Added brightness changing script

.local/bin/change-brightness

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+max_brightness=`cat /sys/class/backlight/intel_backlight/max_brightness`
+brightness=`cat /sys/class/backlight/intel_backlight/brightness`
+increment=12000
+
+if [ "$1" = "down" ]; then
+    new_brightness=$(($brightness - $increment))
+    if [ $new_brightness -lt 0 ]; then
+        new_brightness=0
+    fi
+else
+    new_brightness=$(($brightness + $increment))
+    if [ $new_brightness -gt $max_brightness ]; then
+        new_brightness=$max_brightness
+    fi
+fi
+
+echo $new_brightness > /sys/class/backlight/intel_backlight/brightness
+ratio=$(( (new_brightness * 100) / max_brightness ))
+notify-send -r 43 "Brightness: ${ratio}%"
+