rbenv_up.sh

#!/bin/sh

RBENV_HOME="$HOME/.rbenv"

if [ "$1" = 'init' ]; then
  git clone https://github.com/rbenv/rbenv.git $RBENV_HOME
  mkdir $RBENV_HOME/plugins
  if [ $? -eq 0 ]; then
    cd $RBENV_HOME/plugins
    git clone https://github.com/rbenv/ruby-build.git
  fi
  cd $HOME

echo '=================================================='

cat <<'EOT'
echo 'export RBENV_HOME="${HOME}/.rbenv"' >> $HOME/.zshrc
echo 'export PATH="${RBENV_HOME}/bin:${PATH}"' >> $HOME/.zshrc
echo 'eval "$(rbenv init -)"' >> $HOME/.zshrc
EOT

  exit
fi

for dir in '' '/plugins/ruby-build'
do
  cd $RBENV_HOME$dir
  git pull origin master
  cd $HOME
done

echo '=================================================='
rbenv install -l
echo '--------------------------------------------------'
rbenv versions
echo '=================================================='

cat <<EOT
rbenv install [NEW] --verbose
rbenv global [NEW]
gem install bundler
rbenv uninstall [OLD]
EOT