NAME

halt, poweroff − stop the processor

SYNOPSIS

/usr/sbin/halt [ −lnqy ]
/usr/sbin/poweroff [ −lnqy ]

AVAILABILITY

SUNWcsr

DESCRIPTION

halt and poweroff write out any information pending to the disks and then stop the processor.  poweroff will have the machine remove power, if possible. 

halt and poweroff normally log the system shutdown to the system log daemon, syslogd(1M), and place a shutdown record in the login accounting file /var/adm/wtmp.  These actions are inhibited if the −n or −q options are present. 

OPTIONS

−l Suppress sending a message to the system log daemon, syslogd(1M) about who executed halt. 

−n Prevent the sync before stopping. 

−q Quick halt.  No graceful shutdown is attempted. 

−y Halt the system, even from a dialup terminal. 

FILES

/var/adm/wtmp login accounting file

SEE ALSO

init(1M), reboot(1M), shutdown(1M), syslogd(1M)

NOTES

halt does not execute the rc0 scripts as shutdown(1M) and init(1M) do. 

poweroff is equivalent to init 5. 
 

SunOS 5.4  —  Last change: 26 Apr 1994