.\" @(#)mount_union.8 8.6 (Berkeley) 3/27/94
.\" $FreeBSD$
.\"
.Dd November 30, 2006
.Dd September 10, 2016
.Dt MOUNT_UNIONFS 8
.Os
.Sh NAME
.Xr mount_nullfs 8
.Sh HISTORY
The
.Nm
.Nm mount_null
utility first appeared in
.Bx 4.4 .
It was renamed to
in
.Fx 5.0 .
.Pp
.Fl r