man/localtime.xml

   1 <?xml version='1.0'?> <!--*-nxml-*-->
   2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
   3   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
   4
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   6   This file is part of systemd.
   7
   8   Copyright 2010 Lennart Poettering
   9   Copyright 2012 Shawn Landden
  10
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  24
  25 <refentry id="localtime">
  26   <refentryinfo>
  27     <title>localtime</title>
  28     <productname>systemd</productname>
  29
  30     <authorgroup>
  31       <author>
  32         <contrib>Developer</contrib>
  33         <firstname>Lennart</firstname>
  34         <surname>Poettering</surname>
  35         <email>lennart@poettering.net</email>
  36       </author>
  37       <author>
  38         <contrib>Developer</contrib>
  39         <firstname>Shawn</firstname>
  40         <surname>Landden</surname>
  41         <email>shawnlandden@gmail.com</email>
  42       </author>
  43     </authorgroup>
  44   </refentryinfo>
  45
  46   <refmeta>
  47     <refentrytitle>localtime</refentrytitle>
  48     <manvolnum>5</manvolnum>
  49   </refmeta>
  50
  51   <refnamediv>
  52     <refname>localtime</refname>
  53     <refpurpose>Local timezone configuration file</refpurpose>
  54   </refnamediv>
  55
  56   <refsynopsisdiv>
  57     <para><filename>/etc/localtime</filename> -&gt; <filename>../usr/share/zoneinfo/…</filename></para>
  58   </refsynopsisdiv>
  59
  60   <refsect1>
  61     <title>Description</title>
  62
  63     <para>The <filename>/etc/localtime</filename> file configures the
  64     system-wide timezone of the local system that is used by
  65     applications for presentation to the user. It should be an
  66     absolute or relative symbolic link pointing to
  67     <filename>/usr/share/zoneinfo/</filename>, followed by a timezone
  68     identifier such as <literal>Europe/Berlin</literal> or
  69     <literal>Etc/UTC</literal>. The resulting link should lead to the
  70     corresponding binary
  71     <citerefentry project='man-pages'><refentrytitle>tzfile</refentrytitle><manvolnum>5</manvolnum></citerefentry>
  72     timezone data for the configured timezone.</para>
  73
  74     <para>Because the timezone identifier is extracted from the
  75     symlink target name of <filename>/etc/localtime</filename>, this
  76     file may not be a normal file or hardlink.</para>
  77
  78     <para>The timezone may be overridden for individual programs by
  79     using the <varname>$TZ</varname> environment variable. See
  80     <citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
  81
  82     <para>You may use
  83     <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  84     to change the settings of this file from the command line during
  85     runtime. Use
  86     <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  87     to initialize the time zone on mounted (but not booted) system
  88     images.</para>
  89   </refsect1>
  90
  91   <refsect1>
  92       <title>See Also</title>
  93       <para>
  94         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  95         <citerefentry project='man-pages'><refentrytitle>tzset</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
  96         <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
  97         <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  98         <citerefentry><refentrytitle>systemd-timedated.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
  99         <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 100       </para>
 101   </refsect1>
 102
 103 </refentry>