uninstall ruby version from rbenv

How to uninstall or remove ruby version from rbenv. I have installed two versions of ruby. While switching to ruby 1.9.3, I am getting segmentation fault. Can anyone please help, how to remove a particular version from rbenv?

Solution 1:

New way

Use the uninstall command: rbenv uninstall [-f|--force] <version>

rbenv uninstall 2.1.0  # Uninstall Ruby 2.1.0

Use rbenv versions to see which versions you have installed.

Old way

To remove a Ruby version from rbenv, delete the corresponding directory in ~/.rbenv/versions. E.g.

rm -rf ~/.rbenv/versions/1.9.3-p0

Run rbenv rehash afterwards to clean up any stale shimmed binaries from the removed version.

Solution 2:

ruby-build now adds an uninstall command to rbenv to handle the removal of ruby versions, if you want to avoid manual rm -fr (which might be considered risky) and rbenv rehash suggested by @Stephenson. For removing ruby version 1.9.3-p0 you would run the following:

rbenv uninstall 1.9.3-p0