reboot(8)
- NetBSD Manual Pages
REBOOT(8) NetBSD System Manager's Manual REBOOT(8)
NAME
reboot, halt - stopping and restarting the system
SYNOPSIS
halt [-dlnpq]
reboot [-dlnq]
DESCRIPTION
The halt and reboot utilities flush the file system cache to disk, send
all running processes a SIGTERM, wait up to 30 seconds for them to die,
send a SIGKILL to the survivors and, respectively, halt or restart the
system. The action is logged, including entering a shutdown record into
the login accounting file.
The options are as follows:
-d Create a dump before halting or restarting. This option is use-
ful for debugging system dump procedures or capturing the state
of a corrupted or misbehaving system.
-l Send a message via syslog(3) before halting or restarting.
-n Do not flush the file system cache. This option should be used
with extreme caution.
-p Attempt to powerdown the system. If the powerdown fails, or the
system does not support software powerdown, the system will halt.
This option is only valid for halt.
-q Do not give processes a chance to shut down before halting or
restarting. This option should not normally be used.
Normally, the shutdown(8) utility is used when the system needs to be
halted or restarted, giving users advance warning of their impending
doom.
SEE ALSO
syslog(3), utmp(5), boot(8), shutdown(8), sync(8)
BUGS
The single user shell will ignore the SIGTERM signal. To avoid waiting
for the timeout when rebooting or halting from the single user shell, you
have to exec reboot or exec halt.
HISTORY
A reboot command appeared in Version 6 AT&T UNIX.
NetBSD 1.4 January 20, 1998 1
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