Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site talcott.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!genrad!panda!talcott!lotto
From: lotto@talcott.UUCP (Jerry Lotto)
Newsgroups: net.micro.pc,net.micro
Subject: Re: null as variable in batch file
Message-ID: <564@talcott.UUCP>
Date: Tue, 11-Feb-86 08:45:54 EST
Article-I.D.: talcott.564
Posted: Tue Feb 11 08:45:54 1986
Date-Received: Wed, 12-Feb-86 21:39:23 EST
References: <534@whuts.UUCP>
Distribution: net
Organization: Harvard Univ. Chem. Dept.
Lines: 16
Xref: watmath net.micro.pc:6917 net.micro:13768

In article <534@whuts.UUCP>, 2212msr@whuts.UUCP (ROBIN) writes:
> Does anyone know how to detect a null as variable input in a batch file?

	The simplest solution is:

	if %1.==. goto null
... process
	:null
	echo No input on command line
-- 

Gerald Lotto - Harvard Chemistry Dept.

 UUCP:  {seismo,harpo,ihnp4,linus,allegra,ut-sally}!harvard!lhasa!lotto
 ARPA:  lotto@harvard.EDU
 CSNET: lotto%harvard@csnet-relay