#!/bin/bash

device=`xinput list | grep -Eo 'Touchpad\s*id\=[0-9]{1,2}' | grep -Eo '[0-9]{1,2}'`
state=`xinput list-props "$device" | grep "Device Enabled" | grep -o "[01]$"`

if [ "$state" -eq '1' ];then
  xinput --disable "$device"
else
  xinput --enable "$device"
fi