inanzzz | Find and kill a process that is using a particular port in Ubuntu

If you get an error like [Errno 98] Address already in use when trying to run a service on a specific port in Ubuntu, you can find and free it.

Run process

inanzzz@inanzzz:/api$ mkdocs serve
[I 150813 16:22:39 server:271] Serving on http://127.0.0.1:8000

[Errno 98] Address already in use

Find and kill process

inanzzz@inanzzz:/api$ sudo netstat -lpn |grep :8000
tcp   0   0   127.0.0.1:8000   0.0.0.0:*   LISTEN   5531/python

inanzzz@inanzzz:/api$ sudo kill -9 5531

Check it

inanzzz@inanzzz:/api$ sudo netstat -lpn |grep :8000
[1]+  Killed                  mkdocs serve

Find and kill process by name

If you wish to find a process by its name and kill it then you can use command below. Assume that your command is running as $ bin/auth in terminal.

inanzzz@inanzzz:/api$ ps aux | grep -i bin/auth | awk {'print $2'} | xargs kill -9