SKS-FTP

function connect()
rednet.open("top")
rednet.open("back")
rednet.open("right")
rednet.open("left")
end

function disconnect()
rednet.close("top")
rednet.close("back")
rednet.close("right")
rednet.close("left")
end

function receiveFile(path,inputid)
local file = fs.open(path,"w")
id, msg = rednet.receive()
if id == inputid then
file.write((msg))
file.close()
end
end

function sendFile(path,inputid)
local file = fs.open(path,"r")
content = file.readAll()
rednet.open("top")
rednet.send(inputid,(content))
file.close()
end

tArgs = {...}
if tArgs[1] == "send" then connect() sendFile(tArgs[2],tArgs[3]) disconnect()
elseif tArgs[1] == "receive" then connect() receiveFile(tArgs[2],tArgs[3]) disconnect()
end