From owner-freebsd-questions@freebsd.org Wed Feb 1 21:20:45 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 1D254CCC88F for ; Wed, 1 Feb 2017 21:20:45 +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 DEB901EE8 for ; Wed, 1 Feb 2017 21:20:44 +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 0DCC76232B; Wed, 1 Feb 2017 16:20:43 -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 DCgwpD4hF9gb; Wed, 1 Feb 2017 16:20:41 -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 84F0B62324; Wed, 1 Feb 2017 16:20:40 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=harte-lyne.ca; s=dkim_hll; t=1485984041; bh=FIeeMOeX8Loci+ROq5QUQdIyGXlKtAxb1fqiOdWIXqE=; h=In-Reply-To:References:Date:Subject:From:To:Cc:Reply-To; b=Qrd/hTLhUTdps7CcJWWxKhF6yGRjvjp67eOH8Me1cbaLYqMTtWJVylPUDKKs08aaC WqHmIQixTiNMGNaS2Dp/upjO/s/s6+QWYHMDRxts7b9WYiWg+cv6h42lUs8sOmKucf W/iZ2HKDHCLIUdvMn9ZbzqUsDTQSxg6qP9FYivk9I2SSHkGhHlw5yT4vBUTGsXHDbv /0ajRjwiQMBmqjFiLh21sIHnMbbpjQi+YATCPX5RybwG7vdKO4R7m3jbNmESe05C7a TIHMS/NaXt2rGJpcVZ7rDmrLO8+SkYGi+wWkETG/hUxNg76bHMhAMuFTgKVGnVfepp IndZnvzYizOpg== Received: from 216.185.71.44 (SquirrelMail authenticated user byrnejb_hll) by webmail.harte-lyne.ca with HTTP; Wed, 1 Feb 2017 16:20:41 -0500 Message-ID: <509f51fbc72e12243ed86f15fb9d60fe.squirrel@webmail.harte-lyne.ca> In-Reply-To: References: <20170131161824.a9f1ef46.freebsd@edvax.de> <20170131185103.7f911dfb.freebsd@edvax.de> <5f51e2c3bdb8a20c6a7786c2b345c957.squirrel@webmail.harte-lyne.ca> Date: Wed, 1 Feb 2017 16:20:41 -0500 Subject: Re: Variable assignment in sh From: "James B. Byrne" To: "Warren Block" 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: Wed, 01 Feb 2017 21:20:45 -0000 On Tue, January 31, 2017 16:51, Warren Block wrote: > > It's important to note that shells are two things, an interactive user > interface, and a shell script interpreter. Thanks to a rich > selection, > one program does not have to be used for both. For example, I use csh > along with a large autocompletion file and some aliases and it works > very well for that. I would not write scripts for csh, though, > because > the built-in script implementation is not great. Not a problem, since > just putting #!/bin/sh as the first line of a script causes it to run > with the standard sh interpreter. > I do not alter the root account in any way other that to allow logins and ssh is configured to only accept passwordless logins for root. When I have need to login as root then I run bash from the default shell and do my work there. I have dealt with cron by specifying SHELL=/usr/local/bin/bash in root's crontab. I am not fond of shell scripts although I have written many. Most of what I put into cron jobs are one-liner shell commands and in my case I have written these for bash. -- *** 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