This is a great fun to chat in same network by making a simple  MS DOS code without any software.

It is easy and simple trick.  We can chat using MS-DOS(we have did this as college experiment in network lab with java code).  But i am not going to give you the java code.  Our usual Batch Programming.

You can try this in your school or college systems(it should be networked systems).

follow these simple steps:-

Step 1: 
 Get  the ip address of your friend’s system. or you can simply connect two computer through wifi or LAN cable.
if you are using college or school system,then ip address will be in particular range.
Step 2:
copy the following Batch code in notepad:

@echo off
echo TypeIPAddress
set /p n=IPAddress:
set /p m=Message:
net send %n% %m%
Goto A

Save the file with .bat extension(For Eg: message.bat)
Step 3:
Open command prompt and navigate to that batch file location.
open the file in notepad.

If you don’t know how to move to that path,simply drog and drop in cmd.Then hit enter.

Step 4:
Now it will ask you for the IP Address.
Enter the IP address which you want to send message.
Hit enter
Now it will ask you for the message.
Enter and hit enter

The user with whom you connecting system’s cmd should be opened in order to receive.