Exports and unexports directories to NFS clients.
/usr/sbin/exportfs [ -a ] [ -v ] [ -u ] [ -i ] [ -fFile ] [ -oOption [ ,Option ... ] ] [ Directory ]
The exportfs command makes local directories available for Network File System (NFS) clients to mount. This command is normally invoked during system startup by the /etc/rc.nfsfile and uses information in the /etc/exports file to export one or more directories, which must be specified with full path names.
The /etc/xtab file lists directories that are currently exported. To display this file, enter the exportfs command without flags or arguments. To alter the file or to alter the characteristics of one of its directories, root users can edit the /etc/exports file and run the exportfs command. Such alterations can be done at any time. Never edit the /etc/xtab file directly.
Note: You cannot export a directory that is either a parent directory or a subdirectory of one that is currently exported and within the same file system.
|-a||Exports all directories listed in the /etc/exports file.|
|-v||Prints the name of each directory as it is exported or unexported.|
|-u||Unexports the directories you specify. When used with the -a flag, unexports all directories listed in the /etc/exports file.|
|-i||Allows the exporting of directories not specified in the exports file or ignores the options in the /etc/exports file. Normally the exportfscommand consults the /etc/exports file for the options associated with the exported directory.|
|-f File||Specifies an export file, other than the /etc/exports file, that contains a list of directories that you can export. This file should follow the same format as the /etc/exports file. NOTE: This alternate file will not be used for exporting directories automatically when the system and NFS is started. The /etc/exports file is the only file that is supported for specifying directories to export at system start.|
|-oOptions||Specifies optional characteristics for the exported directory. You
can enter more than one variable by separating them with commas. Choose
from the following options:
In this example, the /home/notes directory is exported.
Note: For this command to work, the /home/notes directory must be specified in the /etc/exports file.
exportfs -u /home/notes
In this example, the /home/notes directory is unexported.
exportfs -i /home/zeus
In this example, the /home/zeus directory is exported without restrictions.
exportfs access=cowboys:oilers /home/notes -o
In this example, the /home/notes directory is exported and permits users of cowboys and oilers host machines to have access.
exports -i -o -root=zorro:silver /directory
In this example, the /directory directory is exported and allows root user access to zorro and silver host machines, regardless of the access permissions specified in the /etc/exports file.
|/etc/exports||Lists the directories that the server can export.|
|/etc/xtab||Lists currently exported directories.|
|/etc/hosts||Contains an entry for each host on the network.|
|/etc/netgroup||Contains information about each user group on the network.|
|/etc/rc.nfs||Contains the startup script for the NFS and NIS daemons.|
The chnfsexp command, mknfsexp command, rmnfsexp command, showmount command.
How to Export a File System Using Secure NFS in AIX 5L Version 5.1 System Management Guide: Communications and Networks.
List of NFS Commands and List of NFS Files.
Network File System (NFS) Overview for System Management in AIX 5L Version 5.1 System Management Guide: Communications and Networks.