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#!/bin/bash
brightness_file=/sys/class/backlight/intel_backlight/brightness
maxbrightness_file=/sys/class/backlight/intel_backlight/max_brightness
brightness=$(< $brightness_file)
maxbrightness=$(< $maxbrightness_file)
let target=$1+$brightness
if [ $target -gt $maxbrightness ]
then
#echo "Value too big. Target: $target; max: $maxbrightness"
echo $maxbrightness | tee $brightness_file
elif [ 0 -gt $target ]
then
#echo "Value too low. Target: $target"
echo "0" | tee $brightness_file
else
echo $target | tee $brightness_file
#echo "New brightness: $target/$maxbrightness"
fi
notify-send -t 500 "$(~/scripts/i3blocks/i3brightness.sh)"
pkill -SIGRTMIN+11 i3blocks
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