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111 lines
2.9 KiB
Groff
111 lines
2.9 KiB
Groff
'\" t
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.TH "SHUTDOWN" "8" "" "systemd 219" "shutdown"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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shutdown \- Halt, power\-off or reboot the machine
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.SH "SYNOPSIS"
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.HP \w'\fBshutdown\fR\ 'u
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\fBshutdown\fR [OPTIONS...] [TIME] [WALL...]
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.SH "DESCRIPTION"
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.PP
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\fBshutdown\fR
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may be used to halt, power\-off or reboot the machine\&.
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.PP
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The first argument may be a time string (which is usually
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"now")\&. Optionally, this may be followed by a wall message to be sent to all logged\-in users before going down\&.
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.PP
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The time string may either be in the format
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"hh:mm"
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for hour/minutes specifying the time to execute the shutdown at, specified in 24h clock format\&. Alternatively it may be in the syntax
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"+m"
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referring to the specified number of minutes m from now\&.
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"now"
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is an alias for
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"+0", i\&.e\&. for triggering an immediate shutdown\&. If no time argument is specified,
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"+1"
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is implied\&.
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.PP
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Note that to specify a wall message you must specify a time argument, too\&.
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.PP
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If the time argument is used, 5 minutes before the system goes down the
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/run/nologin
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file is created to ensure that further logins shall not be allowed\&.
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.SH "OPTIONS"
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.PP
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The following options are understood:
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.PP
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\fB\-\-help\fR
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.RS 4
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Print a short help text and exit\&.
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.RE
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.PP
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\fB\-H\fR, \fB\-\-halt\fR
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.RS 4
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Halt the machine\&.
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.RE
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.PP
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\fB\-P\fR, \fB\-\-poweroff\fR
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.RS 4
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Power\-off the machine (the default)\&.
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.RE
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.PP
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\fB\-r\fR, \fB\-\-reboot\fR
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.RS 4
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Reboot the machine\&.
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.RE
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.PP
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\fB\-h\fR
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.RS 4
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Equivalent to
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\fB\-\-poweroff\fR, unless
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\fB\-\-halt\fR
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is specified\&.
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.RE
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.PP
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\fB\-k\fR
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.RS 4
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Do not halt, power\-off, reboot, just write wall message\&.
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.RE
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.PP
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\fB\-\-no\-wall\fR
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.RS 4
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Do not send wall message before halt, power\-off, reboot\&.
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.RE
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.PP
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\fB\-c\fR
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.RS 4
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Cancel a pending shutdown\&. This may be used cancel the effect of an invocation of
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\fBshutdown\fR
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with a time argument that is not
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"+0"
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or
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"now"\&.
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.RE
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.SH "EXIT STATUS"
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.PP
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On success, 0 is returned, a non\-zero failure code otherwise\&.
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.SH "SEE ALSO"
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.PP
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\fBsystemd\fR(1),
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\fBsystemctl\fR(1),
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\fBhalt\fR(8),
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\fBwall\fR(1)
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