🚀 go-pugleaf

>and I swear
>that I spent 1/2 hour sifting through the man pages and nowhere did I find
>as concise a method as Jim posted!

Concise, perhaps, but not the best way - and possibly not even the
*right* way.  That "cp" is going to trash whatever file happens to be
linked to "localtime", e.g. "US/Pacific"; you can un-trash it, as you've
made a copy of its contents, but why not just do:

	zic -l US/Eastern

which is mentioned in ZIC(8), although it doesn't sufficiently
forcefully say "*THIS* is the way you change the default time zone from
the command line"...

...which may be just as well, 'cuz it's done differently in SVR4,
including SunOS 5.0.

In SVR4, you don't normally have a "localtime" link (it's been too long
since I've seen the SVR4 code to know whether the current version even
bothers to look at "localtime", or just defaults to UTC if the TZ
environment variable is set).

Instead, the file "/etc/TIMEZONE" is read by "init" (has been since at
least SVR3.1) and used to initialize the environment; you change the
setting of TZ in that file, and reboot, and that should change the time
zone setting.

(And yes, at least when I last saw the code, the SVR4 code *did* support
the Olson scheme, as well as the yukky traditional SV scheme and its
POSIX descendant, for timezone stuff; they just may not have supplied
the actual time zone files.  "zic" is documented, so the code probably
is there....)