<atom:link href="http://people.skolelinux.org/pere/blog/index.rss" rel="self" type="application/rss+xml" />
<item>
- <title>Legal to share more than 3000 movies listed on IMDB?</title>
- <link>http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_3000_movies_listed_on_IMDB_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Legal_to_share_more_than_3000_movies_listed_on_IMDB_.html</guid>
- <pubDate>Sat, 18 Nov 2017 21:20:00 +0100</pubDate>
- <description><p>A month ago, I blogged about my work to
-<a href="http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html">automatically
-check the copyright status of IMDB entries</a>, and try to count the
-number of movies listed in IMDB that is legal to distribute on the
-Internet. I have continued to look for good data sources, and
-identified a few more. The code used to extract information from
-various data sources is available in
-<a href="https://github.com/petterreinholdtsen/public-domain-free-imdb">a
-git repository</a>, currently available from github.</p>
-
-<p>So far I have identified 3186 unique IMDB title IDs. To gain
-better understanding of the structure of the data set, I created a
-histogram of the year associated with each movie (typically release
-year). It is interesting to notice where the peaks and dips in the
-graph are located. I wonder why they are placed there. I suspect
-World War II caused the dip around 1940, but what caused the peak
-around 2010?</p>
-
-<p align="center"><img src="http://people.skolelinux.org/pere/blog/images/2017-11-18-verk-i-det-fri-filmer.png" /></p>
-
-<p>I've so far identified ten sources for IMDB title IDs for movies in
-the public domain or with a free license. This is the statistics
-reported when running 'make stats' in the git repository:</p>
-
-<pre>
- 249 entries ( 6 unique) with and 288 without IMDB title ID in free-movies-archive-org-butter.json
- 2301 entries ( 540 unique) with and 0 without IMDB title ID in free-movies-archive-org-wikidata.json
- 830 entries ( 29 unique) with and 0 without IMDB title ID in free-movies-icheckmovies-archive-mochard.json
- 2109 entries ( 377 unique) with and 0 without IMDB title ID in free-movies-imdb-pd.json
- 291 entries ( 122 unique) with and 0 without IMDB title ID in free-movies-letterboxd-pd.json
- 144 entries ( 135 unique) with and 0 without IMDB title ID in free-movies-manual.json
- 350 entries ( 1 unique) with and 801 without IMDB title ID in free-movies-publicdomainmovies.json
- 4 entries ( 0 unique) with and 124 without IMDB title ID in free-movies-publicdomainreview.json
- 698 entries ( 119 unique) with and 118 without IMDB title ID in free-movies-publicdomaintorrents.json
- 8 entries ( 8 unique) with and 196 without IMDB title ID in free-movies-vodo.json
- 3186 unique IMDB title IDs in total
-</pre>
-
-<p>The entries without IMDB title ID are candidates to increase the
-data set, but might equally well be duplicates of entries already
-listed with IMDB title ID in one of the other sources, or represent
-movies that lack a IMDB title ID. I've seen examples of all these
-situations when peeking at the entries without IMDB title ID. Based
-on these data sources, the lower bound for movies listed in IMDB that
-are legal to distribute on the Internet is between 3186 and 4713.
-
-<p>It would be great for improving the accuracy of this measurement,
-if the various sources added IMDB title ID to their metadata. I have
-tried to reach the people behind the various sources to ask if they
-are interested in doing this, without any replies so far. Perhaps you
-can help me get in touch with the people behind VODO, Public Domain
-Torrents, Public Domain Movies and Public Domain Review to try to
-convince them to add more metadata to their movie entries?</p>
-
-<p>Another way you could help is by adding pages to Wikipedia about
-movies that are legal to distribute on the Internet. If such page
-exist and include a link to both IMDB and The Internet Archive, the
-script used to generate free-movies-archive-org-wikidata.json should
-pick up the mapping as soon as wikidata is updates.</p>
+ <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><p>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.</p>
+
+<p>I had a look at several approaches, for example
+<a href="https://github.com/mfoetsch/dlna_live_streaming">using uPnP
+DLNA as described in 2011</a>, 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.</p>
+
+<p>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.</p>
+
+<p>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.</p>
+
+<p>I did not spend much time investigating codeces. I combined the
+rtp and rtsp recipes from
+<a href="https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/">the
+VLC Streaming HowTo/Command Line Examples</a>, and was able to get
+this working on the desktop/streaming end.</p>
+
+<blockquote><pre>
+vlc screen:// --sout \
+ '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}'
+</pre></blockquote>
+
+<p>I ssh-ed into my Kodi box and created a file like this with the
+same IP address:</p>
+
+<blockquote><pre>
+echo rtsp://192.168.11.4:8080/test.sdp \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>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.m4u 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. :)</p>
+
+<p>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.</p>
+
+<p><strong>Update 2018-07-12</strong>: Johannes Schauer send me a few
+succestions and reminded me about an important step. The "screen:"
+input source is only available once the vlc-plugin-access-extra
+package is installed on Debian. Without it, you will see this error
+message: "VLC is unable to open the MRL 'screen://'. Check the log
+for details." 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
+
+<blockquote><pre>
+cvlc screen:// --sout \
+ '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}'
+</pre></blockquote>
+
+<p>and this on the Kodi end<p>
+
+<blockquote><pre>
+echo rtsp://192.168.11.4:8080/ \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>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've tried to change the vb and ab
+parameters to use more bandwidth, but it did not make a
+difference.</p>
+
+<p>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:
+
+<blockquote><pre>
+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=0 auto-multicast=1 sync=0 \
+ pulsesrc device=$(pactl list | grep -A2 'Source #' | \
+ grep 'Name: .*\.monitor$' | cut -d" " -f2|head -1) ! \
+ audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
+</pre></blockquote>
+
+<p>and this on the Kodi end<p>
+
+<blockquote><pre>
+echo udp://@239.255.0.1:1234 \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>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=0 setting, which limit the multicast packages to the
+local network. If the value is increased, your screen will be
+broadcasted further, one network "hop" for each increase (read up on
+multicast to learn more. :)!</p>
+
+<p>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.</p>
+
+<blockquote><pre>
+cvlc screen:// --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}'
+</pre></blockquote>
+
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>Some notes on fault tolerant storage systems</title>
- <link>http://people.skolelinux.org/pere/blog/Some_notes_on_fault_tolerant_storage_systems.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Some_notes_on_fault_tolerant_storage_systems.html</guid>
- <pubDate>Wed, 1 Nov 2017 15:35:00 +0100</pubDate>
- <description><p>If you care about how fault tolerant your storage is, you might
-find these articles and papers interesting. They have formed how I
-think of when designing a storage system.</p>
-
-<ul>
-
-<li>USENIX :login; <a
-href="https://www.usenix.org/publications/login/summer2017/ganesan">Redundancy
-Does Not Imply Fault Tolerance. Analysis of Distributed Storage
-Reactions to Single Errors and Corruptions</a> by Aishwarya Ganesan,
-Ramnatthan Alagappan, Andrea C. Arpaci-Dusseau, and Remzi
-H. Arpaci-Dusseau</li>
-
-<li>ZDNet
-<a href="http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/">Why
-RAID 5 stops working in 2009</a> by Robin Harris</li>
-
-<li>ZDNet
-<a href="http://www.zdnet.com/article/why-raid-6-stops-working-in-2019/">Why
-RAID 6 stops working in 2019</a> by Robin Harris</li>
-
-<li>USENIX FAST'07
-<a href="http://research.google.com/archive/disk_failures.pdf">Failure
-Trends in a Large Disk Drive Population</a> by Eduardo Pinheiro,
-Wolf-Dietrich Weber and Luiz André Barroso</li>
-
-<li>USENIX ;login: <a
-href="https://www.usenix.org/system/files/login/articles/hughes12-04.pdf">Data
-Integrity. Finding Truth in a World of Guesses and Lies</a> by Doug
-Hughes</li>
-
-<li>USENIX FAST'08
-<a href="https://www.usenix.org/events/fast08/tech/full_papers/bairavasundaram/bairavasundaram_html/">An
-Analysis of Data Corruption in the Storage Stack</a> by
-L. N. Bairavasundaram, G. R. Goodson, B. Schroeder, A. C.
