Difference between revisions of "Changing filetype association via MIME"

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(Redirect - it's covered in Default Applications#Custom File Associations)
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Many of you will be wanting to run windows apps within your linux installation, and you can do this via the wonderful [[Wine]]. This guide will show you how to alter your MIME database in a safe way so that you can associate windows executables with Wine.
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#REDIRECT [[Default Applications]]
'''Warning''': Do NOT attempt to modify the mime database directly!
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* First, create the file "~/.local/share/mime/packages/mime.xml", as such:
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$ mkdir -p ~/.local/share/mime/packages
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$ cd ~/.local/share/mime/packages
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$ touch mime.xml
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(Or you can just do it with your graphical file browser)
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* Next, open up mime.xml and paste the following inside:
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<?xml version="1.0" encoding="UTF-8"?>
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<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
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  <mime-type type="application/x-ms-dos-executable">
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          <comment xml:lang="en">Windows Executable</comment>
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          <glob pattern="*.exe"/>
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  </mime-type>
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</mime-info>
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* Finally, enter this at the command prompt:
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$ update-mime-database ~/.local/share/mime
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That's it!
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The method outlined above will intergrate the xml file you made with the mime database, so that you can make your own associations for .exe files (probably [[Wine]]).
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==Setting mime handler for arbitrary files==
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In this example, we are going to define rox as the file handler of a file called "test.mp4".
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The mime type somehow is in the file so it is not the app that says "use mime type x on this file" but it's rather "use whatever mime type is associated with this file". To see a mime type of a file called test.mp4 use this command:
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<pre>$ xdg-mime query filetype test.mp4</pre>
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In my example I got this:
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<pre>audio/mp4; charset=binary</pre>
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Now we set the mime-type, in my example I want to use rox to handle this file, and then configure rox to use vlc:
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<pre>$ xdg-mime default rox.desktop audio/mp4</pre>
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Since I already set the default action for that file in rox with a right-click and then using "vlc" as the command, this now works beautifully.
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If you are wondering, setting the default app for a mime type will edit the file
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<pre>~/.local/share/applications/defaults.list</pre>
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and add the following for this magic to work:
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<pre>
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<Default Applications>
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audio/mp4=rox.desktop
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</pre>
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On a side note, does anyone else feel that freedesktop.org's documentation really blows? Isn't all of the above supposed to be explained for example here? <url>http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec</url>
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[[Category: HOWTOs (English)]]
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[[Category: Wine (English)]]
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Revision as of 18:44, 5 June 2013