+#!/bin/sh
+# A very primitive backlight setter with a hardcoded backlight path, to replace
+# xbacklight which currently does not work on my system.
+if ! echo "${1}" | egrep -q '^[0-9]+$'; then
+ echo 'Argument must be a number.'
+ exit 1
+fi
+percentage=${1}
+backlight_dir=/sys/class/backlight/intel_backlight
+max_brightness=$(cat "${backlight_dir}"/max_brightness)
+if [ "${percentage}" = '100' ]; then
+ sudo sh -c 'echo '"${max_brightness}"' > '"${backlight_dir}"'/brightness'
+else
+ fract=$(expr "${max_brightness}" / 100)
+ brightness=$(expr "${percentage}" \* "${fract}")
+ sudo sh -c 'echo '"${brightness}"' > '"${backlight_dir}"'/brightness'
+fi