An article on medium.com highlighted that grep

was available in v4.

To quote Ken Thompson, grep appeared "sometime
before the 4th edition."

ok schwarze@

diff --git a/usr.bin/grep/grep.1 b/usr.bin/grep/grep.1
index 45db3a0..6e8d767 100644 (file)
--- a/usr.bin/grep/grep.1
+++ b/usr.bin/grep/grep.1
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: grep.1,v 1.42 2013/01/17 21:29:14 jmc Exp $
+.\"    $OpenBSD: grep.1,v 1.43 2015/01/13 04:45:34 daniel Exp $
 .\" Copyright (c) 1980, 1990, 1993
 .\"    The Regents of the University of California.  All rights reserved.
 .\"
@@ -28,7 +28,7 @@
 .\"
 .\"    @(#)grep.1      8.3 (Berkeley) 4/18/94
 .\"
-.Dd $Mdocdate: January 17 2013 $
+.Dd $Mdocdate: January 13 2015 $
 .Dt GREP 1
 .Os
 .Sh NAME
@@ -372,4 +372,4 @@ however, their use is strongly discouraged.
 The
 .Nm grep
 command first appeared in
-.At v6 .
+.At v4 .