Automatically mount/unmount an NFS directory with “autofs”

The goal is to make an NFS-exported directory permanently available on a client. Normally this would be done by modifying the file “/ etc / fstab” so that the NFS directory is automatically included at system startup. However, “fstab” has the disadvantage that mounting fails if no network is available at system startup. Usually you create a script that hangs the directory only when a network connection was detected. Or you can enter the mount command in the file “/etc/rc.local”.