This script is simple way of configuring an rvm multiuser installation.

rvm_global_installation.sh

#!/bin/bash

    # Copyright(C) 2012 Koustubh Sinkar

    # This program is free software: you can redistribute it and/or modify
    # it under the terms of the GNU General Public License as published by
    # the Free Software Foundation, either version 3 of the License, or
    # (at your option) any later version.

    # This program is distributed in the hope that it will be useful,
    # but WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    # GNU General Public License for more details.

    # You should have received a copy of the GNU General Public License
    # along with this program. If not, see <http://www.gnu.org/licenses/

usage="\nUSAGE:\t\t ./rvm_global_install.sh [options]\n\nDESCRIPTION:\t This script is for creating the default RVM setup preferred by Koustubh Sinkar on any *nix computer that he setups\n\nOPTIONS:\n\t -x\t\t executes the installation script\n\t -h \t\t displays this help"

while getopts "xh" opt; do
    case $opt in
	x)
	    user=`whoami`
	    if [ $user != 'root' ]; then
		echo -e "You are not root/su. Please login again as root and rerun the script or run the script using sudo.\n"
		exit
	    fi

	    echo "Creating the system rvmuser who will responsible for managing the global rvm installlation"
	    useradd --system --base-dir /var/lib --create-home --no-user-group rvmuser
	    echo "Please set the password for the rvmuser."
	    passwd rvmuser
	    echo "Adding the rvmuser to the sudo group"
	    adduser rvmuser sudo 
	    
            # Install the Multi User installation
	    su - rvmuser --command "cd ~; \curl -L https://get.rvm.io | sudo bash -s stable"
	    echo "Adding the rvmuser to the group rvm"
	    adduser rvmuser rvm
	    exit
	    ;;
	h)
	    echo -e $usage
	    exit
	    ;;
	*)
	    echo -e $usage
	    exit
	    ;;
    esac
done

echo -e $usage