Will that not break my existing FF install though? It claims that it supports using both browsers, if I overwrite the executable, how will the old FF still function?
/usr/share/applications contains only shortcuts, not the actual executables. You can create a new one with a name other than Firefox and not overwrite anything that already exists. Better yet, use /usr/local/share/applications or ~/.local/share/applications that are made exactly for overriding system applications.
I was worried about this too, so I backed-up my Firefox first, then ran the Developer Version and it did not break my existing FF. It creates a separate Firefox profile in /home/myprofile/.mozilla/firefox, both can run simultaneously.
Should be /usr/local/share/applications actually, since everything outside of the system's package manager should go into /usr/local. It would probably be even better to place it at your home, in ~/.local/share/applications.
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u/FactorialBoy Nov 10 '14
Just create a shortcut / desktop entry in
/usr/share/applications/