119 lines
2.9 KiB
Groff
119 lines
2.9 KiB
Groff
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SHUTDOWN(8) Minix Programmer's Manual SHUTDOWN(8)
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NAME
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shutdown - graciously close the system down
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SYNOPSIS
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shutdown [-hrRmk] [-x code] [time-specification [message]]
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DESCRIPTION
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Shutdown is a program which allows a system operator to close down the
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system in an nice way. Shutdown informs the users why and when the system
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is going down. This warning is issued 10 minutes before shutdown time
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and every minute in the last 5 minutes. At this time (5 minutes),
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shutdown creates a file /etc/nologin to prevent new users from logging
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in.
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Shutdown keeps a logfile of shutdowns. Every shutdown is registered in
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/usr/adm/wtmp, if this file exists. After these actions, a call is done
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to reboot(2) which actually brings the system down.
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Time-specification may be something like 15:00, 15.00, +15, or now for a
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shutdown at 3pm (twice), 15 minutes from now, or immediately.
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The message may be used to describe why the system is going down, it may
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also be typed on standard input with the -m option.
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OPTIONS
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-h This flag prevents the system from rebooting after the shutdown.
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The system can now be powered off. This is the default.
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-r This flag indicates that the system should reboot after shutting
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down.
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-R Reboot the system by resetting it. Normally the kernel will try to
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return to the Boot Monitor. With -R the system will receive a
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hardware reset.
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-x code
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Halt the system and let the Monitor execute the given code as if
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typed at the monitor prompt. You can for instance use -x 'boot hd0'
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as a very fast way to reboot "from the top."
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-m Allows the operator to type a shutdown message on standard input,
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that will be added to the messages displayed on all terminals.
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-k This option gives the possibility of terminating an already started
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shutdown. This is only possible if shutdown time has not yet
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arrived.
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1
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SHUTDOWN(8) Minix Programmer's Manual SHUTDOWN(8)
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-C Check if the system crashed. This option is not used at shutdown
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time, but at reboot time. It tells if the file systems should be
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checked by testing if the last entry in the wtmp file is a shutdown
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entry. (A crude replacement for a file system clean flag.)
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FILES
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/usr/adm/wtmp, /etc/nologin, /usr/adm/authlog
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SEE ALSO
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reboot(2), wall(1), halt(8), boot(8).
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AUTHOR
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Edvard Tuinder (v892231@si.hhs.NL)
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