Shell script to install rvm at the system level.

install_system_rvm.sh

#!/usr/bin/env bash

#
# execute with:
# curl https://gist.github.com/alanstevens/1909971/raw/install_system_rvm.sh|bash
#

echo "You will be prompted for your password by sudo."

# clear any previous sudo permission
sudo -k

user_name=$(whoami)

# run inside sudo
sudo bash <<SCRIPT

#
# Configure system level gem settings.
#
echo "Disabling ri & rdoc system wide for gem installations and upgrades."
echo "install: --no-rdoc --no-ri" >> /etc/gemrc
echo "update: --no-rdoc --no-ri" >> /etc/gemrc

#
# Install rvm at the system level.
#
\curl https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer | bash -s stable --autolibs=3

#
# add the current user to the rvm group to manage system rubies
#
usermod -aG rvm $user_name

#
# source rvm in the current shell session
#
source /etc/profile.d/rvm.sh

#
# Install Ruby and set system defaults
#
rvm install 1.9.3
rvm use 1.9.3 --default
gem update --system
rvm use 1.9.3@global
gem install bundler
gem install rake

SCRIPT

echo "#"
echo "# $(whoami),"
echo "#   In order to use rvm, you must logout - login again."
echo "#"