In SVR4 unixes and others the zoneinfo library functions read the config
files each time  - solaris at some stage started  caching config the
first time you call the functions, which is why you have to reboot to be
sure....

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT listserv.temple DOT edu] On
Behalf Of David Magda
Sent: Friday, 15 December 2006 1:25 PM
To: NETWORKER AT listserv.temple DOT edu
Subject: Re: [Networker] 2007 USA Daylight Savings Change

On Dec 14, 2006, at 18:46, Tim Mooney wrote:

>> On solaris you still need to reboot so that all processes pick up the

>> zoneinfo...
>
> Absolutely.  Linux and other platforms too, I would guess.

No, I don't believe so.

Solaris has two patches: one is for "POSIX" timezones (TZ=EST5EDT), and
the other is for "geographic" ones (TZ=America/Boston). The reboot is
needed because some kernel files are changed: not sure exactly why
they're changed.

For Linux (and the BSDs I believe), once the files in /usr/share/
zoneinfo are updated (and /etc/localtime if it's not a link), then
things should be good.

Though it's best to do your own testing and not take my word for it. :)

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