From owner-freebsd-questions@FreeBSD.ORG Wed May 29 14:45:58 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 1EEEC847 for ; Wed, 29 May 2013 14:45:58 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: from mail-wi0-x22b.google.com (mail-wi0-x22b.google.com [IPv6:2a00:1450:400c:c05::22b]) by mx1.freebsd.org (Postfix) with ESMTP id AB410975 for ; Wed, 29 May 2013 14:45:57 +0000 (UTC) Received: by mail-wi0-f171.google.com with SMTP id hq7so3610999wib.4 for ; Wed, 29 May 2013 07:45:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=date:from:to:subject:message-id:in-reply-to:references:x-mailer :mime-version:content-type:content-transfer-encoding; bh=iiKN3PNIE4FLl0qqdy4g+02cOU2IWNAl+8NEEgbIod4=; b=ubR/yVT7YXnfn/ySWn7A/CBALc320uzF+aLcme+uKEB/+Q+jdyROuEiWXOVSv8xwy/ exRVBS0NsulzKASRLJ4uBv6vgONaR6pg2zTXA9kSVKu4I/jWb1SVSJ8u9d7YAYQkWphG sd/qtubvn81q2PLTzU98LtZHhUqIMFbHspRcqmuVZeptjDUoc+SCEWcGtiwFh/aCGWhx YhHPLiV95L+2WNPpEEFEvbDc8JGHBgrUrhO00yTtV8J3BnNP86xxtxQ6mv7NEJ9eE+wm WKkZR/OKuwP/YXCN5wawDGpAL+8yxOYtSWM4YU4z2sbJxqGAeXY0bmUVVqFY/A+UKCGF pjqA== X-Received: by 10.194.158.34 with SMTP id wr2mr1813475wjb.57.1369838756860; Wed, 29 May 2013 07:45:56 -0700 (PDT) Received: from gumby.homeunix.com (87-194-105-247.bethere.co.uk. [87.194.105.247]) by mx.google.com with ESMTPSA id fu14sm31718929wic.0.2013.05.29.07.45.55 for (version=SSLv3 cipher=RC4-SHA bits=128/128); Wed, 29 May 2013 07:45:56 -0700 (PDT) Date: Wed, 29 May 2013 15:45:54 +0100 From: RW To: freebsd-questions@freebsd.org Subject: Re: BSD sleep Message-ID: <20130529154554.230e4e93@gumby.homeunix.com> In-Reply-To: <698624A1-FC5F-4537-8C95-EC971CD2EE1A@kraus-haus.org> References: <20130528230140.A5B396F448@smtp.hushmail.com> <51A541B5.3010905@gmail.com> <1369801479.2670.YahooMailNeo@web190706.mail.sg3.yahoo.com> <698624A1-FC5F-4537-8C95-EC971CD2EE1A@kraus-haus.org> X-Mailer: Claws Mail 3.9.0 (GTK+ 2.24.17; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 May 2013 14:45:58 -0000 On Wed, 29 May 2013 10:01:53 -0400 Paul Kraus wrote: > Agreed. When I first started dealing with Unix professionally (1995, > I started playing with Unix-like OSes almost 10 years earlier) I was > taught that each Unix command does one thing and does it well. It would still just be doing one thing - sleeping. Support for units usually comes under "and does it well". I wouldn't want to have to pipe df through awk to get MBs, or complicate "find" with arithmetic. Unit support in sleep is a perfectly legitimate thing to ask for, I don't think it particularly useful though, and leap-second support is close to pointless.