rvm

Easily installing, managing, and working with multiple ruby environments. More information: https://rvm.io.

• Install one or more versions of Ruby:

rvm install version1 version2 …

• Display a list of installed versions:

rvm list

• Use a specific version of Ruby:

rvm use version

• Set the default Ruby version:

rvm --default use version

• Upgrade a version of Ruby to a new version:

rvm upgrade current_version new_version

• Uninstall a version of Ruby and keep its sources:

rvm uninstall version

• Remove a version of Ruby and its sources:

rvm remove version

• Show specific dependencies for your OS:

rvm requirements