Node.self()
You will have to add the name of this node to the other notebook.
# sender_node = "<PUT HERE SOMETHING LIKE :"livebook_7louvomv--3732fjg3@127.0.0.1" FROM THE OTHER NOTEBOOK >"
sender_node = <>
Node.connect(sender_node)
pid = spawn(fn -> receive do msg -> IO.inspect(msg) end end)
Process.register(pid, :receiver)
IO.puts "Waiting"