FSIRAND(8) System Manager's Manual FSIRAND(8)
fsirand - install random inode generation numbers
fsirand [ -p ] special
fsirand installs random inode generation numbers on all the inodes on
device special, and also installs a filesystem ID in the superblock.
This helps increase the security of filesystems exported by NFS.
fsirand must be used only on an unmounted filesystem that has been
checked with fsck(8). The only exception is that it can be used on the
root filesystem in single-user mode, if the system is immediately re-
-p Print out the generation numbers for all the inodes, but do not
change the generation numbers.
9 September 1987 FSIRAND(8)