Dell 9350 Touchpad toggle on Ubuntu

toggle_touchpad.sh

#!/bin/bash

declare -i ID
ID=`xinput list | grep -Eo 'DLL0704:01\s06CB:76AE\sUNKNOWN\s*id\=[0-9]{1,2}' | grep -Eo '\=[0-9]{1,2}' | grep -Eo '[0-9]{1,2}'`
declare -i STATE
STATE=`xinput list-props $ID|grep 'Device Enabled'|awk '{print $4}'`
if [ $STATE -eq 1 ]
then
	xinput disable $ID
	echo "Touchpad disabled."
else
	xinput enable $ID
	echo "Touchpad enabled."
fi