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From: gray@SU-ISL.ARPA
Newsgroups: net.unix-wizards
Subject: Re: Origin of the name grep
Message-ID: <12841@sri-arpa.UUCP>
Date: Sun, 26-Aug-84 11:00:08 EDT
Article-I.D.: sri-arpa.12841
Posted: Sun Aug 26 11:00:08 1984
Date-Received: Thu, 30-Aug-84 19:41:32 EDT
Lines: 5

From:  "R. M. Gray" <gray@SU-ISL.ARPA>

grep comes from the ed command
g/regular-expression/p
(see p. 18 of The Unix Programming Environment by Kernighan & Pike)