fuser(1) on FreeBSD
The text 4f7bdd59027d, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
list IDs of all processes that have one or more files open
Flags it lists
-
-M -
-N -
-c -
-f -
-k -
-m -
-s -
-u