[*** Listing 1: weekdaynum script ***]

#!/bin/sh
#
#	weekdaynum
#
#	The 1st parameter is a number representing
#	which weekday is desired, such as the 2nd
#	Thursday, or 4th Sunday.  Returns TRUE if
#	today is that day.
#
#	Copyright, Jan 12, 1993 by Lawrence S Reznick

if [ $# -lt 1 ]
then
	exit `false`
fi

whichday=$1

set `date`

test `expr $3 % 7` -eq 0
flag=$?

test `expr $3 / 7 + $flag` -eq $whichday

[*** End of Listing 1 ***]

