shutdown - close down the system at a given time
/usr/ucb/shutdown [-fhknr] time [warning-message]...
shutdown provides an automated procedure to notify users when the system is to be shut down. time specifies when shutdown will bring the system down; it may be the word now (indicating an immediate shutdown), or it may specify a future time in one of two formats: +number and hour:min. The first form brings the system down in number minutes, and the second brings the system down at the time of day indicated in 24-hour notation.
At intervals that get closer as the apocalypse approaches, warning messages are displayed at terminals of all logged-in users, and of users who have remote mounts on that machine.
At shutdown time a message is written to the system log daemon, syslogd(1M), containing the time of shutdown, the instigator of the shutdown, and the reason. Then a terminate signal is sent to init, which brings the system down to single-user mode.
As an alternative to the above procedure, these options can be specified:
-f
-h
-k
-n
-r
/etc/rmtab
See attributes(5) for descriptions of the following attributes:
|
fastboot(1B), login(1), halt(1M), reboot(1M), syslogd(1M), sync(2), rmtab(4), attributes(5)
Only allows you to bring the system down between now and 23:59 if you use the absolute time for shutdown.
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Created 1996-2024 by Maxim Chirkov Добавить, Поддержать, Вебмастеру |