Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!wuarchive!uwm.edu!src.honeywell.com!msi.umn.edu!cs.umn.edu!atc!s5000!nightowl!hawkmoon!det
From: det@hawkmoon.MN.ORG (Derek E. Terveer)
Newsgroups: comp.arch
Subject: Re: UNIX mind-set (was: How wrong is MS-DOS?)
Message-ID: <1991Jan15.105015.1581@hawkmoon.MN.ORG>
Date: 15 Jan 91 10:50:15 GMT
References: <8148@hub.ucsb.edu> <11313@lanl.gov> <8166@hub.ucsb.edu> <5339@idunno.Princeton.EDU>
Organization: Home System (One of the Eternal Champions); Eagan, MN, 55123-2507, USA
Lines: 15

pfalstad@phoenix.Princeton.EDU (Paul John Falstad) writes:

>Even if you turned on globbing for the "ls x*y" and turned it off for
>"ls | grep x*y", this would still be wrong, since the regular expression
>"x*y" does not do the same as the shell pattern "x*y".  The latter
>matches filenames starting in x and ending in y, while the former matches
>filenames containing a string consisting of an arbitrary number of x's
>followed by a y.

Except that because x*y was not quoted, the shell would expand the pattern
before grep saw it.  Grep's actions would depend on what x*y expanded to.
-- 
Derek "Tigger" Terveer	det@hawkmoon.MN.ORG - MNFHA, NCS - UMN Women's Lax, MWD
I am the way and the truth and the light, I know all the answers; don't need
your advice.  -- "I am the way and the truth and the light" -- The Legendary Pink Dots