Firefox mimetypes.rdf

Question

Is it possible to create a default mimeTypes.rdf file for all the existing and new users ? So that whenever a user opens the firefox for the very first time, he will get the specified rdf file in his profile @ ~/.mozilla/firefox/*/mimeTypes.rdf

Answer 1

If you are creating users with useradd you can file directory /etc/skel to put files and directories in users home directories.

man useradd: The skeleton directory, which contains files and directories to be copied in the users home directory, when the home directory is created by useradd.

So you should create two files:

• /etc/skel/.mozilla/firefox/PROFILE_NAME/mimeTypes.rdf with content that you need

• /etc/skel/.mozilla/firefox/profiles.ini with:

  [General]
  StartWithLastProfile=1
  
  [Profile0]
  Name=Default User
  IsRelative=1
  Path=PROFILE_NAME
  Default=1
  

It should do the work with new users.

Answer 2

I found occurrences of /usr/lib/firefox/defaults/profile/mimeTypes.rdf on the web, but I'm not sure it will be used by recent versions of firefox. Might be worth a try!