How to Crack/Hack Password Of Linux Operating System

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today i am posting a tutorial on hacking/cracking Linux Operating System Password...
lets Begins..

So If you have ever stuck on the Login screen of Linux system, as you don’t know the System password, then don’t worry now.
Its very easy to crack the password in Linux system.

For Hacking/Cracking window7 password You can See My this Post
Hack Win 7 Password

All it takes is adjusting the boot parameters slightly and typing a command or two. Just follow the below given commands, and the work would be done.

Steps For Hacking/Cracking Linux Password :

1)Reboot your computer, and then as soon as you see the GRUB Loading screen, make sure to hit the ESC key so that you can get to the menu.

2)Now you have two options:

Root Shell Method

If you have the option, you can choose the “recovery mode” item on the menu, usually found right below your default kernel option.

Then choose “Drop to root shell prompt” from this menu (This is called the Single User Mode).
This should give you a root shell prompt.

Alternate Root Shell Method

If you don’t have the recovery mode option, this is the alternate way to manually edit the grub options to allow for a root shell.

First you’ll have to make sure to choose the regular boot kernel that you use (typically just the default one), and then use the “e” key to choose to edit that boot option.

Now just hit the down arrow key over to the “kernel” option, and then use the “e” key to switch to edit mode for the kernel option.

Now in the next screen that you see, you have to remove the “ro quiet splash” part with the backspace key, and then add this onto the end:
rw init=/bin/bash

(On some versions of Linux, you might have other shells as the default shell.
So you have to type the above line accordingly. But most Linux versions have the “bash” shell as the default shell.)

Once you hit enter after adjusting the kernel line, you’ll need to use the B key to choose to boot with that option.

At this point the system should boot up very quickly to a command prompt.
You are now at the Root Shell Prompt (also called the Single User Mode)

Now Reset the Password

1)Once you are the Root Shell Prompt, by following any of the above given method, you can use following command to reset the password of any user account:
passwd username

2)After the command is successful, type the following command to make sure the changes are written to the hard disk, before you reboot the computer:
sync

3)Now reboot the computer using the command:
reboot -f

Once the computer restarts, you shall be able to login from the account, for which you had changed the password.

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Stay Tuned I will post how to hack/Crack Mac Os X Password on my next post :)