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I'm using Ubuntu 10.04 with Fluxbox.

Since I installed Chromium-browser, it has been set as the default system browser (don't know why, don't know when, maybe I clicked accept somewhere without paying attention). Now every web link I click (for example from Skype), Chromium will be opened instead of Firefox.

How can I make Firefox my system default browser?

I need to set this preference using the command line.

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@slhck: not exactly.. i need to do this from command line – Heisenbug May 10 '11 at 11:04
    
Oh, then we'll make that more clear :) – slhck May 10 '11 at 11:06
up vote 18 down vote accepted

From the terminal, use

sudo update-alternatives --config x-www-browser

This will provide a list of installed browsers, similar to the following (which is mine):

There are two alternatives which provide `x-www-browser'.
Selection    Path                         Priority    Status
-------------------------------------------------------------
* 1          /usr/bin/chromium-browser    40          auto mode
  2          /usr/bin/firefox             40          manual mode

Press enter to keep the current choice[*], or type selection number:

Just hit the selection number for the browser you want.

share|improve this answer
    
Happy to, I'll edit it in now. – Lukasa May 10 '11 at 11:20
    
Thank you, +1 for you. – slhck May 10 '11 at 11:29
    
And how can I change the default browser to "Chromium" always using bash, without getting its number first? – Mathias Lykkegaard Lorenzen Jul 31 '13 at 16:41
2  
@MathiasLykkegaardLorenzen sudo update-alternatives --set x-www-browser /usr/bin/chromium-browser, there is also a command to list all alternatives in the form of --list name. Check out the manpage. – Winny Aug 10 '15 at 4:19

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