:
##########################################################################
# Shellscript:	periodic - periodically execute command
# Version    :	0.1 (beta)
# Author     :	Heiner Steven (heiner.steven@odn.de)
# Date       :	03-03-95
# SCCS-Id.   :	$Id: periodic,v 1.1.1.1 1999/06/15 19:29:05 heiner Exp $
##########################################################################
# Description
#
##########################################################################

PN=`basename $0`			# program name
VER='0.1 (beta)'

DefInterval=5

Usage () {
    echo "$PN - periodically execute command, $VER (stv '95)
usage: $PN [-t seconds] command [argument ...]
    -t:  interval length (in seconds, default is $DefInterval s)" >&2
    exit 1
}

set -- `getopt t:h "$@"`
while [ $# -gt 0 ]
do
    case "$1" in
	-t)	Interval="$2"; shift;;
	--)	shift; break;;
	-h)	Usage;;
	-*)	Usage;;
	*)	break;;			# Command name
    esac
    shift
done

[ $# -lt 1 ] && Usage

eval "$@"
while sleep ${Interval:=$DefInterval}
do
    eval "$@"
done