-Arpaci-Dusseau, and R. H. Arpaci-Dusseau</li>
-
-<li>USENIX FAST'07 <a
-href="https://www.usenix.org/legacy/events/fast07/tech/schroeder/schroeder_html/">Disk
-failures in the real world: what does an MTTF of 1,000,000 hours mean
-to you?</a> by B. Schroeder and G. A. Gibson.</li>
-
-<li>USENIX ;login: <a
-href="https://www.usenix.org/events/fast08/tech/full_papers/jiang/jiang_html/">Are
-Disks the Dominant Contributor for Storage Failures? A Comprehensive
-Study of Storage Subsystem Failure Characteristics</a> by Weihang
-Jiang, Chongfeng Hu, Yuanyuan Zhou, and Arkady Kanevsky</li>
-
-<li>SIGMETRICS 2007
-<a href="http://research.cs.wisc.edu/adsl/Publications/latent-sigmetrics07.pdf">An
-analysis of latent sector errors in disk drives</a> by
-L. N. Bairavasundaram, G. R. Goodson, S. Pasupathy, and J. Schindler</li>
-
-</ul>
-
-<p>Several of these research papers are based on data collected from
-hundred thousands or millions of disk, and their findings are eye
-opening. The short story is simply do not implicitly trust RAID or
-redundant storage systems. Details matter. And unfortunately there
-are few options on Linux addressing all the identified issues. Both
-ZFS and Btrfs are doing a fairly good job, but have legal and
-practical issues on their own. I wonder how cluster file systems like
-Ceph do in this regard. After all, there is an old saying, you know
-you have a distributed system when the crash of a computer you have
-never heard of stops you from getting any work done. The same holds
-true if fault tolerance do not work.</p>
-
-<p>Just remember, in the end, it do not matter how redundant, or how
-fault tolerant your storage is, if you do not continuously monitor its
-status to detect and replace failed disks.</p>
+ <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><p>Five years ago,
+<a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html">I
+measured what the most supported MIME type in Debian was</a>, 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:
+
+<p><strong>Debian Unstable:</strong></p>
+
+<pre>
+ 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
+</pre>
+
+<p>The list was created like this using a sid chroot: "cat
+/var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk '/^
+- \S+\/\S+$/ {print $2 }' | sort | uniq -c | sort -nr | head -20"</p>
+
+<p>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 "file --mime &lt;filename&gt;", and then
+look up all packages announcing support for this format in their
+AppStream metadata (XML or .desktop file) using "appstreamcli
+what-provides mimetype &lt;mime-type&gt;. For example if you, like
+me, want to know which packages support inode/directory, you can get a
+list like this:</p>
+
+<p><blockquote><pre>
+% 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
+%
+</pre></blockquote></p>
+
+<p>Using the same method, I can quickly discover that the Sketchup file
+format is not yet supported by any package in Debian:</p>
+
+<p><blockquote><pre>
+% appstreamcli what-provides mimetype application/vnd.sketchup.skp
+Could not find component providing 'mimetype::application/vnd.sketchup.skp'.
+%
+</pre></blockquote></p>
+
+<p>Yesterday I used it to figure out which packages support the STL 3D
+format:</p>
+
+<p><blockquote><pre>
+% appstreamcli what-provides mimetype application/sla|grep Package
+Package: cura
+Package: meshlab
+Package: printrun
+%
+</pre></blockquote></p>
+
+<p>PS: A new version of Cura was uploaded to Debian yesterday.</p>
+
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>Web services for writing academic LaTeX papers as a team</title>
- <link>http://people.skolelinux.org/pere/blog/Web_services_for_writing_academic_LaTeX_papers_as_a_team.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Web_services_for_writing_academic_LaTeX_papers_as_a_team.html</guid>
- <pubDate>Tue, 31 Oct 2017 21:00:00 +0100</pubDate>
- <description><p>I was surprised today to learn that a friend in academia did not
-know there are easily available web services available for writing
-LaTeX documents as a team. I thought it was common knowledge, but to
-make sure at least my readers are aware of it, I would like to mention
-these useful services for writing LaTeX documents. Some of them even
-provide a WYSIWYG editor to ease writing even further.</p>
-
-<p>There are two commercial services available,
-<a href="https://sharelatex.com">ShareLaTeX</a> and
-<a href="https://overleaf.com">Overleaf</a>. They are very easy to
-use. Just start a new document, select which publisher to write for
-(ie which LaTeX style to use), and start writing. Note, these two
-have announced their intention to join forces, so soon it will only be
-one joint service. I've used both for different documents, and they
-work just fine. While
-<a href="https://github.com/sharelatex/sharelatex">ShareLaTeX is free
-software</a>, while the latter is not. According to <a
-href="https://www.overleaf.com/help/17-is-overleaf-open-source">a
-announcement from Overleaf</a>, they plan to keep the ShareLaTeX code
-base maintained as free software.</p>
-
-But these two are not the only alternatives.
-<a href="https://app.fiduswriter.org/">Fidus Writer</a> is another free
-software solution with <a href="https://github.com/fiduswriter">the
-source available on github</a>. I have not used it myself. Several
-others can be found on the nice
-<a href="https://alternativeto.net/software/sharelatex/">alterntiveTo
-web service</a>.
