Find and Kill a Process that is Using a Particular Port in Ubuntu

STOP TOMCAT SERVER USING TERMINAL

1- Find what application/process is using :

sudo netstat -lpn |grep :8080

and press Enter.

You will get an output similar to this one

tcp6       0      0 :::8080                 :::*                    LISTEN      6782/java

2- I have got the process Id, which is 6782, now this is the process that is using port 8080.

3- Kill the process, type:kill 6782

kill -9 6782

and now port 8080 is free.