touchpad-toggle.sh

# Works best on my laptop DELL XPS 9570 - Ubuntu 18.04

#!/bin/bash

touchpad_id=$(xinput list | sed -nre '/Touchpad/s/.*id=([0-9]*).*/\1/p')

state=$( xinput list-props "$touchpad_id" | grep "Device Enabled" | grep -o "[01]$" )

if [ "$state" -eq '1' ];then
    xinput --disable "$touchpad_id" && notify-send -i emblem-nowrite "Touchpad" "Disabled"
else
    xinput --enable "$touchpad_id" && notify-send -i input-touchpad "Touchpad" "Enabled"
fi