Linux – Which Application Is Using Port 8080

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Always, Java developers need to know which application is using the high demand 8080 port. In this tutorial, we will show you two ways to find out which application is using port 8080 on Linux.

1. lsof + ps command

1.1 Bring up the terminal, type lsof -i :8080

$ lsof -i :8080 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME java 10165 mkyong 52u IPv6 191544 0t0 TCP *:http-alt (LISTEN) Note If multiple result, try lsof -i :8080 | grep LISTEN

1.2 PID 10165 is using port 8080, type ps -ef | grep 10165 to find out the application details.

$ ps -ef | grep 10165 mkyong 10165 4364 1 11:58 ? 00:00:20 /opt/jdk/jdk1.8.0_66/jre/bin/java //... -Djava.endorsed.dirs=/home/mkyong/software/apache-tomcat-8.0.30/endorsed -classpath /home/mkyong/software/apache-tomcat-8.0.30/bin/bootstrap.jar: /home/mkyong/software/apache-tomcat-8.0.30/bin/tomcat-juli.jar -Dcatalina.base=/home/mkyong/.IntelliJIdea15/system/tomcat/Unnamed_hc_2 -Dcatalina.home=/home/mkyong/software/apache-tomcat-8.0.30 -Djava.io.tmpdir=/home/mkyong/software/apache-tomcat-8.0.30 /temp org.apache.catalina.startup.Bootstrap start

Answer : IntelliJ IDEA + Tomcat 8 is using the port 8080.

2. netstat + ps command

Just different command to do the same thing.Type netstat -nlp | grep 8080 to get the PID and ps it.

$ netstat -nlp | grep 8080 (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) tcp6 0 0 :::8080 :::* LISTEN 10165/java $ ps -ef | grep 10165 mkyong 10165 4364 1 11:58 ? 00:00:20 /opt/jdk/jdk1.8.0_66/jre/bin/java //...

References

1. Wikipedia : Lsof command
2. Wikipedia : ps command
3. Wikipedia : netstat command
4. Mac OSX – What program is using port 8080

mkyong

Founder of Mkyong.com, passionate Java and open-source technologies. If you enjoy my tutorials, consider making a donation to these charities.

Label Name* Email* Label Name* Email* 5 Comments Most Voted Newest Oldest Inline Feedbacks View all comments charlie arehart 4 years ago

Cool tip. But readers should note that if they use either of these to find ports that are in use by a process you did not start yourself, you won’t see them (with lsof at all, or not completely with netstat), so use sudo, etc to elevate your privs. Worked for me. Thanks, mkyong.

3 Reply Sameer 2 years ago

Very Very Useful

0 Reply Abdullah Khawer 3 years ago

Very useful. Thanks a lot. It helped me. 🙂

0 Reply younes 5 years ago

good thanks

0 Reply Alex 6 years ago

I have a java process running in 8080, and I cant kill it becuse it automatically restarts. Do you have any idea of the origin of this process, how to trace it back? Kill it? It is running from start up, so its not something I have programmed. Thanks and good post 🙂

0 Reply

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