Name
shutdown
Synopsis
shutdown [options
]when
[message
]
Terminates all processing. when
may be a specific time (in hh
:mm
format), a number of minutes to wait (in +
m
format), or now. A broadcast message
notifies all users to log off the system. Processes are signaled with SIGTERM
, to allow them to exit gracefully. Only privileged users can execute the shutdown command. Broadcast messages, default or defined, are displayed at regular intervals during the grace period; the closer the shutdown time, the more frequent the message.
Options
- -h
Halt the system when shutdown is complete.
- -k
Print the warning message, but suppress actual shutdown.
-
-o
[
-n]
Execute halt or reboot instead of calling init. Passing -n also prevents a file cache flush.
- -r
Reboot the system when shutdown is complete.
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