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I'm a beginner with Mac OS X. Would somebody please tell me how to fully uninstall Firefox using Terminal on Mac OS X Lion?

I'm experiencing hangs and crashes with Firefox 5.0.1, so I want to remove it then re-install it.

Thanks so much in advance.

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To remove Firefox.app:

  • Login with an administrator account
  • sudo rm -rf /Applications/Firefox.app/

You get the same result by just dragging the Firefox app from /Applications/ to the trash.

If the crashes continue after reinstalling, deleting preferences and support files in the user library may help:

  • ~/Library/Preferences/org.mozilla.firefox*
  • ~/Library/Application Support/Firefox
  • ~/Library/Application Support/Mozilla
  • ~/Library/Mozilla
  • ~/Library/Caches/Firefox
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  • please can you list me those files when you get back home – JAHelia Nov 30 '11 at 11:44
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    @JAHelia, you could use a program like AppCleaner to do the search & deletion for you. – Jari Keinänen Nov 30 '11 at 13:34
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It's very probable that your profile is corrupt, rather than Firefox itself (in which case, deleting Firefox won't help as any new installation will use the corrupt profile).

Creating a new profile may help - the safest way to do that is using the Profile Manager.

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You might also consider uninstalling it using AppZapper, which will remove the app and all of its configuration files. There is a fully-functional free trial available.

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