The shutdown command sends a warning message, then terminates active processes on a system to reach a specified run level. Specifying run level 0 shuts down the OS and displays the OpenBoot prompt.
In this example, these command options shut down the OS to the OpenBoot prompt:
-g0 – Specifies a grace period of 0 seconds.
-i0 – Specifies the run level 0, which is equivalent to the init 0 command.
-y – Pre-answers the confirmation question so that the command runs without user intervention.
# shutdown -g0 -i0 -y # svc.startd: The system is coming down. Please wait. svc.startd: 106 system services are now being stopped. Sep 12 17:52:11 systemA syslogd: going down on signal 15 svc.startd: The system is down. syncing file systems...done Program terminated SPARC T7-1, No Keyboard ... {0} ok