Hi,
I was lazing around this morning when I thought I could do something fun.
The result is the bash script below. I'm a beginner to bash scripting. The
script uses temperature and AC adapter information from /proc/acpi to scale
frequency using cpufrequtils. This is, assuming that cpufrequtils has
already been configured with three governors - performance, ondemand and
powersave.
I did a chown root <script-name>.sh to give it root permissions.
Please let me know if I can do more with this. I want to try and improve it
(just for fun though).
---------
#! /bin/bash
ACPI=/proc/acpi
interval=5
ond='sudo cpufreq-set -r -g ondemand'
psv='sudo cpufreq-set -r -g powersave'
per='sudo cpufreq-set -r -g performance'
thermometer()
{ # output list of temperatures
read X Y < $ACPI/thermal_zone/TZ01/temperature
echo ${Y:0:2};
}
acad() { # output the AC Adapter state
read X Y < $ACPI/ac_adapter/ACAD/state
echo $Y;
}
while true; do
temp=`thermometer`
adapter=`acad`
if [[ $adapter = 'on-line' ]]; then
if [[ $temp -ge 60 ]]; then
$ond &
else
$per &
fi
fi
if [[ $adapter = 'off-line' ]]; then
$psv &
fi
sleep $interval
done
---------
Thanks.
--
Bhargav Prasanna
"Linux - Because x64 is a terrible thing to waste"
