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dotfiles/.local/bin/kbacklight

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#!/usr/bin/env sh
######################################################################
# @author : swytch
# @file : kbacklight
# @license : GPLv3
# @created : Wednesday May 20, 2020 18:17:03 CEST
#
# @description : control keyboard brightness
# @dependencies: upower
######################################################################
max=$(cat /sys/class/leds/tpacpi::kbd_backlight/max_brightness)
current=$(cat /sys/class/leds/tpacpi::kbd_backlight/brightness)
new=$(expr $current + 1)
setKeyboardLight () {
dbus-send --system --type=method_call --dest="org.freedesktop.UPower" "/org/freedesktop/UPower/KbdBacklight" "org.freedesktop.UPower.KbdBacklight.SetBrightness" int32:$1
}
[ $new -gt $max ] && new=0
setKeyboardLight $new