66-hpr triggers the software shutdown procedure, or, with the -f option, it perform an immediate hardware shutdown. It is normally invoked through halt, poweroff or reboot wrappers installed by default at /etc/66. This program is a modified copy of s6-linux-init-hpr program.
s6-linux-init-hpr [ -H ] [ -l live ] [ -b banner ] [ -f ] [ -h | -p | -r ] [ -d | -w ] [ -W ]
This interface is the traditional sysvinit interface for the halt, poweroff and reboot programs. 66-hpr must always be called with one of the -h, -p or -r options.
*** WARNING *** The system is going down NOW!