look(1) on OpenBSD
The text 0f2c37d8fdd1, as OpenBSD 3.3, OpenBSD 3.2, OpenBSD 3.1, OpenBSD 3.0, OpenBSD 2.9, OpenBSD 2.8, OpenBSD 2.7 shipped it.
display lines beginning with a given string
Flags it lists
-
-d -
-f -
-t