-
-<p>If you like Google Docs or Etherpad, but would like to write
-documents in LaTeX, you should check out these services. You can even
-host your own, if you want to. :)</p>
+ <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><p>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 'apt upgrade'. I normally
+would resolve the issue by doing 'apt install &lt;somepackages&gt;' 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 'apt-in-chunks':</p>
+
+<p><blockquote><pre>
+#!/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 [ "$1" ]; then
+ grep -v "$1"
+ else
+ cat
+ fi
+}
+for p in $(apt list --upgradable | ignore "$@" |cut -d/ -f1 | grep -v '^Listing...'); do
+ echo "Upgrading $p"
+ apt clean
+ apt install --download-only -y $p
+ for f in /var/cache/apt/archives/*.deb; do
+ if [ -e "$f" ]; then
+ dpkg -i /var/cache/apt/archives/*.deb
+ break
+ fi
+ done
+done
+</pre></blockquote></p>
+
+<p>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
+'apt install -f' 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.</p>
+
+<p>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
+'ghc', but I have run into other large packages causing similar
+problems earlier (like TeX).</p>
+
+<p>Update 2018-07-08: Thanks to Paul Wise, I am aware of two
+alternative ways to handle this. The "unattended-upgrades
+--minimal-upgrade-steps" 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, "aptutude upgrade" can upgrade single packages, thus avoiding
+the need for using "dpkg -i" in the script above.</p>
+
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>Locating IMDB IDs of movies in the Internet Archive using Wikidata</title>
- <link>http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html</guid>
- <pubDate>Wed, 25 Oct 2017 12:20:00 +0200</pubDate>
- <description><p>Recently, I needed to automatically check the copyright status of a
-set of <a href="http://www.imdb.com/">The Internet Movie database
-(IMDB)</a> entries, to figure out which one of the movies they refer
-to can be freely distributed on the Internet. This proved to be
-harder than it sounds. IMDB for sure list movies without any
-copyright protection, where the copyright protection has expired or
-where the movie is lisenced using a permissive license like one from
-Creative Commons. These are mixed with copyright protected movies,
-and there seem to be no way to separate these classes of movies using
-the information in IMDB.</p>
-
-<p>First I tried to look up entries manually in IMDB,
-<a href="https://www.wikipedia.org/">Wikipedia</a> and
-<a href="https://www.archive.org/">The Internet Archive</a>, to get a
-feel how to do this. It is hard to know for sure using these sources,
-but it should be possible to be reasonable confident a movie is "out
-of copyright" with a few hours work per movie. As I needed to check
-almost 20,000 entries, this approach was not sustainable. I simply
-can not work around the clock for about 6 years to check this data
-set.</p>
-
-<p>I asked the people behind The Internet Archive if they could
-introduce a new metadata field in their metadata XML for IMDB ID, but
-was told that they leave it completely to the uploaders to update the
-metadata. Some of the metadata entries had IMDB links in the
-description, but I found no way to download all metadata files in bulk
-to locate those ones and put that approach aside.</p>
-
-<p>In the process I noticed several Wikipedia articles about movies
-had links to both IMDB and The Internet Archive, and it occured to me
-that I could use the Wikipedia RDF data set to locate entries with
-both, to at least get a lower bound on the number of movies on The
-Internet Archive with a IMDB ID. This is useful based on the
-assumption that movies distributed by The Internet Archive can be
-legally distributed on the Internet. With some help from the RDF
-community (thank you DanC), I was able to come up with this query to
-pass to <a href="https://query.wikidata.org/">the SPARQL interface on
-Wikidata</a>:
-
-<p><pre>
-SELECT ?work ?imdb ?ia ?when ?label
-WHERE
-{
- ?work wdt:P31/wdt:P279* wd:Q11424.
- ?work wdt:P345 ?imdb.
- ?work wdt:P724 ?ia.
- OPTIONAL {
- ?work wdt:P577 ?when.
- ?work rdfs:label ?label.
- FILTER(LANG(?label) = "en").
- }
-}
-</pre></p>
-
-<p>If I understand the query right, for every film entry anywhere in
-Wikpedia, it will return the IMDB ID and The Internet Archive ID, and
-when the movie was released and its English title, if either or both
-of the latter two are available. At the moment the result set contain
-2338 entries. Of course, it depend on volunteers including both
-correct IMDB and The Internet Archive IDs in the wikipedia articles
-for the movie. It should be noted that the result will include
-duplicates if the movie have entries in several languages. There are
-some bogus entries, either because The Internet Archive ID contain a
-typo or because the movie is not available from The Internet Archive.
-I did not verify the IMDB IDs, as I am unsure how to do that
-automatically.</p>
-
-<p>I wrote a small python script to extract the data set from Wikidata
-and check if the XML metadata for the movie is available from The
-Internet Archive, and after around 1.5 hour it produced a list of 2097
-free movies and their IMDB ID. In total, 171 entries in Wikidata lack
-the refered Internet Archive entry. I assume the 70 "disappearing"
-entries (ie 2338-2097-171) are duplicate entries.</p>
-
-<p>This is not too bad, given that The Internet Archive report to
-contain <a href="https://archive.org/details/feature_films">5331
-feature films</a> at the moment, but it also mean more than 3000
-movies are missing on Wikipedia or are missing the pair of references
-on Wikipedia.</p>
-
-<p>I was curious about the distribution by release year, and made a
-little graph to show how the amount of free movies is spread over the
-years:<p>
-
-<p><img src="http://people.skolelinux.org/pere/blog/images/2017-10-25-verk-i-det-fri-filmer.png"></p>
-
-<p>I expect the relative distribution of the remaining 3000 movies to
-be similar.</p>
-
-<p>If you want to help, and want to ensure Wikipedia can be used to
-cross reference The Internet Archive and The Internet Movie Database,
-please make sure entries like this are listed under the "External
-links" heading on the Wikipedia article for the movie:</p>
-
-<p><pre>
-* {{Internet Archive film|id=FightingLady}}
-* {{IMDb title|id=0036823|title=The Fighting Lady}}
-</pre></p>
-
-<p>Please verify the links on the final page, to make sure you did not
-introduce a typo.</p>
-
-<p>Here is the complete list, if you want to correct the 171
-identified Wikipedia entries with broken links to The Internet
-Archive: <a href="http://www.wikidata.org/entity/Q1140317">Q1140317</a>,
