UNFS3 is a user-space implementation of the NFSv3 server specification. It provides a daemon for the MOUNT and NFS protocols,

Usage: ./unfsd [options]
-h display this short option summary
-u use unprivileged port for services
-d do not detach from terminal
-e <file> file to use instead of /etc/exports
-i <file> write daemon pid to given file
-n <port> port to use for NFS service
-m <port> port to use for MOUNT service
-t TCP only, do not listen on UDP ports
-p do not register with the portmapper
-s single user mode
-b enable brute force file searching
-l <addr> bind to interface with specified address
-r report unreadable executables as readable
-T test exports file and exit