Fixing DST manually on rel4 & rel5

Lowell Gilbert freebsd-questions-local at
Wed Mar 14 15:45:39 UTC 2007

Ken Cochran <kwc at> writes:

> Hello -questions:
> This is most certanly a FAQ but I'm not yet finding the kind of
> answer I need...
> I have a couple of old FreeBSD systems that I can't (yet) update
> to the new Daylight Saving Time rules (based on the email message
> that came out on -announce in late February).  One is
> 4.10-stable, last updated late November 2004 & the other is
> 5.4-release.  Cvsup brings /usr/src in order but I can't update
> ports (yet) to get misc/zoneinfo and it doesn't look like I can
> just "transfer" the /usr/share/zoneinfo bits over from /usr/src
> without a {build,install}world (also impractical at this time).
> Best I can tell from the message that came from -announce sometime
> back, the same fix(es) would apply to both the 4 & 5 branches.
> Is there a "proper" way to fix the timezone on these machines
> "manually" pending the "real" change that will happen in the
> system according to the previous rules/schedule?  (e.g. Fix it
> temporarily/manually but not clobber the original rules.)
> Or is there some way to install the new cvsup'ed zoneinfo bits
> into an "old" system so I can run tzsetup and have everything
> fixed "correctly?"  I'm in US Central timezone and I've seen it
> reported as CST6CDT (I guess that's in SysV).
> FAQ/doc/book pointers/references are welcome of course - I'm
> still digging around in both the Handbook & Complete FreeBSD
> and wherever else I can find...

Copying the zoneinfo files (and running tzsetup) should work fine.

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