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-.\" Copyright (c) 1996 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" $FreeBSD$
-.Dd July 4, 2009
-.Dt TZSETUP 8
-.Os
-.Sh NAME
-.Nm tzsetup
-.Nd set local timezone
-.Sh SYNOPSIS
-.Nm
-.Op Fl nrs
-.Op Fl C Ar chroot directory
-.Op Ar zoneinfo file | zoneinfo name
-.Sh DESCRIPTION
-The
-.Nm
-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
-.Nm
-utility also determines whether any adjustment is necessary for systems where
-the hardware clock does not keep
-.Tn UTC .
-.Pp
-The following option is available:
-.Bl -tag -offset indent -width Fl
-.It Fl C Ar chroot directory
-Open all files and directories relative to
-.Ar chroot directory .
-.It Fl n
-Do not create or copy files.
-.It Fl r
-Reinstall the zoneinfo file installed last time. The name is obtained from
-.Pa /var/db/zoneinfo .
-.It Fl s
-Skip the initial question about adjusting the clock if not set to
-.Tn UTC .
-.El
-.Pp
-It is possible to short-circuit the menu system by specifying the
-location of a
-.Ar zoneinfo file
-or the name of the
-.Ar zoneinfo name
-on the command line; this is intended mainly for pre-configured installation
-scripts or people who know which zoneinfo they want to install.
-.Sh TIMEZONE DATABASE
-The contents of the timezone database are indexed by
-.Pa /usr/share/zoneinfo/zone.tab .
-This file lists, for each timezone data file, the
-.Tn ISO
-3166 territory code, approximate geographical coordinates
-(in
-.Tn ISO
-6709 format),
-and location within the territory.
-.Pp
-The maintainers of the database maintain the following policies:
-.Bl -enum -offset indent
-.It
-At least one zone for every country or inhabited geographical territory.
-.It
-One zone for every distinct, documented timezone history since the
-beginning of the
-.Ux
-epoch (January 1, 1970,
-.Tn GMT ) .
-.It
-Each zone is named for the most populous city therein.
-(Where possible,
-the database includes pre-1970 history for its city.)
-.El
-The source code to the database
-.Pq Pa /usr/src/share/zoneinfo/[a-z]*
-contains many additional comments and documentation references for the
-historically minded.
-.Sh FILES
-.Bl -tag -width /usr/share/zoneinfo/zone.tab -compact
-.It Pa /etc/localtime
-current time zone file.
-.It Pa /etc/wall_cmos_clock
-see
-.Xr adjkerntz 8 .
-.It Pa /usr/share/misc/iso3166
-mapping of
-.Tn ISO
-3166 territory codes to names.
-.It Pa /usr/share/zoneinfo
-directory for zoneinfo files.
-.It Pa /usr/share/zoneinfo/zone.tab
-mapping of timezone file to country and location.
-.It Pa /var/db/zoneinfo
-saved name of the timezone file installed last.
-.El
-.Sh EXAMPLES
-Normal usage, to select the right zoneinfo file via the dialog-based
-user interface:
-.Dl # tzsetup
-Install the file
-.Pa /usr/share/zoneinfo/Australia/Sydney :
-.Dl # tzsetup /usr/share/zoneinfo/Australia/Sydney
-Install the zoneinfo file for Australia/Sydney, assumed to be located
-in
-.Pa /usr/share/zoneinfo :
-.Dl # tzsetup Australia/Sydney
-After a reinstall of the zoneinfo files, you can reinstall the
-latest installed zoneinfo file: (as specified in
-.Pa /var/db/zoneinfo )
-.Dl # tzsetup -r
-.Sh SEE ALSO
-.Xr date 1 ,
-.Xr adjtime 2 ,
-.Xr ctime 3 ,
-.Xr timezone 3 ,
-.Xr tzfile 5 ,
-.Xr adjkerntz 8 ,
-.Xr zdump 8 ,
-.Xr zic 8
-.Sh DISCLAIMER
-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.
-.Sh BUGS
-Programs which are already running when
-.Nm
-creates or updates
-.Pa /etc/localtime
-will not reflect the updated timezone.
-When the system is first configured for a
-.Pf non- Tn UTC
-hardware clock, it is necessary to run
-.Xr adjkerntz 8
-(which normally happens as a part of system startup) in order to update
-the kernel's idea of the correct timezone offset.
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