ps get port number ubuntu 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: linux check what process is using port
$ netstat -ltnp | grep -w ':80'$ sudo netstat -nlp | grep :80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 125004/nginx$ netstat -ltnp | grep -w ':80'