blob: a0483e6bf7b7fbfd220e7ac76a68f075cf63492d (
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#!/bin/bash
listBacklight=`ls /sys/class/backlight`
if [ $# -gt 1 ] ; then
echo "light2 [VALUE]"
exit
fi
if [ -z "$1" ] ; then
val="show"
else
val="$1"
fi
if [ -n "$listBacklight" ] ; then
for backlight in "$listBacklight"
do
if [ "$val" == "show" ]; then
printf "${backlight}: "
cat /sys/class/backlight/${backlight}/brightness
else
echo "${val}" | sudo tee "/sys/class/backlight/${backlight}/brightness" 2>/dev/null /dev/null
if [ $? -ne 0 ]; then
printf "%s\n" "Erreur can't write to /sys/class/backlight/${backlight}/brightness" >&2
fi
fi
done
else
echo 'No backlight detected'
fi
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