rvm
Easily installing, managing, and working with multiple ruby environments. tldr-pages
On several platforms
Several platforms
Install one or more versions of Ruby
rvm install version1 version2 ...IdentifyDisplay a list of installed versions
rvm listIdentifyUse a specific version of Ruby
rvm use versionIdentifySet the default Ruby version
rvm --default use versionIdentifyUpgrade a version of Ruby to a new version
rvm upgrade current_version new_versionIdentifyUninstall a version of Ruby and keep its sources
rvm uninstall versionIdentifyRemove a version of Ruby and its sources
rvm remove versionIdentifyShow specific dependencies for your OS
rvm requirementsIdentify