#!/bin/bash
       var=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)
       if [ -z "${var#*powersave*}" ]; then 
          ( # von powersave nach ondemand wechseln
          echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
          logger "powersave -> ondemand";
          )     

       elif [ -z "${var#*ondemand*}" ]; then
	  ( # von ondemand nach performance wechseln
	  echo "performance" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
	  logger "ondemand -> performance";
	  )

       else
          ( # von ondemand nach powersave wechseln
          echo "powersave" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
          logger "performance -> powersave";
          )                
       fi