How do I shutdown a Solaris UNIX machine or server using command prompt?
You need to use the shutdown command as follows (you must login as root):
# shutdown -y -g0 -i S
The following command will scheduled a shutdown in 180 seconds and will display message “Memory upgrade, save all data ” to all logged in members:
shutdown -i S -g 180 "*** Memory upgrade, save all data ***"
The shutdown command can be aborted before completing 180 seconds counter.
You can also use the poweroff command its is equivalent init 5:
# init 5