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+'\" t
+.TH "SHUTDOWN" "8" "" "systemd 254" "shutdown"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "NAME"
+shutdown \- Halt, power off or reboot the machine
+.SH "SYNOPSIS"
+.HP \w'\fBshutdown\fR\ 'u
+\fBshutdown\fR [OPTIONS...] [TIME] [WALL...]
+.SH "DESCRIPTION"
+.PP
+\fBshutdown\fR
+may be used to halt, power off, or reboot the machine\&.
+.PP
+The first argument may be a time string (which is usually
+"now")\&. Optionally, this may be followed by a wall message to be sent to all logged\-in users before going down\&.
+.PP
+The time string may either be in the format
+"hh:mm"
+for hour/minutes specifying the time to execute the shutdown at, specified in 24h clock format\&. Alternatively it may be in the syntax
+"+m"
+referring to the specified number of minutes m from now\&.
+"now"
+is an alias for
+"+0", i\&.e\&. for triggering an immediate shutdown\&. If no time argument is specified,
+"+1"
+is implied\&.
+.PP
+Note that to specify a wall message you must specify a time argument, too\&.
+.PP
+If the time argument is used, 5 minutes before the system goes down the
+/run/nologin
+file is created to ensure that further logins shall not be allowed\&.
+.SH "OPTIONS"
+.PP
+The following options are understood:
+.PP
+\fB\-\-help\fR
+.RS 4
+Print a short help text and exit\&.
+.RE
+.PP
+\fB\-H\fR, \fB\-\-halt\fR
+.RS 4
+Halt the machine\&.
+.RE
+.PP
+\fB\-P\fR, \fB\-\-poweroff\fR
+.RS 4
+Power the machine off (the default)\&.
+.RE
+.PP
+\fB\-r\fR, \fB\-\-reboot\fR
+.RS 4
+Reboot the machine\&.
+.RE
+.PP
+\fB\-h\fR
+.RS 4
+The same as
+\fB\-\-poweroff\fR, but does not override the action to take if it is "halt"\&. E\&.g\&.
+\fBshutdown \-\-reboot \-h\fR
+means "poweroff", but
+\fBshutdown \-\-halt \-h\fR
+means "halt"\&.
+.RE
+.PP
+\fB\-k\fR
+.RS 4
+Do not halt, power off, or reboot, but just write the wall message\&.
+.RE
+.PP
+\fB\-\-no\-wall\fR
+.RS 4
+Do not send wall message before halt, power off, or reboot\&.
+.RE
+.PP
+\fB\-c\fR
+.RS 4
+Cancel a pending shutdown\&. This may be used to cancel the effect of an invocation of
+\fBshutdown\fR
+with a time argument that is not
+"+0"
+or
+"now"\&.
+.RE
+.PP
+\fB\-\-show\fR
+.RS 4
+Show a pending shutdown action and time if there is any\&.
+.RE
+.SH "EXIT STATUS"
+.PP
+On success, 0 is returned, a non\-zero failure code otherwise\&.
+.SH "COMPATIBILITY"
+.PP
+The
+\fB shutdown\fR
+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
+\fBsystemctl rescue\fR
+instead\&.
+.SH "SEE ALSO"
+.PP
+\fBsystemd\fR(1),
+\fBsystemctl\fR(1),
+\fBhalt\fR(8),
+\fBwall\fR(1)