The RFSD file operates a network server to provide RPC operations such as reading and writing files to solve the file operations between different devices on different platforms.

Functional characteristics
$ rfsd -h
rfsd v1.1.2.426 (2018-10-02) - RFSD File Server Deamon
Copyright (C) 2014-2018 ranfs.com
Usage: rfsd [opt] [arguments] ...
	-c [config_file]  set config file
	-o [log_file]     set output log file
	-l [log_level]    set log level: verb, dbg, info, warn, err
	-d Run as a daemon
	-p dump current config
	-v show version
	-h display this help

Note: When rfsd is running on Android iPhone iPad devices it needs to jailbreak the device. When running on Windows, Macosx, Linux platforms, depending on the files you need to access, choose whether to run with administrator privileges or root.

related resources
iPhone iPad
Linux Android