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trying to associate .bluej files with bluej.

so i rightclick a bluej file ->properties ->open with and here is the problem. it says:

"Select an application to open "pacjage.bluej" and other files of type "plain text document""

this means that also .txt files are opened with bluej. Which of course dont work.

is there a way around this?

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  • Does this point you in the right direction: askubuntu.com/questions/16580/… ? It looks like you want to associate the .bluej filetype with a specific application - those are mime types in Ubuntu and that's what I suspect you're looking for but I'm unfamiliar with the format and application.
    – KGIII
    Oct 17 '15 at 20:06
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You need a new mimetype for bluej files. Start a simple test to see why:

$ mimetype pacjage.bluej
pacjage.bluej: text/plain

Therefore create a new mime type

  1. Create a new configuration via

    nano ~/.local/share/mime/packages/bluej.xml

  2. Add the configuration below

    <?xml version="1.0" encoding="UTF-8"?>
    <mime-info xmlns='http://www.freedesktop.org/standards/shared-mime-info'>
      <mime-type type="text/bluej">
        <comment>bluej file</comment>
        <glob pattern="*.bluej"/>
        <glob pattern="*.BLUEJ"/>
      </mime-type>
    </mime-info>
    
  3. Update the mime database

    update-mime-database ~/.local/share/mime
    
  4. Check the mimetype of your bluej file once again

    $ mimetype pacjage.bluej
    pacjage.bluej: text/bluej

For a system-wide configuration use the configuration file

/usr/share/mime/packages/bluej.xml

and update with

sudo update-mime-database /usr/share/mime

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