From owner-freebsd-questions@FreeBSD.ORG  Mon Sep 25 15:31:29 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 263BD16A417
	for <freebsd-questions@freebsd.org>;
	Mon, 25 Sep 2006 15:31:29 +0000 (UTC)
	(envelope-from arindam.mukerjee@gmail.com)
Received: from py-out-1112.google.com (py-out-1112.google.com [64.233.166.179])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 981E443D79
	for <freebsd-questions@freebsd.org>;
	Mon, 25 Sep 2006 15:31:22 +0000 (GMT)
	(envelope-from arindam.mukerjee@gmail.com)
Received: by py-out-1112.google.com with SMTP id o67so2528645pye
	for <freebsd-questions@freebsd.org>;
	Mon, 25 Sep 2006 08:31:21 -0700 (PDT)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com;
	h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition;
	b=aU8Ap4M5aGp4mBcSv9kjtMuZq9ml0gns8AZhwwr5XK1ZTxEMb8qok/qgdXpG0of+0QCsQt8Td9ziyFfAxMiMztAp2Nn2Qmd7QDQe9yTRz2KRyyQCVZZ91gfu9rbySe2ryjnyRHJZ2P+EM4X7M6yaHXOrlR0IFswlNAPDmRbdOsw=
Received: by 10.35.78.9 with SMTP id f9mr7990678pyl;
	Mon, 25 Sep 2006 08:31:21 -0700 (PDT)
Received: by 10.35.13.5 with HTTP; Mon, 25 Sep 2006 08:31:10 -0700 (PDT)
Message-ID: <d85a51ff0609250831x76b9ff15j7c1c2d3e62976802@mail.gmail.com>
Date: Mon, 25 Sep 2006 21:01:10 +0530
From: Arindam <arindam.mukerjee@gmail.com>
To: freebsd-questions@freebsd.org
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Subject: Korn Shell [[ ... ]] operator
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: Mon, 25 Sep 2006 15:31:29 -0000

I know csh is the shell of choice on FreeBSD. But I have this question
on Korn Shell and it would be great if somebody could explain.

Can someone tell me a little more about the Korn Shell [[ ... ]]
double-brackets construct used for comparing string expressions. How
does it differe from the standard [ ... ] single brackets.

You could tell me to RTFM but I haven't gleaned enough clarity from
such efforts already expended.

It would be great if you could give some idea through examples.

Cheers,
Andy
--