From owner-freebsd-questions@FreeBSD.ORG Fri Feb 2 17:58:44 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8B94616A400 for ; Fri, 2 Feb 2007 17:58:44 +0000 (UTC) (envelope-from jerrymc@gizmo.acns.msu.edu) Received: from gizmo.acns.msu.edu (gizmo.acns.msu.edu [35.8.1.43]) by mx1.freebsd.org (Postfix) with ESMTP id 435B613C4B2 for ; Fri, 2 Feb 2007 17:58:42 +0000 (UTC) (envelope-from jerrymc@gizmo.acns.msu.edu) Received: from gizmo.acns.msu.edu (localhost [127.0.0.1]) by gizmo.acns.msu.edu (8.13.6/8.13.6) with ESMTP id l12HvF78098257; Fri, 2 Feb 2007 12:57:15 -0500 (EST) (envelope-from jerrymc@gizmo.acns.msu.edu) Received: (from jerrymc@localhost) by gizmo.acns.msu.edu (8.13.6/8.13.6/Submit) id l12HvFGL098256; Fri, 2 Feb 2007 12:57:15 -0500 (EST) (envelope-from jerrymc) Date: Fri, 2 Feb 2007 12:57:10 -0500 From: Jerry McAllister To: Dan Nelson Message-ID: <20070202175710.GA98134@gizmo.acns.msu.edu> References: <1170430862.16189.8.camel@columbus.webtent.org> <20070202163637.GC44511@dan.emsphone.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070202163637.GC44511@dan.emsphone.com> User-Agent: Mutt/1.4.2.2i Cc: Robert Fitzpatrick , FreeBSD Subject: Re: Determining daylight savings changes on BSD X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Feb 2007 17:58:44 -0000 On Fri, Feb 02, 2007 at 10:36:37AM -0600, Dan Nelson wrote: > In the last episode (Feb 02), Robert Fitzpatrick said: > > I use the following command on our CentOS Linux servers to find out > > if the system is ready for the daylight savings changes coming up, > > but it does not seem to work the same on our FreeBSD 5.4 and 6.1 > > servers. How can I do this? I see the zdump command and the man page > > seems to suggest the same usage, but... > > > > esmtp# zdump -v US/Eastern | grep 2007 > > esmtp# zdump -v US/Eastern > > US/Eastern Fri Dec 13 20:45:52 1901 UTC = Fri Dec 13 20:45:52 1901 UTC isdst=0 gmtoff=0 > > US/Eastern Sat Dec 14 20:45:52 1901 UTC = Sat Dec 14 20:45:52 1901 UTC isdst=0 gmtoff=0 > > US/Eastern Mon Jan 18 03:14:07 2038 UTC = Mon Jan 18 03:14:07 2038 UTC isdst=0 gmtoff=0 > > US/Eastern Tue Jan 19 03:14:07 2038 UTC = Tue Jan 19 03:14:07 2038 UTC isdst=0 gmtoff=0 I don't know how to read this. There was another command I saw a while back that gave similar looking information, but actually put out something for 2007. But, I can't find that mesage at the moment. > That means you need to update your zoneinfo tables. You can also use > the date command to see if you need updating: > > date -r 1173679260 > > If that prints "Mon Mar 12 02:01:00 EST 2007" you know you need to > update. Are you sure? I see the EST where mine says EDT, but mine gives the exact same date/time information as you show above outside of the EST. If I subtract out exactly one day (86400 seconds) I get: Sun Mar 11 01:01:00 EST 2007 which is just 59 minutes before the changeover. Then, if I add an hour (3600 seconds) I get: Sun Mar 11 03:01:00 EDT 2007 So, I would expect the non-updated system to give: Mon Mar 12 01:01:00 EST 2007 Or is something else really messed up? My system seems to be giving the correct current date/time. ////jerry > > -- > Dan Nelson > dnelson@allantgroup.com > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"