Интерактивная система просмотра системных руководств (man-ов)
tzsetup (8)
>> tzsetup (8) ( FreeBSD man: Команды системного администрирования )
BSD mandoc
NAME
tzsetup
- set local timezone
SYNOPSIS
[-n
]
[default
]
DESCRIPTION
The
utility reads a database of timezone information and presents a menu
allowing the user to select a specific zone without knowing the details
of the database layout.
The selected zone is installed as the system
default zone.
The
utility also determines whether any adjustment is necessary for systems where
the hardware clock does not keep
UTC
The following option is available:
-n
Do not create or copy files.
It is possible to short-circuit the menu system by specifying a
default
on the command line; this is intended mainly for pre-configured
installation scripts.
TIMEZONE DATABASE
The contents of the timezone database are indexed by
/usr/share/zoneinfo/zone.tab
This file lists, for each timezone data file, the
ISO
3166 territory code, approximate geographical coordinates
(in
ISO
6709 format),
and location within the territory.
The maintainers of the database maintain the following policies:
At least one zone for every country or inhabited geographical territory.
One zone for every distinct, documented timezone history since the
beginning of the
UNIX
epoch (January 1, 1970,
GMT )
Each zone is named for the most populous city therein.
(Where possible,
the database includes pre-1970 history for its city.)
The source code to the database
(/usr/src/share/zoneinfo/[a-z]*
)
contains many additional comments and documentation references for the
historically minded.
The representation of certain localities as being associated with certain
countries and/or territories is for the purposes of identification only,
and does not imply any endorsement or rejection on the part of the
Fx Project of the territorial claims of any entity.
BUGS
Programs which are already running when
creates or updates
/etc/localtime
will not reflect the updated timezone.
When the system is first configured for a
non- UTC
hardware clock, it is necessary to run
adjkerntz(8)
(which normally happens as a part of system startup) in order to update
the kernel's idea of the correct timezone offset.
