假设netstat命令运行的结果我们存储在nowcoder.txt里，格式如下： Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 0.0.0.0:6160 0.0.0.0:* LISTEN tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN tcp 0 0 172.16.56.200:41856 172.16.34.144:3306 ESTABLISHED tcp 0 0 172.16.56.200:49822 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:49674 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:42316 172.16.34.143:3306 ESTABLISHED tcp 0 0 172.16.56.200:44076 172.16.240.74:6379 ESTABLISHED tcp 0 0 172.16.56.200:49656 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:58248 100.100.142.4:80 TIME_WAIT tcp 0 0 172.16.56.200:50108 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:41944 172.16.34.144:3306 ESTABLISHED tcp 0 0 172.16.56.200:35548 100.100.32.118:80 TIME_WAIT tcp 0 0 172.16.56.200:39024 100.100.45.106:443 TIME_WAIT tcp 0 0 172.16.56.200:41788 172.16.34.144:3306 ESTABLISHED tcp 0 0 172.16.56.200:58260 100.100.142.4:80 TIME_WAIT tcp 0 0 172.16.56.200:41812 172.16.34.144:3306 ESTABLISHED tcp 0 0 172.16.56.200:41854 172.16.34.144:3306 ESTABLISHED tcp 0 0 172.16.56.200:58252 100.100.142.4:80 TIME_WAIT tcp 0 0 172.16.56.200:49586 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:41754 172.16.34.144:3306 ESTABLISHED tcp 0 0 172.16.56.200:50466 120.55.222.235:80 TIME_WAIT tcp 0 0 172.16.56.200:38514 100.100.142.5:80 TIME_WAIT tcp 0 0 172.16.56.200:49832 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:52162 100.100.30.25:80 ESTABLISHED tcp 0 0 172.16.56.200:50372 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:50306 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:49600 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:41908 172.16.34.144:3306 ESTABLISHED tcp 0 0 172.16.56.200:60292 100.100.142.1:80 TIME_WAIT tcp 0 0 172.16.56.200:37650 100.100.54.133:80 TIME_WAIT tcp 0 0 172.16.56.200:41938 172.16.34.144:3306 ESTABLISHED tcp 0 0 172.16.56.200:49736 172.16.0.24:3306 ESTABLISHED tcp 0 0 172.16.56.200:41890 172.16.34.144:3306 ESTABLISHED udp 0 0 127.0.0.1:323 0.0.0.0:* udp 0 0 0.0.0.0:45881 0.0.0.0:* udp 0 0 127.0.0.53:53 0.0.0.0:* udp 0 0 172.16.56.200:68 0.0.0.0:* udp6 0 0 ::1:323 :::* raw6 0 0 :::58 :::* 7 现在需要你查看和本机3306端口建立连接并且状态是established的所有IP，按照连接数降序排序。你的脚本应该输出 10 172.16.0.24 9 172.16.34.144 1 172.16.34.143