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@@ -6,6 +6,72 @@
                 <link>http://people.skolelinux.org/pere/blog/</link>
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                 <link>http://people.skolelinux.org/pere/blog/</link>
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+       <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>&lt;p&gt;A month ago, I blogged about my work to automatically check the
+copyright status of IMDB entries, and try to count the number of
+movies listed in IMDB where it is legal to distribute it 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
+&lt;ahref=&quot;https://github.com/petterreinholdtsen/public-domain-free-imdb&quot;&gt;a
+git repository&lt;/a&gt;, currently available from github.&lt;/p&gt;
+
+&lt;p&gt;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 Word II caused the dip around 1940, but what caused the peak
+around 2010?&lt;/p&gt;
+
+&lt;p&gt;&lt;img src=&quot;http://people.skolelinux.org/pere/blog/images/2017-11-18-verk-i-det-fri-filmer.png&quot; /&gt;&lt;/p&gt;
+
+&lt;p&gt;I&#39;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 &#39;make stats&#39; in the git repository:&lt;/p&gt;
+
+&lt;pre&gt;
+  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
+&lt;/pre&gt;
+
+&lt;p&gt;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&#39;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.
+
+&lt;p&gt;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 positive 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?&lt;/p&gt;
+
+&lt;p&gt;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.&lt;/p&gt;
+</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>
        <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>


@@ -683,96 +749,5 @@ brukere med Ring, slik at jeg også bruker
 </description>
        </item>
        
 </description>
        </item>
        

-       <item>
-               <title>Simpler recipe on how to make a simple $7 IMSI Catcher using Debian</title>
-               <link>http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html</guid>
-                <pubDate>Wed, 9 Aug 2017 23:59:00 +0200</pubDate>
-               <description>&lt;p&gt;On friday, I came across an interesting article in the Norwegian
-web based ICT news magazine digi.no on
-&lt;a href=&quot;https://www.digi.no/artikler/sikkerhetsforsker-lagde-enkel-imsi-catcher-for-60-kroner-na-kan-mobiler-kartlegges-av-alle/398588&quot;&gt;how
-to collect the IMSI numbers of nearby cell phones&lt;/a&gt; using the cheap
-DVB-T software defined radios.  The article refered to instructions
-and &lt;a href=&quot;https://www.youtube.com/watch?v=UjwgNd_as30&quot;&gt;a recipe by
-Keld Norman on Youtube on how to make a simple $7 IMSI Catcher&lt;/a&gt;, and I decided to test them out.&lt;/p&gt;
-
-&lt;p&gt;The instructions said to use Ubuntu, install pip using apt (to
-bypass apt), use pip to install pybombs (to bypass both apt and pip),
-and the ask pybombs to fetch and build everything you need from
-scratch.  I wanted to see if I could do the same on the most recent
-Debian packages, but this did not work because pybombs tried to build
-stuff that no longer build with the most recent openssl library or
-some other version skew problem.  While trying to get this recipe
-working, I learned that the apt-&gt;pip-&gt;pybombs route was a long detour,
-and the only piece of software dependency missing in Debian was the
-gr-gsm package.  I also found out that the lead upstream developer of
-gr-gsm (the name stand for GNU Radio GSM) project already had a set of
-Debian packages provided in an Ubuntu PPA repository.  All I needed to
-do was to dget the Debian source package and built it.&lt;/p&gt;
-
-&lt;p&gt;The IMSI collector is a python script listening for packages on the
-loopback network device and printing to the terminal some specific GSM
-packages with IMSI numbers in them.  The code is fairly short and easy
-to understand.  The reason this work is because gr-gsm include a tool
-to read GSM data from a software defined radio like a DVB-T USB stick
-and other software defined radios, decode them and inject them into a
-network device on your Linux machine (using the loopback device by
-default).  This proved to work just fine, and I&#39;ve been testing the
-collector for a few days now.&lt;/p&gt;
-
-&lt;p&gt;The updated and simpler recipe is thus to&lt;/p&gt;
-
-&lt;ol&gt;
-
-&lt;li&gt;start with a Debian machine running Stretch or newer,&lt;/li&gt;
-
-&lt;li&gt;build and install the gr-gsm package available from
-&lt;a href=&quot;http://ppa.launchpad.net/ptrkrysik/gr-gsm/ubuntu/pool/main/g/gr-gsm/&quot;&gt;http://ppa.launchpad.net/ptrkrysik/gr-gsm/ubuntu/pool/main/g/gr-gsm/&lt;/a&gt;,&lt;/li&gt;
-
-&lt;li&gt;clone the git repostory from &lt;a href=&quot;https://github.com/Oros42/IMSI-catcher&quot;&gt;https://github.com/Oros42/IMSI-catcher&lt;/a&gt;,&lt;/li&gt;
-
-&lt;li&gt;run grgsm_livemon and adjust the frequency until the terminal
-where it was started is filled with a stream of text (meaning you
-found a GSM station).&lt;/li&gt;
-
-&lt;li&gt;go into the IMSI-catcher directory and run &#39;sudo python simple_IMSI-catcher.py&#39; to extract the IMSI numbers.&lt;/li&gt;
-
-&lt;/ol&gt;
-
-&lt;p&gt;To make it even easier in the future to get this sniffer up and
-running, I decided to package
-&lt;a href=&quot;https://github.com/ptrkrysik/gr-gsm/&quot;&gt;the gr-gsm project&lt;/a&gt;
-for Debian (&lt;a href=&quot;https://bugs.debian.org/871055&quot;&gt;WNPP
-#871055&lt;/a&gt;), and the package was uploaded into the NEW queue today.
-Luckily the gnuradio maintainer has promised to help me, as I do not
-know much about gnuradio stuff yet.&lt;/p&gt;
-
-&lt;p&gt;I doubt this &quot;IMSI cacher&quot; is anywhere near as powerfull as
-commercial tools like
-&lt;a href=&quot;https://www.thespyphone.com/portable-imsi-imei-catcher/&quot;&gt;The
-Spy Phone Portable IMSI / IMEI Catcher&lt;/a&gt; or the
-&lt;a href=&quot;https://en.wikipedia.org/wiki/Stingray_phone_tracker&quot;&gt;Harris
-Stingray&lt;/a&gt;, but I hope the existance of cheap alternatives can make
-more people realise how their whereabouts when carrying a cell phone
-is easily tracked.  Seeing the data flow on the screen, realizing that
-I live close to a police station and knowing that the police is also
-wearing cell phones, I wonder how hard it would be for criminals to
-track the position of the police officers to discover when there are
-police near by, or for foreign military forces to track the location
-of the Norwegian military forces, or for anyone to track the location
-of government officials...&lt;/p&gt;
-
-&lt;p&gt;It is worth noting that the data reported by the IMSI-catcher
-script mentioned above is only a fraction of the data broadcasted on
-the GSM network.  It will only collect one frequency at the time,
-while a typical phone will be using several frequencies, and not all
-phones will be using the frequencies tracked by the grgsm_livemod
-program.  Also, there is a lot of radio chatter being ignored by the
-simple_IMSI-catcher script, which would be collected by extending the
-parser code.  I wonder if gr-gsm can be set up to listen to more than
-one frequency?&lt;/p&gt;
-</description>
-       </item>
-       

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