rbenv_install.sh

#!/bin/bash
#
# instal rbenv and then, install ruby 2.3.0 and gem update, install bundler.
# This script is written for CentOS 7.
#

set -e

if [ ! -e /etc/redhat-release ]; then
    echo "This script can only run on CentOS!"
    exit 1
fi

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

echo "Starting install rbenv -------------------------------------------------------"

echo "install git"
yum install -y git

echo "clone rbenv and ruby-buld from github ----------------------------------------"
git clone https://github.com/sstephenson/rbenv.git /usr/local/rbenv
git clone https://github.com/sstephenson/ruby-build.git \
            /usr/local/rbenv/plugins/ruby-build

echo "Install dependency packeges --------------------------------------------------"
yum install -y gcc gcc-c++ bzip2 openssl-devel libyaml-devel libffi-devel \
              readline-devel zlib-devel gdbm-devel ncurses-devel sqlite-devel tar

echo "Set Env ----------------------------------------------------------------------"
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
source /etc/profile.d/rbenv.sh

echo "Install ruby and set global --------------------------------------------------"
rbenv -v
rbenv install 2.3.0
rbenv global 2.3.0

echo "Update gem -------------------------------------------------------------------"
gem update --system
gem -v

echo "Install bundler system -------------------------------------------------------"
gem install bundler
bundler -v

exit 0