-<a href="http://www.wikidata.org/entity/Q458656">Q458656</a>,
-<a href="http://www.wikidata.org/entity/Q458656">Q458656</a>,
-<a href="http://www.wikidata.org/entity/Q470560">Q470560</a>,
-<a href="http://www.wikidata.org/entity/Q743340">Q743340</a>,
-<a href="http://www.wikidata.org/entity/Q822580">Q822580</a>,
-<a href="http://www.wikidata.org/entity/Q480696">Q480696</a>,
-<a href="http://www.wikidata.org/entity/Q128761">Q128761</a>,
-<a href="http://www.wikidata.org/entity/Q1307059">Q1307059</a>,
-<a href="http://www.wikidata.org/entity/Q1335091">Q1335091</a>,
-<a href="http://www.wikidata.org/entity/Q1537166">Q1537166</a>,
-<a href="http://www.wikidata.org/entity/Q1438334">Q1438334</a>,
-<a href="http://www.wikidata.org/entity/Q1479751">Q1479751</a>,
-<a href="http://www.wikidata.org/entity/Q1497200">Q1497200</a>,
-<a href="http://www.wikidata.org/entity/Q1498122">Q1498122</a>,
-<a href="http://www.wikidata.org/entity/Q865973">Q865973</a>,
-<a href="http://www.wikidata.org/entity/Q834269">Q834269</a>,
-<a href="http://www.wikidata.org/entity/Q841781">Q841781</a>,
-<a href="http://www.wikidata.org/entity/Q841781">Q841781</a>,
-<a href="http://www.wikidata.org/entity/Q1548193">Q1548193</a>,
-<a href="http://www.wikidata.org/entity/Q499031">Q499031</a>,
-<a href="http://www.wikidata.org/entity/Q1564769">Q1564769</a>,
-<a href="http://www.wikidata.org/entity/Q1585239">Q1585239</a>,
-<a href="http://www.wikidata.org/entity/Q1585569">Q1585569</a>,
-<a href="http://www.wikidata.org/entity/Q1624236">Q1624236</a>,
-<a href="http://www.wikidata.org/entity/Q4796595">Q4796595</a>,
-<a href="http://www.wikidata.org/entity/Q4853469">Q4853469</a>,
-<a href="http://www.wikidata.org/entity/Q4873046">Q4873046</a>,
-<a href="http://www.wikidata.org/entity/Q915016">Q915016</a>,
-<a href="http://www.wikidata.org/entity/Q4660396">Q4660396</a>,
-<a href="http://www.wikidata.org/entity/Q4677708">Q4677708</a>,
-<a href="http://www.wikidata.org/entity/Q4738449">Q4738449</a>,
-<a href="http://www.wikidata.org/entity/Q4756096">Q4756096</a>,
-<a href="http://www.wikidata.org/entity/Q4766785">Q4766785</a>,
-<a href="http://www.wikidata.org/entity/Q880357">Q880357</a>,
-<a href="http://www.wikidata.org/entity/Q882066">Q882066</a>,
-<a href="http://www.wikidata.org/entity/Q882066">Q882066</a>,
-<a href="http://www.wikidata.org/entity/Q204191">Q204191</a>,
-<a href="http://www.wikidata.org/entity/Q204191">Q204191</a>,
-<a href="http://www.wikidata.org/entity/Q1194170">Q1194170</a>,
-<a href="http://www.wikidata.org/entity/Q940014">Q940014</a>,
-<a href="http://www.wikidata.org/entity/Q946863">Q946863</a>,
-<a href="http://www.wikidata.org/entity/Q172837">Q172837</a>,
-<a href="http://www.wikidata.org/entity/Q573077">Q573077</a>,
-<a href="http://www.wikidata.org/entity/Q1219005">Q1219005</a>,
-<a href="http://www.wikidata.org/entity/Q1219599">Q1219599</a>,
-<a href="http://www.wikidata.org/entity/Q1643798">Q1643798</a>,
-<a href="http://www.wikidata.org/entity/Q1656352">Q1656352</a>,
-<a href="http://www.wikidata.org/entity/Q1659549">Q1659549</a>,
-<a href="http://www.wikidata.org/entity/Q1660007">Q1660007</a>,
-<a href="http://www.wikidata.org/entity/Q1698154">Q1698154</a>,
-<a href="http://www.wikidata.org/entity/Q1737980">Q1737980</a>,
-<a href="http://www.wikidata.org/entity/Q1877284">Q1877284</a>,
-<a href="http://www.wikidata.org/entity/Q1199354">Q1199354</a>,
-<a href="http://www.wikidata.org/entity/Q1199354">Q1199354</a>,
-<a href="http://www.wikidata.org/entity/Q1199451">Q1199451</a>,
-<a href="http://www.wikidata.org/entity/Q1211871">Q1211871</a>,
-<a href="http://www.wikidata.org/entity/Q1212179">Q1212179</a>,
-<a href="http://www.wikidata.org/entity/Q1238382">Q1238382</a>,
-<a href="http://www.wikidata.org/entity/Q4906454">Q4906454</a>,
-<a href="http://www.wikidata.org/entity/Q320219">Q320219</a>,
-<a href="http://www.wikidata.org/entity/Q1148649">Q1148649</a>,
-<a href="http://www.wikidata.org/entity/Q645094">Q645094</a>,
-<a href="http://www.wikidata.org/entity/Q5050350">Q5050350</a>,
-<a href="http://www.wikidata.org/entity/Q5166548">Q5166548</a>,
-<a href="http://www.wikidata.org/entity/Q2677926">Q2677926</a>,
-<a href="http://www.wikidata.org/entity/Q2698139">Q2698139</a>,
-<a href="http://www.wikidata.org/entity/Q2707305">Q2707305</a>,
-<a href="http://www.wikidata.org/entity/Q2740725">Q2740725</a>,
-<a href="http://www.wikidata.org/entity/Q2024780">Q2024780</a>,
-<a href="http://www.wikidata.org/entity/Q2117418">Q2117418</a>,
-<a href="http://www.wikidata.org/entity/Q2138984">Q2138984</a>,
-<a href="http://www.wikidata.org/entity/Q1127992">Q1127992</a>,
-<a href="http://www.wikidata.org/entity/Q1058087">Q1058087</a>,
-<a href="http://www.wikidata.org/entity/Q1070484">Q1070484</a>,
-<a href="http://www.wikidata.org/entity/Q1080080">Q1080080</a>,
-<a href="http://www.wikidata.org/entity/Q1090813">Q1090813</a>,
-<a href="http://www.wikidata.org/entity/Q1251918">Q1251918</a>,
-<a href="http://www.wikidata.org/entity/Q1254110">Q1254110</a>,
-<a href="http://www.wikidata.org/entity/Q1257070">Q1257070</a>,
-<a href="http://www.wikidata.org/entity/Q1257079">Q1257079</a>,
-<a href="http://www.wikidata.org/entity/Q1197410">Q1197410</a>,
-<a href="http://www.wikidata.org/entity/Q1198423">Q1198423</a>,
-<a href="http://www.wikidata.org/entity/Q706951">Q706951</a>,
-<a href="http://www.wikidata.org/entity/Q723239">Q723239</a>,
-<a href="http://www.wikidata.org/entity/Q2079261">Q2079261</a>,
-<a href="http://www.wikidata.org/entity/Q1171364">Q1171364</a>,
-<a href="http://www.wikidata.org/entity/Q617858">Q617858</a>,
-<a href="http://www.wikidata.org/entity/Q5166611">Q5166611</a>,
-<a href="http://www.wikidata.org/entity/Q5166611">Q5166611</a>,
-<a href="http://www.wikidata.org/entity/Q324513">Q324513</a>,
-<a href="http://www.wikidata.org/entity/Q374172">Q374172</a>,
-<a href="http://www.wikidata.org/entity/Q7533269">Q7533269</a>,
-<a href="http://www.wikidata.org/entity/Q970386">Q970386</a>,
-<a href="http://www.wikidata.org/entity/Q976849">Q976849</a>,
-<a href="http://www.wikidata.org/entity/Q7458614">Q7458614</a>,
-<a href="http://www.wikidata.org/entity/Q5347416">Q5347416</a>,
-<a href="http://www.wikidata.org/entity/Q5460005">Q5460005</a>,
-<a href="http://www.wikidata.org/entity/Q5463392">Q5463392</a>,
-<a href="http://www.wikidata.org/entity/Q3038555">Q3038555</a>,
-<a href="http://www.wikidata.org/entity/Q5288458">Q5288458</a>,
-<a href="http://www.wikidata.org/entity/Q2346516">Q2346516</a>,
-<a href="http://www.wikidata.org/entity/Q5183645">Q5183645</a>,
-<a href="http://www.wikidata.org/entity/Q5185497">Q5185497</a>,
-<a href="http://www.wikidata.org/entity/Q5216127">Q5216127</a>,
-<a href="http://www.wikidata.org/entity/Q5223127">Q5223127</a>,
