intel_pstate max cpu-frequency bash script.

cpf

#!/bin/bash
# Copyleft 2015 - Leonardo Kewitz github.com/kewitz
# intel_pstate max cpu-frequency script.

PMAX=/sys/devices/system/cpu/intel_pstate/max_perf_pct
CPUINFO=/proc/cpuinfo

if [ "$#" != "1" ]
then
	echo -e "Usage: cpf 30-100"
else
	sudo tee $PMAX <<<$1
fi

# Print current status...
PCT=$(<$PMAX)
MHZ=$(egrep -m 1 -o 'MHz.+\: (([[:digit:]]|\.)+$)' /proc/cpuinfo | egrep -o '([[:digit:]]|\.)+')
echo -e "Max performance currently at $PCT %. Actual clock $MHZ MHz"