From owner-freebsd-questions@freebsd.org Tue Jan 31 17:56:44 2017 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 2199CCCAE76 for ; Tue, 31 Jan 2017 17:56:44 +0000 (UTC) (envelope-from byrnejb@harte-lyne.ca) Received: from inet08.hamilton.harte-lyne.ca (inet08.hamilton.harte-lyne.ca [216.185.71.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "inet08.hamilton.harte-lyne.ca", Issuer "CA_HLL_ISSUER_2016" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id E7AE11C5C for ; Tue, 31 Jan 2017 17:56:43 +0000 (UTC) (envelope-from byrnejb@harte-lyne.ca) Received: from localhost (localhost [127.0.0.1]) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTP id 3937262309; Tue, 31 Jan 2017 12:56:42 -0500 (EST) X-Virus-Scanned: amavisd-new at harte-lyne.ca Received: from inet08.hamilton.harte-lyne.ca ([127.0.0.1]) by localhost (inet08.hamilton.harte-lyne.ca [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id U68JTffnzjnS; Tue, 31 Jan 2017 12:56:40 -0500 (EST) Received: from webmail.harte-lyne.ca (inet04.hamilton.harte-lyne.ca [216.185.71.24]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTPSA id 66C4B62261; Tue, 31 Jan 2017 12:56:39 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=harte-lyne.ca; s=dkim_hll; t=1485885400; bh=bYajy2HBpZVXE8eRbLQI5OxhXX8hQR+8qtduc5FpAeo=; h=In-Reply-To:References:Date:Subject:From:To:Cc:Reply-To; b=R/31Q7GuN/cgjqI2ErA/HONNp16F0/9/7qUkOdISjC/QuYTpIn8yZ//vHSmfo9Uu+ kyl1g80FweQzCKayQmHxGeN7e2sn4/10iZwrOLY4TascqhuJrLcLOeqypWMw+yWeRo fNFCK2tRVKxFnL+iDphXmZHifwA7JGrkA5en2S/S171dchfEhkXiY+hcVupKqkC3Nw v2lRVSkYOnDyENezwSs/6+rKZDe6zThMpE3ammatpdTCEAD1aX4J8HwHyCxaYCJtLr J+663nTJqb7VlUbMZjIpAItkiJCqpKcFROzDSl5Yq1EeqbONTuhR4UbqngsdoU6q1m kbs8wfP/2wUMA== Received: from 216.185.71.44 (SquirrelMail authenticated user byrnejb_hll) by webmail.harte-lyne.ca with HTTP; Tue, 31 Jan 2017 12:56:40 -0500 Message-ID: <5f51e2c3bdb8a20c6a7786c2b345c957.squirrel@webmail.harte-lyne.ca> In-Reply-To: <20170131185103.7f911dfb.freebsd@edvax.de> References: <20170131161824.a9f1ef46.freebsd@edvax.de> <20170131185103.7f911dfb.freebsd@edvax.de> Date: Tue, 31 Jan 2017 12:56:40 -0500 Subject: Re: Variable assignment in sh From: "James B. Byrne" To: "Polytropon" Cc: freebsd-questions@freebsd.org Reply-To: byrnejb@harte-lyne.ca User-Agent: SquirrelMail/1.4.22-4.el6 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 Jan 2017 17:56:44 -0000 On Tue, January 31, 2017 12:51, Polytropon wrote: > On Tue, 31 Jan 2017 12:11:49 -0500, James B. Byrne via > freebsd-questions wrote: >> >> In any case, I now have set the shell in the root crontab file >> explicitly to /usr/local/bin/bash in hopes of avoiding this problem >> in the future. > > That _might_ introduce problems in the future when bash is not > available. My suggestion: Use /bin/sh for scripting except you > need to rely on a "bash-ism", a feature that bash can provide, > but sh cannot. However, you can use bash interactively to test > sh commands, there is "backward compatibility" (bash can be seen > as a superset of sh). > How would bash become unavailable on this particular system without someone specifically removing it? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3