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How to idenitfy a process ID using the TCP Port

October 23, 2011 at 1:57 pm 1 comment

Recently i had an issue  in one of my linux machines, where I was unable to start the acronis_agent service which listens on TCP Port ;

Later I realised  that already so many processes are listening on the TCP port.

To check the open connection for a TCP  port

# netstat -an | grep 9876   ( In my case acronis_agent uses TCP 9876)

It was showing multiple connections………….

To check the PID(Process ID ) for all the sessions  which are using the port 9876

#lsof -i TCP:9876

finally you could use  the  almighty command “kill -9 PID”  …. boom everything became normal.

Entry filed under: Linux.