• 1800-270-9040 (IN), +91-8069248012 (International)

Check port usage in linux


If you want to see which process is using which port (in this case, port 80), you can do it with the following command:

# netstat -tulpn| grep :80

This gives the following output:

tcp        0      0 :::80                       :::*                        LISTEN      8879/httpd

As you can see, apache (httpd) is using port 80 on PID 8879.
You can also do it with other ports by replacing the number (80) by another port.