| DateTime::TimeZone::Local::Unix(3pm) - phpMan
DateTime::TimeZone::Local::UnixUser)Contributed Perl DocumentDateTime::TimeZone::Local::Unix(3pm)
NAME
DateTime::TimeZone::Local::Unix - Determine the local system's time zone on Unix
VERSION
version 1.75
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 <autarch AT urth.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2014 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.
perl v5.20.2 2014-09-30 DateTime::TimeZone::Local::Unix(3pm)
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