NAME
     exportfs - export and unexport directories to NFS clients

SYNOPSIS
     /usr/etc/exportfs [ -aiuv ] [ -o options ] [ pathname ]

DESCRIPTION
     exportfs makes a local directory or filename  available  for
     mounting  over  the  network by NFS clients.  It is normally
     invoked at boot time by the /etc/rc.local script,  and  uses
     information  contained  in  the  /etc/exports file to export
     pathname (which must be specified as a full pathname).   The
     super-user can run exportfs at any time to alter the list or
     characteristics  of  exported  directories  and   filenames.
     Directories  and  files  that  are  currently  exported  are
     listed in the file /etc/xtab.

     With no options or arguments, exportfs prints out  the  list
     of directories and filenames currently exported.

OPTIONS
     -a   All.  Export all pathnames listed in  /etc/exports,  or
          if  -u  is  specified,  unexport  all  of the currently
          exported pathnames.

     -i   Ignore the options in /etc/exports.  Normally, exportfs
          will  consult  /etc/exports  for the options associated
          with the exported pathname.

     -u   Unexport the indicated pathnames.

     -v   Verbose. Print each directory  or  filename  as  it  is
          exported or unexported.

     -o options
          Specify a comma-separated list of optional characteris-
          tics  for  the pathname being exported.  options can be
          selected from among:

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

          rw=hostname[:hostname]...
               Export  the  pathname  read-mostly.    Read-mostly
               means  exported  read-only  to  most machines, but
               read-write to those specified.  If not  specified,
               the pathname 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  the  UID  of
               the  user "nobody".  If the user "nobody" does not
               exist then the value 65534 is used.   Setting  the
               value   of  "anon"  to  65535  disables  anonymous
               access.  Note:  by  default  secure  NFS   accepts
               insecure  requests as anonymous, and those wishing
               for extra security can  disable  this  feature  by
               setting "anon" to 65535.

          root=hostname[: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 net-
               group(5)).  Each  client  in  the  list  is  first
               checked  for  in the /etc/hosts database, and then
               the /etc/netgroup  database.   The  default  value
               allows any machine to mount the given directory.

          secure
               Require clients to use a more secure protocol when
               accessing the directory.

FILES
     /etc/exports        static export information
     /etc/xtab           current state of exported pathnames
     /etc/netgroup

SEE ALSO
     exports(5), netgroup(5), showmount(8)

WARNINGS
     You cannot export a directory that is either a parent- or  a
     sub-directory  of  one that is currently exported and within
     the same filesystem.  It would be illegal, for  example,  to
     export  both /usr and /usr/local if both directories resided
     in the same disk partition.