From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org)
	by finch.gentoo.org with esmtp (Exim 4.60)
	(envelope-from <gentoo-user+bounces-69767-garchives=archives.gentoo.org@gentoo.org>)
	id 1IYOFE-000128-FW
	for garchives@archives.gentoo.org; Thu, 20 Sep 2007 15:47:13 +0000
Received: from robin.gentoo.org (localhost [127.0.0.1])
	by robin.gentoo.org (8.14.0/8.14.0) with SMTP id l8KFc3Qd023048;
	Thu, 20 Sep 2007 15:38:03 GMT
Received: from bane.moelleritberatung.de (bane.moelleritberatung.de [77.37.2.25])
	by robin.gentoo.org (8.14.0/8.14.0) with ESMTP id l8KFVTYs014795
	for <gentoo-user@lists.gentoo.org>; Thu, 20 Sep 2007 15:31:30 GMT
Received: by bane.moelleritberatung.de (Postfix, from userid 1006)
	id 0EE575BAD5; Thu, 20 Sep 2007 17:31:25 +0200 (CEST)
Date: Thu, 20 Sep 2007 17:31:25 +0200
From: Frank Gruellich <frank@der-frank.org>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] OT:  Bash question
Message-ID: <20070920153125.GB10595@der-frank.org>
Mail-Followup-To: gentoo-user@lists.gentoo.org
References: <46F23395.7030305@sbcglobal.net>
Precedence: bulk
List-Post: <mailto:gentoo-user@lists.gentoo.org>
List-Help: <mailto:gentoo-user+help@gentoo.org>
List-Unsubscribe: <mailto:gentoo-user+unsubscribe@gentoo.org>
List-Subscribe: <mailto:gentoo-user+subscribe@gentoo.org>
List-Id: Gentoo Linux mail <gentoo-user.gentoo.org>
X-BeenThere: gentoo-user@gentoo.org
Reply-to: gentoo-user@lists.gentoo.org
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <46F23395.7030305@sbcglobal.net>
X-PGP-Key: http://www.der-frank.org/about/frank.gpg.asc
User-Agent: Mutt/1.5.13 (2006-08-11)
X-Archives-Salt: d2aee28f-a30f-4761-bfd8-2102cc8479fb
X-Archives-Hash: a004c0ada7d652f75451205d40afc954

* Anthony E. Caudel <tony.caudel@sbcglobal.net> 20. Sep 07:
> Is there any way to make "pushd" and "popd" (Bash built-ins) silent?
> [snip] For example:
> 
> OLD_VER=$(pushd /boot; ls kernel-* | sort | head -1; popd)
> echo $OLD_VER
> /boot ~ kernel-2.6.22-gentoo-r2 ~

For that exact example... why you bother at all?  $( ) opens a subshell
and cd's in subshells don't interact with parent shell so you could
simply write:

 OLD_VER=$(cd /boot; ls kernel-* | sort | head -1)

or

 OLD_VER=`cd /boot; ls kernel-* | sort | head -1`

if you want to be more compatible.  Or am I missing a point?

HTH, kind regards,
 Frank.
-- 
Sigmentation fault
-- 
gentoo-user@gentoo.org mailing list