NAME

halt − stop the processor

SYNOPSIS

/etc/halt [ −n ] [ −q ] [ −y ] [ −l ]

DESCRIPTION

The halt command stops all but one processor, runs the command script rc.shutdown with the argument halt, executes a sync system call, and then stops the remaining processor.  The machine does not reboot, even if auto-reboot mode is selected on the front panel. 

OPTIONS

−q Halt quickly without executing the shutdown script.  This option is not recommended except in an emergency. 

−n Skip the sync before halting.  The −q option should be used with −n if the rc.shutdown script runs commands that sync the disks (such as umount(8)). 

−y Force the system to halt from a dialup. 

−l Halt normally logs the halt using syslog(8).  This action is inhibited if the −l option is present. 

Halt places a shutdown record in the login accounting file /usr/adm/wtmp unless the −n or −q options are present. 

FILES

/etc/rc.shutdown system shutdown script
/usr/adm/wtmp login accounting file

SEE ALSO

fastboot(8), reboot(8), shutdown(8), syslogd(8), rc(8), sync(2)

BUGS

The shutdown script should know not to sync the disks when halt is given the -n option. 

4BSD