grep(1) on OpenBSD
The text 71b53592eef9, as OpenBSD 3.9, OpenBSD 3.8 shipped it.
file pattern searcher
Flags it lists
-
--binary-files -
--context -
--line-buffered -
-A -
-B -
-C -
-E -
-F -
-G -
-H -
-I -
-L -
-P -
-R -
-S -
-U -
-V -
-Z -
-a -
-b -
-c -
-e -
-f -
-h -
-i -
-l -
-n -
-o -
-q -
-s -
-v -
-w -
-x