| <?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-or-later --> |
| |
| <refentry id="shutdown" |
| xmlns:xi="http://www.w3.org/2001/XInclude"> |
| |
| <refentryinfo> |
| <title>shutdown</title> |
| <productname>systemd</productname> |
| </refentryinfo> |
| |
| <refmeta> |
| <refentrytitle>shutdown</refentrytitle> |
| <manvolnum>8</manvolnum> |
| </refmeta> |
| |
| <refnamediv> |
| <refname>shutdown</refname> |
| <refpurpose>Halt, power off or reboot the machine</refpurpose> |
| </refnamediv> |
| |
| <refsynopsisdiv> |
| <cmdsynopsis> |
| <command>shutdown</command> |
| <arg choice="opt" rep="repeat">OPTIONS</arg> |
| <arg choice="opt">TIME</arg> |
| <arg choice="opt" rep="repeat">WALL</arg> |
| </cmdsynopsis> |
| </refsynopsisdiv> |
| |
| <refsect1> |
| <title>Description</title> |
| |
| <para><command>shutdown</command> may be used to halt, power off, or reboot the machine.</para> |
| |
| <para>The first argument may be a time string (which is usually |
| <literal>now</literal>). Optionally, this may be followed by a |
| wall message to be sent to all logged-in users before going |
| down.</para> |
| |
| <para>The time string may either be in the format |
| <literal>hh:mm</literal> for hour/minutes specifying the time to |
| execute the shutdown at, specified in 24h clock format. |
| Alternatively it may be in the syntax <literal>+m</literal> |
| referring to the specified number of minutes m from now. |
| <literal>now</literal> is an alias for <literal>+0</literal>, i.e. |
| for triggering an immediate shutdown. If no time argument is |
| specified, <literal>+1</literal> is implied.</para> |
| |
| <para>Note that to specify a wall message you must specify a time |
| argument, too.</para> |
| |
| <para>If the time argument is used, 5 minutes before the system |
| goes down the <filename>/run/nologin</filename> file is created to |
| ensure that further logins shall not be allowed.</para> |
| </refsect1> |
| |
| <refsect1> |
| <title>Options</title> |
| |
| <para>The following options are understood:</para> |
| |
| <variablelist> |
| <varlistentry> |
| <term><option>--help</option></term> |
| |
| <xi:include href="standard-options.xml" xpointer="help-text" /> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>-H</option></term> |
| <term><option>--halt</option></term> |
| |
| <listitem><para>Halt the machine.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>-P</option></term> |
| <term><option>--poweroff</option></term> |
| |
| <listitem><para>Power the machine off (the default).</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>-r</option></term> |
| <term><option>--reboot</option></term> |
| |
| <listitem><para>Reboot the machine.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>-h</option></term> |
| |
| <listitem><para>The same as <option>--poweroff</option>, but does not override the action to take if |
| it is "halt". E.g. <command>shutdown --reboot -h</command> means "poweroff", but <command>shutdown |
| --halt -h</command> means "halt".</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>-k</option></term> |
| |
| <listitem><para>Do not halt, power off, or reboot, but just write the wall message.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>--no-wall</option></term> |
| |
| <listitem><para>Do not send wall message before halt, power off, or reboot.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>-c</option></term> |
| |
| <listitem><para>Cancel a pending shutdown. This may be used to cancel the effect of an invocation of |
| <command>shutdown</command> with a time argument that is not <literal>+0</literal> or |
| <literal>now</literal>.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>--show</option></term> |
| |
| <listitem><para>Show a pending shutdown action and time if |
| there is any.</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>Compatibility</title> |
| |
| <para>The <command> shutdown</command> command in previous init systems (including sysvinit) defaulted to |
| single-user mode instead of powering off the machine. To change into single-user mode, use |
| <command>systemctl rescue</command> instead.</para> |
| </refsect1> |
| |
| <refsect1> |
| <title>See Also</title> |
| <para> |
| <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, |
| <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, |
| <citerefentry><refentrytitle>halt</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
| <citerefentry project='man-pages'><refentrytitle>wall</refentrytitle><manvolnum>1</manvolnum></citerefentry> |
| </para> |
| </refsect1> |
| |
| </refentry> |