From owner-freebsd-questions@FreeBSD.ORG Thu Jun 24 09:18:22 2010 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 3CC2C1065672 for ; Thu, 24 Jun 2010 09:18:22 +0000 (UTC) (envelope-from freebsd.user@seibercom.net) Received: from mail-vw0-f68.google.com (mail-vw0-f68.google.com [209.85.212.68]) by mx1.freebsd.org (Postfix) with ESMTP id D90D68FC12 for ; Thu, 24 Jun 2010 09:18:21 +0000 (UTC) Received: by vws16 with SMTP id 16so197522vws.7 for ; Thu, 24 Jun 2010 02:18:20 -0700 (PDT) Received: by 10.220.63.5 with SMTP id z5mr4940307vch.100.1277371100596; Thu, 24 Jun 2010 02:18:20 -0700 (PDT) Received: from scorpio.seibercom.net (c-67-189-160-65.hsd1.ny.comcast.net [67.189.160.65]) by mx.google.com with ESMTPS id b5sm18508211vco.12.2010.06.24.02.18.19 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 24 Jun 2010 02:18:19 -0700 (PDT) Received: from scorpio (zeus [192.168.1.1]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: FreeBSD.user@scorpio.seibercom.net) by scorpio.seibercom.net (Postfix) with ESMTPSA id 683A2E5482F for ; Thu, 24 Jun 2010 05:08:33 -0400 (EDT) Date: Thu, 24 Jun 2010 05:08:32 -0400 From: Jerry To: freebsd-questions@freebsd.org Message-ID: <20100624050832.06ef2a46@scorpio> In-Reply-To: <20100624033257.2D074BEA6@kev.msw.wpafb.af.mil> References: <4C22B3D7.6070102@comclark.com> <20100624033257.2D074BEA6@kev.msw.wpafb.af.mil> Organization: seibercom.net X-Mailer: Claws Mail 3.7.6 (GTK+ 2.20.1; amd64-portbld-freebsd8.0) Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAG1BMVEX3/uPVnZf2/v9ejGkqHB74++H///+cHCT3m6cgqYvfAAACbElEQVQ4jWXTQW/bIBQAYJLJuRMn8TVCss9zTdrrXJ6bHe1Ej/bossF9EpJ3nbapf3sP8JxOQ4qV8OU9HvjBROWcYNlKHtxlQ1/huBaOBiMwQtgHhbokMLIT76Acps5hvy61+6WsjkCZzNEW0+fcQ7Nl5uoPCegjjjhN5/MEABd89k9hXkQoX6cwPIDKCt8tYG5wpmdrxAyuolTPqpiVoEpVCWvl6e00RAD4JBJQnO4lvv0O4Cnd3WUGevYNFohxFYAy7jCCtW39LaQK8BgDAgiHVinVJlCiFKlcqgEHfwb1EuG+DwFGMO3oCIuJIEYoa8KJECBB+UBldgm0MQmEGz7GQr8XYRPKzYNO1zZ8mgdAu4BG5Ke/4KFboM8458UScViAAvYD93OAsu+Bc3zxCU7ZAjT74+dQv9K7oO0d1wuscop48Pc50O5bcVwgGzh/mXzaizJuAWERh8k3eaxKmxu4kV1p2XOEg3i3c8M+EKR93P0D1KATpC55vMHaGqFf5f/AwhlrhHgg8DTezopt6I3o3Qx4q4q6YaPxK8RxcClXeFGhTTS++QR6TS/oBs7l4WhzuNMubZG6hIBkF4qqZVdWczIqSrjKVF/i4o26IP2oElBGFy5CXKSnf6UWDTC6zKSqoAvzsakjjBvdzLKnmxdhY8eRsX7VSCUBdgD1hVJpx6y2OOS1DNDILYmqdWUJ+oHvd0rRvAqX5kpxQMR6yxHzPV6VlPFyWE7LKc36keNQI64gLP8Ybgtmg+zYuBl4fuI8VqW2RqDGE8Uzu7GxGa803whDdxx3bSZbRhfQUSxvmnpLZWpRFqHz7v8AvsBe0S1zv9UAAAAASUVORK5CYII= Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: Re: .sh check for numeric content X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-questions@freebsd.org List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jun 2010 09:18:22 -0000 On Wed, 23 Jun 2010 23:32:57 -0400 (EDT) Karl Vogel articulated: > >> On Thu, 24 Jun 2010 09:24:39 +0800, > >> Aiza said: > > A> Receiving a variable from the command line that is suppose to > A> contain numeric values. How do I code a test to verify the > A> content is numeric? > > The script below will work with the Bourne or Korn shell. > Results for "0 1 12 1234 .12 1.234 12.3 1a a1": > > 0 is numeric > 1 is numeric > 12 is numeric > 1234 is numeric > .12 is numeric > 1.234 is numeric > 12.3 is numeric > 1a is NOT numeric > a1 is NOT numeric I had used this snippet in a script to test for numeric input. It was part of a function in a Bash script. case "${1}" in [[:digit:]] ) IS_DIGIT=1 ;; * ) IS_DIGIT=0 printf "\n\a\t *****WARNING***** \tYou must enter a digit\n\n" ;; esac -- Jerry ✌ FreeBSD.user@seibercom.net Disclaimer: off-list followups get on-list replies or get ignored. Please do not ignore the Reply-To header. __________________________________________________________________ Why do we want intelligent terminals when there are so many stupid users?