List available rubies
Check which ruby versions are available in rbenv. You can find ruby, jruby, maglev, rubinius etc.
rbenv install -l
Install a ruby version
You can install a specific ruby version with:
rbenv install 2.1.2
Run rehash after install/uninstall rubies
rbenv rehash
List your ruby versions
List all ruby versions installed in your machine
rbenv versions
Current ruby version
Wondering if/which ruby version is currently used?
rbenv version
Use this ruby in the current directory
Choose a version for your current directory
rbenv local 2.1.2
All gemset
Apart from ruby versions you have sets of gems called gemsets. Gemsets are organized and managed by bundler. To list all your gemsets run:
rbenv gemset list
Create gemset
When creating a new gemset you need to define the ruby version associated with the gemset and give gemset a name.
rbenv-gemset create
Current gemset
Check which gemset is used in your current directory.
rbenv gemset active
Delete gemset
Delete gemset for specific ruby version.
rbenv gemset delete