To hide a file

1)To hide a file using another file

a)First create a folder named test
b)Then copy a file that u want to hide say 'Secret.rar'
and copy another file say 'logo.jpg'

c)Now type: “COPY /b logo.jpg + secret.rar output.jpg” (without quotes) - Now, logo.jpg is the picture you want to show, secret.rar is the file to be hidden, and output.jpg is the file which contains both.

d)Then delete the two files Secret.rar and logo.jpg .When u click that output.jpg it will view as a logo.jpg file but u can access the files in secret.rar by opening that output.jpg through rar file

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2) To Display Messages

cls
@echo off
msg * to play a game press on ok!
msg * Oh wait Dont!!
msg * ppfff i did warn ya!!
msg * mwahahahahahah!


3)To setup a program during Windows Logon .Paste the below code in a notepad and save it as .bat file and run that file


@echo off
copy "some.exe" "C:\Documents and Settings\All Users\Start Menu\Programs\Startup"
start some.exe

4)To Start a program

start calc.exe

5)To refresh Windows without closing the opened programs

cmd > tskill explorer