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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">
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9 Copyright 2010 Lennart Poettering
10 Copyright 2012 Shawn Landden
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12 systemd is free software; you can redistribute it and/or modify it
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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> -> <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>As 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>