netcat命令

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1 2	广播UDP消息给局域网内的所有主机<br>server：nc -luk 9999 client:  echo  "test data" | nc -u -b 255.255.255.255 9999

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1	socat - UDP-DATAGRAM:255.255.255.255:24000,broadcast

https://www.xp.cn/jishu-php-3044.html

https://www.cnblogs.com/oloroso/p/4610563.html