Check port usage in linux

Check port usage in linux

1. Start a jetty server in the Fedora20 system. port 8080;

2. Run the following command:

[doctor@localhost bin]$ lsof -i:8080COMMAND   PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAMEjava    10033 doctor  180u  IPv6 253547      0t0  TCP *:webcache (LISTEN)[doctor@localhost bin]$ 

Obtain PID 10033.

3. Run the following command:

[doctor@localhost ~]$ ps aux |grep 10033doctor   10033  1.7 12.4 6044780 979184 pts/1  Sl   11:07   0:34 /home/doctor/opt/jdk1.8.0_25/bin/java -Djetty.home=/home/doctor/opt/jetty9-jenkins -Djetty.base=/home/doctor/opt/jetty9-jenkins -Djava.io.tmpdir=/tmp -jar /home/doctor/opt/jetty9-jenkins/start.jar jetty-started.xmldoctor   10874  0.0  0.0 112696  2300 pts/1    S+   11:41   0:00 grep --color=auto 10033[doctor@localhost ~]$ 

Or

[doctor@localhost ~]$ ps u 10033 |catUSER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMANDdoctor   10033  1.5 12.4 6044780 979184 pts/1  Sl   11:07   0:34 /home/doctor/opt/jdk1.8.0_25/bin/java -Djetty.home=/home/doctor/opt/jetty9-jenkins -Djetty.base=/home/doctor/opt/jetty9-jenkins -Djava.io.tmpdir=/tmp -jar /home/doctor/opt/jetty9-jenkins/start.jar jetty-started.xml[doctor@localhost ~]$ 

The cat display is mainly for line breaks, so that the information is fully displayed.