freebsd man page for nullfs

NULLFS(5)						      BSD File Formats Manual							 NULLFS(5)

NAME
     nullfs -- null file system

SYNOPSIS
     To enable support for this driver, place the following line in the kernel configuration file:

	   options NULLFS

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   nullfs_load="YES"

DESCRIPTION
     The nullfs driver will permit the FreeBSD kernel to mount a loopback file system sub-tree.

EXAMPLES
     To mount a nullfs file system:

	   mount_nullfs /usr/ports /home/devel/ports

SEE ALSO
     fstab(5), mount_nullfs(8)

HISTORY
     The nullfs layer first appeared in 4.4BSD.

AUTHORS
     The nullfs kernel implementation was written by John Heideman.

     This manual page was written by Daniel Gerzo <danger@FreeBSD.org>.

BSD
								 February 10, 2015							       BSD