From owner-freebsd-questions@FreeBSD.ORG Wed Jan 24 01:11:20 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2658B16A401 for ; Wed, 24 Jan 2007 01:11:20 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from mail-out3.apple.com (mail-out3.apple.com [17.254.13.22]) by mx1.freebsd.org (Postfix) with ESMTP id 0FEF213C4BB for ; Wed, 24 Jan 2007 01:11:20 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from relay7.apple.com (relay7.apple.com [17.128.113.37]) by mail-out3.apple.com (8.13.8/8.13.8) with ESMTP id l0O1BJGa028562; Tue, 23 Jan 2007 17:11:19 -0800 (PST) Received: from relay7.apple.com (unknown [127.0.0.1]) by relay7.apple.com (Symantec Mail Security) with ESMTP id DD06F30059; Tue, 23 Jan 2007 17:11:19 -0800 (PST) X-AuditID: 11807125-a224ebb000006e4c-4c-45b6b2379fa3 Received: from [17.214.13.96] (unknown [17.214.13.96]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by relay7.apple.com (Apple SCV relay) with ESMTP id C8CDA30078; Tue, 23 Jan 2007 17:11:19 -0800 (PST) In-Reply-To: References: Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <08BEFA26-04F6-45B0-83F5-0A86772A421E@mac.com> Content-Transfer-Encoding: 7bit From: Chuck Swiger Date: Tue, 23 Jan 2007 17:11:19 -0800 To: youshi10@u.washington.edu X-Mailer: Apple Mail (2.752.2) X-Brightmail-Tracker: AAAAAA== Cc: freebsd-questions@freebsd.org Subject: Re: [OT] What does this pipe do? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jan 2007 01:11:20 -0000 On Jan 23, 2007, at 5:00 PM, youshi10@u.washington.edu wrote: > I know this is a Unix shell command, and off-topic, but I'm > curious. I've been reading a few 'make' commands at work that end > in "|&" and I was wondering if that redirection string is > synonymous to "| /dev/stdout". In csh/tcsh shells, that construct means to pipe stderr of the first process into stdin of the second process in the pipeline. -- -Chuck