Linux: Find Out Which Process Is Listening Upon a Port

Linux: Find Out Which Process Is Listening Upon a Port

netstat - a command-line tool that displays network connections, routing tables, and a number of network interface statistics.

fuser - a command line tool to identify processes using files or sockets.

lsof - a command line tool to list open files under Linux / UNIX to report a list of all open files and the processes that opened them.

/proc/$pid/ file system - Under Linux /proc includes a directory for each running process (including kernel processes) at /proc/PID, containing information about that process, notably including the processes name that opened port.

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