j1939spy(1) on Linux
The text e6d86faa1a17, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
manual page for j1939spy 2020.11.0-1
Flags it lists
-
--block -
--promisc -
--time -
--verbose -
-P -
-b -
-t -
-v