tee(1) on OpenBSD
The text 808a950cdb8e, as OpenBSD 4.1, OpenBSD 4.0, OpenBSD 3.9, OpenBSD 3.8, OpenBSD 3.7, OpenBSD 3.6, OpenBSD 3.5, OpenBSD 3.4 shipped it.
pipe fitting
Flags it lists
-
-a -
-i