rbenv_system_wide_bootstrap.sh

#!/bin/bash

PREFIX="/usr/local"
BIN_DIR="${PREFIX}/bin"
RBENV_DIR="${PREFIX}/rbenv"
RBENV_PLUGINS_DIR="${RBENV_DIR}/plugins"
RBENV_GROUP="rbenv"

# Install rbenv
pushd ${PREFIX}
git clone git://github.com/sstephenson/rbenv.git
popd

# Install ruby-build and rbenv-gem-rehash
pushd ${RBENV_PLUGINS_DIR}
git clone git://github.com/sstephenson/ruby-build.git
git clone git://github.com/sstephenson/rbenv-gem-rehash.git
popd

# make rbenv symbol link
ln -s ${RBENV_DIR}/bin/rbenv ${BIN_DIR}/rbenv

# add rbenv to profile, will be sourced in login shell
cat <<EOF > /etc/profile.d/rbenv.sh
# rbenv setup
export RBENV_ROOT=${RBENV_DIR}
eval "\$(rbenv init -)"
EOF

# source rbenv in current shell
source /etc/profile.d/rbenv.sh

# add rbenv group
groupadd $RBENV_GROUP
chgrp -R $RBENV_GROUP $RBENV_DIR
find $RBENV_DIR -type d -or -type f | grep -v .git | xargs --max-args=1 chmod g+w

# install special version of ruby
rbenv install 2.1.0
rbenv global 2.1.0
rbenv rehash