rbenv
rbenv
TLDR
Install a Ruby version
$ rbenv install [version]
Display a list of the latest stable versions for each Ruby
$ rbenv install --list
Display a list of installed Ruby versions
$ rbenv versions
Use a specific Ruby version across the whole system
$ rbenv global [version]
Use a specific Ruby version for an application/project directory
$ rbenv local [version]
Display the currently selected Ruby version
$ rbenv version
Uninstall a Ruby version
$ rbenv uninstall [version]
Display all Ruby versions that contain the specified executable
$ rbenv whence [executable]