script for detecting monitors in Ubuntu

monitorSwitch.sh

#!/bin/sh
#
# Detect displays and move panels to the primary display
#

#15 second pause
sleep 15

PYTHON=python2.6
DISPER=/usr/bin/disper

# disper command will detect and configure monitors
$PYTHON $DISPER --displays=auto -e -t left

# parse output from disper tool how many displays we have attached
# disper prints 2 lines per displer
lines=`$PYTHON $DISPER -l|wc -l`

display_count=$((lines / 2))

echo $display_count

echo "Detected display count:" $display_count

# Make sure that we move panels to the correct display based
# on the display count
if [ $display_count = 1 ] ; then
    echo "Moving panels to the internal LCD display"
    gconftool-2 \
	--set "/apps/panel/toplevels/bottom_panel_screen0/monitor" \
	--type integer "0"
    gconftool-2 \
	--set "/apps/panel/toplevels/top_panel_screen0/monitor" \
	--type integer "0"
    sleep 5
    pkill gnome-panel
else
    echo "Moving panels to the external display"
    gconftool-2 \
	--set "/apps/panel/toplevels/top_panel_screen0/monitor" \
	--type integer "1"
    gconftool-2 \
	--set "/apps/panel/toplevels/bottom_panel_screen0/monitor" \
	--type integer "1"
    sleep 5
    pkill gnome-panel
fi