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129 lines
2.3 KiB
129 lines
2.3 KiB
#!/bin/sh |
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# Control the processor characteristics |
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# Depends: - |
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b="$(tput bold)" |
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u="$(tput smul)" |
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red="$(tput setf 4)" |
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n="$(tput sgr0)" |
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help() { |
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cat << EOF |
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${b}NAME${n} |
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cpuctl - control the processor characteristics |
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${b}SYNOPSIS${n} |
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${b}cpuctl${n} ${u}OPTION${n} [${u}ARG${n}] |
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${b}OPTIONS${n} |
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${b}-h${n}, ${b}--help${n} Display usage message and exit. |
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${b}-l${n}, ${b}--list${n} |
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List the available energy performance modes. |
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${b}-g${n}, ${b}--get${n} |
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Get the energy performance mode. |
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${b}-s${n}[${u}MODE${n}], ${b}--set [${n}${u}MODE${n}] |
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Set the energy performance to ${U}MODE${N}, asks for the mode if left empty. |
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EOF |
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} |
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# Exit if no option is provided |
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[ "$#" -eq 0 ] && help && exit 1 |
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# Main program |
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# -------------------------------------- |
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listModes() |
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{ |
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modes="/sys/devices/system/cpu/cpufreq/policy0/energy_performance_available_preferences" |
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tr ' ' '\n' < "$modes" | sed '/^$/d' \ |
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| awk -v line="$1" '{ if (line == "") print NR") "$0; else if (NR == line) print $0; }' |
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} |
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getMode() |
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{ |
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mode="/sys/devices/system/cpu/cpufreq/policy0/energy_performance_preference" |
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cat "$mode" |
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} |
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setMode() |
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{ |
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option="$1" |
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if [ -z "$option" ]; then |
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listModes |
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printf "Enter the number to set: " |
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read -r option |
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fi |
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mode="$(listModes "$option")" |
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if ! sudo -v; then |
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echo "${b}${red}Error:${n} setting energy performance mode requires root privileges." >&2 |
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exit 1 |
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fi |
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for i in /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference; do |
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echo "$mode" | sudo tee "$i" > /dev/null |
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done |
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} |
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# Option parsing |
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# -------------------------------------- |
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script="$(basename "$0")" |
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parsed="$(getopt --options "hlgs::" --longoptions "help,list,get,set::" -n "$script" -- "$@" 2>&1)" |
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result="$?" |
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# Exit if invalid option is provided |
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if [ "$result" -ne 0 ]; then |
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echo "$parsed" | head -n 1 >&2 |
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echo "Try './$script --help' for more information." >&2 |
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exit 1 |
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fi |
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eval set -- "$parsed" |
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while true; do |
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case "$1" in |
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-h) |
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help |
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exit |
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;; |
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-l | --list) |
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option="list" |
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shift |
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;; |
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-g | --get) |
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option="get" |
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shift |
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;; |
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-s | --set) |
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option="set" |
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shift |
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;; |
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--) |
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shift |
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break |
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;; |
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*) |
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break |
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;; |
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esac |
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done |
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# Execute |
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# -------------------------------------- |
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case "$option" in |
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list) |
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listModes |
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;; |
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get) |
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getMode |
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;; |
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set) |
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setMode "$1" |
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;; |
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esac
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