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[unix-history] / usr / src / sbin / shutdown / shutdown.8

diff --git a/usr/src/sbin/shutdown/shutdown.8 b/usr/src/sbin/shutdown/shutdown.8
index c68c2bf..8c6ea44 100644 (file)
--- a/usr/src/sbin/shutdown/shutdown.8
+++ b/usr/src/sbin/shutdown/shutdown.8
@@ -2,7 +2,7 @@
 .\" All rights reserved.  The Berkeley software License Agreement
 .\" specifies the terms and conditions for redistribution.
 .\"
 .\" All rights reserved.  The Berkeley software License Agreement
 .\" specifies the terms and conditions for redistribution.
 .\"

-.\"    @(#)shutdown.8  6.2 (Berkeley) %G%
+.\"    @(#)shutdown.8  6.5 (Berkeley) %G%

 .\"
 .TH SHUTDOWN 8 ""
 .UC 4
 .\"
 .TH SHUTDOWN 8 ""
 .UC 4


@@ -11,65 +11,46 @@ shutdown \- close down the system at a given time
 .SH SYNOPSIS
 .B /etc/shutdown
 [
 .SH SYNOPSIS
 .B /etc/shutdown
 [

-.B \-k
-] [
-.B \-r
-] [
-.B \-h
+.B \-fhkrn

 ]
 time [ warning-message ... ]
 .SH DESCRIPTION
 .I Shutdown
 provides an automated shutdown procedure which a super-user
 ]
 time [ warning-message ... ]
 .SH DESCRIPTION
 .I Shutdown
 provides an automated shutdown procedure which a super-user

-can use to notify users
-nicely when the system is shutting down, saving them from
-system administrators, hackers, and gurus, who would otherwise
-not bother with niceties.
-.LP
+can use to notify users nicely when the system is shutting down,
+saving them from system administrators, hackers, and gurus, who
+would otherwise not bother with such niceties.
+.PP

 .I Time
 .I Time

-is the time at which
-.I shutdown
-will bring the system down and
-may be the word
-.B now
-(indicating an immediate shutdown)
-or specify a future time in one of two formats:
-.BR + number
-and
-.RB hour : min.
-The first form brings the system down in
-.I number
-minutes
-and the second brings the system down at the time of day indicated
-(as a 24\-hour clock).
+is the time at which \fIshutdown\fP will bring the system down and
+may be the word \fInow\fP (indicating an immediate shutdown) or
+specify a future time in one of two formats: \fI+number\fP, or
+\fIyymmddhhmm\fP, where the year, month, and day may be defaulted
+to the current system values.  The first form brings the system down in
+\fInumber\fP minutes and the second at the absolute time specified.

 .PP
 .PP

-At intervals which get closer together as apocalypse approaches,
-warning messages are displayed at the terminals of all users on the
-system.  Five minutes before shutdown, or immediately if
-shutdown is in less than 5 minutes, logins are disabled by
-creating
-/etc/nologin
-and writing a message there.
-If this file exists when a user attempts to log in,
-.IR login (1)
-prints its contents
-and exits.
-The file is removed just before
-.I shutdown
-exits.
+Any other arguments comprise the warning message that is broadcast
+to users currently logged into the system; if no other arguments
+are provided, the warning message is read from the standard input.

 .PP
 .PP

-At shutdown time a
-message is written in the system log, containing the
-time of shutdown, who ran shutdown and the reason.
-Then a terminate signal is sent at
-.I init
-to bring the system down to single-user state.
+At intervals, which get closer together as apocalypse approaches,
+starting at ten hours before shutdown, warning messages are displayed
+at the terminals of all users on the system.  Five minutes before
+shutdown, or immediately if shutdown is in less than 5 minutes,
+logins are disabled by creating \fI/etc/nologin\fP and copying the
+warning message there.  If this file exists when a user attempts to
+log in, \fIlogin\fP(1) prints its contents and exits.  The file is
+removed just before \fIshutdown\fP exits.
+.PP
+At shutdown time a message is written in the system log, containing the
+time of shutdown, who ran shutdown and the reason.  Then a terminate
+signal is sent to \fIinit\fP to bring the system down to single-user state.

 Alternatively, if
 .B \-r,
 .B \-h,
 or
 .B \-k
 Alternatively, if
 .B \-r,
 .B \-h,
 or
 .B \-k

-was used, then
+is used, then

 .I shutdown
 will exec
 .IR reboot (8),
 .I shutdown
 will exec
 .IR reboot (8),


@@ -81,15 +62,33 @@ is to make people
 .I think
 the system is going down!)
 .PP
 .I think
 the system is going down!)
 .PP

+With the
+.B \-f
+option,
+.I shutdown
+arranges, in the manner of
+.IR fastboot (8),
+that when the system is rebooted the file systems will not
+be checked.  The
+.B \-n
+option prevents the normal
+.IR sync (2)
+before stopping.
+.PP

 The time of the shutdown and the warning message
 The time of the shutdown and the warning message

-are placed in /etc/nologin and should be used to
+are placed in \fI/etc/nologin\fP and should be used to

 inform the users about when the system will be back up
 and why it is going down (or anything else).
 .SH FILES
 inform the users about when the system will be back up
 and why it is going down (or anything else).
 .SH FILES

-.DT
-/etc/nologin   tells login not to let anyone log in
+.TP 15
+/etc/nologin
+tells login not to let anyone log in
+.TP 15
+/fastboot
+tells /etc/rc not to run fsck when rebooting

 .SH "SEE ALSO"
 .SH "SEE ALSO"

-login(1), reboot(8)
-.SH BUGS
-Only allows you to kill the system between now and 23:59 if
-you use the absolute time for shutdown.
+login(1), wall(1), fastboot(8), halt(8), reboot(8)
+.SH "BACKWARD COMPATIBILITY"
+The hours and minutes in the second time format may be separated by
+a colon (``:'') for backward compatibility.
+