Install RBenv + Ruby

commands.sh

VERSION_TO_INSTALL='2.2.2'

git clone git://github.com/sstephenson/rbenv.git .rbenv

echo 'export RBENV_ROOT='${HOME}/.rbenv"' >> ~/.bash_profile
echo 'if [ -d "${RBENV_ROOT}" ]; then' >> ~/.bash_profile
echo '  export PATH="${RBENV_ROOT}/bin:${PATH}"' >> ~/.bash_profile
echo '  eval "$(rbenv init -)"' >> ~/.bash_profile
echo 'fi' >> ~/.bash_profile
source ~/.bash_profile

git clone git://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
source ~/.bash_profile

echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bash_profile

rbenv install -v $VERSION_TO_INSTALL
rbenv global $VERSION_TO_INSTALL