ubuntu_ruby_install.sh

#!/bin/bash

# Install rbenv
# https://github.com/sstephenson/rbenv
cd ~

git clone git://github.com/sstephenson/rbenv.git .rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> .bashrc
echo 'eval "$(rbenv init -)"' >> .bashrc

# reload .bashrc
source ~/.bashrc

# install ruby-build
# https://github.com/sstephenson/ruby-build
git clone git://github.com/sstephenson/ruby-build.git .ruby-build
cd .ruby-build
sudo ./install.sh

# list available ruby versions
ruby-build --definitions

# install ruby
rbenv install 2.1.5

# Install shims for all Ruby binaries
rbenv rehash

# Set default Ruby version
rbenv global 2.1.5

# Check Ruby
ruby -v # => ruby 2.1.5p### recent [x86_64-linux]

# Check OpenSSL
irb
require 'openssl' # => true