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Full Discussion: Understanding shutdown
Top Forums UNIX for Dummies Questions & Answers Understanding shutdown Post 302288217 by Perderabo on Monday 16th of February 2009 06:04:10 PM
Old 02-16-2009
You should have a man page that states

"-t sec
Tell init(8) to wait sec seconds between sending processes the warning and the kill signal, before changing to another runlevel."

When the shutdown occurs, a program called init must kill running processes. To do this it first does the equivalent of a "kill -15 pid" and if that doesn't work, it will do the equivalent of a "kill -9 pid". The -t is affecting how long init waits between the two kills. The default is 5 seconds. So a "-t 120" might take longer to complete the shutdown. But if the first kill works, init will never try the second kill. In that case, the -t could have no effect at all.
 

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LEARN ABOUT OPENSOLARIS

killall

killall(1M)						  System Administration Commands					       killall(1M)

NAME

       killall - kill all active processes

SYNOPSIS

       /usr/sbin/killall [signal]

DESCRIPTION

       killall is used by shutdown(1M) to kill all active processes not directly related to the shutdown procedure.

       killall terminates all processes with open files so that the mounted file systems will be unbusied and can be unmounted.

       killall sends signal (see kill(1)) to the active processes. If no signal is specified, a default of 15 is used.

       The killall command can be run only by the super-user.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       kill(1), ps(1), fuser(1M), shutdown(1M), signal(3C), attributes(5)

SunOS 5.11							    14 Sep 1992 						       killall(1M)
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