reboot(2) [minix man page]

REBOOT(2)							System Calls Manual							 REBOOT(2)

NAME

       reboot - close down the system or reboot

SYNTAX

       #define _MINIX_SOURCE 1

       #include <unistd.h>

       int reboot(int how, ...)

DESCRIPTION

       Reboot() is used to close down the system.  It allows several ways of shutting down depending on how:

       reboot(RBT_HALT)
	    Halt the system and return to the monitor prompt.

       reboot(RBT_REBOOT)
	    Reboot the system by letting the monitor execute the "boot" command.

       reboot(RBT_PANIC)
	    Cause a system panic.  This is not normally done from user mode, but by servers using the sys_abort() kernel call.

       reboot(RBT_MONITOR, code, length)
	    Halt the system and let the monitor execute the given code of the given length.  (code is of type char * and length of type size_t.)

       reboot(RBT_RESET)
	    Reboot the system with a hardware reset.

       Reboot() may only be executed by the super-user.

DIAGNOSTICS

       If the call succeeds, it never returns.	If something went wrong, the return value is -1 and an error is indicated by errno.

SEE ALSO

       shutdown(8), reboot(8), halt(8), sync(1).

NOTES

       Minix  can not return to the monitor if running in real mode, or if started from MS-DOS.  This means that most of the reboot functions will
       change to a reset.

AUTHOR

       Edvard Tuinder (v892231@si.hhs.NL)

																	 REBOOT(2)

SHUTDOWN(8)						      System Manager's Manual						       SHUTDOWN(8)

NAME

       shutdown - graciously close the system down

SYNOPSIS

       shutdown [-hrRmk] [-x code] [time-specification [message]]

DESCRIPTION

       Shutdown  is a program which allows a system operator to close down the system in an nice way.  Shutdown informs the users why and when the
       system is going down.  This warning is issued 10 minutes before shutdown time and every minute in the last 5 minutes.  At this time (5 min-
       utes), shutdown creates a file /etc/nologin to prevent new users from logging in.

       Shutdown keeps a logfile of shutdowns.  Every shutdown is registered in /usr/adm/wtmp, if this file exists.  After these actions, a call is
       done to reboot(2) which actually brings the system down.

       Time-specification may be something like 15:00, 15.00, +15, or now for a shutdown at 3pm (twice), 15 minutes from now, or immediately.

       The message may be used to describe why the system is going down, it may also be typed on standard input with the -m option.

OPTIONS

       -h     This flag prevents the system from rebooting after the shutdown.	The system can now be powered off.  This is the default.

       -r     This flag indicates that the system should reboot after shutting down.

       -R     Reboot the system by resetting it.  Normally the kernel will try to return to the Boot Monitor.  With -R the system will	receive  a
	      hardware reset.

       -x code
	      Halt  the  system  and  let the Monitor execute the given code as if typed at the monitor prompt.  You can for instance use -x 'boot
	      hd0' as a very fast way to reboot "from the top."

       -m     Allows the operator to type a shutdown message on standard input, that will be added to the messages displayed on all terminals.

       -k     This option gives the possibility of terminating an already started shutdown.  This is only possible if shutdown time  has  not  yet
	      arrived.

       -C     Check  if the system crashed.  This option is not used at shutdown time, but at reboot time.  It tells if the file systems should be
	      checked by testing if the last entry in the wtmp file is a shutdown entry.  (A crude replacement for a file system clean flag.)

FILES

       /usr/adm/wtmp, /etc/nologin, /usr/adm/authlog

SEE ALSO

       reboot(2), wall(1), halt(8), boot(8).

AUTHOR

       Edvard Tuinder (v892231@si.hhs.NL)

																       SHUTDOWN(8)