fsirand(1bsd)

fsirand -- (BSD) install random inode generation numbers

Synopsis

   /usr/ucb/fsirand [-p] special

Description

fsirand installs random inode generation numbers on all the inodes on device special, and also installs a file system ID in the superblock. This helps increase the security of file systems exported by NFS.

fsirand must be used only on an unmounted file system that has been checked with fsck(1M). The only exception is that it can be used on the root file system in single-user mode, if the system is immediately re-booted afterwards.

The -p option prints out the generation numbers for all the inodes, but does not change the generation numbers.

References

fsck(1M)