Linux Password forgotten

Article Title: Linux Password forgotten. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. I. lilo (this has not been tested in person)
1. When lilo appears: Enter linux single
Lilo: linux single
2. Press enter to directly access the linux Command Line
3. # vi/etc/shadow
Delete the contents of the first line, that is, the content before "root" and "Next", in the line starting with "root,
The first line is similar
Root ::......
Save
4. # restart reboot. the root password is blank.

Ii. grub
1. When the grub screen appears, use the up/down key to select the item that you usually start linux, and then press the e key.


2. Select the one that usually starts linux and press the e key.


3. Modify the command line and add single

Change Kernel/vmlinuz-2.6.9-42.ELsmpSingleRo root = LABEL =/

4. Press enter to return, and then press the B key to start, you can directly enter the linux Command Line




5. vi/etc/shadow
Clear root Password

Changed:
Root: 14556: 0: 99999: 7 :::

6. reboot: the root password is cleared.