man/hostname.xml

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   8   Copyright 2010 Lennart Poettering
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  23
  24 <refentry id="hostname">
  25   <refentryinfo>
  26     <title>hostname</title>
  27     <productname>systemd</productname>
  28
  29     <authorgroup>
  30       <author>
  31         <contrib>Developer</contrib>
  32         <firstname>Lennart</firstname>
  33         <surname>Poettering</surname>
  34         <email>lennart@poettering.net</email>
  35       </author>
  36     </authorgroup>
  37   </refentryinfo>
  38
  39   <refmeta>
  40     <refentrytitle>hostname</refentrytitle>
  41     <manvolnum>5</manvolnum>
  42   </refmeta>
  43
  44   <refnamediv>
  45     <refname>hostname</refname>
  46     <refpurpose>Local hostname configuration file</refpurpose>
  47   </refnamediv>
  48
  49   <refsynopsisdiv>
  50     <para><filename>/etc/hostname</filename></para>
  51   </refsynopsisdiv>
  52
  53   <refsect1>
  54     <title>Description</title>
  55
  56     <para>The <filename>/etc/hostname</filename> file configures the
  57     name of the local system that is set during boot using the
  58     <citerefentry><refentrytitle>sethostname</refentrytitle><manvolnum>2</manvolnum></citerefentry>
  59     system call. It should contain a single newline-terminated
  60     hostname string. The hostname may be a free-form string up to 64
  61     characters in length; however, it is recommended that it consists
  62     only of 7-bit ASCII lower-case characters and no spaces or dots,
  63     and limits itself to the format allowed for DNS domain name
  64     labels, even though this is not a strict requirement.</para>
  65
  66     <para>Depending on the operating system, other configuration files
  67     might be checked for configuration of the hostname as well,
  68     however only as fallback.</para>
  69
  70     <para>You may use
  71     <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  72     to change the value of this file during runtime from the command
  73     line. Use
  74     <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  75     to initialize it on mounted (but not booted) system images.</para>
  76   </refsect1>
  77
  78   <refsect1>
  79     <title>History</title>
  80
  81     <para>The simple configuration file format of
  82     <filename>/etc/hostname</filename> originates from Debian
  83     GNU/Linux.</para>
  84   </refsect1>
  85
  86   <refsect1>
  87       <title>See Also</title>
  88       <para>
  89         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  90         <citerefentry><refentrytitle>sethostname</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
  91         <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  92         <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
  93         <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
  94         <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
  95         <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  96         <citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
  97         <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  98       </para>
  99   </refsect1>
 100
 101 </refentry>