man/hostnamectl.xml - systemd-stable - Rivoreo Source Code Repositories

 <?xml version='1.0'?> <!--*-nxml-*-->
 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
 <!-- SPDX-License-Identifier: LGPL-2.1+ -->

 <refentry id="hostnamectl" conditional='ENABLE_HOSTNAMED'
     xmlns:xi="http://www.w3.org/2001/XInclude">

   <refentryinfo>
     <title>hostnamectl</title>
     <productname>systemd</productname>
   </refentryinfo>

   <refmeta>
     <refentrytitle>hostnamectl</refentrytitle>
     <manvolnum>1</manvolnum>
   </refmeta>

   <refnamediv>
     <refname>hostnamectl</refname>
     <refpurpose>Control the system hostname</refpurpose>
   </refnamediv>

   <refsynopsisdiv>
     <cmdsynopsis>
       <command>hostnamectl</command>
       <arg choice="opt" rep="repeat">OPTIONS</arg>
       <arg choice="req">COMMAND</arg>
     </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 hostnames: 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 is a fallback
     value received from network configuration. If a static hostname is
     set, and is valid (something other than localhost), then the
     transient hostname is not used.</para>

     <para>Note that the pretty hostname has little restrictions on the characters and length used, while the static and
     transient hostnames are limited to the usually accepted characters of Internet domain names, and 64 characters at
     maximum (the latter being a Linux limitation).</para>

     <para>The static hostname is stored in
     <filename>/etc/hostname</filename>, see
     <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>
     for more information. The pretty hostname, chassis type, and icon
     name are stored in <filename>/etc/machine-info</filename>, see
     <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>

     <para>Use
     <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
     to initialize the system host name for mounted (but not booted)
     system images.</para>
   </refsect1>

   <refsect1>
     <title>Options</title>

     <para>The following options are understood:</para>

     <variablelist>
       <varlistentry>
         <term><option>--no-ask-password</option></term>

         <listitem><para>Do not query the user for authentication for
         privileged operations.</para></listitem>
       </varlistentry>

       <varlistentry>
         <term><option>--static</option></term>
         <term><option>--transient</option></term>
         <term><option>--pretty</option></term>

         <listitem><para>If <command>status</command> is invoked (or no explicit command is given) and one of these
         switches is specified, <command>hostnamectl</command> will print out just this selected hostname.</para>

         <para>If used with <command>set-hostname</command>, only the selected hostname(s) will be updated. When more
         than one of these switches are specified, all the specified hostnames will be updated. </para></listitem>
       </varlistentry>

       <xi:include href="user-system-options.xml" xpointer="host" />
       <xi:include href="user-system-options.xml" xpointer="machine" />

       <xi:include href="standard-options.xml" xpointer="help" />
       <xi:include href="standard-options.xml" xpointer="version" />
     </variablelist>
   </refsect1>

   <refsect1>
     <title>Commands</title>

     <para>The following commands are understood:</para>

     <variablelist>
       <varlistentry>
         <term><command>status</command></term>

         <listitem><para>Show current system hostname and related information. If no command is specified,
         this is the implied default.</para></listitem>
       </varlistentry>

       <varlistentry>
         <term><command>set-hostname <replaceable>NAME</replaceable></command></term>

         <listitem><para>Set the system hostname to <replaceable>NAME</replaceable>. 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 hostname will be
         simplified in regards to the character set used before the latter are updated. This is done by removing special
         characters and spaces. 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.</para>

         <para>Pass the empty string <literal></literal> as the
         hostname to reset the selected hostnames to their default
         (usually <literal>localhost</literal>).</para></listitem>
       </varlistentry>

       <varlistentry>
         <term><command>set-icon-name <replaceable>NAME</replaceable></command></term>

         <listitem><para>Set the system icon name to
         <replaceable>NAME</replaceable>. 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>.</para>

         <para>Pass an empty string to reset the icon name to the
         default value, which is determined from chassis type (see
         below) and possibly other parameters.</para></listitem>
       </varlistentry>