-<a href="http://www.wikidata.org/entity/Q5261159">Q5261159</a>,
-<a href="http://www.wikidata.org/entity/Q1300759">Q1300759</a>,
-<a href="http://www.wikidata.org/entity/Q5521241">Q5521241</a>,
-<a href="http://www.wikidata.org/entity/Q7733434">Q7733434</a>,
-<a href="http://www.wikidata.org/entity/Q7736264">Q7736264</a>,
-<a href="http://www.wikidata.org/entity/Q7737032">Q7737032</a>,
-<a href="http://www.wikidata.org/entity/Q7882671">Q7882671</a>,
-<a href="http://www.wikidata.org/entity/Q7719427">Q7719427</a>,
-<a href="http://www.wikidata.org/entity/Q7719444">Q7719444</a>,
-<a href="http://www.wikidata.org/entity/Q7722575">Q7722575</a>,
-<a href="http://www.wikidata.org/entity/Q2629763">Q2629763</a>,
-<a href="http://www.wikidata.org/entity/Q2640346">Q2640346</a>,
-<a href="http://www.wikidata.org/entity/Q2649671">Q2649671</a>,
-<a href="http://www.wikidata.org/entity/Q7703851">Q7703851</a>,
-<a href="http://www.wikidata.org/entity/Q7747041">Q7747041</a>,
-<a href="http://www.wikidata.org/entity/Q6544949">Q6544949</a>,
-<a href="http://www.wikidata.org/entity/Q6672759">Q6672759</a>,
-<a href="http://www.wikidata.org/entity/Q2445896">Q2445896</a>,
-<a href="http://www.wikidata.org/entity/Q12124891">Q12124891</a>,
-<a href="http://www.wikidata.org/entity/Q3127044">Q3127044</a>,
-<a href="http://www.wikidata.org/entity/Q2511262">Q2511262</a>,
-<a href="http://www.wikidata.org/entity/Q2517672">Q2517672</a>,
-<a href="http://www.wikidata.org/entity/Q2543165">Q2543165</a>,
-<a href="http://www.wikidata.org/entity/Q426628">Q426628</a>,
-<a href="http://www.wikidata.org/entity/Q426628">Q426628</a>,
-<a href="http://www.wikidata.org/entity/Q12126890">Q12126890</a>,
-<a href="http://www.wikidata.org/entity/Q13359969">Q13359969</a>,
-<a href="http://www.wikidata.org/entity/Q13359969">Q13359969</a>,
-<a href="http://www.wikidata.org/entity/Q2294295">Q2294295</a>,
-<a href="http://www.wikidata.org/entity/Q2294295">Q2294295</a>,
-<a href="http://www.wikidata.org/entity/Q2559509">Q2559509</a>,
-<a href="http://www.wikidata.org/entity/Q2559912">Q2559912</a>,
-<a href="http://www.wikidata.org/entity/Q7760469">Q7760469</a>,
-<a href="http://www.wikidata.org/entity/Q6703974">Q6703974</a>,
-<a href="http://www.wikidata.org/entity/Q4744">Q4744</a>,
-<a href="http://www.wikidata.org/entity/Q7766962">Q7766962</a>,
-<a href="http://www.wikidata.org/entity/Q7768516">Q7768516</a>,
-<a href="http://www.wikidata.org/entity/Q7769205">Q7769205</a>,
-<a href="http://www.wikidata.org/entity/Q7769988">Q7769988</a>,
-<a href="http://www.wikidata.org/entity/Q2946945">Q2946945</a>,
-<a href="http://www.wikidata.org/entity/Q3212086">Q3212086</a>,
-<a href="http://www.wikidata.org/entity/Q3212086">Q3212086</a>,
-<a href="http://www.wikidata.org/entity/Q18218448">Q18218448</a>,
-<a href="http://www.wikidata.org/entity/Q18218448">Q18218448</a>,
-<a href="http://www.wikidata.org/entity/Q18218448">Q18218448</a>,
-<a href="http://www.wikidata.org/entity/Q6909175">Q6909175</a>,
-<a href="http://www.wikidata.org/entity/Q7405709">Q7405709</a>,
-<a href="http://www.wikidata.org/entity/Q7416149">Q7416149</a>,
-<a href="http://www.wikidata.org/entity/Q7239952">Q7239952</a>,
-<a href="http://www.wikidata.org/entity/Q7317332">Q7317332</a>,
-<a href="http://www.wikidata.org/entity/Q7783674">Q7783674</a>,
-<a href="http://www.wikidata.org/entity/Q7783704">Q7783704</a>,
-<a href="http://www.wikidata.org/entity/Q7857590">Q7857590</a>,
-<a href="http://www.wikidata.org/entity/Q3372526">Q3372526</a>,
-<a href="http://www.wikidata.org/entity/Q3372642">Q3372642</a>,
-<a href="http://www.wikidata.org/entity/Q3372816">Q3372816</a>,
-<a href="http://www.wikidata.org/entity/Q3372909">Q3372909</a>,
-<a href="http://www.wikidata.org/entity/Q7959649">Q7959649</a>,
-<a href="http://www.wikidata.org/entity/Q7977485">Q7977485</a>,
-<a href="http://www.wikidata.org/entity/Q7992684">Q7992684</a>,
-<a href="http://www.wikidata.org/entity/Q3817966">Q3817966</a>,
-<a href="http://www.wikidata.org/entity/Q3821852">Q3821852</a>,
-<a href="http://www.wikidata.org/entity/Q3420907">Q3420907</a>,
-<a href="http://www.wikidata.org/entity/Q3429733">Q3429733</a>,
-<a href="http://www.wikidata.org/entity/Q774474">Q774474</a></p>
+ <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><p>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
+<a href="https://en.wikipedia.org/wiki/Bremanger">Bremanger</a> i
+Norway, where
+<a href="https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/">the
+Bremanger Quarry</a> 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?</p>
+
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>A one-way wall on the border?</title>
- <link>http://people.skolelinux.org/pere/blog/A_one_way_wall_on_the_border_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_one_way_wall_on_the_border_.html</guid>
- <pubDate>Sat, 14 Oct 2017 22:10:00 +0200</pubDate>
- <description><p>I find it fascinating how many of the people being locked inside
-the proposed border wall between USA and Mexico support the idea. The
-proposal to keep Mexicans out reminds me of
-<a href="http://www.history.com/news/10-things-you-may-not-know-about-the-berlin-wall">the
-propaganda twist from the East Germany government</a> calling the wall
-the “Antifascist Bulwark” after erecting the Berlin Wall, claiming
-that the wall was erected to keep enemies from creeping into East
-Germany, while it was obvious to the people locked inside it that it
-was erected to keep the people from escaping.</p>
-
-<p>Do the people in USA supporting this wall really believe it is a
-one way wall, only keeping people on the outside from getting in,
-while not keeping people in the inside from getting out?</p>
+ <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><p>My movie playing setup involve <a href="https://kodi.tv/">Kodi</a>,
+<a href="https://openelec.tv">OpenELEC</a> (probably soon to be
+replaced with <a href="https://libreelec.tv/">LibreELEC</a>) 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, <a href="https://www.infocus.com/">InFocus</a>, 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
+<a href="https://github.com/petterreinholdtsen/infocus-projector-control">a
+small script to control the projector</a>. 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.</p>
+
+<p>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.</p>
+
+<p>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
+<a href="https://github.com/pyserial/pyserial">pyserial module</a> in
+the add-on. The long term solution is to make a "script" type
+pyserial module for Kodi, that can be pulled in as a dependency in
+Kodi. But until that in place, I embed it.</p>
+
+<p>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.
