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From: jsdy@hadron.UUCP (Joseph S. D. Yao)
Newsgroups: net.unix
Subject: Re: KSH substring function (is it on your system?)
Message-ID: <101@hadron.UUCP>
Date: Thu, 28-Nov-85 00:50:45 EST
Article-I.D.: hadron.101
Posted: Thu Nov 28 00:50:45 1985
Date-Received: Fri, 29-Nov-85 10:41:18 EST
References: <121@rruxc.UUCP> <9@pixutl.UUCP> <813@whuxl.UUCP> <3002@sun.uucp>
Reply-To: jsdy@hadron.UUCP (Joseph S. D. Yao)
Organization: Hadron, Inc., Fairfax, VA
Lines: 12
Keywords: expr, sh, V6, PWB
Summary: 'expr' appeared in PWB 1.0.

In article <3002@sun.uucp> guy@sun.uucp (Guy Harris) writes:
>> > As long as we're talking about 'substring', 'expr' has a 'substr' option
>> > that used to be documented in V6.
>V6?  *V6?*  I don't remember any "expr" command in V6; the main use of
>"expr" is between backquotes in the shell, and the V6 shell didn't have
>backquotes (alas).  V7's "expr" had them, as did S3's; ...

My first memory of "expr" is in PWB 1.0, which pre-dated V7.  It may
also have been in V6.5; I don't rightly recall.
-- 

	Joe Yao		hadron!jsdy@seismo.{CSS.GOV,ARPA,UUCP}