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How to find PID of a process which is running on a specific port
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How to find PID of a process which is running on a specific port

16 years ago

As a system admin, there are scenarios where you might need to find PID of a process which is running on a specific port. In JBoss administration this comes very handy as as we need to deal with hell lot of port numbers.

In this case, consider jboss is not started up due to the error , Port already in use 51314

You need to find the PID of the process which used the port 51314 and kill so that Jboss can have a clean start.

lsof is a command which help you here, with option -i and hostname:port.

lsof -i @jbsuat45:51315

Here jbsuat45 is the hostname and port is 51314

Now we get the PID and you can Kill it using Kill -9 command.

PS:

You can also find the process which are running by

netstat -ia | grep 51314

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Girish G
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A highly accomplished and strategic Senior IT Leader with over 20 + years of experience in the demanding investment banking sector. I specialize in leading and transforming complex enterprise technology functions, with a core focus on Enterprise Data Management and IT Security. In my senior management capacity, I direct technical teams across critical platforms, including Big Data, Enterprise Reporting, ETL tools, and comprehensive IT Security & Access Management initiatives. My expertise spans the complete lifecycle of technology infrastructure—from fundamental access management and reporting to sophisticated Big Data and ETL integration. I am dedicated to driving technological excellence, securing corporate assets, and leveraging data to achieve superior business outcomes. Personal Note: Outside of executive responsibilities, I find rejuvenation in the art of cooking and the exploration that comes with traveling.

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