+
+<p>If this sound interesting to you, check out
+<a href="https://github.com/fredrik-eriksson/kodi_projcontrol">the
+project github repository</a>. 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.</p>
+
+<p>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.</p>
+
+<p>As usual, if you use Bitcoin and want to show your support of my
+activities, please send Bitcoin donations to my address
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>Generating 3D prints in Debian using Cura and Slic3r(-prusa)</title>
- <link>http://people.skolelinux.org/pere/blog/Generating_3D_prints_in_Debian_using_Cura_and_Slic3r__prusa_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Generating_3D_prints_in_Debian_using_Cura_and_Slic3r__prusa_.html</guid>
- <pubDate>Mon, 9 Oct 2017 10:50:00 +0200</pubDate>
- <description><p>At my nearby maker space,
-<a href="http://sonen.ifi.uio.no/">Sonen</a>, I heard the story that it
-was easier to generate gcode files for theyr 3D printers (Ultimake 2+)
-on Windows and MacOS X than Linux, because the software involved had
-to be manually compiled and set up on Linux while premade packages
-worked out of the box on Windows and MacOS X. I found this annoying,
-as the software involved,
-<a href="https://github.com/Ultimaker/Cura">Cura</a>, is free software
-and should be trivial to get up and running on Linux if someone took
-the time to package it for the relevant distributions. I even found
-<a href="https://bugs.debian.org/706656">a request for adding into
-Debian</a> from 2013, which had seem some activity over the years but
-never resulted in the software showing up in Debian. So a few days
-ago I offered my help to try to improve the situation.</p>
-
-<p>Now I am very happy to see that all the packages required by a
-working Cura in Debian are uploaded into Debian and waiting in the NEW
-queue for the ftpmasters to have a look. You can track the progress
-on
-<a href="https://qa.debian.org/developer.php?email=3dprinter-general%40lists.alioth.debian.org">the
-status page for the 3D printer team</a>.</p>
-
-<p>The uploaded packages are a bit behind upstream, and was uploaded
-now to get slots in <a href="https://ftp-master.debian.org/new.html">the NEW
-queue</a> while we work up updating the packages to the latest
-upstream version.</p>
-
-<p>On a related note, two competitors for Cura, which I found harder
-to use and was unable to configure correctly for Ultimaker 2+ in the
-short time I spent on it, are already in Debian. If you are looking
-for 3D printer "slicers" and want something already available in
-Debian, check out
-<a href="https://tracker.debian.org/pkg/slic3r">slic3r</a> and
-<a href="https://tracker.debian.org/pkg/slic3r-prusa">slic3r-prusa</a>.
-The latter is a fork of the former.</p>
+ <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><p>I <a href="https://no.wikipedia.org/wiki/VHS">VHS-kassettenes</a>
+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
+<a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK.html">skrevet</a>
+<a href="http://people.skolelinux.org/pere/blog/Hvordan_enkelt_laste_ned_filmer_fra_NRK_med_den__nye__l_sningen.html">om</a>
+<a href="http://people.skolelinux.org/pere/blog/Nedlasting_fra_NRK__som_Matroska_med_undertekster.html">før</a>.
+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.</p>
+
+<p>Sist jeg så på saken, i 2016, nevnte jeg at
+<a href="https://rg3.github.com/youtube-dl/">youtube-dl</a> 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 <a href="https://www.debian.org/">Debian</a>
+og <a href="https://www.ubuntu.com/">Ubuntu</a>, slik at en slipper å
+finne ut selv hvordan en skal få dem til å virke.</p>
+
+<p>For å laste ned et NRK-innslag med undertekster, og få den norske
+underteksten pakket inn i videofilen, så kan følgende kommando
+brukes:</p>
+
+<p><pre>
+youtube-dl --write-sub --sub-format ttml \
+ --convert-subtitles srt --embed-subs \
+ https://tv.nrk.no/serie/ramm-ferdig-gaa/MUHU11000316/27-04-2018
+</pre></p>
+
+<p>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 '--write-auto-sub',
+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.</p>
+
+<p>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
+<a href="http://people.skolelinux.org/pere/blog/Best___ikke_fortelle_noen_at_streaming_er_nedlasting___.html">vesensforskjellig
+å legge tilgjengelig for nedlasting og for streaming</a>, når det rent
+teknisk er samme sak.</p>
+
+<p>Programmet youtube-dl støtter også en rekke andre nettsteder, se
+prosjektoversikten for
+<a href="http://rg3.github.io/youtube-dl/supportedsites.html">en
+komplett liste</a>.</p>
</description>
</item>
<item>
- <title>Mangler du en skrue, eller har du en skrue løs?</title>
- <link>http://people.skolelinux.org/pere/blog/Mangler_du_en_skrue__eller_har_du_en_skrue_l_s_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Mangler_du_en_skrue__eller_har_du_en_skrue_l_s_.html</guid>
- <pubDate>Wed, 4 Oct 2017 09:40:00 +0200</pubDate>
- <description>Når jeg holder på med ulike prosjekter, så trenger jeg stadig ulike
-skruer. Det siste prosjektet jeg holder på med er å lage
-<a href="https://www.thingiverse.com/thing:676916">en boks til en
-HDMI-touch-skjerm</a> som skal brukes med Raspberry Pi. Boksen settes
-sammen med skruer og bolter, og jeg har vært i tvil om hvor jeg kan
-få tak i de riktige skruene. Clas Ohlson og Jernia i nærheten har
-sjelden hatt det jeg trenger. Men her om dagen fikk jeg et fantastisk
-tips for oss som bor i Oslo.
