nl(1) on OpenBSD
The text aeb90b8d207e, as OpenBSD 7.1, OpenBSD 7.0, OpenBSD 6.9, OpenBSD 6.8, OpenBSD 6.7, OpenBSD 6.6, OpenBSD 6.5, OpenBSD 6.4, OpenBSD 6.3, OpenBSD 6.2, OpenBSD 6.1 shipped it.
line numbering filter
Flags it lists
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-b -
-d -
-f -
-h -
-i -
-l -
-n -
-p -
-s -
-v -
-w