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DateTime::TimeZone::Local::Unix(3pm) User Contributed Perl Documentation DateTime::TimeZone::Local::Unix(3pm)
 

NAME

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

VERSION

version 2.19

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.

SUPPORT

Bugs may be submitted at <https://github.com/houseabsolute/DateTime-TimeZone/issues>.
I am also usually active on IRC as 'autarch' on "irc://irc.perl.org".

SOURCE

The source code repository for DateTime-TimeZone can be found at <https://github.com/houseabsolute/DateTime-TimeZone>.

AUTHOR

Dave Rolsky <autarch@urth.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2018 by Dave Rolsky.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
The full text of the license can be found in the LICENSE file included with this distribution.
2018-05-13 perl v5.26.2