[FIXED] How to Change Ubuntu/Lubuntu's Root password using "sudo command"

After installing Ubuntu/LUbuntu ,we could able to login through a user ,we didn't have the root privillage at that time.

If you want to gain the root privilege we have to know the Root password , but we haven't 

Just do the below commands to gain root privilege ,

1) open  terminal/console.

2) type the command ,

$ sudo su

you want to enter your password, type your password.

stebu@DareLegacy:~$ sudo su

[sudo] password for stebu: 

3)Change the root password by,

# passwd

 root@DareLegacy:/home/stebu# passwd 

Enter new UNIX password: 

Retype new UNIX password: 

passwd: password updated successfully

root@DareLegacy:/home/stebu# 

Type your New password.

That's it. Now you can run as root. :-)