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#!/bin/sh set -eu usage() { echo "USAGE: $0 <on|off>" ; exit 111 } if [ "$#" -eq 0 ]; then usage fi case $1 in on) echo 0 > /sys/devices/system/cpu/intel_pstate/no_turbo ;; off) echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo ;; *) usage esac