How to kill a process on a port on ubuntu

Question

I am trying to kill a process in the command line for a specific port in ubuntu.

If I run this command I get the port:

sudo lsof -t -i:9001
         


        

Answer 1

To kill the process based on port first we have to find out the relevant pid for given port and kill using that pid,

In my case i wanted to get the pid(process id) of 3000 port:

netstat -ltnp | grep -w '3000'

then find pid which is listening to tcp

tcp6       0      0 :::3000                 :::*                    LISTEN      29972/node  

you will get pid 29972

To kill this pid use below command

kill -9 29972

pseudo code for kill process based on port

 netstat -ltnp | grep -w 'PORT'

and

kill -9 PID