showmount [-a | -d | -e] [-3] [
Queries the NFS mount daemon, mountd, to show which clients have mounted which directories from the NFS server. Called without flags, showmount prints a list of NFS client IP addresses to standard output;
nfs_server defaults to localhost.
Use NFS Version 3.
List clients with the exports they're mounting, in the form
List exports that are mounted on clients, instead of client IP addresses.
Print the server's list of NFS exports to standard output.