As root execute: apt-get update apt-get install build-essential ruby rails rubygems1.8 apt-get install ruby1.8-dev libopenssl-ruby Chance PATH at /etc/environment: PATH=”/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/var/lib/gems/1.8/bin” Update your current environment: source…