Sometimes some people forget their root password on their Linux machine. And not recommended to install back the Linux since so many configuration have done during that period time. Now, we can retrieve the password as long as we have physical access to the Linux machine. There are 2 ways to solve this problem.
1st way
Reboot [...]

Popularity: 27% [?]

Ubuntu is one of the few Linux distributions out there that will not enable the root account. If you want to do something with root permission on the console you have to type sudo before the command.
sudo” means superuser do. “sudo” will prompt for “Password:”. Please specify user password
As you have noticed during the Ubuntu [...]

Popularity: 3% [?]