Switch to SpeakEasy.net DSL

The Modular Manual Browser

Home Page
Manual: (Debian-3.1)
Apropos / Subsearch:
optional field

TZCONFIG(8)              Debian Timezone Configuration             TZCONFIG(8)

       tzconfig - set the local timezone


       This  manual  page explains how you can use the tzconfig utility to set
       the local timezone. This is necessary to let your system know about the
       difference  between  system  time  and local time (the time in the real
       world). It is also necessary to make your  system  behave  nicely  when
       your location uses Daylight Savings Time.

       A valid system time together with the correct local time zone will give
       you best performance and highest reliablility. It is especially  impor-
       tant  in  a  network environment, where even small time differences can
       make a mirror refetch a whole ftp site, or where time stamps on  exter-
       nal file systems are used.

       tzconfig  is  called  without  any  parameters from the shell. First it
       presents the current setting and asks for verification to change it.

       You may press Ctrl-C to interrupt the script at any time.

       After you made your choice, tzconfig will try to  change  the  timezone
       for  you.  See  the  Internals section below for technical details. You
       must have root privilegies to actually change anything. Please use tzs-
       elect(1) as a user space command to just look at the timezones. It will
       print the local time in any timezone recognized by the system.

       What timezone is correct for your system? It depends on the  geographi-
       cal  location  of  the machine.  Getting the correct location is impor-
       tant, but the system must also know how your  hardware  clock  is  set.
       Most  DOS  based PCs set their hardware clock on Local Time, while most
       UNIX systems set their hardware clock to UTC.

       The Debian GNU/Linux system gains its knowledge of  this  setting  from
       the file /etc/default/rcS.  This file contains either the line UTC=yes,
       which indicates that the hardware clock is set to UTC, or  it  contains
       the  line  UTC=no,  which  declares  the hardware clock is set to Local
       Time. If these setting are correct, and the hardware  clock  is  truely
       set  as indicated, then configuring the proper timezone for the machine
       will cause the proper date and time to be displayed. If these  are  not
       set  correctly,  the  the  reported  time  will be quite incorrect. See
       hwclock(8) for more details on this topic.

       The work done by tzconfig is actually pretty simple.  It  just  updates
       the  link  /etc/localtime to point to the correct timezone installed in

       There is nothing wrong with doing this manually. However, using  tzcon-
       fig you don't have to remember the path to the timezones.

       /etc/timezone  /etc/localtime  /usr/share/zoneinfo

       hwclock(8) tzselect(1) rcS(5)

       Copyright  1998  Marcus Brinkmann <brinkmdATdebian.org>  Edits Copyright
       1998 Dale Scheetz <dwarfATpolaris.net>

       Please see nroff source for legal notice.

Debian                           12 June 1998                      TZCONFIG(8)