Listing RVM installed rubies.
There are a few different ways to list RVM installed rubies.
You can view the commands available by typing
rvm list
To list all installed rubies
rvm list rubies
To list the default ruby
rvm list default
To list the default ruby string only
rvm list default string
To list all installed rubies, in their ruby string representation only
rvm list strings
To list all *known* RVM installable Rubies
rvm list known
NOTE: Even though this is all *known* rubies, RVM can install many more rubies not listed :)