#!/bin/sh
#
# touchpad - switch touchpad(s) on or off
#
# $Id$

# see http://askubuntu.com/questions/292583/how-to-disable-touchpad-running-ubuntu-12-04lts-on-dell-inspiron-1525

Die() { echo $0: $@ >&2; exit 1; }

case "$1" in
0|off|no) state=0;;
1|on|yes) state=1;;
*) Die Usage: $0 [on|off];;
esac

IFS=

xinput |
perl -lne '/touchpad|trackpad| ALP/i and /^\S*\s+\S+\s+(\S+(\s\S+)*)\s*id=/ and print $1' |
while read name
do
  xinput set-prop "$name" 'Device Enabled' $state
done