kdump(1) on OpenBSD
The text c2b6e7cb6ddf, as OpenBSD 3.1, OpenBSD 3.0, OpenBSD 2.9, OpenBSD 2.8, OpenBSD 2.7 shipped it.
display kernel trace data
Flags it lists
-
-R -
-T -
-d -
-e -
-f -
-l -
-m -
-n -
-t