showmount

Showmount is a command line tool available in Unix-like operating systems that displays information about exported file systems from a Network File System (NFS) server. Using showmount, system administrators can examine the available NFS mounts on a server.

When running the "showmount" command without any options, it lists all the currently exported file systems by the NFS server. This includes the path of the exported directory and the list of clients that have mounted the exported file system.

The tool also allows administrators to specify options like "--exports" to display only the list of exported file systems and their respective paths, or "--all" to show all available information about the NFS server, including exported file systems and clients.

Furthermore, showmount can be used with the "-e" option to display the list of hosts that have mounted a specific NFS export. This can be helpful in troubleshooting scenarios or managing access to shared files.

It's worth noting that showmount relies on the NFS protocol, and it may only work if the server is actively running the NFS service and properly configured to export file systems. Overall, showmount is a valuable command line tool for NFS administration and troubleshooting.