systemd/man/shutdown.xml
Lennart Poettering 5430f7f2bc relicense to LGPLv2.1 (with exceptions)
We finally got the OK from all contributors with non-trivial commits to
relicense systemd from GPL2+ to LGPL2.1+.

Some udev bits continue to be GPL2+ for now, but we are looking into
relicensing them too, to allow free copy/paste of all code within
systemd.

The bits that used to be MIT continue to be MIT.

The big benefit of the relicensing is that closed source code may now
link against libsystemd-login.so and friends.
2012-04-12 00:24:39 +02:00

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<?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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<refentry id="shutdown">
<refentryinfo>
<title>shutdown</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>shutdown</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>shutdown</refname>
<refpurpose>Halt, power-off or reboot the machine</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>shutdown <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="opt">TIME</arg> <arg choice="opt" rep="repeat">WALL</arg></command>
</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>/etc/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>
<listitem><para>Prints a short help
text and exits.</para></listitem>
</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-off the
machine (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>Equivalent to
<option>--poweroff</option>, unless
<option>--halt</option> is
specified.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-k</option></term>
<listitem><para>Don't halt, power-off,
reboot, just write wall
message.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--no-wall</option></term>
<listitem><para>Don't send wall
message before
halt, power-off, reboot.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-c</option></term>
<listitem><para>Cancel a pending
shutdown. This may be used 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>
</variablelist>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>On success 0 is returned, a non-zero failure
code otherwise.</para>
</refsect1>
<refsect1>
<title>Notes</title>
<para>This is a legacy command available for
compatibility only.</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><refentrytitle>wall</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>