This script reacts if laptop lid is opened or closed in Ubuntu 11.10 (Oneiric Ocelot)

lid.sh.post

#!/bin/sh

#########################################################################
## Script written by Ruben Barkow                                      ##
##                                                                     ##
## Description: This script reacts if laptop lid is opened or          ##
## closed in Ubuntu 11.10 (Oneiric Ocelot).                            ##
##                                                                     ##
## This script can be freely redistributed, modified and used.         ##
## Any redistribution must include the information of authors.         ##
##                                                                     ##
## THIS SCRIPT HAS NO WARRANTY!                                        ##
#########################################################################

grep -q close /proc/acpi/button/lid/*/state
if [ $? = 0 ]; then
	echo close>>/tmp/screen.lid
fi
grep -q open /proc/acpi/button/lid/*/state
if [ $? = 0 ]; then
	echo open>>/tmp/screen.lid
fi