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Ubuntu password is forgotten, sudoers file is broken, and other solutions

Source: Internet
Author: User
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1. Press shift to go To the grub page, and move the up and down key to the recovery mode of the second line. Press E (note that it is not press Enter), that is, ubuntu, with Linux 3.2.0-23-generic (recovery mode)


2. Change Ro recovery nomodeset to RW single init =/bin/bash and press Ctrl + X or F10 to enter the single-user mode.



Then there is the shell with the root permission. Fix the stupid mistake, including resetting the password or anything.

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