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Path: utzoo!linus!decvax!harpo!eagle!mhuxl!ihnp4!inuxc!pur-ee!CS-Mordred!Pucc-H:Pucc-I:Pucc-K:ags
From: Pucc-H:Pucc-I:Pucc-K:ags@CS-Mordred.UUCP
Newsgroups: net.jokes.d
Subject: Valid and Invalid null commands
Message-ID: <135@pucc-k>
Date: Mon, 12-Dec-83 11:36:59 EST
Article-I.D.: pucc-k.135
Posted: Mon Dec 12 11:36:59 1983
Date-Received: Wed, 14-Dec-83 02:33:36 EST
Organization: Purdue University Computing Center
Lines: 33

Robert Reed writes:

------------------------------------------------------------------------
In the 4.2 csh (and maybe earlier), if you type just a vertical bar '|', you
get the message

	Invalid null command.

Next time I'll use a valid null command.
-------------------------------------------------------------------------

The same thing happens in 4.1c, and the message actually makes very good
sense.  If I were to nitpick, I would point out that it should really say
"Two invalid null commands" -- one before the '|' and one after.

Here are some other invalid null commands:

	echo this |
	| cat
	echo this || cat

Here are some VALID null commands:

	echo this ;
	; echo that
	echo this ;; echo that
	;;;



				Dave Seaman
				..!pur-ee!pucc-k!ags