Generates a cpu load average and maintains it in the form of a sinusoid, with a period in time.

load_average.sh

MAXJOBS=20
for i in `seq 1 $MAXJOBS` ; do nice -n 19 gzip -c /dev/zero > /dev/null & done

while true
do
 LA=`</proc/loadavg` && LA=${LA// */}
 H=$(date +%M) && H=${H/0/}
 G=`echo "(${MAXJOBS}/2)*(s(2*3.14159*${H}/60) +1 ) <= ${LA}" | bc -l`
 test ${G} -lt 1 && for i in `seq 1 $MAXJOBS` ; do  kill -SIGCONT %$i  ; done  || for i in `seq 1 $MAXJOBS` ; do  kill -SIGSTOP %$i; done
 sleep 1
done