blog/archive/2016/02/02.rss

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   4                 <title>Petter Reinholdtsen - Entries from February 2016</title>
   5                 <description>Entries from February 2016</description>
   6                 <link>http://people.skolelinux.org/pere/blog/</link>
   7
   8
   9         <item>
  10                 <title>Using appstream in Debian to locate packages with firmware and mime type support</title>
  11                 <link>http://people.skolelinux.org/pere/blog/Using_appstream_in_Debian_to_locate_packages_with_firmware_and_mime_type_support.html</link>
  12                 <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Using_appstream_in_Debian_to_locate_packages_with_firmware_and_mime_type_support.html</guid>
  13                 <pubDate>Thu, 4 Feb 2016 16:40:00 +0100</pubDate>
  14                 <description>&lt;p&gt;The &lt;a href=&quot;https://wiki.debian.org/DEP-11&quot;&gt;appstream system&lt;/a&gt; is
  15 taking shape in Debian, and one feature set that is very convenient is
  16 its ability to tell you want package to install to get a given
  17 firmware file.  This can be done using apt-file too, but that is for
  18 someone else to blog about. :)&lt;/p&gt;
  19
  20 &lt;p&gt;Here is a small recipe to find the package with a given firmware
  21 file, in this example I am looking for ctfw-3.2.3.0.bin, randomly
  22 picked from the set of firmware announced using appstream in Debian
  23 unstable.  In general you would be looking for the firmware requested
  24 by the kernel during kernel module loading.  To find the package
  25 providing the example file, do like this:&lt;/p&gt;
  26
  27 &lt;blockquote&gt;&lt;pre&gt;
  28 % apt install appstream
  29 [...]
  30 % apt update
  31 [...]
  32 % appstreamcli what-provides firmware:runtime ctfw-3.2.3.0.bin | \
  33   awk &#39;/Package:/ {print $2}&#39;
  34 firmware-qlogic
  35 %
  36 &lt;/pre&gt;&lt;/blockquote&gt;
  37
  38 &lt;p&gt;See &lt;a href=&quot;https://wiki.debian.org/AppStream/Guidelines&quot;&gt;the
  39 appstream wiki&lt;/a&gt; page to learn how to embed the package metadata in
  40 a way appstream can use.&lt;/p&gt;
  41
  42 &lt;p&gt;This same approach can be used to find any package supporting a
  43 given MIME type.  This is very useful when you get a file you do not
  44 know how to handle.  First find the mime type using &lt;tt&gt;file
  45 --mime-type&lt;/tt&gt;, and next look up the package providing support for
  46 it.  Lets say you got an SVG file.  Its MIME type is image/svg+xml,
  47 and you can find all packages handling this type like this:&lt;/p&gt;
  48
  49 &lt;blockquote&gt;&lt;pre&gt;
  50 % apt install appstream
  51 [...]
  52 % apt update
  53 [...]
  54 % appstreamcli what-provides mimetype image/svg+xml | \
  55   awk &#39;/Package:/ {print $2}&#39;
  56 bkchem
  57 phototonic
  58 inkscape
  59 shutter
  60 tetzle
  61 geeqie
  62 xia
  63 pinta
  64 gthumb
  65 karbon
  66 comix
  67 mirage
  68 viewnior
  69 postr
  70 ristretto
  71 kolourpaint4
  72 eog
  73 eom
  74 gimagereader
  75 midori
  76 %
  77 &lt;/pre&gt;&lt;/blockquote&gt;
  78
  79 &lt;p&gt;I believe the MIME types are fetched from the desktop file for
  80 packages providing appstream metadata.&lt;/p&gt;
  81 </description>
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