* Allows users to send cmd commands to connected clients.
* import os.
* import socket.
* import threading.
* import subprocess.
* from queue import Queue.
* Run the server and client file on separate computers.
* On server side:
- Type connections to list all connected clients.
- Type connect + index number of client to connect.
* Once connected send cmd commands like dir, mkdir, etc.
* Type exit to disconnect from the client.