Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!caen!ox.com!math.fu-berlin.de!unidui!unido!mikros!mwtech!martin
From: martin@mwtech.UUCP (Martin Weitzel)
Newsgroups: comp.unix.questions
Subject: Re: need AWK help: lowercase, trim trailing spaces
Keywords: awk
Message-ID: <1134@mwtech.UUCP>
Date: 9 May 91 14:32:21 GMT
References: <1817@wjvax.UUCP> <1991Apr20.075507.17530@midway.uchicago.edu> <1991Apr20.220114.8727@colorado.edu>
Reply-To: martin@mwtech.UUCP (Martin Weitzel)
Organization: MIKROS Systemware, Darmstadt/W-Germany
Lines: 24

In article <1991Apr20.220114.8727@colorado.edu> lewis@tramp.Colorado.EDU (LEWIS WILLIAM M JR) writes:
>To prevent printing blank lines, simply do (in awk):
>
>	address = substr(...   )
>	if (length(adress) > 0)
>		print address

Still simpler:

	address = substr(...   )
	if (address)
		print address

Or:
	# assign substring to adress and print if not empty
	if (address = substr(...   ))
		print address

BE WARNED: I explicitly wrote a comment in front of the if statement.
So don't start a discussion thread whether it is obscure, good, bad,
professional or whatever programming style to write assignments within
conditional contexts :-)
-- 
Martin Weitzel, email: martin@mwtech.UUCP, voice: 49-(0)6151-6 56 83