reboot(1M)reboot(1M)NAMEreboot - reboot the system
SYNOPSIS
time] message]
time] message]
time] message]
DESCRIPTION
The command terminates all currently executing processes except those
essential to the system, then reboots the system, or halts, or makes
the partition ready for reconfiguration. When invoked without argu‐
ments, syncs all disks before rebooting the system.
Options
The command recognizes the following options:
Shut down the system and halt.
Shut down the system and reboot automatically (default).
Shut down the system to a ready-to-reconfigure state and reboot
if possible.
If the partition is unable to reboot, it will
stop at a ready-to-reconfigure state. However,
if the option is also specified, the system will
always stop at ready-to-reconfigure state. This
option is available only on systems that support
hardware partitions.
Shut down the system to a ready-to-reconfigure state and do not
reboot.
This option can be used only in combination with
the option. This option is available only on
systems that support hardware partitions.
Do not sync the file systems before shutdown.
The and options are ignored with this option.
Sync the file systems before shutdown;
for file systems that were cleanly mounted, mod‐
ify the flag from to (default).
Quick and quiet.
Suppress broadcast of warning messages, terminate
processes by brute force (with and immediately
call with arguments as indicated by the other
options (see reboot(2)). No logging is per‐
formed. The and options are ignored with this
option.
Specify what time
will bring the system down. time can be the word
(indicating immediate shutdown) or a future time
in one of two formats: and The first form brings
the system down in number minutes; the second
brings the system down at the time of day indi‐
cated (based on a 24-hour clock).
Display message at the terminals of all users on the sys‐
tem at decreasing intervals as reboot time
approaches. The message must not contain any
embedded double quotes.
This option is supported with
new core functionality product installed on Ita‐
nium-based systems. It reduces the system down‐
time as compared to normal reboot. If is not
installed on the system, this option is invalid.
At shutdown time a message is written in the file
(if it exists), containing the time of shutdown, who ran and the rea‐
son.
Only users with appropriate privileges can execute the command.
WARNINGS
does not invoke the shutdown scripts associated with subsystems to
bring them down in a cautious manner. See shutdown(1M).
If the option is used in a virtual partition environment on a parti‐
tionable system, then the requested reconfiguration will not take place
until all the virtual partitions on that hard partition are shut down
and the virtual partition monitor is rebooted.
AUTHOR
was developed by HP and the University of California, Berkeley.
FILES
Shutdown log
SEE ALSOvpartition(1), reboot(2), partition(5).
reboot(1M)
