Command Prompt Tricks

1]Watch the Star Wars movie

Telnet is turned off by default in the latest versions of 
Windows. So, in order to watch star wars, you must
 first enable telnet by going to Control Panel › 
Programs › Turn Windows Feature On or Off and 
ticking both the telnet check boxes. After doing that, 

follow the steps 

1. Go to Start, Search in Windows Vista and Windows 7.On Windows 8 and Windows 8.1, open the main Start page.
2. Type telnet and press Enter.
3. In the following command prompt window, type "o" without quotes and press Enter.
4. Now type "towel.blinkenlights.nl" without the quotes and press Enter.

If you do not need telnet anymore, you can turn it off.

2] Know your IP address and DNS Server's 
address 
Command Prompt can even let you know your IP 
address. Just type ipconfig/ all in the command 
prompt and press Enter. Along with your IP address 
and DNS servers, command prompt will also return a
 ton of information like your host name, primary DNS 
suffix, node type, whether IP Routing ,Wins Proxy, 
and DHCP are enabled, your network adapter's 
description, your physical (MAC) address etc . 

3]Know if Someone stealing your WiFi connection

1) Open your browser and visit http://192.168.1.1 or http://192.168.0.1 depending on your router. 
2) Find the tab that mentions “Attached Devices” or something similar.
3) Find the computer name, IP address and MAC Address (sometimes called Physical Address or Hardware Address) of your computer using the previous trick.
4 )Compare it with those displayed by your router in Step 2. If you notice some strange devices, then your neighbour has been sneaking in on your internet connection and it is best to add a password.

There Some more Tricks with command prompt.I will Post them later.

Enjoy:)