How to remove Ruby and gems from your system
Remove gems ❌ 📦
Delete custom gems installed at the user level - only your user could run them.
$ rm -rf ~/.gem
Delete system-wide custom gems - any user could run them. If only root has access to modify this directory, then you'll need to run with sudo.
$ rm -rf /usr/local/lib/ruby/
That directory contains gems/ and site_ruby by the way.
Remove Ruby 🙅♂️ 💎
Remove the custom Ruby using your package manager.
macOS
$ brew uninstall ruby
Linux
$ sudo apt remove ruby ruby-dev
Or, if you installed as ruby-full, then run:
$ sudo apt remove ruby-full
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