重設Linux密碼

Reset Password in GRUB bootloader (CentOS)

1. Select the kernel
2. Press "e" key to edit the entry
3. Select the line starting with the word "kernel"
4. Press "e" key to edit kernel entry
5. Append the letter "s" (or "Single") to the end of the line
6. Press "ENTER" key
7. Press the "b" key to boot the Linux kernel into single user mode
8. type "passwd" with user name to change password
9. type "sync"
10. type "reboot"