Finding the process that is using a certain port in Linux

"You have a couple of options:

lsof -i tcp:80

will give you the list of processes using tcp port 80.

Alternatively,

sudo netstat -nlp

will give you all open network connections."

"I am using ""CentOS 7 minimal"" which has nor netstat neither lsof. But a lot of linux distributions have the socket statistics command (i.e. ss).

Here is an example of execution:

# ss -tanp | grep 6379
LISTEN 0 128 127.0.0.1:6379 *:* users:((""redis-server"",pid=2531,fd=4))"