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Re: question -

daemon@ATHENA.MIT.EDU (Barr3y Jaspan)
Wed Sep 5 14:37:09 1990

Date: Wed, 5 Sep 90 14:26:41 -0400
From: "Barr3y Jaspan" <bjaspan@ATHENA.MIT.EDU>
To: mjr@decuac.DEC.COM (Marcus J. Ranum)
Cc: zephyr@ATHENA.MIT.EDU
In-Reply-To: [16]


   Date: Wed, 5 Sep 90 13:52:40 -0400
   From: mjr@decuac.DEC.COM (Marcus J. Ranum)


	   I'm running zephyr on a non hesiod cluster, 

I am not familiar with how Zephyr works without Hesiod, so you may be
having problems I do not understand.

                                                       and have been having
   trouble getting zephyrgrams to work to groups using zwrite. Suppose I do:
   zctl subscribe message pizza
	   Does this subscribe me to pizza messages ? should I then be able
   to zephyrgram everyone who is interested in pizza with a:
   zwrite -c pizza

You seem to be confused as to the difference between "class" and
"instance".  All zephyr messages are identified by a triple:
<class,instance,recipient>.  The -c flag to zwrite sets the class; the
-i flag sets the instance.  "zctl subscribe message pizza" subscribes
you to zephyr messages sent to <message,pizza,*>.  

By default, zwrite sends to class "MESSAGE" and instance "PERSONAL".
Therefore, "zwrite -c pizza" *should* fail because you are not
subscribed to <pizza,personal,*>, but "zwrite -i pizza" should
succeede because you are subscribed to <message,pizza,*>.

Hope this information helps..

Barr3y Jaspan, bjaspan@athena.mit.edu

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