Erlang的shell功能强大，这里我将它当成我的客户端。可以动态的输入你需要发送的内容，也可以动态的接收内容，就像调试器一样，在开发过程中起到很重要的作用。具体使用方式如下：
C:\Documents and Settings\Administrator>erl Eshell V5.10.4 (abort with ^G) 1> {ok, Socket} = gen_tcp:connect("localhost", 2000, [binary, {packet, 2}]). {ok,#Port<0.510>} 2> gen_tcp:send(Socket, "OK"). ok 3> receive {tcp, Socket, String} -> io:format("Client received = ~p~n", [String]) after 1000 -> exit end. Client received = <<"OK">> ok
具体内容不解释了。
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原文：http://www.cnblogs.com/kiven-code/p/3778552.html