Mine

#!/bin/bash
clear
# Livna & nVidia Installation for Fedora Core 6
function livna {
        echo "Livna & nVidia Installation:"
        echo ""
        echo "Installing livna-release-6.rpm..."
        su -c 'rpm -Uhv http://rpm.livna.org/livna-release-6.rpm'
        echo "Importing RPM-LIVNA-GPG-KEY..."
        su -c 'rpm -import http://rpm.livna.org/RPM-LIVNA-GPG-KEY'
        echo "nVidia information..."
        su -c 'yum info knomd-nvidia'
        echo "Installing yumex..."
        su -c 'yum install yumex'
        echo "Loading yumex..."
        su -c 'yumex'
        question
}
function question {
        echo "Did you receive any errors during yumex setup?"
        echo "[Y/N]" read YESNO
                if [[ "$YESNO" =~ [Yy] ]]; then
                	exit
        	elif [[ "$YESNO" = [Nn] ]]; then
                	nvidia
        	else clear
        	echo "Invalid Option"
        	echo ""
		fi        	
		question
}
function nvidia {
        echo "Installing kmod-nvidia package..."
        su -c 'yum install kmod-nvidia'
        echo "glxinfo:"
        echo ""
        glxinfo | grep direct
        echo "Script Complete"
}
livna