realplayer插件1）如何查看本机所开端口：用net(20)

Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),

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Minimum = 10ms, Maximum = 10ms, Average = 10ms

从上面我就可以知道从我的计算机到202.96.105.101一共通过了202.107.208.187 ，202.107.210.214 , 61.153.112.70 , 61.153.112.89 , 202.96.105.149 , 202.96.105.97这几个路由。

-s count Timestamp for count hops.

指定 count 指定的跃点数的时间戳。

此参数和-r差不多，只是这个参数不记录数据包返回所经过的路由，最多也只记录4个。

-j host-list Loose source route along host-list.

利用 computer-list 指定的计算机列表路由数据包。连续计算机可以被中间网关分隔（路由稀疏源）IP 允许的最大数量为 9。

-k host-list Strict source route along host-list.

连续计算机不能被中间网关分隔ip 允许的最大数量为 9。成交确认委托是指投资者买卖双方达成成交协议，或投资者拟与定价委托成交，委托主办券商以指定价格和数量与指定对手方确认成交的指令。

-w timeout Timeout in milliseconds to wait for each reply.

指定超时间隔，单位为毫秒。

此参数没有什么其他技巧。

ping命令的其他技巧：在一般情况下还可以通过ping对方让对方返回给你的TTL值大小，粗略的判断目标主机的系统类型是Windows系列还是UNIX/Linux系列，一般情况下Windows系列的系统返回的TTL值在100-130之间，而UNIX/Linux系列的系统返回的TTL值在240-255之间，当然TTL的值在对方的主机里是可以修改的，Windows系列的系统可以通过修改注册表以下键值实现：

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