NAME
exports - define remote mount points for NFS mount requests

SYNOPSIS
/etc/exports

DESCRIPTION
Exports specifies remote mount points for the NFS mount protocol
per the NFS server specification; see "Network File System
Protocol Specification, RFC1094".

Each line in the file specifies one remote mount point. The first
field is the mount point directory path followed optionally by
export options and specific hosts separated by white space. Only
the first entry for a given local file system may specify the
export options, since these are handled on a per local file system
basis. If no specific hosts are specified, the mount point is
exported to all hosts.

The export options are as follows: -root=<uid> specifies how to map
root’s uid (default -2). The option -r is synonymous for -root in
an effort to be backward compatible with older export file formats.

-ro specifies that the file system should be exported Read-only
(default Read/Write). The option -o is synonymous for -ro in an
effort to be backward compatible with older export file formats.

For example:
/usr -root=0 rickers snowhite.cis.uoguelph.ca
/usr/local 131.104.48.16
/u -root=5
/u2 -ro

given that /usr, /u and /u2 are local file system mount points,
specifies the following:
/usr is exported to hosts rickers and snowhite.cis.uoguelph.ca
with root mapped to root.
/usr/local is exported to host 131.104.48.16 with root mapped
to root.
/u is exported to all hosts with root mapped to uid 5.
/u2 is exported to all hosts Read-only with root mapped to -2.

Note that /usr/local -root=5 would have been incorrect, since /usr
and /usr/local reside in the same local file system.

FILES
/etc/exports