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EXPORTS(5)							    EXPORTS(5)

NAME
       exports, xtab - lists of directories to export to NFS clients

SYNOPSIS
       /etc/exports

       /etc/xtab

DESCRIPTION
       NOTE:  If  NetInfo  is  running,	 this  information is derived from the
       /exports directory in NetInfo, instead of the /etc/exports file.

       The /etc/exports file contains entries  for  directories	 that  can  be
       exported	 to  NFS  clients.   Changes  to  /etc/exports require running
       exportfs(8) for the changes to affect the daemon's operation.   Entries
       added  by  the  NFSManager application automatically result in exportfs
       being run.  Manually done changes require rerunning exportfs(8).

       Only when this file is present at boot time, or entries	exist  in  the
       local  netinfo  /exports	 directory,  does  the rc.local script execute
       exportfs(8)  and	 start	the  NFS  filesystem   daemons	 nfsd(8)   and
       rpc.mountd(8).

       The  /etc/xtab file contains entries for directories that are currently
       exported.   This	 file  should  only  be	 accessed  by  programs	 using
       getexportent  (see  exportent(3)).   (Use  the -u option of exportfs to
       remove entries from this file).

       An entry for a directory consists of a line of the following form:

	      directory	  -option[,option ]...

       directory	   is the pathname of a directory (or file).

       option		   is one of

			   ro	  Export  the  directory  read-only.   If  not
				  specified,  the  directory is exported read-
				  write.

			   rw=hostnames[:hostname]...
				  Export  the  directory  read-mostly.	 Read-
				  mostly means read-only to most machines, but
				  read-write  to  those	 specified.   If   not
				  specified,  the  directory is exported read-
				  write to all.

			   anon=uid
				  If a request comes from an unknown user, use
				  uid  as  the	effective user ID.  Note: root
				  users	 (uid	0)   are   always   considered
				  “unknown” by the NFS server, unless they are
				  included in the “root”  option  below.   The
				  default   value   for	 this  option  is  -2.
				  Setting  “anon”  to  -1  disables  anonymous
				  access.

			   root=hostnames[:hostname]...
				  Give root access only to the root users from
				  a specified hostname.	 The default is for no
				  hosts to be granted root access.

			   access=client[:client]...
				  Give	mount access to each client listed.  A
				  client  can  either  be  a  hostname,	 or  a
				  netgroup  (see netgroup(5)).	Each client in
				  the  list  is	 first	checked	 for  in   the
				  netgroup   database,	 and  then  the	 hosts
				  database.  Simple hostnames for machines  in
				  the  server's	 domain	 should	 be used.  The
				  default value allows any  machine  to	 mount
				  the given directory.

       A  ``#''	 anywhere  in the file indicates a comment that extends to the
       end of the line.

EXAMPLE
       /usr	 -access=clients     # export to my clients
       /usr/local		     # export to the world
       /usr2	 -access=hermes:zip:tutorial# export to only these machines
       /usr/sun	 -root=hermes:zip    # give root access only to these
       /usr/new	 -anon=0	     # give all machines root access
       /usr/bin	 -ro		     # export read-only to everyone
       /usr/stuff		     -access=zip,anon=-3,ro# several options on one line

FILES
       /etc/exports
       /etc/xtab
       /etc/hosts
       /etc/netgroup
       rc.local

SEE ALSO
       exportent(3), hosts(5), netgroup(5), exportfs(8), nfsd(8)

WARNINGS
       You cannot export either a parent directory or  a  subdirectory	of  an
       exported	 directory  that  is  within the same filesystem.  It would be
       illegal, for instance, to export	 both  /usr  and  /usr/local  if  both
       directories resided on the same disk partition.

				19 October 1987			    EXPORTS(5)
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