control.lua

peripheral.find("modem", rednet.open)

print("Waiting for remote connection...")
while true do
    -- Always wait for a connection
    local remoteId, message = rednet.receive()
    if message == "connect" then
        print("Connected to "..remoteId)
        -- Main loop once connected
        while true do
            local sender, command = rednet.receive("command", 60)
            if sender == nil then
                print("Disconnected from "..remoteId)
                break
            else if sender == remoteId then
                print(command)
                shell.run(command)
            end
        end
    end
end