Install rbenv

install-rbenv.sh

#!/bin/bash
echo '# rbenv setup - only add RBENV PATH variables if no single user install found' > /etc/profile.d/rbenv.sh
echo 'if [[ ! -d "${HOME}/.rbenv" ]]; then' >> /etc/profile.d/rbenv.sh
echo '  export RBENV_ROOT=/usr/local/rbenv' >> /etc/profile.d/rbenv.sh
echo '  export PATH="$RBENV_ROOT/bin:$PATH"' >> /etc/profile.d/rbenv.sh
echo '  eval "$(rbenv init -)"' >> /etc/profile.d/rbenv.sh
echo 'fi'  >> /etc/profile.d/rbenv.sh

chmod +x /etc/profile.d/rbenv.sh

# Install ruby-build:
pushd /tmp
  rm -rf /tmp/ruby-build
  git clone git://github.com/sstephenson/ruby-build.git

  # Check if clone succesful
  if [ $? -gt 0 ]; then
    echo >&2  "Error: Git clone error! See above.";
    exit 1;
  fi

  cd ruby-build
  ./install.sh
popd