governor.sh

#!/bin/bash -e

GOVERNOR=${2:-conservative}
n=0
case "${1}" in
	s | set)
		for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
			printf 'CPU%d\t[ %s -> %s ]\n' ${n} $(<"/sys/devices/system/cpu/cpu${n}/cpufreq/scaling_governor") "${GOVERNOR}"
			echo "${GOVERNOR}" >/sys/devices/system/cpu/cpu${n}/cpufreq/scaling_governor
			n=$((n+1))
		done
		;;
	l | ls | list)
		for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_governors; do
			printf 'CPU%d\t[ %s ]\n' ${n} "$(</sys/devices/system/cpu/cpu${n}/cpufreq/scaling_available_governors)"
			n=$((n + 1))
		done
		;;
	*)
		for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
			printf 'CPU%d:\t%s\n' ${n} "$(</sys/devices/system/cpu/cpu${n}/cpufreq/scaling_governor)"
			n=$((n + 1))
		done
		;;
esac