man/localtime.xml

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   3 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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   7   This file is part of systemd.
   8
   9   Copyright 2010 Lennart Poettering
  10   Copyright 2012 Shawn Landden
  11
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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> -&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 configures the
  65     system-wide timezone of the local system that is used by
  66     applications for presentation to the user. It should be an
  67     absolute or relative symbolic link pointing to
  68     <filename>/usr/share/zoneinfo/</filename>, followed by a timezone
  69     identifier such as <literal>Europe/Berlin</literal> or
  70     <literal>Etc/UTC</literal>. The resulting link should lead to the
  71     corresponding binary
  72     <citerefentry project='man-pages'><refentrytitle>tzfile</refentrytitle><manvolnum>5</manvolnum></citerefentry>
  73     timezone data for the configured timezone.</para>
  74
  75     <para>Because the timezone identifier is extracted from the
  76     symlink target name of <filename>/etc/localtime</filename>, this
  77     file may not be a normal file or hardlink.</para>
  78
  79     <para>The timezone may be overridden for individual programs by
  80     using the <varname>$TZ</varname> environment variable. See
  81     <citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
  82
  83     <para>You may use
  84     <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  85     to change the settings of this file from the command line during
  86     runtime. Use
  87     <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  88     to initialize the time zone on mounted (but not booted) system
  89     images.</para>
  90   </refsect1>
  91
  92   <refsect1>
  93       <title>See Also</title>
  94       <para>
  95         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  96         <citerefentry project='man-pages'><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         <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 101       </para>
 102   </refsect1>
 103
 104 </refentry>