Ubuntu Linux Install Firefox 3 Web browser

Q. How do I install Firefox 3 web browser under Ubuntu Linux?

A. Firefox 3 can be installed easily using apt-get


command under Ubuntu Linux 7.10 (Gutsy Gibbon) and Ubuntu 8.04 (Hardy Heron).

Command to install Firefox 3 Final version Web browser

Open the terminal and type the following two commands to install firefox 3.0 final version:
$ sudo apt-get update
$ sudo apt-get install firefox-3.0

Sample output:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
Suggested packages:
  firefox-3.0-gnome-support latex-xft-fonts
The following NEW packages will be installed:
  firefox-3.0 xulrunner-1.9
0 upgraded, 2 newly installed, 0 to remove and 55 not upgraded.
Need to get 9845kB of archives.
After unpacking 27.4MB of additional disk space will be used.
Do you want to continue [Y/n]? y 

How do I start Firefox 3?

Once installed click on Applications > Internet > Firefox Web Browser

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I'm Vivek Gite, and I write about Linux, macOS, Unix, IT, programming, infosec, and open source. Subscribe to my RSS feed or email newsletter for updates.

8 comments… add one
  • Nevyn Jun 25, 2008 @ 20:26

    this is great but won’t this leave version 2.x still on my machine.

    should I uninstall 2.x first or second?

    Reason I ask is i want as many of my add-ons to migrate over as possible.

    Thanks for the information though – it just shows how easy ubuntu is.

  • ff2 Jul 11, 2008 @ 7:43

    followed these instructions and still stuck with ff2, do i need to change the launcher icons somehow? how do i know if it actually installed?

  • 🛡️ Vivek Gite (Author and Admin) nixCraft Jul 11, 2008 @ 7:54

    What do you see when you go to Help > About?

  • ff2 Jul 12, 2008 @ 4:33

    The the launcher icons definitely fire up ff2. I found granparadiso installed in Synaptic Package Manager and removed it – I didn’t realise this was an alpha version of ff3 until I had done some reading up.

    Now if I enter the terminal commands you’ve provided, granparadiso reappears. I assume I have to update or get rid of the packages somehow?

  • david Jul 14, 2008 @ 8:45

    # apt-get install firefox-3.0
    Reading package lists… Done
    Building dependency tree… Done
    E: Couldn’t find package firefox-3.0

    how to fix my problem? thanks

  • Samir Aug 19, 2009 @ 11:04

    Update your system : sudo apt-get update

    Now, run following command. It should/ will work.

    sudo apt-get install firefox-3.0

  • meoidjfoijoas May 8, 2014 @ 20:17

    No Longer works

  • Caroline Jan 12, 2015 @ 14:44

    I get this;

    caroline@carolines-desktop:~$ sudo apt-get install firefox-3.0
    Reading package lists… Done
    Building dependency tree
    Reading state information… Done
    E: Couldn’t find package firefox-3.0

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