From owner-freebsd-questions@FreeBSD.ORG Tue Jul 15 21:50:27 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4220D1065675 for ; Tue, 15 Jul 2008 21:50:27 +0000 (UTC) (envelope-from kline@thought.org) Received: from aristotle.thought.org (ns1.thought.org [209.180.213.210]) by mx1.freebsd.org (Postfix) with ESMTP id CA4EA8FC12 for ; Tue, 15 Jul 2008 21:50:26 +0000 (UTC) (envelope-from kline@thought.org) Received: from thought.org (tao.thought.org [10.47.0.250]) (authenticated bits=0) by aristotle.thought.org (8.14.2/8.14.2) with ESMTP id m6FLoVOL080622; Tue, 15 Jul 2008 14:50:31 -0700 (PDT) (envelope-from kline@thought.org) Received: by thought.org (nbSMTP-1.00) for uid 1002 kline@thought.org; Tue, 15 Jul 2008 14:50:26 -0700 (PDT) Date: Tue, 15 Jul 2008 14:50:24 -0700 From: Gary Kline To: David Kelly Message-ID: <20080715215024.GA82902@thought.org> References: <20080714201241.GA22443@thought.org> <20080715073651.P1638@wojtek.tensor.gdynia.pl> <20080715183500.GA76088@thought.org> <20080715190224.GC21840@Grumpy.DynDNS.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080715190224.GC21840@Grumpy.DynDNS.org> User-Agent: Mutt/1.4.2.3i X-Organization: Thought Unlimited. Public service Unix since 1986. X-Of_Interest: With 21++ years of service to the Unix community. X-Spam-Status: No, score=-4.4 required=3.6 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.2.3 X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on aristotle.thought.org Cc: Wojciech Puchar , FreeBSD Mailing List Subject: Re: why is this script failing? 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: Tue, 15 Jul 2008 21:50:27 -0000 On Tue, Jul 15, 2008 at 02:02:24PM -0500, David Kelly wrote: > On Tue, Jul 15, 2008 at 11:35:00AM -0700, Gary Kline wrote: > > On Tue, Jul 15, 2008 at 07:37:02AM +0200, Wojciech Puchar wrote: > > > > > > > > why is this script not finding them? > > > > > > > > > > > >wav=/tmp/kde-kline/\*wav\* > > > > > > why you put \ before * > > > > to allow the shell to catch various formsof strings with "wav" > > embedded. > > I questioned that escape earlier. > > Without the \ escape the variable ${wav} will contain all the files > matching the pattern. But with the escape it will literally be > "/tmp/kde-kline/*wav*". Wildcard expansion doesn't occur until later > when Gary does something like this: > > rm ${wav} > > which is processed as if he had just now typed: > > rm /tmp/kde-kline/*wav* > > while without the escape it might appear like this: > > rm /tmp/kde-kline/file1.wav /tmp/kde-kline/file2.wav > > Is probably best to postpone wildcard expansion until the last moment > because if any of the filenames contain spaces the space will probably > cause a break between arguments. The first time the wildcard expands to > a filename with a space the space will be escaped. But the second time > you use it that escape is lost. So its best to expand it in the place > its needed. > thanks for this clarification! until yesterday, whe you mmentioned blanks[whitespace], as id a song title, i hadn't tought about songs like "Not Ready to Make Nice.ogg" e.g. I am not sure why these players store the song in wav format without deleting the files, but when my limited /tmp is full, certain aps fail mysteriously. with a fwdozen more line of code they could at least fail more gracefully. -g > -- > David Kelly N4HHE, dkelly@HiWAAY.net > ======================================================================== > Whom computers would destroy, they must first drive mad. -- Gary Kline kline@thought.org www.thought.org Public Service Unix http://jottings.thought.org http://transfinite.thought.org