Date: Fri, 02 Feb 2007 10:41:02 -0500 From: Robert Fitzpatrick <lists@webtent.net> To: FreeBSD <freebsd-questions@freebsd.org> Subject: Determining daylight savings changes on BSD Message-ID: <1170430862.16189.8.camel@columbus.webtent.org>
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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 The Linux version spits out all years, hence the need for grep: [root@tpa-hosting ~]# zdump -v US/Eastern |grep 2007 US/Eastern Sun Mar 11 06:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 EST isdst=0 gmtoff=-18000 US/Eastern Sun Mar 11 07:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 EDT isdst=1 gmtoff=-14400 US/Eastern Sun Nov 4 05:59:59 2007 UTC = Sun Nov 4 01:59:59 2007 EDT isdst=1 gmtoff=-14400 US/Eastern Sun Nov 4 06:00:00 2007 UTC = Sun Nov 4 01:00:00 2007 EST isdst=0 gmtoff=-18000 -- Robert
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