rpc_prog/vers

The name of an RPC program followed by a / and the version number or a range of version numbers. 

endpoint_type

One of dgram (for connectionless sockets), stream (for connection mode sockets), or tli (for TLI endpoints).

proto

May be * (for all supported transports), a net type, a net ID, or a comma separated list of net type and net ID. 

flags

Either wait or nowait.

user

Must exist in the effective passwd database. 

pathname

Full path name of the server daemon. 

args

Arguments to be passed to the daemon on invocation.