#!/bin/sh state="$(cat /proc/acpi/ibm/fan | grep level | awk -F' ' '{print $2}' | head -n 1)" echo $state if [ state="auto" ]; then echo "level full-speed" > /proc/acpi/ibm/fan fi if [ state="disengaged" ]; then echo "level auto" > /proc/acpi/ibm/fan fi echo "level auto" > /proc/acpi/ibm/fan