NAME

halt, reboot, poweroff - stop the system.
SYNOPSIS

/sbin/halt [-n] [-w] [-d] [-f] [-i] [-p] [-h]
/sbin/reboot [-n] [-w] [-d] [-f] [-i]
/sbin/poweroff [-n] [-w] [-d] [-f] [-i] [-h]
DESCRIPTION

Halt notes that the system is being brought down in the file /var/log/wtmp, and then either tells the kernel to halt, reboot or poweroff the system.
If halt or reboot is called when the system is not in runlevel 0 or 6, in other words when it's running normally, shutdown will be invoked instead (with the -h or -r flag). For more info see the shutdown(8) manpage.

The rest of this manpage describes the behaviour in runlevels 0 and 6, that is when the systems shutdown scripts are being run.

OPTIONS

-n
Don't sync before reboot or halt.
-w
Don't actually reboot or halt but only write the wtmp record (in the /var/log/wtmp file).
-d
Don't write the wtmp record. The -n flag implies -d.
-f
Force halt or reboot, don't call shutdown(8).
-i
Shut down all network interfaces just before halt or reboot.
-h
Put all harddrives on the system in standby mode just before halt or poweroff.
-p
When halting the system, do a poweroff. This is the default when halt is called as poweroff.

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