Fast way to empty global gemset

rvm-empty-gems.sh

#!/bin/bash -e
for ruby in $(rvm list strings)
do
  echo -e "\e[32m======================================================\e[0m"
  echo -e "\e[32mUsing ruby \e[1m$ruby\e[0m" 
  echo -e "\e[32m======================================================\e[0m"
  cmd="rvm $ruby exec ""echo yes | rvm gemset empty"""
  echo "Cleaning $ruby gems"
  echo -e $cmd; $cmd
  echo
done