Disable USB devices on GRUB in Ubuntu 9.10 Karmic Koala

For security it's important to disable all usb devices for not get out information, then I write a small bash script that do it. I hope that work succesfully.

#!/bin/bash
cp /etc/default/grub /tmp && cd /tmp
sed 's/splash/splash nousb/g' grub > grub.2 && sudo mv grub.2 /etc/default/grub
echo "Disable USB on GRUB..."