From owner-freebsd-questions@freebsd.org Wed Feb 1 20:56:07 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 65050CCC3CA for ; Wed, 1 Feb 2017 20:56:07 +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 34D6F1165 for ; Wed, 1 Feb 2017 20:56:06 +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 5F1D26231B; Wed, 1 Feb 2017 15:56:05 -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 cjFnl0ew9L0R; Wed, 1 Feb 2017 15:56:03 -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 152C862051; Wed, 1 Feb 2017 15:56:03 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=harte-lyne.ca; s=dkim_hll; t=1485982563; bh=CG95/u7nvIbNLT7XUvSH7GSZzxr8M8qo7uxD9tR2kiE=; h=In-Reply-To:References:Date:Subject:From:To:Cc:Reply-To; b=OxNQB3/vG/uktdS0msYOrE42qiSKLGuMGo3sX2LwBY6LqK50t/MQCZ00IhtkC8d9/ qUPPgyfoh1g9xfkg99lAizmBgmP93QoyqiPEMCT0vx5YoUNVYZeHgJ5Yv553wCdNKE oe7UkJgNYlGSXzjPTpNxyH4G35S91QdjIEWcxHuNgaZG+Aqrighh9i11g3TTnUv0mx K+pQHcnIqGSG2UfJQkKNUTa/vbXLgehMAQxxZp8TDHshStEIGa3V9gK84ZnKFQwYC3 yeGf0s4G67E/R+Wz5YqRqXqsmVDidyWiDwRqxaKW3f5/HxN6ldakNfM1gle3L/FtQy ecrPdGa+qGYEQ== Received: from 216.185.71.44 (SquirrelMail authenticated user byrnejb_hll) by webmail.harte-lyne.ca with HTTP; Wed, 1 Feb 2017 15:56:03 -0500 Message-ID: In-Reply-To: <20170201211631.a65c3b9b.freebsd@edvax.de> References: <20170131161824.a9f1ef46.freebsd@edvax.de> <20170131185103.7f911dfb.freebsd@edvax.de> <5f51e2c3bdb8a20c6a7786c2b345c957.squirrel@webmail.harte-lyne.ca> <20170131200143.00c5e5da.freebsd@edvax.de> <84861d4906923faec222f96580833c2f.squirrel@webmail.harte-lyne.ca> <20170201211631.a65c3b9b.freebsd@edvax.de> Date: Wed, 1 Feb 2017 15:56:03 -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: Wed, 01 Feb 2017 20:56:07 -0000 On Wed, February 1, 2017 15:16, Polytropon wrote: > In a worst case scenario, rely on what the system provides, and > don't try to override those defaults without good reasons and > sufficient precaution (like a statically linked /bin/bash for > example). There is almost nothing worse than a system that > successfully boots into single user mode, but then surprisingly > cannot start a shell... ;-) > I installed bash-static on all our FreeBSD hosts. I would love to solely rely on what the base system provides but sadly I have never encountered a case with any OS where that is true. And rewriting my admin scripts to sh from bash is a task that I simply do not have time for at the moment. Enumerating bash-static along with postfix, sudo, tmux, tree, vim, etc., that we require for FreeBSD is quite natural and poses no particular difficulty. -- *** 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