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From: arturo@humming.UUCP (Arturo Perez)
Newsgroups: net.unix,net.unix-wizards
Subject: question-- Bourne (and C) SHELL
Message-ID: <150@humming.UUCP>
Date: Thu, 14-Aug-86 10:12:45 EDT
Article-I.D.: humming.150
Posted: Thu Aug 14 10:12:45 1986
Date-Received: Thu, 14-Aug-86 21:44:49 EDT
References: <1751@ittatc.ATC.ITT.UUCP> <7028@utzoo.UUCP>
Reply-To: arturo@humming.UUCP (Arturo Perez)
Organization: Kurzweil A.I. Waltham, Mass.
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Xref: mnetor net.unix:5195 net.unix-wizards:7541

Here's something I've wanted to do for a while but I can't seem to find the
way to do it.

In the csh you can do something like

ls foo
if (! $status) then
   echo "foo exists"
endif

The  key  thing  here  is  the  ability  to NOT the value of status. How is
this similar thing done in Bourne shell.

if ! ls foo
then
	echo foo does not exist
fi

In  summary,  how can I take the logical NOT of a command's return value in
the Bourne shell (which is God's gift to U**X :-)?
-- 
"Life is but a dream" - Lope de Vega
    "...for some and a NIGHTMARE for others!" Merlin, "Excalibur", the movie
Disclaimer?  What disclaimer?  I can back everything up with as much 
drivel as you like!