Determine the process pid listening on a certain port

Question

As the title says, I\'m running multiple game servers, and every of them has the same name but different PID and the port number. I would

Answer 1

The -p flag of netstat gives you PID of the process:

netstat -l -p

Edit: The command that is needed to get PIDs of socket users in FreeBSD is sockstat. As we worked out during the discussion with @Cyclone, the line that does the job is:

sockstat -4 -l | grep :80 | awk '{print $3}' | head -1