keyboard backlight not working linux
#!/bin/bash
# Adjust the keyboard backlight level
shopt -s -o nounset
declare -i KBD_BACKLIGHT_MAX=`cat /sys/class/leds/asus\:\:kbd_backlight/max_brightness`
declare -i KBD_BACKLIGHT_LEV=`cat /sys/class/leds/asus\:\:kbd_backlight/brightness`
# We need a parameter, etiher inc or dec
if [ $# -eq 0 ] ; then
exit 192
fi
case $1 in
-inc )
# increasing:
if [ ${KBD_BACKLIGHT_LEV} -lt ${KBD_BACKLIGHT_MAX} ] ; then
KBD_BACKLIGHT_LEV=${KBD_BACKLIGHT_LEV}+1
echo ${KBD_BACKLIGHT_LEV} | tee /sys/class/leds/asus::kbd_backlight/brightness
fi
;;
-dec )
# decreasing:
if [ ${KBD_BACKLIGHT_LEV} -gt 0 ] ; then
KBD_BACKLIGHT_LEV=${KBD_BACKLIGHT_LEV}-1
echo ${KBD_BACKLIGHT_LEV} | tee /sys/class/leds/asus::kbd_backlight/brightness
fi
;;
esac
exit 192