From owner-freebsd-questions@FreeBSD.ORG Wed Jun 27 16:11:12 2012 Return-Path: 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 57C3A1065674 for ; Wed, 27 Jun 2012 16:11:12 +0000 (UTC) (envelope-from tundra@tundraware.com) Received: from ozzie.tundraware.com (ozzie.tundraware.com [75.145.138.73]) by mx1.freebsd.org (Postfix) with ESMTP id EF6988FC1B for ; Wed, 27 Jun 2012 16:11:11 +0000 (UTC) Received: from [10.219.131.188] ([66.175.245.1]) (authenticated bits=0) by ozzie.tundraware.com (8.14.5/8.14.5) with ESMTP id q5RGB36r092145 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Wed, 27 Jun 2012 11:11:03 -0500 (CDT) (envelope-from tundra@tundraware.com) Message-ID: <4FEB30A0.4020306@tundraware.com> Date: Wed, 27 Jun 2012 11:11:12 -0500 From: Tim Daneliuk Organization: TundraWare Inc. User-Agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120615 Thunderbird/13.0.1 MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: <4FEB25E8.6000701@tundraware.com> <4FEB27DA.1090308@tundraware.com> In-Reply-To: <4FEB27DA.1090308@tundraware.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (ozzie.tundraware.com [75.145.138.73]); Wed, 27 Jun 2012 11:11:03 -0500 (CDT) X-TundraWare-MailScanner-Information: Please contact the ISP for more information X-TundraWare-MailScanner-ID: q5RGB36r092145 X-TundraWare-MailScanner: Found to be clean X-TundraWare-MailScanner-From: tundra@tundraware.com X-Spam-Status: No Cc: Aleksandr Miroslav Subject: Re: shell scripting: grepping multiple patterns, logically ANDed 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, 27 Jun 2012 16:11:12 -0000 On 06/27/2012 10:33 AM, Tim Daneliuk wrote: > On 06/27/2012 10:25 AM, Tim Daneliuk wrote: >> On 06/27/2012 09:25 AM, Aleksandr Miroslav wrote: >>> hello, >>> >>> I'm not sure if this is the right forum for this question, but here >>> goes. >>> >>> I have the following in a shell script: >>> >>> >>> #!/bin/sh >>> >>> if [ "$#" -eq "0" ]; then >>> find /foo >>> fi >>> if [ "$#" -eq "1" ]; then >>> find /foo | grep -i $1 >>> fi >>> if [ "$#" -eq "2" ]; then >>> find /foo | grep -i $1 | grep -i $2 >>> fi >>> if [ "$#" -eq "3" ]; then >>> find /foo | grep -i $1 | grep -i $2 | grep -i $3 >>> fi >>> >>> Is there an easier/shorter way to do this? If there are 15 arguments >>> supplied on the command line, I don't necessarily want to build 15 if >>> statements. >>> >>> Thanks in advance for your answers. >> >> The following solution relies on the fact that you can include multiple >> patterns for grep to match with the '-e' argument: >> >> >> #!/bin/sh >> >> PATTERNS=`echo " $*" | sed s/\ /\ -e\ /g` >> >> find /foo | grep $PATTERNS >> >> Notice that when constructing the $PATTERNS string out of the command line >> args, you have to quote them with a prepended space character. That's because >> the subsequent 'sed' substitution needs to find a space *before* each argument >> which it then replaces with "-e ". >> > > Whoops, I just realized that I ORed them and you want them ANDed. Hmmm ... must > go think on that... OK, here is an ANDing version: #!/bin/sh PATMATCH=`echo " $*" | sed s/' '/' | grep '/g` eval "find ./ $PATMATCH" -- ----------------------------------------------------------------------- Tim Daneliuk