windows：
netstat -ano|findstr es（查看已建立的链接）
TCP 127.0.0.1:50505 127.0.0.1:50506 ESTABLISHED 19428
TCP 127.0.0.1:50506 127.0.0.1:50505 ESTABLISHED 19428
TCP 127.0.0.1:50508 127.0.0.1:50509 ESTABLISHED 4512
TCP 127.0.0.1:50509 127.0.0.1:50508 ESTABLISHED 4512
TCP 192.168.0.123:50671 173.194.127.233:80 ESTABLISHED 19428
TCP 192.168.0.123:50785 173.194.127.251:80 ESTABLISHED 19428
TCP 192.168.0.123:50786 173.194.127.251:80 ESTABLISHED 19428
TCP 192.168.0.123:50794 173.194.127.251:80 ESTABLISHED 19428
TCP 192.168.0.123:56567 218.76.198.140:80 ESTABLISHED 3088
C:\Users\Administrator>tasklist |findstr 19428 （查看对应的应用）
firefox.exe 19428 Console 1 239,544 K
C:\Users\Administrator>netstat -b 5（查看活动链接，5秒刷新）
活动连接
协议 本地地址 外部地址 状态
TCP 127.0.0.1:50505 CL-wudi:50506 ESTABLISHED
[firefox.exe]
TCP 127.0.0.1:50506 CL-wudi:50505 ESTABLISHED
[firefox.exe]
TCP 127.0.0.1:50508 CL-wudi:50509 ESTABLISHED
[vmware.exe]
TCP 127.0.0.1:50509 CL-wudi:50508 ESTABLISHED
[vmware.exe]
TCP 192.168.0.123:50671 hkg03s16-in-f9:http TIME_WAIT
