| FSIRAND(8) | System Manager's Manual | FSIRAND(8) | 
fsirand —
| fsirand | [ -F] [-p]
      [-xconstant]
      special | 
fsirand writes random inode generation numbers for all
  the inodes on device special. These random numbers make
  the NFS filehandles less predictable, increasing security of exported
  filesystems.
fsirand should be run on a clean and
    unmounted filesystem.
The options are as follows:
-F-p-x
    constantfsirand exits zero on success, non-zero on
    failure.
If fsirand receives a
    SIGINFO signal, statistics on the amount of work
    completed and estimated completion time (in minutes:seconds) will be written
    to the standard error output.
fsirand utility appeared in NetBSD
  1.3.
| September 11, 2016 | NetBSD 9.4 |