#!/bin/bash

Boot_CONFIG=/boot/grub/grub.conf

ROOT=$(cat /boot/grub/grub.conf |grep -v ^# |grep title | nl -b a -v 0 | grep -w with | awk '{print $1}')
NOROOT=$(cat /boot/grub/grub.conf |grep -v ^# | grep title | nl -b a -v 0 | grep -w without | awk '{print $1}')

if [ "$1" = "root" ];then
     sed -i "/default/s@[0-9]@${ROOT}@"  $Boot_CONFIG 
elif [ "$1" = "noroot" ];then
     sed -i "/default/s@[0-9]@${NOROOT}@"  $Boot_CONFIG 
else
	echo "Usage:[root | noroot]"
        exit 1
fi