From owner-freebsd-questions@FreeBSD.ORG  Tue Aug  8 15:43:13 2006
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: freebsd-questions@freebsd.org
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 3DDA516A500
	for <freebsd-questions@freebsd.org>;
	Tue,  8 Aug 2006 15:43:13 +0000 (UTC)
	(envelope-from david.robillard@gmail.com)
Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.174])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8F0BA43D46
	for <freebsd-questions@freebsd.org>;
	Tue,  8 Aug 2006 15:43:12 +0000 (GMT)
	(envelope-from david.robillard@gmail.com)
Received: by ug-out-1314.google.com with SMTP id m2so531643uge
	for <freebsd-questions@freebsd.org>;
	Tue, 08 Aug 2006 08:43:11 -0700 (PDT)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com;
	h=received:message-id:date:from:to:subject:cc:mime-version:content-type:content-transfer-encoding:content-disposition;
	b=D30+XJpIyzrKGvKpEngt6+X+qq4Rd7B0PSqkjTclCukLFgnUj2y+GTJaKqXXYRIwJGHqen1TsdmcwEAxm9CKmJtnsufVKOg7HS29ar2OrZe2LAQy0EVsXy2uzcgUhDDngCMkvoBr+6qoqXOagcQbfhvNs3butfAAwfeHOX5+ge4=
Received: by 10.67.100.12 with SMTP id c12mr9687113ugm;
	Tue, 08 Aug 2006 08:43:11 -0700 (PDT)
Received: by 10.67.28.15 with HTTP; Tue, 8 Aug 2006 08:43:11 -0700 (PDT)
Message-ID: <226ae0c60608080843u4facbe83ibefa549f47aba9cb@mail.gmail.com>
Date: Tue, 8 Aug 2006 11:43:11 -0400
From: "David Robillard" <david.robillard@gmail.com>
To: "Odhiambo Washington" <wash@wananchi.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Cc: FreeBSD Questions Mailing List <freebsd-questions@freebsd.org>
Subject: Re: How to filter the contents of two text files.
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 08 Aug 2006 15:43:13 -0000

> Some little help is needed here ...
>
> I have two text files, each has just a single column of data
>
> FileA has 2798 entries, while FileB has 4242 entries; There are
> entries in FileA that are also in FileB...
>
> I'd like to filter against the two files, so I only get those entries
> in FileB that don't occur only in FileA ....

There are a couple of commands to do exactly what you want.

comm(1) -- select or reject lines common to two files
http://www.freebsd.org/cgi/man.cgi?query=comm&apropos=0&sektion=0&manpath=FreeBSD+6.1-RELEASE&format=html

diff(1) -- find differences between two files
http://www.freebsd.org/cgi/man.cgi?query=diff&apropos=0&sektion=0&manpath=FreeBSD+6.1-RELEASE&format=html

sort(1) -- sort lines of text files
http://www.freebsd.org/cgi/man.cgi?query=sort&apropos=0&sektion=0&manpath=FreeBSD+6.1-RELEASE&format=html

Enjoy!

DA+
-- 
David Robillard
UNIX systems administrator & Oracle DBA
CISSP, RHCE & Sun Certified Security Administrator
Montreal: +1 514 966 0122