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+<?xml version='1.0'?> <!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+ This file is part of systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+-->
+
+<refentry id="hostnamectl">
+
+ <refentryinfo>
+ <title>hostnamectl</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Lennart</firstname>
+ <surname>Poettering</surname>
+ <email>lennart@poettering.net</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>hostnamectl</refentrytitle>
+ <manvolnum>1</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>hostnamectl</refname>
+ <refpurpose>Control the system hostname</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <cmdsynopsis>
+ <command>hostnamectl <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="req">COMMAND</arg></command>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><command>hostnamectl</command> may be used to
+ query and change the system hostname and related
+ settings.</para>
+
+ <para>This tool distinguishes three different host
+ names: the high-level "pretty" hostname which might
+ include all kinds of special characters
+ (e.g. "Lennart's Laptop"), the static hostname which
+ is used to initialize the kernel hostname at boot
+ (e.g. "lennarts-laptop"), and the transient hostname
+ which might be assigned temporarily due to network
+ configuration and might revert back to the static
+ hostname if network connectivity is lost and is only
+ temporarily written to the kernel hostname
+ (e.g. "dhcp-47-11").</para>
+
+ <para>Note that the pretty hostname has little
+ restrictions on the characters used, while the static
+ and transient hostnames are limited to the usually
+ accepted characters of internet domain names.</para>
+
+ <para>The static host name is stored in
+ <filename>/etc/hostname</filename>, see
+ <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for more information. The pretty host name and icon
+ name are stored in
+ <filename>/etc/machine-info</filename>, see
+ <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>The following options are understood:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>--help</option></term>
+ <term><option>-h</option></term>
+
+ <listitem><para>Prints a short help
+ text and exits.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--version</option></term>
+
+ <listitem><para>Prints a short version
+ string and exits.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--no-ask-password</option></term>
+
+ <listitem><para>Don't query the user
+ for authentication for privileged
+ operations.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-H</option></term>
+ <term><option>--host</option></term>
+
+ <listitem><para>Execute the operation
+ remotely. Specify a hostname, or
+ username and hostname separated by @,
+ to connect to. This will use SSH to
+ talk to a remote
+ system.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--static</option></term>
+ <term><option>--transient</option></term>
+ <term><option>--pretty</option></term>
+
+ <listitem><para>If
+ <command>set-hostname</command> is
+ invoked and one or more of these
+ options are passed only the selected
+ hostnames is
+ updated.</para></listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>The following commands are understood:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><command>status</command></term>
+
+ <listitem><para>Show current system
+ hostname and related
+ information.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><command>set-hostname [NAME]</command></term>
+
+ <listitem><para>Set the system
+ hostname. By default this will alter
+ the pretty, the static, and the
+ transient hostname alike, however if
+ one or more of
+ <option>--static</option>,
+ <option>--transient</option>,
+ <option>--pretty</option> are used
+ only the selected hostnames are
+ changed. If the pretty hostname is
+ being set, and static or transient are
+ being set as well the specified host
+ name will be simplified in regards to
+ the character set used before the
+ latter are updated. This is done by
+ replacing spaces by "-" and removing
+ special characters. This ensures that
+ the pretty and the static hostname
+ are always closely related while still
+ following the validity rules of the
+ specific name. This simplification of
+ the hostname string is not done if
+ only the transient and/or static host
+ names are set, and the pretty host
+ name is left untouched. Pass the empty
+ string "" as hostname to reset the
+ selected hostnames to their default
+ (usually
+ "localhost").</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><command>set-icon-name [NAME]</command></term>
+
+ <listitem><para>Set the system icon
+ name. The icon name is used by some
+ graphical applications to visualize
+ this host. The icon name should follow
+ the <ulink
+ url="http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html">Icon
+ Naming Specification</ulink>. Pass an
+ empty string to this operation to
+ reset the icon name to the default
+ value which is determined from the
+ system form factor and possibly other
+ parameters.</para></listitem>
+ </varlistentry>
+
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Exit status</title>
+
+ <para>On success 0 is returned, a non-zero failure
+ code otherwise.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>