gistfile1.sh

#!/usr/bin/env bash
echo "Ensure RVM is loaded by calling /etc/profile.d/rvm.sh"
[[ -s /etc/profile.d/rvm.sh ]] && source /etc/profile.d/rvm.sh


printf "1 - Selecting system ruby\n"
rvm use system
rvm info

printf "2 - Printing current ruby\n"
ruby --version

printf "3 - Listing installed RVM-controlled rubies\n"
rvm list

printf "4 - Setting Ruby 1.8.7 as default\n"
rvm use 1.8.7 --default
rvm info

printf "5 - Running: rvm default do 'ruby -v ; gem -v' \n"
rvm default do 'ruby -v && gem -v'

printf "6 - Running: gem -v against Ruby 1.9.2 (non-default)\n"
rvm 1.9.2 do "ruby -v && gem -v"

printf "7 - Running: rvm info on default ruby\n"
rvm info

printf "8 - Running: rvm do gem -v  # gem -v against all installed rubies\n"
rvm do gem -v