sudo apt-get update
sudo apt-get install gcc
sudo apt-get install make
sudo apt-get install build-essential
sudo apt-get install zlib1g-dev libssl-dev libreadline-dev libyaml-dev libxml2-dev libxslt-dev libffi-dev
sudo apt-get install git
git clone https://github.com/sstephenson/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile