man/localtime.xml

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   8   This file is part of systemd.
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  10   Copyright 2010 Lennart Poettering
  11   Copyright 2012 Shawn Landden
  12
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  26
  27 <refentry id="localtime">
  28   <refentryinfo>
  29     <title>localtime</title>
  30     <productname>systemd</productname>
  31
  32     <authorgroup>
  33       <author>
  34         <contrib>Developer</contrib>
  35         <firstname>Lennart</firstname>
  36         <surname>Poettering</surname>
  37         <email>lennart@poettering.net</email>
  38       </author>
  39       <author>
  40         <contrib>Developer</contrib>
  41         <firstname>Shawn</firstname>
  42         <surname>Landden</surname>
  43         <email>shawnlandden@gmail.com</email>
  44       </author>
  45     </authorgroup>
  46   </refentryinfo>
  47
  48   <refmeta>
  49     <refentrytitle>localtime</refentrytitle>
  50     <manvolnum>5</manvolnum>
  51   </refmeta>
  52
  53   <refnamediv>
  54     <refname>localtime</refname>
  55     <refpurpose>Local timezone configuration file</refpurpose>
  56   </refnamediv>
  57
  58   <refsynopsisdiv>
  59     <para><filename>/etc/localtime</filename> -&gt; <filename>../usr/share/zoneinfo/…</filename></para>
  60   </refsynopsisdiv>
  61
  62   <refsect1>
  63     <title>Description</title>
  64
  65     <para>The <filename>/etc/localtime</filename> file configures the
  66     system-wide timezone of the local system that is used by
  67     applications for presentation to the user. It should be an
  68     absolute or relative symbolic link pointing to
  69     <filename>/usr/share/zoneinfo/</filename>, followed by a timezone
  70     identifier such as <literal>Europe/Berlin</literal> or
  71     <literal>Etc/UTC</literal>. The resulting link should lead to the
  72     corresponding binary
  73     <citerefentry project='man-pages'><refentrytitle>tzfile</refentrytitle><manvolnum>5</manvolnum></citerefentry>
  74     timezone data for the configured timezone.</para>
  75
  76     <para>Because the timezone identifier is extracted from the
  77     symlink target name of <filename>/etc/localtime</filename>, this
  78     file may not be a normal file or hardlink.</para>
  79
  80     <para>The timezone may be overridden for individual programs by
  81     using the <varname>$TZ</varname> environment variable. See
  82     <citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
  83
  84     <para>You may use
  85     <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  86     to change the settings of this file from the command line during
  87     runtime. Use
  88     <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  89     to initialize the time zone on mounted (but not booted) system
  90     images.</para>
  91   </refsect1>
  92
  93   <refsect1>
  94       <title>See Also</title>
  95       <para>
  96         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  97         <citerefentry project='man-pages'><refentrytitle>tzset</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
  98         <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
  99         <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 100         <citerefentry><refentrytitle>systemd-timedated.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 101         <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 102       </para>
 103   </refsect1>
 104
 105 </refentry>