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">
6 This file is part of systemd.
8 Copyright 2012 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 <refentry id=
"hostnamectl" conditional='ENABLE_HOSTNAMED'
25 xmlns:
xi=
"http://www.w3.org/2001/XInclude">
28 <title>hostnamectl
</title>
29 <productname>systemd
</productname>
33 <contrib>Developer
</contrib>
34 <firstname>Lennart
</firstname>
35 <surname>Poettering
</surname>
36 <email>lennart@poettering.net
</email>
42 <refentrytitle>hostnamectl
</refentrytitle>
43 <manvolnum>1</manvolnum>
47 <refname>hostnamectl
</refname>
48 <refpurpose>Control the system hostname
</refpurpose>
53 <command>hostnamectl
</command>
54 <arg choice=
"opt" rep=
"repeat">OPTIONS
</arg>
55 <arg choice=
"req">COMMAND
</arg>
60 <title>Description
</title>
62 <para><command>hostnamectl
</command> may be used to query and
63 change the system hostname and related settings.
</para>
65 <para>This tool distinguishes three different hostnames: the
66 high-level
"pretty" hostname which might include all kinds of
67 special characters (e.g.
"Lennart's Laptop"), the static hostname
68 which is used to initialize the kernel hostname at boot (e.g.
69 "lennarts-laptop"), and the transient hostname which is a fallback
70 value received from network configuration. If a static hostname is
71 set, and is valid (something other than localhost), then the
72 transient hostname is not used.
</para>
74 <para>Note that the pretty hostname has little restrictions on the characters and length used, while the static and
75 transient hostnames are limited to the usually accepted characters of Internet domain names, and
64 characters at
76 maximum (the latter being a Linux limitation).
</para>
78 <para>The static hostname is stored in
79 <filename>/etc/hostname
</filename>, see
80 <citerefentry><refentrytitle>hostname
</refentrytitle><manvolnum>5</manvolnum></citerefentry>
81 for more information. The pretty hostname, chassis type, and icon
82 name are stored in
<filename>/etc/machine-info
</filename>, see
83 <citerefentry><refentrytitle>machine-info
</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
</para>
86 <citerefentry><refentrytitle>systemd-firstboot
</refentrytitle><manvolnum>1</manvolnum></citerefentry>
87 to initialize the system host name for mounted (but not booted)
92 <title>Options
</title>
94 <para>The following options are understood:
</para>
98 <term><option>--no-ask-password
</option></term>
100 <listitem><para>Do not query the user for authentication for
101 privileged operations.
</para></listitem>
105 <term><option>--static
</option></term>
106 <term><option>--transient
</option></term>
107 <term><option>--pretty
</option></term>
109 <listitem><para>If
<command>status
</command> is invoked (or no explicit command is given) and one of these
110 switches is specified,
<command>hostnamectl
</command> will print out just this selected hostname.
</para>
112 <para>If used with
<command>set-hostname
</command>, only the selected hostname(s) will be updated. When more
113 than one of these switches are specified, all the specified hostnames will be updated.
</para></listitem>
116 <xi:include href=
"user-system-options.xml" xpointer=
"host" />
117 <xi:include href=
"user-system-options.xml" xpointer=
"machine" />
119 <xi:include href=
"standard-options.xml" xpointer=
"help" />
120 <xi:include href=
"standard-options.xml" xpointer=
"version" />
123 <para>The following commands are understood:
</para>
127 <term><command>status
</command></term>
129 <listitem><para>Show current system
131 information.
</para></listitem>
135 <term><command>set-hostname
<replaceable>NAME
</replaceable></command></term>
137 <listitem><para>Set the system hostname to
<replaceable>NAME
</replaceable>. By default, this will alter the
138 pretty, the static, and the transient hostname alike; however, if one or more of
<option>--static
</option>,
139 <option>--transient
</option>,
<option>--pretty
</option> are used, only the selected hostnames are changed. If
140 the pretty hostname is being set, and static or transient are being set as well, the specified hostname will be
141 simplified in regards to the character set used before the latter are updated. This is done by removing special
142 characters and spaces. This ensures that the pretty and the static hostname are always closely related while
143 still following the validity rules of the specific name. This simplification of the hostname string is not done
144 if only the transient and/or static host names are set, and the pretty host name is left untouched.
</para>
146 <para>Pass the empty string
<literal></literal> as the
147 hostname to reset the selected hostnames to their default
148 (usually
<literal>localhost
</literal>).
</para></listitem>
152 <term><command>set-icon-name
<replaceable>NAME
</replaceable></command></term>
154 <listitem><para>Set the system icon name to
155 <replaceable>NAME
</replaceable>. The icon name is used by some
156 graphical applications to visualize this host. The icon name
157 should follow the
<ulink
158 url=
"http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html">Icon
159 Naming Specification
</ulink>.
</para>
161 <para>Pass an empty string to reset the icon name to the
162 default value, which is determined from chassis type (see
163 below) and possibly other parameters.
</para></listitem>
167 <term><command>set-chassis
<replaceable>TYPE
</replaceable></command></term>
169 <listitem><para>Set the chassis type to
170 <replaceable>TYPE
</replaceable>. The chassis type is used by
171 some graphical applications to visualize the host or alter
172 user interaction. Currently, the following chassis types are
174 <literal>desktop
</literal>,
175 <literal>laptop
</literal>,
176 <literal>convertible
</literal>,
177 <literal>server
</literal>,
178 <literal>tablet
</literal>,
179 <literal>handset
</literal>,
180 <literal>watch
</literal>,
181 <literal>embedded
</literal>,
182 as well as the special chassis types
183 <literal>vm
</literal> and
184 <literal>container
</literal> for virtualized systems that lack
185 an immediate physical chassis.
</para>
187 <para>Pass an empty string to reset the chassis type to the
188 default value which is determined from the firmware and
189 possibly other parameters.
</para>
194 <term><command>set-deployment
<replaceable>ENVIRONMENT
</replaceable></command></term>
196 <listitem><para>Set the deployment environment description.
197 <replaceable>ENVIRONMENT
</replaceable> must be a single word
198 without any control characters. One of the following is
200 <literal>development
</literal>,
201 <literal>integration
</literal>,
202 <literal>staging
</literal>,
203 <literal>production
</literal>.
206 <para>Pass an empty string to reset to the default empty
212 <term><command>set-location
<replaceable>LOCATION
</replaceable></command></term>
214 <listitem><para>Set the location string for the system, if it
215 is known.
<replaceable>LOCATION
</replaceable> should be a
216 human-friendly, free-form string describing the physical
217 location of the system, if it is known and applicable. This
218 may be as generic as
<literal>Berlin, Germany
</literal> or as
219 specific as
<literal>Left Rack,
2nd Shelf
</literal>.
</para>
221 <para>Pass an empty string to reset to the default empty
229 <title>Exit status
</title>
231 <para>On success,
0 is returned, a non-zero failure code
236 <title>See Also
</title>
238 <citerefentry><refentrytitle>systemd
</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
239 <citerefentry><refentrytitle>hostname
</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
240 <citerefentry><refentrytitle>hostname
</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
241 <citerefentry><refentrytitle>machine-info
</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
242 <citerefentry><refentrytitle>systemctl
</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
243 <citerefentry><refentrytitle>systemd-hostnamed.service
</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
244 <citerefentry><refentrytitle>systemd-firstboot
</refentrytitle><manvolnum>1</manvolnum></citerefentry>