britone mwasaru

I was working on putting together a web server then I realised I couldn’t use port 8888 because of some reason. To solve this I had to find what was using the port

$ lsof -i:8888

COMMAND  PID USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
Python  6556 zero    7u  IPv4  0x8593e686724202a      0t0  TCP localhost:ddi-tcp-1 (LISTEN)
Python  6556 zero   10u  IPv6 0x8d6c72b61b67f0b6      0t0  TCP localhost:ddi-tcp-1 (LISTEN)

lsof will (list of open files) with the process that opened them with this syntax:

lsof -i:[port_number]

Now that I know the process id (PID) I can kill it using the syntax

kill [PID]

In this case its:

$ kill 6556