#!/bin/bash
OFF=0
ON=2
PATH=/sys/devices/platform/dell-laptop/leds/dell::kbd_backlight/brightness
PREVIOUS_SETTING=$(< $PATH)
if [[ $PREVIOUS_SETTING -eq $OFF ]]
then
echo $ON > $PATH
echo "Keyboard Backlighting: ON"
else
echo $OFF > $PATH
echo "Keyboard Backlighting: OFF"
fi