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I am trying to completely remove my Ruby and Rails installation.

After uninstalling Ruby with apt-get remove ruby1.9.1 I see that all the Ruby stuff like ruby, rake and irb from "/usr/bin" was removed but the gems remain here:


What's the best way to remove these? Again, I want to uninstall everything so I can try this install again.

rm -r /var/lib/gems/ ???
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apt-get remove --purge might be what you are looking for – user130370 Feb 11 '13 at 18:15
Thanks. Tried that, too. Still the gems persist... – Slinky Feb 11 '13 at 19:52
Does dpkg -S /path/to/gemfile show any package? – user130370 Feb 11 '13 at 23:48

After arm wrestling with this for most of the day, I uninstalled everything, installed RVM and then installed Ruby and Rails with RVM. Much, much better.

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You should have 'gem uninstall *' or --purge on apt-get remove. However, you can safely

rm -r /var/lib/gems/
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