Laptop battery consumption test under simulated user load

Battery_Consumption_Tester

#! /bin/bash
RUNTIME=1500	#number of seconds to run for
DELAY=7	#time to delay between starting/closing progs
OUTFILE=$1	#file to write results in

FIRSTPROG="gimp"
SECONDPROG="geany"
THIRDPROG="rhythmbox"

STARTTIME=$SECONDS
ELAPSEDTIME=$(($SECONDS - $STARTTIME))

if [ -z $OUTFILE ]; then
	echo "You need to supply a filename to save the test log in!"
	exit 1
fi

`rm $OUTFILE`
while [ $ELAPSEDTIME -le $RUNTIME ]
do
	
	#record elapsed time and power data
	ELAPSEDTIME=$(($SECONDS - $STARTTIME))
	echo "Elapsed time: " $ELAPSEDTIME " Date: " `date` >> $OUTFILE
	echo `upower -i /org/freedesktop/UPower/devices/battery_BAT0| grep -E "energy:|energy-rate|percentage"` >> $OUTFILE

	#now echo the above data in the terminal window
	echo "Elapsed time: " $ELAPSEDTIME " Date: " `date`
	echo `upower -i /org/freedesktop/UPower/devices/battery_BAT0| grep -E "energy:|energy-rate|percentage"`

	`$FIRSTPROG`&
	sleep $DELAY
	pkill $FIRSTPROG
	sleep $DELAY

	`$SECONDPROG`&
	sleep $DELAY
	pkill $SECONDPROG
	sleep $DELAY

	`$THIRDPROG`&
	sleep $DELAY
	pkill $THIRDPROG
	sleep $DELAY	

	#do some kind of file writing/copying here to use the disk more
	`dd if=/dev/urandom of=/tmp/temprandom bs=4M count=1`&
	sleep $DELAY

done

#clean up
`rm /tmp/temprandom`

echo "Finished! Seconds:" $SECONDS

#record final data
#record elapsed time and power data
ELAPSEDTIME=$(($SECONDS - $STARTTIME))
echo "Test finished! Elapsed time: " $ELAPSEDTIME " Date: " `date` >> $OUTFILE
echo `upower -i /org/freedesktop/UPower/devices/battery_BAT0| grep -E "energy:|energy-rate|percentage"` >> $OUTFILE