shutdown.8

.Dd July 29, 2014
.Dt SHUTDOWN 8
.Os Linux
.Sh NAME
.Nm shutdown
.Nd bring down the system
.Sh SYNOPSIS
.Nm shutdown
.Op Fl rhP
.Op Fl fF
.Op Cm now | Cm + Ns Ar mins
.Op Ar message ...
.Sh DESCRIPTION
.Nm
brings the system down in a secure way.
All logged-in users
are notified that the system is going down, and
.Xr login 1
is blocked.
.Pp
By default,
.Nm
puts the system into single user mode.
Rebooting and halting the system can be done using the following options:
.Bl -tag -width indent
.It Fl c
Cancel an ongoing shutdown.
.It Fl f
Enable fast booting; skip
.Xr fsck 8
on next boot.
.It Fl F
Force run of
.Xr fsck 8
on next boot.
.It Fl h
Halt the system.
.It Fl k
Don't really shutdown; only send the warning messages to everybody.
.It Fl P
Poweroff the system.
.It Fl r
Reboot the system.
.It Cm now
Shutdown without further waiting.
.It Cm + Ns Ar mins
Wait
.Ar mins
minutes before shutting down.
.It Ar message
Message displayed to all users, defaults to "system is going down".
.El
.Sh UNSUPPORTED OPTIONS
This version of
.Nm
is based on
.Xr runit 8 ,
the following features are
.Sy not
supported:
.Bl -tag -width indent
.It Fl t Ar secs
to wait
.Ar secs
seconds between SIGKILL and SIGTERM on shutdown is silently ignored.
.It Fl a
Use
.Pa /etc/shutdown.allow .
.It Fl H
Drop into boot monitor.
.It Fl n
Don't call
.Xr init 8 .
.It Ar hh Ns : Ns Ar mm
Absolute time specification is not implemented.
.El
.Sh EXAMPLES
Turn off the system:
.Dl # shutdown -h now
.Sh SEE ALSO
.Xr fsck 8 ,
.Xr halt 8 ,
.Xr init 8 ,
.Xr poweroff 8 ,
.Xr reboot 8 ,
.Xr runit 8 ,
.Xr runsvchdir 8
.Sh AUTHOR
.An Leah Neukirchen ,
.Mt leah@vuxu.org .