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this 'path' would be based on the server's location.. so it probably won't really help it, unless the file's on the server already, in which case, creating a path browser of sorts where you select the path/filename to send to the function for whatever it is you are doing.
unless you have an ftp or other form of server running on the local machine the server can access, or they are on the same network.. there is almost nothing the server can do without the help of the user, as it should be. Use the file upload.