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



NAME
       reboot - restart the operating system

SYNOPSIS
       /usr/etc/reboot [ -dnq ] [ boot arguments ]

DESCRIPTION
       reboot  executes  the reboot(2) system call to restart the kernel.  The
       kernel is loaded into memory by the PROM monitor, which transfers  con-
       trol to it.  See boot(8S) for details.

       Although  reboot  can be run by the super-user at any time, shutdown(8)
       is normally used first to warn all users logged  in  of  the  impending
       loss of service.  See shutdown(8) for details.

       reboot  performs a sync(1) operation on the disks, and then a multiuser
       reboot is initiated.  See init(8) for details.

       reboot normally logs the reboot to the system log  daemon,  syslogd(8),
       and   places   a   shutdown   record   in  the  login  accounting  file
       /var/adm/wtmp.  These actions are inhibited if the -n or -q options are
       present.

   Power Fail and Crash Recovery
       Normally, the system will reboot itself at power-up or after crashes.

OPTIONS
       -d     Dump system core before rebooting.

       -n     Avoid the sync(1).  It can be used if a disk or the processor is
              on fire.

       -q     Quick.  Reboots quickly and ungracefully, without first shutting
              down running processes.

   Boot Arguments
       If a boot argument string is given, it is passed to the boot command in
       the PROM monitor.  The string must be quoted if it contains  spaces  or
       other  characters that could be interpreted by the shell.  If the first
       character of the boot argument string is a minus sign  `-'  the  string
       must be preceded by an option terminator string `--' For example:
              reboot -- -s
       to reboot and come up single user,
              reboot vmunix.test
       to reboot to a new kernel.  See boot(8S) for details.

FILES
       /var/adm/wtmp       login accounting file

SEE ALSO
       sync(1),   reboot(2),   boot(8S),  fastboot(8),  fasthalt(8),  fsck(8),
       halt(8), init(8), panic(8S), shutdown(8), syslogd(8)



                                  4 July 1990                        REBOOT(8)