Setup Ruby with rbenv on Ubuntu 12.04

install.sh

# Dependencies (swiped from RVM)
sudo apt-get install build-essential bison openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev

# rbenv
cd
git clone git@github.com:sstephenson/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc

# ruby-build
mkdir -p ~/.rbenv/plugins
cd ~/.rbenv/plugins
git clone git://github.com/sstephenson/ruby-build.git

# Install Ruby
# `rbenv install` will list available versions
rbenv install 1.9.3-p194

# Set default Ruby version
rbenv global 1.9.2-p290