how to check port process code example
Example 1: linux query port use by pid
$ sudo netstat -nlp | grep :80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 125004/nginxExample 2: process runninng on particular port
sudo ss -lptn 'sport = :80'$ sudo netstat -nlp | grep :80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 125004/nginxsudo ss -lptn 'sport = :80'