From owner-freebsd-questions@freebsd.org Wed Feb 3 03:53:28 2016 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2D167A736A1 for ; Wed, 3 Feb 2016 03:53:28 +0000 (UTC) (envelope-from sm@ara-ler.com) Received: from mail-ob0-x235.google.com (mail-ob0-x235.google.com [IPv6:2607:f8b0:4003:c01::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id EDA11DBF for ; Wed, 3 Feb 2016 03:53:27 +0000 (UTC) (envelope-from sm@ara-ler.com) Received: by mail-ob0-x235.google.com with SMTP id wb13so13256874obb.1 for ; Tue, 02 Feb 2016 19:53:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ara-ler-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; bh=0nbBehKzoZ6G3Pt+ipnWeTqnfjAiDVuZN73L691l0Sk=; b=WGbCDlUSTHzx1LjWkfT7e7LSaocMqlYKzZh9yNc8Hs5d44lAjf+ZVh/N4cp193TJNy 0Tnf2/oyehlt+nnAlTGS20rlkmTuOnWd8vbhbSEZ01fek4mu6ts3gwuboSXa0DIZd0I5 6wmF62ZX/uGwQYml/ruuGK8MiwXQZX2IVs61xzazmPIdhPp0UD5gv7BxlCXqYSE5h/TC D1yp4TTQB0i/ghb0aaOCVAJfCmZ7eFAPQDHZb122B8o6gJJJFk1L/EAWSDokza2N3ZPt NQhrkTHnMqOKois9gpW7EmkYM2gSDNWoB8OmUjbl6Je+Zh0op5RdG92My4RpnZTtGVzq Hriw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-type:content-disposition:in-reply-to :user-agent; bh=0nbBehKzoZ6G3Pt+ipnWeTqnfjAiDVuZN73L691l0Sk=; b=ZgBG7IsMuU/9GVgc0Iqvlteq7zrKkIiugzp8qvD9P/2+G4XqbYB50DaSsCUfasweVV +eOxXH2N61KXhIPH4DxjWxzaRTbSNqgRhjtuqIujibj5z8l6LmyotG/b18lqaRSEH1fy ttVqs+wBCdugl6XJgDDDDKOTr5CNLy8iRb1RcJG/nPiC+a685ft3lDJtiUaTJvSDSPxT uE/GIDcTNadiJt7Yr60kjEelJ7tW9LnAI+GlCY+PZmHs3qDZAZSgRfT1JG170cvDmS3E 4QiltYzcwu3/xY9a+z6ud5jxLAC6WkynM32OJhv3MWN+W7+X29i8ZEIN/aggoKb9qeVq S4nA== X-Gm-Message-State: AG10YOS92zxpGqyd4J8MwRj5OqdazaVTydkk4mJrLjG6tfF3aEKB14b8L7ckchxmbBu05g== X-Received: by 10.60.47.7 with SMTP id z7mr27252910oem.66.1454471607215; Tue, 02 Feb 2016 19:53:27 -0800 (PST) Received: from dendrobates.araler.com (75-166-211-166.hlrn.qwest.net. [75.166.211.166]) by smtp.gmail.com with ESMTPSA id q4sm2716160oew.6.2016.02.02.19.53.26 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 02 Feb 2016 19:53:26 -0800 (PST) Date: Tue, 2 Feb 2016 20:53:24 -0700 From: Sergey Manucharian To: Ernie Luzar Cc: Freebsd Questions Subject: Re: sh script help with numeric values Message-ID: <20160203035324.GH1828@dendrobates.araler.com> References: <56B1765D.2060800@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <56B1765D.2060800@gmail.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Feb 2016 03:53:28 -0000 Hello Ernie, Excerpts from Ernie Luzar's message from Wed 03-Feb-16 11:39: > Hello list > > I am having trouble getting leading zeros to show up. > The following is an example of what i mean. > > dirname="dir" > dup_count=000 > dup_times=5 > > while [ "${dup_count}" -ne "${dup_times}" ]; do > dup_count=$(( $dup_count + 001 )) > dname="${dirname}-${dup_count}" > echo "${dname}" > done > > Outputs this > dir-1 > dir-2 > dir-3 > dir-4 > dir-5 > > What I really want to see is this > dir-001 > dir-002 > dir-003 > dir-004 > dir-005 > dir-013 > dir-111 > ect > > How do I get the leading zeros to show? This is an arithmetic expression: dup_count=$(( $dup_count + 001 )) which gives calculate a number, you don't need to use leading zeros. Use "printf" instead of "echo" to output the result. Example: $ A=3 $ printf "%03d\n" $A $ 003 -- Sergey