根據進程的PID查詢對應端口號

經過PID查看端口號：netstat -anop|grep pid
——其中的status

ESTABLISHED：已經創建鏈接，正在進行數據交換，接收對方發來的數據
LISTEN：偵聽來自遠方的TCP鏈接請求，表示端口正在開放，能夠提供服務
SYN_SENT：發送鏈接請求等待匹配請求
FIN_WAIT_1：等待遠程TCP鏈接中斷的請求，或對先前中斷請求的確認
FIN_WAIT_2：從遠程TCP等待鏈接中斷請求
CLOSE_WAIT：等待從本地用戶發來的鏈接中斷請求
CLOSING：等待遠程TCP鏈接中斷的確認，表示端口認爲或防火牆關閉或服務被關停
LAST_ACK：等待原來發向遠程TCP鏈接中斷請求的確認
TIME_WAIT：正在等待鏈接
CLOSED：沒有任何鏈接

如:

[lenovo@supervisor ~]$ netstat -anop|grep 38670
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)               status
tcp        0      0 :::6707                     :::*                        LISTEN      38670/java          off (0.00/0/0)
tcp        0      0 ::ffff:192.168.0.219:53900  ::ffff:192.168.0.65:3306    ESTABLISHED 38670/java          keepalive (3281.61/0/0)
tcp        0      0 ::ffff:192.168.0.219:53901  ::ffff:192.168.0.65:3306    ESTABLISHED 38670/java          keepalive (3281.63/0/0)
tcp        0      0 ::ffff:192.168.0.219:43923  ::ffff:192.168.0.216:2181   ESTABLISHED 38670/java          off (0.00/0/0)
unix  2      [ ]         STREAM     CONNECTED     9828854 38670/java          
unix  2      [ ]         STREAM     CONNECTED     9828818 38670/java

lsof -p PID  //查看進程pid打開的文件描述符，(通常狀況下，一個進程能夠打開的文件描述符的個數不超過1024)