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269d17f955
Systemd documents "halt" as the primary shutdown mechanism, redirecting "reboot" and "shutdown" to the halt(8), but halt is a really strange and obsolete concept. Who would want to really keep their machine running after shutdown? I expect that halting is almost unused. Let's at least make it less prominent in the docs. While at it, use "power off" for a verb and "power-off" for noun (but "poweroff" of the actual command name).
159 lines
5.3 KiB
XML
159 lines
5.3 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="poweroff"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>poweroff</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>poweroff</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>poweroff</refname>
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<refname>reboot</refname>
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<refname>halt</refname>
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<refpurpose>Power off, reboot, or halt the machine</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>poweroff</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>reboot</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>halt</command>
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<arg choice="opt" rep="repeat">OPTIONS</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>poweroff</command>, <command>reboot</command>, and <command>halt</command> may be used to
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power off, reboot, or halt the machine. All three commands take the same options.</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>--help</option></term>
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<xi:include href="standard-options.xml" xpointer="help-text" />
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</varlistentry>
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<varlistentry>
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<term><option>--halt</option></term>
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<listitem><para>Halt the machine, regardless of which one of
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the three commands is invoked.</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>--poweroff</option></term>
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<listitem><para>Power off the machine, when either <command>halt</command>
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or <command>poweroff</command> is invoked. This option is ignored when
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<command>reboot</command> is invoked.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--reboot</option></term>
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<listitem><para>Reboot the machine, regardless of which one of
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the three commands is invoked.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-f</option></term>
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<term><option>--force</option></term>
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<listitem>
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<para>Force immediate power-off, halt, or reboot. If specified, the command does not contact the
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init system. In most cases, filesystems are not properly unmounted before shutdown. For example,
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the command <command>reboot -f</command> is mostly equivalent to
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<command>systemctl reboot -ff</command>, instead of <command>systemctl reboot -f</command>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-w</option></term>
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<term><option>--wtmp-only</option></term>
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<listitem><para>Only write wtmp shutdown entry, do not actually power off, reboot, or halt.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-d</option></term>
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<term><option>--no-wtmp</option></term>
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<listitem><para>Do not write wtmp shutdown entry.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-n</option></term>
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<term><option>--no-sync</option></term>
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<listitem><para>Don't sync hard disks/storage media before power-off, reboot, or halt.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--no-wall</option></term>
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<listitem><para>Do not send wall message before power-off, reboot, or halt.</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 code otherwise.</para>
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</refsect1>
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<refsect1>
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<title>Notes</title>
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<para>These commands are implemented in a way that preserves basic compatibility with the original SysV
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commands. <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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verbs <command>poweroff</command>, <command>reboot</command>, <command>halt</command> provide the same
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functionality with some additional features.</para>
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<para>Note that on many SysV systems <command>halt</command> used to be synonymous to
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<command>poweroff</command>, i.e. both commands would equally result in powering the machine off. systemd
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is more accurate here, and <command>halt</command> results in halting the machine only (leaving power
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on), and <command>poweroff</command> is required to actually power it off.</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>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>shutdown</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>wall</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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