From:	Weiqi Gao <weiqigao AT a DOT crl DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: a good expr for dos?
Date:	Thu, 05 Aug 1999 19:59:39 -0500
Organization:	CRL Network Services
Lines:	28
Message-ID:	<37AA337B.432FB4D0@a.crl.com>
References:	<808AC89C053FE1A5 DOT D5D223F7B99B2E46 DOT 30EF7E9024856B46 AT lp DOT airnews DOT net>
NNTP-Posting-Host:	a116004.stl1.as.crl.com
Mime-Version:	1.0
X-Mailer:	Mozilla 4.6 [en] (X11; I; Linux 2.0.36 i586)
X-Accept-Language:	en
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

- carlo - wrote:
> 
> Can anyone recommend a good expr for dos?
> Preferebly one that will run on OpenDOS without csDPMI, however.
> I've found several good ones, but not yet one that will evaluate expressions
> like 3>1.

The one in
ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/shl112b.zip does
expressions like 3>1 just fine.  You simply have to note that the
greater than sign (>) is a special character for the shell and need to
be properly escaped.

In COMMAND.COM:
D:\TEMP> expr 3 ">" 1
1
D:\TEMP> expr 3 "<" 1
0

In bash:
/temp $ expr 3 \> 1
1
/temp $ expr 3 \< 1
0

-- 
Weiqi Gao
weiqigao AT a DOT crl DOT com

- Raw text -