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Subject: RE: How to increase the memory available to diff in cygwin 1.7?
Date: Mon, 26 Oct 2009 17:36:31 -0400
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From: "Don Porges" <dporges AT chipwrights DOT com>
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-----Original Message-----
From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com] On Behalf
Of Buchbinder, Barry (NIH/NIAID) [E]
Sent: Monday, October 26, 2009 2:49 PM
To: cygwin AT cygwin DOT com; Kenneth Chiu
Subject: RE: How to increase the memory available to diff in cygwin 1.7?

Kenneth Chiu sent the following at Monday, October 26, 2009 2:29 PM
>
>Considering that I only want to know whether or not two files differ,=20
>this should not require any significant memory usage. (In other words,=20
>don't use mmap().)

If you only want to know whether or not they are identical, use cmp.

- Barry

"Get the right tool for the right job."

---------------------------

According to his original post, Kenneth was using

$ diff -rq B B2 >diff.out

The -q is the "just tell me if they're the same" option; given that it
exists at all, it is a little odd that it doesn't do the equivalent of a
cmp.

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