posixshmcontrol(1) on FreeBSD
The text da084972123d, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE shipped it.
Control POSIX shared memory segments
Flags it lists
-
-h -
-n
The text da084972123d, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE shipped it.
Control POSIX shared memory segments
-h
-n