Install ruby and rails with rvm on Ubuntu

gistfile1.sh

# install packages to get RVM
sudo apt-get install build-essential git-core curl

# install RVM
curl -L get.rvm.io | bash -s stable

# load RVM
echo '[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"' >> ~/.bashrc
source "$HOME/.rvm/scripts/rvm"

# install packages suggested by `rvm requirements`
sudo apt-get install openssl libssl-dev libreadline6 libreadline6-dev \
  zlib1g zlib1g-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev \
  autoconf libc6-dev ncurses-dev automake libtool bison subversion

# install packages for mysql and postgresql
sudo apt-get install libmysqlclient-dev libpq-dev

# install nodejs # performs better than therubyracer and not needed in Gemfile
sudo apt-get install nodejs

# one step to install both ruby and rails
curl -L get.rvm.io | bash -s stable --rails