toggle_brightness « x13 « x « 1systems « makefu - stockholm - take all the computers hostage, they'll love you!

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#!/bin/sh
proc=/proc/acpi/ibm/lcdshadow
status=$(awk '/status:/{print $2}' "$proc")
if [ "$status" -eq 0 ];then
  echo 1 > "$proc"
else
  echo 0 > "$proc"
fi