Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!sun-barr!cs.utexas.edu!uunet!lll-winken!indri!aplcen!bink
From: bink@aplcen.apl.jhu.edu (Ubben Greg)
Newsgroups: comp.sources.wanted
Subject: Re: Day of week routine
Summary: Use SED (as always)
Message-ID: <1331@aplcen.apl.jhu.edu>
Date: 28 May 89 02:39:28 GMT
References: <234@zeek.UUCP> <9490003@hpsal2.HP.COM>
Reply-To: bink@aplcen.apl.jhu.edu (Greg Ubben)
Organization: The Johns Hopkins University, Baltimore MD
Lines: 19

In article <9490003@hpsal2.HP.COM> (Michael Morrell) writes:
>
> Nice try, but the script unfortunately relies on each week in cal's output
> to have seven numbers in it.  It fails on days in the first week of a month
> if it does not start on a Sunday (e.g., try "dow 5 1 89").

Well I guess this discussion gives me license to post the CAL|SED solution
I mailed to the original poster (entirely useless for his application I'm
sure) :-)  No error-checking and inefficient, but correct none-the-less.

# USAGE:  dow [day [month [year]]]
set `date +"${1:-%d} ${2:-%m} ${3:-19%y}"`
cal $2 $3 | sed -n "
	s/.*/SunMonTueWedThuFriSat & /
	1!s/.*\([A-Z]..\).\{18\}  *$1 .*/\1/p
"

						-- Greg Ubben "A SED fanatic"
						   bink@aplcen.apl.jhu.edu