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