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build-sys: update intructions for Makefile-man.am regeneration
[elogind.git] / man / localtime.xml
1 <?xml version='1.0'?> <!--*-nxml-*-->
2 <?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
3 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
4         "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
5
6 <!--
7   This file is part of systemd.
8
9   Copyright 2010 Lennart Poettering
10   Copyright 2012 Shawn Landden
11
12   systemd is free software; you can redistribute it and/or modify it
13   under the terms of the GNU Lesser General Public License as published by
14   the Free Software Foundation; either version 2.1 of the License, or
15   (at your option) any later version.
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18   WITHOUT ANY WARRANTY; without even the implied warranty of
19   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20   Lesser General Public License for more details.
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22   You should have received a copy of the GNU Lesser General Public License
23   along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 -->
25
26 <refentry id="localtime">
27         <refentryinfo>
28                 <title>localtime</title>
29                 <productname>systemd</productname>
30
31                 <authorgroup>
32                         <author>
33                                 <contrib>Developer</contrib>
34                                 <firstname>Lennart</firstname>
35                                 <surname>Poettering</surname>
36                                 <email>lennart@poettering.net</email>
37                         </author>
38                         <author>
39                                 <contrib>Developer</contrib>
40                                 <firstname>Shawn</firstname>
41                                 <surname>Landden</surname>
42                                 <email>shawnlandden@gmail.com</email>
43                         </author>
44                 </authorgroup>
45         </refentryinfo>
46
47         <refmeta>
48                 <refentrytitle>localtime</refentrytitle>
49                 <manvolnum>5</manvolnum>
50         </refmeta>
51
52         <refnamediv>
53                 <refname>localtime</refname>
54                 <refpurpose>Local timezone configuration file</refpurpose>
55         </refnamediv>
56
57         <refsynopsisdiv>
58                 <para><filename>/etc/localtime</filename> -&gt; <filename>../usr/share/zoneinfo/…</filename></para>
59         </refsynopsisdiv>
60
61         <refsect1>
62                 <title>Description</title>
63
64                 <para>The <filename>/etc/localtime</filename> file
65                 configures the system-wide timezone of the local
66                 system that is used by applications for presentation
67                 to the user. It should be an absolute or relative
68                 symbolic link pointing to
69                 <filename>/usr/share/zoneinfo/</filename>, followed by
70                 a timezone identifier such as
71                 <literal>Europe/Berlin</literal> or
72                 <literal>Etc/UTC</literal>.  The resulting link should
73                 lead to the corresponding binary
74                 <citerefentry><refentrytitle>tzfile</refentrytitle><manvolnum>5</manvolnum></citerefentry>
75                 timezone data for the configured timezone.</para>
76
77                 <para>Because the timezone identifier is extracted from
78                 the symlink target name of
79                 <filename>/etc/localtime</filename>, this file may not
80                 be a normal file or hardlink.</para>
81
82                 <para>The timezone may be overridden for individual
83                 programs by using the TZ environment variable. See
84                 <citerefentry><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
85
86                 <para>You may use
87                 <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
88                 to change the settings of this file from the command
89                 line.</para>
90         </refsect1>
91
92         <refsect1>
93                   <title>See Also</title>
94                   <para>
95                           <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
96                           <citerefentry><refentrytitle>tzset</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
97                           <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
98                           <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
99                           <citerefentry><refentrytitle>systemd-timedated.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
100                   </para>
101         </refsect1>
102
103 </refentry>