-<a href="http://www.zachskruer.no/">Zachariassen Jernvare AS</a> i
-<a href="http://www.openstreetmap.org/?mlat=59.93421&mlon=10.76795#map=19/59.93421/10.76795">Hegermannsgate
-23A på Torshov</a> har et fantastisk utvalg, og åpent mellom 09:00 og
-17:00. De selger skruer, muttere, bolter, skiver etc i løs vekt, og
-så langt har jeg fått alt jeg har lett etter. De har i tillegg det
-meste av annen jernvare, som verktøy, lamper, ledninger, etc. Jeg
-håper de har nok kunder til å holde det gående lenge, da dette er en
-butikk jeg kommer til å besøke ofte. Butikken er et funn å ha i
-nabolaget for oss som liker å bygge litt selv. :)</p>
+ <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><p><a href="https://www.vg.no/sport/i/J1g8zj/stortingsvedtak-snart-ip-blokkerer-utenlandske-spillselskaper">VG</a>,
+<a href="https://www.dagbladet.no/nyheter/stortinget-blokkerer-utenlandske-spillselskaper/69740219">Dagbladet</a>
+og
+<a href="https://www.nrk.no/ostfold/tar-opp-kampen-mot-utenlandske-spillselskap-1.14021381">NRK</a>
+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.</p>
</description>
</item>
<item>
- <title>Visualizing GSM radio chatter using gr-gsm and Hopglass</title>
- <link>http://people.skolelinux.org/pere/blog/Visualizing_GSM_radio_chatter_using_gr_gsm_and_Hopglass.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Visualizing_GSM_radio_chatter_using_gr_gsm_and_Hopglass.html</guid>
- <pubDate>Fri, 29 Sep 2017 10:30:00 +0200</pubDate>
- <description><p>Every mobile phone announce its existence over radio to the nearby
-mobile cell towers. And this radio chatter is available for anyone
-with a radio receiver capable of receiving them. Details about the
-mobile phones with very good accuracy is of course collected by the
-phone companies, but this is not the topic of this blog post. The
-mobile phone radio chatter make it possible to figure out when a cell
-phone is nearby, as it include the SIM card ID (IMSI). By paying
-attention over time, one can see when a phone arrive and when it leave
-an area. I believe it would be nice to make this information more
-available to the general public, to make more people aware of how
-their phones are announcing their whereabouts to anyone that care to
-listen.</p>
-
-<p>I am very happy to report that we managed to get something
-visualizing this information up and running for
-<a href="http://norwaymakers.org/osf17">Oslo Skaperfestival 2017</a>
-(Oslo Makers Festival) taking place today and tomorrow at Deichmanske
-library. The solution is based on the
-<a href="http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html">simple
-recipe for listening to GSM chatter</a> I posted a few days ago, and
-will show up at the stand of <a href="http://sonen.ifi.uio.no/">Åpen
-Sone from the Computer Science department of the University of
-Oslo</a>. The presentation will show the nearby mobile phones (aka
-IMSIs) as dots in a web browser graph, with lines to the dot
-representing mobile base station it is talking to. It was working in
-the lab yesterday, and was moved into place this morning.</p>
-
-<p>We set up a fairly powerful desktop machine using Debian
-Buster/Testing with several (five, I believe) RTL2838 DVB-T receivers
-connected and visualize the visible cell phone towers using an
-<a href="https://github.com/marlow925/hopglass">English version of
-Hopglass</a>. A fairly powerfull machine is needed as the
-grgsm_livemon_headless processes from
-<a href="https://tracker.debian.org/pkg/gr-gsm">gr-gsm</a> converting
-the radio signal to data packages is quite CPU intensive.</p>
-
-<p>The frequencies to listen to, are identified using a slightly
-patched scan-and-livemon (to set the --args values for each receiver),
-and the Hopglass data is generated using the
-<a href="https://github.com/petterreinholdtsen/IMSI-catcher/tree/meshviewer-output">patches
-in my meshviewer-output branch</a>. For some reason we could not get
-more than four SDRs working. There is also a geographical map trying
-to show the location of the base stations, but I believe their
-coordinates are hardcoded to some random location in Germany, I
-believe. The code should be replaced with code to look up location in
-a text file, a sqlite database or one of the online databases
-mentioned in
-<a href="https://github.com/Oros42/IMSI-catcher/issues/14">the github
-issue for the topic</a>.
-
-<p>If this sound interesting, visit the stand at the festival!</p>
+ <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><p>Brevpost er beskyttet av straffelovens bestemmelse som gjør det
+kriminelt å åpne andres brev. Dette følger av (ny) straffelovs
+<a href="https://lovdata.no/dokument/NL/lov/2005-05-20-28/§205">§ 205
+(Krenkelse av retten til privat kommunikasjon)</a>, 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.</p>
+
+<p>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.</p>
</description>
</item>
<item>
- <title>Easier recipe to observe the cell phones around you</title>
- <link>http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Easier_recipe_to_observe_the_cell_phones_around_you.html</guid>
- <pubDate>Sun, 24 Sep 2017 08:30:00 +0200</pubDate>
- <description><p>A little more than a month ago I wrote
-<a href="http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html">how
-to observe the SIM card ID (aka IMSI number) of mobile phones talking
-to nearby mobile phone base stations using Debian GNU/Linux and a
-cheap USB software defined radio</a>, and thus being able to pinpoint
-the location of people and equipment (like cars and trains) with an
-accuracy of a few kilometer. Since then we have worked to make the
-procedure even simpler, and it is now possible to do this without any
-manual frequency tuning and without building your own packages.</p>
-
-<p>The <a href="https://tracker.debian.org/pkg/gr-gsm">gr-gsm</a>
-package is now included in Debian testing and unstable, and the
-IMSI-catcher code no longer require root access to fetch and decode
-the GSM data collected using gr-gsm.</p>
-
-<p>Here is an updated recipe, using packages built by Debian and a git
-clone of two python scripts:</p>
-
-<ol>
-
-<li>Start with a Debian machine running the Buster version (aka
- testing).</li>
-
-<li>Run '<tt>apt install gr-gsm python-numpy python-scipy
- python-scapy</tt>' as root to install required packages.</li>
-
-<li>Fetch the code decoding GSM packages using '<tt>git clone
- github.com/Oros42/IMSI-catcher.git</tt>'.</li>
-
-<li>Insert USB software defined radio supported by GNU Radio.</li>
-
-<li>Enter the IMSI-catcher directory and run '<tt>python
- scan-and-livemon</tt>' to locate the frequency of nearby base
- stations and start listening for GSM packages on one of them.</li>
-
-<li>Enter the IMSI-catcher directory and run '<tt>python
- simple_IMSI-catcher.py</tt>' to display the collected information.</li>
-
-</ol>
-
-<p>Note, due to a bug somewhere the scan-and-livemon program (actually
-<a href="https://github.com/ptrkrysik/gr-gsm/issues/336">its underlying
-program grgsm_scanner</a>) do not work with the HackRF radio. It does
-work with RTL 8232 and other similar USB radio receivers you can get
-very cheaply
-(<a href="https://www.ebay.com/sch/items/?_nkw=rtl+2832">for example
-from ebay</a>), so for now the solution is to scan using the RTL radio
-and only use HackRF for fetching GSM data.</p>
-
-<p>As far as I can tell, a cell phone only show up on one of the
-frequencies at the time, so if you are going to track and count every
-cell phone around you, you need to listen to all the frequencies used.
