#!/bin/sh

SLEEP=10
MAX=0
SLEEP_CMD="sleep"

Usage="
$0 <options> cmd
options
	-c <MAX>
	-s, -n <SLEEP>
	-m <MILLISEC>
"
# Process args:

while [ "$1" != "" ]
do
    case $1 in 
	"-c"*) shift; MAX="$1";
                ;;
	"-s"*) shift; SLEEP="$1";
                ;;
	"-m"*) shift;	if type usleep > /dev/null 2>&1; then
				SLEEP="`expr $1 \* 1000`"; SLEEP_CMD="usleep"
			else
				SLEEP="$1"; SLEEP_CMD="msleep"
			fi
                ;;
	"-n"*) shift; SLEEP="$1";
                ;;
	"-h"*) echo "$Usage"; exit 0;
                ;;
	*)	break
                ;;
    esac
    shift
done

cnt=0;
while [ 1 ]
do
	cnt=`expr $cnt + 1`

	if [ "$1" != "" ]; then
		eval $*
	else 
		date; uptime
	fi

	if [ "$MAX" != "0" -a $cnt -gt $MAX ] ; then
		echo "exiting after $MAX loops."
		break;
	fi
	$SLEEP_CMD $SLEEP
done

exit 0