Update Ruby's RVM, ruby, and gems

ruby-upgrade.sh

#!/bin/bash

# Load RVM into a shell session *as a function*
if [[ -s "$HOME/.rvm/scripts/rvm" ]] ; then

  # First try to load from a user install
  source "$HOME/.rvm/scripts/rvm"

elif [[ -s "/usr/local/rvm/scripts/rvm" ]] ; then

  # Then try to load from a root install
  source "/usr/local/rvm/scripts/rvm"

else

  printf "ERROR: An RVM installation was not found.\n"

fi

echo "$ rvm get stable --auto-dotfiles"
rvm get stable --auto-dotfiles

echo "$ rvm get head"
rvm get head

echo "$ rvm cleanup all"
rvm cleanup all

echo "$ gem update --system"
gem update --system

echo "$ rvm gemset use global"
rvm gemset use global

echo "$ gem update (global)"
gem update

echo "$ gem cleanup (global)"
gem cleanup

echo "$ rvm use @default"
rvm use @default

echo "$ gem update (@default)"
gem update

echo "$ gem cleanup (@default)"
gem cleanup

echo "$ rvm list"
rvm list

echo "$ rvm gemset list"
rvm gemset list