       <varlistentry>
         <term><command>set-chassis <replaceable>TYPE</replaceable></command></term>

         <listitem><para>Set the chassis type to
         <replaceable>TYPE</replaceable>. The chassis type is used by
         some graphical applications to visualize the host or alter
         user interaction. Currently, the following chassis types are
         defined:
         <literal>desktop</literal>,
         <literal>laptop</literal>,
         <literal>convertible</literal>,
         <literal>server</literal>,
         <literal>tablet</literal>,
         <literal>handset</literal>,
         <literal>watch</literal>,
         <literal>embedded</literal>,
         as well as the special chassis types
         <literal>vm</literal> and
         <literal>container</literal> for virtualized systems that lack
         an immediate physical chassis.</para>

         <para>Pass an empty string to reset the chassis type to the
         default value which is determined from the firmware and
         possibly other parameters.</para>
         </listitem>
       </varlistentry>

       <varlistentry>
         <term><command>set-deployment <replaceable>ENVIRONMENT</replaceable></command></term>

         <listitem><para>Set the deployment environment description.
         <replaceable>ENVIRONMENT</replaceable> must be a single word
         without any control characters. One of the following is
         suggested:
         <literal>development</literal>,
         <literal>integration</literal>,
         <literal>staging</literal>,
         <literal>production</literal>.
         </para>

         <para>Pass an empty string to reset to the default empty
         value.</para>
         </listitem>
       </varlistentry>

       <varlistentry>
         <term><command>set-location <replaceable>LOCATION</replaceable></command></term>

         <listitem><para>Set the location string for the system, if it
         is known. <replaceable>LOCATION</replaceable> should be a
         human-friendly, free-form string describing the physical
         location of the system, if it is known and applicable. This
         may be as generic as <literal>Berlin, Germany</literal> or as
         specific as <literal>Left Rack, 2nd Shelf</literal>.</para>

         <para>Pass an empty string to reset to the default empty
         value.</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>,
       <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
     </para>
   </refsect1>

 </refentry>
	<?xml version='1.0'?> <!---nxml--->
	<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
	"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
	<!-- SPDX-License-Identifier: LGPL-2.1+ -->

	<refentry id="hostnamectl" conditional='ENABLE_HOSTNAMED'
	xmlns:xi="http://www.w3.org/2001/XInclude">

	<refentryinfo>
	<title>hostnamectl</title>
	<productname>systemd</productname>
	</refentryinfo>

	<refmeta>
	<refentrytitle>hostnamectl</refentrytitle>
	<manvolnum>1</manvolnum>
	</refmeta>

	<refnamediv>
	<refname>hostnamectl</refname>
	<refpurpose>Control the system hostname</refpurpose>
	</refnamediv>

	<refsynopsisdiv>
	<cmdsynopsis>
	<command>hostnamectl</command>
	<arg choice="opt" rep="repeat">OPTIONS</arg>
	<arg choice="req">COMMAND</arg>
	</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 hostnames: 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 is a fallback
	value received from network configuration. If a static hostname is
	set, and is valid (something other than localhost), then the
	transient hostname is not used.</para>

	<para>Note that the pretty hostname has little restrictions on the characters and length used, while the static and
	transient hostnames are limited to the usually accepted characters of Internet domain names, and 64 characters at
	maximum (the latter being a Linux limitation).</para>

	<para>The static hostname is stored in
	<filename>/etc/hostname</filename>, see
	<citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>
	for more information. The pretty hostname, chassis type, and icon
	name are stored in <filename>/etc/machine-info</filename>, see
	<citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>

	<para>Use
	<citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
	to initialize the system host name for mounted (but not booted)
	system images.</para>
	</refsect1>

	<refsect1>
	<title>Options</title>

	<para>The following options are understood:</para>

	<variablelist>
	<varlistentry>
	<term><option>--no-ask-password</option></term>

	<listitem><para>Do not query the user for authentication for
	privileged operations.</para></listitem>
	</varlistentry>

