linux下根據連接埠號碼查詢對應進程 我們經常使用netstat -lnp可以查詢對應連接埠跟進程，但是有些連接埠是在netstat -lnp裡卻沒顯示對應的進程pid，如果我們使用某個連接埠已經被佔用，需要找到對應佔用連接埠的進程關閉之類的，此時可以通過lsof來查詢對應連接埠的對應進程pid號， www.2cto.com [html] [wei@vm-cbu-qa-168-13 web-deploy]$ netstat -lnp (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:7008 0.0.0.0:* LISTEN 27709/java tcp 0 0 0.0.0.0:6208 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:800 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:7009 0.0.0.0:* LISTEN 27709/java tcp 0 0 127.0.0.1:15777 0.0.0.0:* LISTEN - www.2cto.com tcp 0 0 0.0.0.0:2049 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:15778 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:35559 0.0.0.0:* LISTEN 27709/java tcp 0 0 0.0.0.0:55336 0.0.0.0:* LISTEN 27709/java tcp 0 0 0.0.0.0:4200 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:58666 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:845 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:4110 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:4207 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:20880 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:4208 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:18000 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:18001 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:18002 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:42483 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:48116 0.0.0.0:* LISTEN - tcp 0 0 10.20.168.13:8022 0.0.0.0:* LISTEN - www.2cto.com 比如我們要查詢20880連接埠被那個進程佔用，netstat查詢不出來[html] [wei@vm-cbu-qa-168-13 web-deploy]$ netstat -lnp | grep 20880 (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) tcp 0 0 0.0.0.0:20880 0.0.0.0:* LISTEN - 我們用lsof來查詢下[html] [wei@vm-cbu-qa-168-13 web-deploy]$ lsof -Pnl +M -i4 | grep 20880 java 15239 710 260u IPv4 87019792 TCP 10.20.168.13:35822->10.20.172.31:20880 (ESTABLISHED) java 15239 710 285u IPv4 87038933 TCP 10.20.168.13:43058->10.20.172.93:20880 (ESTABLISHED) java 25755 712 544u IPv4 87265535 TCP *:20880 (LISTEN) java 25755 712 562u IPv4 87265755 TCP 10.20.168.13:40151->10.20.168.16:20880 (ESTABLISHED) java 25755 712 563u IPv4 87265695 TCP 10.20.168.13:59947->10.20.151.21:20880 (ESTABLISHED) java 25755 712 564u IPv4 87265696 TCP 10.20.168.13:47042->10.20.142.80:20880 (ESTABLISHED) java 25755 712 565u IPv4 87265703 TCP 10.20.168.13:40939->10.20.141.52:20880 (ESTABLISHED) java 25755 712 570u IPv4 87265751 TCP 10.20.168.13:43361->10.20.141.141:20880 (ESTABLISHED) java 25755 712 571u IPv4 87265753 TCP 10.20.168.13:40960->10.20.143.111:20880 (ESTABLISHED) java 25755 712 572u IPv4 87265752 TCP 10.20.168.13:45368->10.20.141.63:20880 (ESTABLISHED) www.2cto.com java 25755 712 573u IPv4 87265754 TCP 10.20.168.13:34315->10.20.168.17:20880 (ESTABLISHED) java 27709 713 339u IPv4 87271862 TCP 10.20.168.13:50212->10.20.172.11:20880 (ESTABLISHED) java 27709 713 341u IPv4 87271859 TCP 10.20.168.13:41128->10.20.172.88:20880 (ESTABLISHED) java 27709 713 347u IPv4 87271865 TCP 10.20.168.13:46782->10.20.172.1:20880 (ESTABLISHED) 可以看到監聽20880連接埠的是進程pid是25755，user是 712i4是查詢ipv4連接埠[html] [wei@vm-cbu-qa-168-13 web-deploy]$ lsof -Pnl +M -i4 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME portmap 1616 32 3u IPv4 3488 UDP *:111[portmapper] portmap 1616 32 4u IPv4 3489 TCP *:111[portmapper] (LISTEN) DragoonAg 4153 0 6u IPv4 28872832 TCP 10.20.168.13:54978->10.20.149.114:13888 (ESTABLISHED) DragoonAg 4153 0 8u IPv4 28872826 TCP 127.0.0.1:15777 (LISTEN) DragoonAg 4153 0 10u IPv4 28872828 TCP 127.0.0.1:15778 (LISTEN) DragoonAg 4153 0 12u IPv4 28872836 UDP 10.20.168.13:13777->10.20.149.114:60569 DragoonAg 4153 0 13u IPv4 86898035 TCP 10.20.168.13:38027->10.20.159.108:15888 (ESTABLISHED) DragoonAg 4153 0 15u IPv4 86648332 TCP 127.0.0.1:15777->127.0.0.1:41653 (ESTABLISHED) python 10488 0 4u IPv4 292127 TCP 10.20.168.13:8022 (LISTEN) java 15239 710 5u IPv4 86647757 TCP *:4208 (LISTEN) java 15239 710 15u IPv4 86647829 TCP *:35485 (LISTEN) java 15239 710 18u IPv4 86647831 TCP *:4207 (LISTEN) java 15239 710 20u IPv4 86647833 TCP *:42483 (LISTEN) java 15239 710 22u IPv4 87286934 TCP 10.20.168.13:44190->110.75.194.17:80 (CLOSE_WAIT) java 15239 710 246u IPv4 86648330 TCP 127.0.0.1:41653->127.0.0.1:15777 (ESTABLISHED) java 15239 710 253u IPv4 86648976 TCP *:4110 (LISTEN) java 15239 710 255u IPv4 87010313 TCP 10.20.168.13:4110->10.20.172.31:38036 [html] [wei@vm-cbu-qa-168-13 web-deploy]$ lsof -Pnl +M -i6 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME cfservd 5513 0 4u IPv6 17813 TCP *:5308 (LISTEN) java 13334 0 64u IPv6 85851503 TCP 10.20.168.13:46591->10.20.145.12:57126 (ESTABLISHED) java 13334 0 65u IPv6 86276005 TCP 10.20.168.13:34506->10.20.172.85:80 (CLOSE_WAIT) java 13334 0 66u IPv6 86313523 TCP 10.20.168.13:36320->10.20.172.85:80 (CLOSE_WAIT) java 13334 0 67u IPv6 86382763 TCP 10.20.168.13:52680->10.20.172.85:80 (CLOSE_WAIT) java 13334 0 71u IPv6 85851508 TCP *:58126 (LISTEN) www.2cto.com lsof命令參數解釋 1) -P :這個選項約束著網路檔案的連接埠號碼到連接埠名稱的轉換。約束轉換可以使lsof運行得更快一些。在連接埠名稱的尋找不能奏效時，這是很有用的。 2) -n : 這個選項約束著網路檔案的連接埠號碼到主機名稱的轉換。約束轉換可以使lsof的運行更快一些。在主機名稱的尋找不能奏效時，它非常有用。 3) -l :這個選項約束著使用者ID號到登入名稱的轉換。在登入名稱的尋找不正確或很慢時，這個選項就很有用。 4) +M :此選項支援本地TCP和UDP連接埠對應程式的註冊報告。 5) -i4 :僅列示IPv4協議下的連接埠。 6) -i6 : 僅列示IPv6協議下的連接埠。
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