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From: nather@utastro.UUCP (Ed Nather)
Newsgroups: net.unix
Subject: Re: question about csh quoting
Message-ID: <254@utastro.UUCP>
Date: Tue, 8-May-84 21:47:56 EDT
Article-I.D.: utastro.254
Posted: Tue May  8 21:47:56 1984
Date-Received: Sat, 12-May-84 09:25:29 EDT
References: <433@noscvax.UUCP>
Organization: UTexas Astronomy Dept., Austin, Texas
Lines: 44

[]
	"The UNIX Programming Environment" by Kernighan and Pike (copyright 1984
	by Bell Labs) states the following:

		"...Quotes of one kind protect quotes of the other kind:

			$ echo "Don't do that!"
			Don't do that!
			$
		..."

	When I tried that (4.2bsd with csh) it did the following:

			%echo "Don't do that!"
			": Event not found.
			%

	Is this something different in the c-shell, or is this an error in
	the c-shell?

You have banged into job control -- the "!" character signifies some previous
"event" to the C-Shell, despite the quote.  You'll find the same problem if
you try to send mail separating site names :  mail seismo!alice will get the
response "alice: Event not found."  The solution is to "escape" the "!" 
character with a backslash:  "Don't do that\!" will work fine.  So far as I
know, *only* the "!" character causes this kind of trouble with the C-Shell.
But it *is* a pain in the \*ss.


      Gary K. Sloane
      c/o Naval Ocean Systems Center
      COTD Building 1 Room B205
      San Diego, California 92152

      MILNET: sloane@nosc
      UUCP:   ...{sdcsvax}!noscvax!sloane
      DDD: (619) 225-8401 x391


-- 

                                       Ed Nather
                                       ihnp4!{ut-sally,kpno}!utastro!nather
                                       Astronomy Dept., U. of Texas, Austin