To create a gemset we need to create a .rvmrc file.

Syntax:

$ rvm --rvmrc --create <ruby-version>@<gemsetname>

Example:

$ rvm --rvmrc --create ruby-2.2.2@myblog

The above line will create a .rvmrc file in the root directory of the app.

To get the list of available gemsets, use the following command:

$ rvm list gemsets

The Ruby Version Manager is a command line tool to simply install and manage different versions of Ruby.

  user@dev:~$ rvm list
  
  rvm rubies
  
  =* ruby-2.3.1 [ x86_64 ]
  
  # => - current
  # =* - current && default
  #  * - default