Backup before editng in case something goes wrong
Code:
harry@tramp:~
$ cd /etc/default
harry@tramp:/etc/default
$ ls
acpid console-setup gdomap irqbalance ntpdate smartmontools wicd
acpi-support cron grub keyboard numlockx ssh
avahi-daemon cryptdisks halt locale rcS tmpfs
bluetooth dbus hdparm networking rsync ufw
bsdmainutils devpts hwclock nfs-common rsyslog unclutter
cacerts extlinux ifplugd nss saned useradd
harry@tramp:/etc/default
$ cp grub grub.old
cp: cannot create regular file grub.old: Permission denied
harry@tramp:/etc/default
$ su
Password:
root@tramp:/etc/default# cp grub grub.old
root@tramp:/etc/default# ls
acpid cron grub.old locale rsync unclutter
acpi-support cryptdisks halt networking rsyslog useradd
avahi-daemon dbus hdparm nfs-common saned wicd
bluetooth devpts hwclock nss smartmontools
bsdmainutils extlinux ifplugd ntpdate ssh
cacerts gdomap irqbalance numlockx tmpfs
console-setup grub keyboard rcS ufw
grub.old is now my original file made into a backup before I edit the grub file.