zfs-unmount(8) on FreeBSD
The text 190f56c95467, as FreeBSD 15.1-RELEASE, FreeBSD 15.0-RELEASE shipped it.
manage mount state of ZFS filesystems
Flags it lists
-
--json -
-O -
-R -
-a -
-f -
-j -
-l -
-o -
-u -
-v