot;&gt;A
-
-fresh PDF edition&lt;/a&gt; in A4 format (the final book will have smaller
-pages) of the book created every morning is available for
-proofreading.  If you find any errors, please
-&lt;a href=&quot;https://hosted.weblate.org/projects/debian-handbook/&quot;&gt;visit
-Weblate and correct the error&lt;/a&gt;.  The
-&lt;a href=&quot;http://l.github.io/debian-handbook/stat/nb-NO/index.html&quot;&gt;state
-of the translation including figures&lt;/a&gt; is a useful source for those
-provide Norwegian bokmål screen shots and figures.&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;
+#!/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;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;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;

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

-               <title>Unlimited randomness with the ChaosKey?</title>
-               <link>http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html</guid>
-                <pubDate>Wed, 1 Mar 2017 20:50:00 +0100</pubDate>
-               <description>&lt;p&gt;A few days ago I ordered a small batch of
-&lt;a href=&quot;http://altusmetrum.org/ChaosKey/&quot;&gt;the ChaosKey&lt;/a&gt;, a small
-USB dongle for generating entropy created by Bdale Garbee and Keith
-Packard.  Yesterday it arrived, and I am very happy to report that it
-work great!  According to its designers, to get it to work out of the
-box, you need the Linux kernel version 4.1 or later.  I tested on a
-Debian Stretch machine (kernel version 4.9), and there it worked just
-fine, increasing the available entropy very quickly.  I wrote a small
-test oneliner to test.  It first print the current entropy level,
-drain /dev/random, and then print the entropy level for five seconds.
-Here is the situation without the ChaosKey inserted:&lt;/p&gt;
-
-&lt;blockquote&gt;&lt;pre&gt;
-% cat /proc/sys/kernel/random/entropy_avail; \
-  dd bs=1M if=/dev/random of=/dev/null count=1; \
-  for n in $(seq 1 5); do \
-     cat /proc/sys/kernel/random/entropy_avail; \
-     sleep 1; \
-  done
-300
-0+1 oppføringer inn
-0+1 oppføringer ut
-28 byte kopiert, 0,000264565 s, 106 kB/s
-4
-8
-12
-17
-21
-%
-&lt;/pre&gt;&lt;/blockquote&gt;
-
-&lt;p&gt;The entropy level increases by 3-4 every second.  In such case any
-application requiring random bits (like a HTTPS enabled web server)
-will halt and wait for more entrpy.  And here is the situation with
-the ChaosKey inserted:&lt;/p&gt;
-
-&lt;blockquote&gt;&lt;pre&gt;
-% cat /proc/sys/kernel/random/entropy_avail; \
-  dd bs=1M if=/dev/random of=/dev/null count=1; \
-  for n in $(seq 1 5); do \
-     cat /proc/sys/kernel/random/entropy_avail; \
-     sleep 1; \
-  done
-1079
-0+1 oppføringer inn
-0+1 oppføringer ut
-104 byte kopiert, 0,000487647 s, 213 kB/s
-433
-1028
-1031
-1035
-1038
-%
-&lt;/pre&gt;&lt;/blockquote&gt;
-
-&lt;p&gt;Quite the difference. :) I bought a few more than I need, in case
-someone want to buy one here in Norway. :)&lt;/p&gt;
-
-&lt;p&gt;Update: The dongle was presented at Debconf last year.  You might
-find &lt;a href=&quot;https://debconf16.debconf.org/talks/94/&quot;&gt;the talk
-recording illuminating&lt;/a&gt;.  It explains exactly what the source of
-randomness is, if you are unable to spot it from the schema drawing
-available from the ChaosKey web site linked at the start of this blog
-post.&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;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;

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-               <title>Detect OOXML files with undefined behaviour?</title>
-               <link>http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</guid>
-                <pubDate>Tue, 21 Feb 2017 00:20:00 +0100</pubDate>
-               <description>&lt;p&gt;I just noticed
-&lt;a href=&quot;http://www.arkivrad.no/aktuelt/riksarkivarens-forskrift-pa-horing&quot;&gt;the
-new Norwegian proposal for archiving rules in the goverment&lt;/a&gt; list
-&lt;a href=&quot;http://www.ecma-international.org/publications/standards/Ecma-376.htm&quot;&gt;ECMA-376&lt;/a&gt;
-/ ISO/IEC 29500 (aka OOXML) as valid formats to put in long term
-storage.  Luckily such files will only be accepted based on
-pre-approval from the National Archive.  Allowing OOXML files to be
-used for long term storage might seem like a good idea as long as we
-forget that there are plenty of ways for a &quot;valid&quot; OOXML document to
-have content with no defined interpretation in the standard, which
-lead to a question and an idea.&lt;/p&gt;
-
-&lt;p&gt;Is there any tool to detect if a OOXML document depend on such
-undefined behaviour?  It would be useful for the National Archive (and
-anyone else interested in verifying that a document is well defined)
-to have such tool available when considering to approve the use of
-OOXML.  I&#39;m aware of the
-&lt;a href=&quot;https://github.com/arlm/officeotron/&quot;&gt;officeotron OOXML
-validator&lt;/a&gt;, but do not know how complete it is nor if it will
-report use of undefined behaviour.  Are there other similar tools
-available?  Please send me an email if you know of any such tool.&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;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;

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