Commit 5dc50792 authored by Lennart Poettering's avatar Lennart Poettering
Browse files

man: document new shutdown features

parent d8fa9401
......@@ -49,7 +49,7 @@
<refsynopsisdiv>
<cmdsynopsis>
<command>shutdown <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="opt">now</arg> <arg choice="opt" rep="repeat">WALL</arg></command>
<command>shutdown <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="opt">TIME</arg> <arg choice="opt" rep="repeat">WALL</arg></command>
</cmdsynopsis>
</refsynopsisdiv>
......@@ -59,11 +59,30 @@
<para><command>shutdown</command> may be used to halt,
power-off or reboot the machine.</para>
<para>The first argument should be the string
<command>now</command> which however is ignored by
this implementation. Optionally, this may be followed
by a wall message to be sent to all logged-in users
before going down.</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>now</literal> is
implied.</para>
<para>Note that to specify a wall message you must
speciy 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>
......@@ -126,6 +145,39 @@
message before
halt, power-off, reboot.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-f</option></term>
<listitem><para>Skip file system check
on reboot. This is equivalent to
creating the
<filename>/fastboot</filename> file
before going down.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-F</option></term>
<listitem><para>Force file system
check on reboot. This is equivalent to
creating the
<filename>/forcefsck</filename> file
before going down.</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>
......
......@@ -655,6 +655,26 @@
connected to syslog or the
kernel log buffer.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><filename>systemd-shutdownd.service</filename></term>
<listitem>
<para>This is internally used
by
<citerefentry><refentrytitle>shutdown</refentrytitle><manvolnum>8</manvolnum></citerefentry>
to implement delayed shutdowns.</para>
<para>This is a
socket-activated service, see
<filename>system-shutdownd.socket</filename>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><filename>systemd-shutdownd.socket</filename></term>
<listitem>
<para>Socket activation unit
for
<filename>system-shutdownd.service</filename>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><filename>umount.target</filename></term>
......@@ -723,9 +743,9 @@
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.target</refentrytitle><manvolnum>5</manvolnum></citerefentry>
</para>
</refsect1>
......
......@@ -937,6 +937,17 @@
abstract namespace.</para></listitem>
</varlistentry>
<varlistentry>
<term><filename>@/org/freedesktop/systemd1/shutdown</filename></term>
<listitem><para>Used internally by the
<citerefentry><refentrytitle>shutdown</refentrytitle><manvolnum>8</manvolnum></citerefentry>
tool to implement delayed
shutdowns. This is an AF_UNIX datagram
socket in the Linux abstract
namespace.</para></listitem>
</varlistentry>
<varlistentry>
<term><filename>@/org/freedesktop/systemd1/private</filename></term>
......
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