ktrace(1) on FreeBSD
The text 52a9d51a888d, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
enable kernel process tracing
Flags it lists
-
-C -
-a -
-c -
-d -
-f -
-g -
-i -
-p -
-t