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#!/bin/sh
# display-brightness.sh
# simple script to set display-brightness for zaurus clamshell
# author: patrick steiner <patrick.steiner@a1.net>
# version: 1.00 | 22.02.2005 23:20
STEP=5
MAX_BRIGHTNESS=`cat /sys/class/backlight/*/max_brightness`
ACTUAL_BRIGHTNESS=`cat /sys/class/backlight/*/actual_brightness`
BRIGHTNESS_FILE="/sys/class/backlight/*/brightness"
if [ ! -n "$1" ]; then
exit 0
fi
if [ "$1" = "up" ]; then
if [ $ACTUAL_BRIGHTNESS -eq $MAX_BRIGHTNESS ]; then
exit 0
else
let CURRENT_BRIGHTNESS=$ACTUAL_BRIGHTNESS+$STEP
echo $CURRENT_BRIGHTNESS >> $BRIGHTNESS_FILE
exit 0
fi
fi
if [ "$1" = "down" ]; then
if [ $ACTUAL_BRIGHTNESS -eq 0 ]; then
exit 0
elif [ $ACTUAL_BRIGHTNESS -lt $STEP ]; then
STEP=1
let CURRENT_BRIGHTNESS=$ACTUAL_BRIGHTNESS-$STEP
echo $CURRENT_BRIGHTNESS >> $BRIGHTNESS_FILE
exit 0
else
let CURRENT_BRIGHTNESS=$ACTUAL_BRIGHTNESS-$STEP
echo $CURRENT_BRIGHTNESS >> $BRIGHTNESS_FILE
exit 0
fi
fi
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