irix - showmount (1)

     showmount - show all remote NFS mounts

     /etc/showmount [-a] [-d] [-e] [-x]	[host]

     Showmount lists all the clients that have remotely	mounted	a filesystem
     from host (or the local host if host is not given).  This information is
     maintained	by the mountd(1M) server on host, and is saved across crashes
     in	the file /etc/rmtab.

     -a	  Print	all remote mounts in the format	hostname:directory where
	  hostname is the name of the client, and directory is the root	of the
	  file system that has been mounted.

     -d	  List directories that	have been remotely mounted by clients.

     -e	  Print	the list of exported file systems.  For	each file system, list
	  the clients given mount access.

     -x	  Print	the list of exported file systems and all of their export
	  options, in the format described by exports(4).  This	option
	  overrides the	-e option.

     mountd(1M), exportfs(1M), exports(4)

     If	a client crashes, its entry will not be	removed	from /etc/rmtab	until
     it	reboots	and executes umount -a.