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systemd/man/hostnamectl.xml
Zbigniew Jędrzejewski-Szmek 56ba3c78ae build-sys: create Makefile-man.am automatically
man rules were repeating the same information in too many places,
which was error prone. Those rules can be easily generated from .xml
files. For efficiency and because python is not a required dependency,
Makefile-man.am is only regenerated when requested with

  make update-man-list

If no metadata in man/*.xml changed, this file should not change. So
only when a new man page or a new alias is added, this file should
show up in 'git diff'. The change should then be committed.

If the support for building from git without python was dropped, we
could drop Makefile-man.am from version control. This would also
increase the partial build time (since more stuff would be rebuild
whenever sources in man/*.xml would be modified), so it would probably
wouldn't be worth it.
2013-02-06 23:16:16 -05:00

255 lines
12 KiB
XML

<?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">
<!--
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Copyright 2012 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
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You should have received a copy of the GNU Lesser General Public License
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-->
<refentry id="hostnamectl" conditional='ENABLE_HOSTNAMED'>
<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, chassis
type 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 chassis
type (see below) and possibly other
parameters.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>set-chassis [TYPE]</command></term>
<listitem><para>Set the chassis
type. 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>server</literal>,
<literal>tablet</literal>,
<literal>handset</literal>, as well as
the special chassis types
<literal>vm</literal> and
<literal>container</literal> for
virtualized systems that lack an
immediate physical chassis. Pass an
empty string to this operation to
reset the chassis type to the default
value which is determined from the
firmware 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>