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5430f7f2bc
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.
189 lines
7.5 KiB
XML
189 lines
7.5 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="shutdown">
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<refentryinfo>
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<title>shutdown</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>shutdown</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>shutdown</refname>
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<refpurpose>Halt, power-off or reboot the machine</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>shutdown <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="opt">TIME</arg> <arg choice="opt" rep="repeat">WALL</arg></command>
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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>shutdown</command> may be used to halt,
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power-off or reboot the machine.</para>
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<para>The first argument may be a time string (which
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is usually <literal>now</literal>). Optionally, this
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may be followed by a wall message to be sent to all
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logged-in users before going down.</para>
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<para>The time string may either be in the format
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<literal>hh:mm</literal> for hour/minutes specifying
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the time to execute the shutdown at, specified in 24h
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clock format. Alternatively it may be in the syntax
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<literal>+m</literal> referring to the specified
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number of minutes m from now. <literal>now</literal>
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is an alias for <literal>+0</literal>, i.e. for
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triggering an immediate shutdown. If no time argument
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is specified, <literal>+1</literal> is
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implied.</para>
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<para>Note that to specify a wall message you must
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specify a time argument, too.</para>
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<para>If the time argument is used, 5 minutes
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before the system goes down the
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<filename>/etc/nologin</filename> file is created to
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ensure that further logins shall not be
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allowed.</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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<listitem><para>Prints a short help
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text and exits.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-H</option></term>
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<term><option>--halt</option></term>
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<listitem><para>Halt the machine.</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
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machine (the default).</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-r</option></term>
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<term><option>--reboot</option></term>
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<listitem><para>Reboot the
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machine.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-h</option></term>
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<listitem><para>Equivalent to
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<option>--poweroff</option>, unless
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<option>--halt</option> is
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specified.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-k</option></term>
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<listitem><para>Don't halt, power-off,
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reboot, just write wall
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message.</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>Don't send wall
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message before
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halt, power-off, reboot.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-c</option></term>
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<listitem><para>Cancel a pending
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shutdown. This may be used cancel the
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effect of an invocation of
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<command>shutdown</command> with a
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time argument that is not
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<literal>+0</literal> or
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<literal>now</literal>.</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
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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>This is a legacy command available for
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compatibility only.</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>halt</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><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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