	<varlistentry>
	<term><option>--static</option></term>
	<term><option>--transient</option></term>
	<term><option>--pretty</option></term>

	<listitem><para>If <command>status</command> is invoked (or no explicit command is given) and one of these
	switches is specified, <command>hostnamectl</command> will print out just this selected hostname.</para>

	<para>If used with <command>set-hostname</command>, only the selected hostname(s) will be updated. When more
	than one of these switches are specified, all the specified hostnames will be updated. </para></listitem>
	</varlistentry>

	<xi:include href="user-system-options.xml" xpointer="host" />
	<xi:include href="user-system-options.xml" xpointer="machine" />

	<xi:include href="standard-options.xml" xpointer="help" />
	<xi:include href="standard-options.xml" xpointer="version" />
	</variablelist>
	</refsect1>

	<refsect1>
	<title>Commands</title>

	<para>The following commands are understood:</para>

	<variablelist>
	<varlistentry>
	<term><command>status</command></term>

	<listitem><para>Show current system hostname and related information. If no command is specified,
	this is the implied default.</para></listitem>
	</varlistentry>

	<varlistentry>
	<term><command>set-hostname <replaceable>NAME</replaceable></command></term>

	<listitem><para>Set the system hostname to <replaceable>NAME</replaceable>. 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 hostname will be
	simplified in regards to the character set used before the latter are updated. This is done by removing special
	characters and spaces. 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.</para>

	<para>Pass the empty string <literal></literal> as the
	hostname to reset the selected hostnames to their default
	(usually <literal>localhost</literal>).</para></listitem>
	</varlistentry>

	<varlistentry>
	<term><command>set-icon-name <replaceable>NAME</replaceable></command></term>

	<listitem><para>Set the system icon name to
	<replaceable>NAME</replaceable>. 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>.</para>

	<para>Pass an empty string to reset the icon name to the
	default value, which is determined from chassis type (see
	below) and possibly other parameters.</para></listitem>
	</varlistentry>

	<varlistentry>
	<term><command>set-chassis <replaceable>TYPE</replaceable></command></term>

	<listitem><para>Set the chassis type to
	<replaceable>TYPE</replaceable>. The chassis type is used by
	some graphical applications to visualize the host or alter
	user interaction. Currently, the following chassis types are
	defined:
	<literal>desktop</literal>,
	<literal>laptop</literal>,
	<literal>convertible</literal>,
	<literal>server</literal>,
	<literal>tablet</literal>,
	<literal>handset</literal>,
	<literal>watch</literal>,
	<literal>embedded</literal>,
	as well as the special chassis types
	<literal>vm</literal> and
	<literal>container</literal> for virtualized systems that lack
	an immediate physical chassis.</para>

	<para>Pass an empty string to reset the chassis type to the
	default value which is determined from the firmware and
	possibly other parameters.</para>
	</listitem>
	</varlistentry>

	<varlistentry>
	<term><command>set-deployment <replaceable>ENVIRONMENT</replaceable></command></term>

	<listitem><para>Set the deployment environment description.
	<replaceable>ENVIRONMENT</replaceable> must be a single word
	without any control characters. One of the following is
	suggested:
	<literal>development</literal>,
	<literal>integration</literal>,
	<literal>staging</literal>,
	<literal>production</literal>.
	</para>

	<para>Pass an empty string to reset to the default empty
	value.</para>
	</listitem>
	</varlistentry>

	<varlistentry>
	<term><command>set-location <replaceable>LOCATION</replaceable></command></term>

	<listitem><para>Set the location string for the system, if it
	is known. <replaceable>LOCATION</replaceable> should be a
	human-friendly, free-form string describing the physical
	location of the system, if it is known and applicable. This
	may be as generic as <literal>Berlin, Germany</literal> or as
	specific as <literal>Left Rack, 2nd Shelf</literal>.</para>

	<para>Pass an empty string to reset to the default empty
	value.</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>,
	<citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
	</para>
	</refsect1>

	</refentry>