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