Content-type: text/html Man page of DateTime::TimeZone::Local::Unix

DateTime::TimeZone::Local::Unix

Section: User Contributed Perl Documentation (3pm)
Updated: 2009-08-18
Index Return to Main Contents
 

NAME

DateTime::TimeZone::Local::Unix - Determine the local system's time zone on Unix  

SYNOPSIS

  my $tz = DateTime::TimeZone->new( name => 'local' );

  my $tz = DateTime::TimeZone::Local->TimeZone();

 

DESCRIPTION

This module provides methods for determining the local time zone on a Unix platform.  

HOW THE TIME ZONE IS DETERMINED

This class tries the following methods of determining the local time zone:
$ENV{TZ}

It checks $ENV{TZ} for a valid time zone name.

/etc/localtime

If this file is a symlink to an Olson database time zone file (usually in /usr/share/zoneinfo) then it uses the target file's path name to determine the time zone name. For example, if the path is /usr/share/zoneinfo/America/Chicago, the time zone is ``America/Chicago''.

Some systems just copy the relevant file to /etc/localtime instead of making a symlink. In this case, we look in /usr/share/zoneinfo for a file that has the same size and content as /etc/localtime to determine the local time zone.

/etc/timezone

If this file exists, it is read and its contents are used as a time zone name.

/etc/TIMEZONE

If this file exists, it is opened and we look for a line starting like ``TZ = ...''. If this is found, it should indicate a time zone name.

/etc/sysconfig/clock

If this file exists, it is opened and we look for a line starting like ``TIMEZONE = ...'' or ``ZONE = ...''. If this is found, it should indicate a time zone name.

/etc/default/init

If this file exists, it is opened and we look for a line starting like ``TZ=...''. If this is found, it should indicate a time zone name.

 

AUTHOR

Dave Rolsky, <[email protected]>  

COPYRIGHT & LICENSE

Copyright (c) 2003-2008 David Rolsky. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

The full text of the license can be found in the LICENSE file included with this module.


 

Index

NAME
SYNOPSIS
DESCRIPTION
HOW THE TIME ZONE IS DETERMINED
AUTHOR
COPYRIGHT & LICENSE

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Time: 04:14:13 GMT, September 24, 2010