-To listen to several frequencies, use the --numrecv argument to
-scan-and-livemon to use several receivers. Further, I am not sure if
-phones using 3G or 4G will show as talking GSM to base stations, so
-this approach might not see all phones around you. I typically see
-0-400 IMSI numbers an hour when looking around where I live.</p>
-
-<p>I've tried to run the scanner on a
-<a href="https://wiki.debian.org/RaspberryPi">Raspberry Pi 2 and 3
-running Debian Buster</a>, but the grgsm_livemon_headless process seem
-to be too CPU intensive to keep up. When GNU Radio print 'O' to
-stdout, I am told there it is caused by a buffer overflow between the
-radio and GNU Radio, caused by the program being unable to read the
-GSM data fast enough. If you see a stream of 'O's from the terminal
-where you started scan-and-livemon, you need a give the process more
-CPU power. Perhaps someone are able to optimize the code to a point
-where it become possible to set up RPi3 based GSM sniffers? I tried
-using Raspbian instead of Debian, but there seem to be something wrong
-with GNU Radio on raspbian, causing glibc to abort().</p>
+ <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><p>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,
+<a href="http://thehill.com/homenews/senate/379339-mccain-rips-trumps-congratulatory-call-to-putin-as-insult-to-russian-people">sited
+by The Hill and others</a>:
+
+<p><blockquote>
+<p>"An American president does not lead the Free World by
+congratulating dictators on winning sham elections."</p>
+</blockquote></p>
+
+<p>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
+<a href="https://en.wikipedia.org/wiki/Maher_Arar">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</a>.</p>
+
+<p>USA might be running ahead, but the path they are taking is not the
+one taken by any Free World.</p>
</description>
</item>
<item>
- <title>Datalagringsdirektivet kaster skygger over Høyre og Arbeiderpartiet</title>
- <link>http://people.skolelinux.org/pere/blog/Datalagringsdirektivet_kaster_skygger_over_H_yre_og_Arbeiderpartiet.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Datalagringsdirektivet_kaster_skygger_over_H_yre_og_Arbeiderpartiet.html</guid>
- <pubDate>Thu, 7 Sep 2017 21:35:00 +0200</pubDate>
- <description><p>For noen dager siden publiserte Jon Wessel-Aas en bloggpost om
-«<a href="http://www.uhuru.biz/?p=1821">Konklusjonen om datalagring som
-EU-kommisjonen ikke ville at vi skulle få se</a>». Det er en
-interessant gjennomgang av EU-domstolens syn på snurpenotovervåkning
-av befolkningen, som er klar på at det er i strid med
-EU-lovgivingen.</p>
-
-<p>Valgkampen går for fullt i Norge, og om noen få dager er siste
-frist for å avgi stemme. En ting er sikkert, Høyre og Arbeiderpartiet
-får ikke min stemme
-<a href="http://people.skolelinux.org/pere/blog/Datalagringsdirektivet_gj_r_at_Oslo_H_yre_og_Arbeiderparti_ikke_f_r_min_stemme_i__r.html">denne
-gangen heller</a>. Jeg har ikke glemt at de tvang igjennom loven som
-skulle pålegge alle data- og teletjenesteleverandører å overvåke alle
-sine kunder. En lov som er vedtatt, og aldri opphevet igjen.</p>
-
-<p>Det er tydelig fra diskusjonen rundt grenseløs digital overvåkning
-(eller "Digital Grenseforsvar" som det kalles i Orvellisk nytale) at
-hverken Høyre og Arbeiderpartiet har noen prinsipielle sperrer mot å
-overvåke hele befolkningen, og diskusjonen så langt tyder på at flere
-av de andre partiene heller ikke har det. Mange av
-<a href="https://data.holderdeord.no/votes/1301946411e">de som stemte
-for Datalagringsdirektivet i Stortinget</a> (64 fra Arbeiderpartiet,
-25 fra Høyre) er fortsatt aktive og argumenterer fortsatt for å radere
-vekk mer av innbyggernes privatsfære.</p>
-
-<p>Når myndighetene demonstrerer sin mistillit til folket, tror jeg
-folket selv bør legge litt innsats i å verne sitt privatliv, ved å ta
-i bruk ende-til-ende-kryptert kommunikasjon med sine kjente og kjære,
-og begrense hvor mye privat informasjon som deles med uvedkommende.
-Det er jo ingenting som tyder på at myndighetene kommer til å være vår
-privatsfære.
-<a href="http://people.skolelinux.org/pere/blog/How_to_talk_with_your_loved_ones_in_private.html">Det
-er mange muligheter</a>. Selv har jeg litt sans for
-<a href="https://ring.cx/">Ring</a>, som er basert på p2p-teknologi
-uten sentral kontroll, er fri programvare, og støtter meldinger, tale
-og video. Systemet er tilgjengelig ut av boksen fra
-<a href="https://tracker.debian.org/pkg/ring">Debian</a> og
-<a href="https://launchpad.net/ubuntu/+source/ring">Ubuntu</a>, og det
-finnes pakker for Android, MacOSX og Windows. Foreløpig er det få
-brukere med Ring, slik at jeg også bruker
-<a href="https://signal.org/">Signal</a> som nettleserutvidelse.</p>
+ <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><p>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.</p>
+
+<p>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.</p>
+
+<p>Personally, I would recommend to completely remove your Facebook
+account, and take back some control of your personal information.
+<a href="https://www.theguardian.com/technology/2018/mar/19/how-to-protect-your-facebook-privacy-or-delete-yourself-completely">According
+to The Guardian</a>, it is a bit hard to find out how to request
+account removal (and not just 'disabling'). You need to
+<a href="https://www.facebook.com/help/224562897555674?helpref=faq_content">visit
+a specific Facebook page</a> and click on 'let us know' on that page
+to get to <a href="https://www.facebook.com/help/delete_account">the
+real account deletion screen</a>. 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.</p>
+
+<p>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 <a href="">NUUG</a> last april about
+<a href="https://www.nuug.no/aktiviteter/20170404-big-data-psychometric/">
+Data collection, psychometric profiling and their impact on
+politics</a>.</p>
+
+<p>And if you want to communicate with your friends and loved ones,
+use some end-to-end encrypted method like
+<a href="https://www.signal.org/">Signal</a> or
+<a href="https://ring.cx/">Ring</a>, and stop sharing your private
+messages with strangers like Facebook and Google.</p>
</description>
</item>
projects / homepage.git / blobdiff