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Exporting File System for NFS in Linux

In Linux, we can export a directory for NFS clients by editing the /etc/exports file.
The /etc/exports file contains an entry for each directory that can be exported to NFS clients. This file is read automatically by the exportfs command during during system start-up through rc.nfs script. It execute the exportfs command and start the nfsd and mountd daemons. If we modify the entries in this file we must run the exportfs command before the changes can take affect.
Now let us export “/home/user” directory :
Edit /etc/exports file using vi editor and add following entry:
  • /home/user, root_squash)
    • This command will make /home/user directory available to
  • /home/user *(ro, root_squash)
    • This command will make /home/user directory available to all users on the network.
  • Here :
    • /home/user is the directory we want to export.
    • is the machine which is been allowed to see this directory over the network.
    • “ro” means mounting with read-only option.
    • “root_squash” means no root write access in this directory.
After editing the /etc/exports file, execute exportfs command to take changes effect :
  • /usr/sbin/exportfs -a


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