Ruby

Install Ruby on Mint

• Set the terminal as a login shell

• Install RVM

• Run the following commands:

  rvm install 2.2
  rvm use 2.2 --default

Interactive console

An alternative interactive shell to irb is Pry.

Troubleshooting

gem install fails

Problem:

$ gem install jekyll
ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions into the /var/lib/gems/1.9.1 directory.

Solution: the solution is not to use sudo, but to tick the Run command as login shell option.