Issue with nc -lk 9999 command



I am using the Itversity labs. I am facing issue with the command ‘nc -lk 9999’.
The error thrown is as below:
Ncat: bind to Address already in use. QUITTING.

Could anyone please guide me how to kill the process and run it again.



This is not lab issue. You need to use different port. You should not just copy what I have demonstrated in the videos, as others also might be using same port.