How do I disable root password reset via GRUB edit?
103411
How can I prevent someone from resetting my password with a Live CD?
94379
how to disable SSH login with password for some users?
157253
How do I allow non-root access to /ttyUSB0?
53804
How can I prevent Windows from overwriting GRUB when using a dual-boot machine
34336
How do I reset the Windows XP Administrator password?
45329
Why does Ubuntu have a disabled root account?
99370
Why does Ubuntu force users to create a password upon installation?
151346
How to discard saved password for samba share in unity?
9568
How to reset Kali linux root password
142930
What is the default password for Ubuntu 12.04?
82978
Why can `root` run any command as any user without providing password?
39220
Why shouldn't root be allowed to login via ssh?
59329
Unable to login after password change, having home directory encrypted
20144
Prevent GRUB from showing up by default?
78197
How to set user passwords using passwd without a prompt?
136991
How to pass the password to su/sudo/ssh without overriding the TTY?
28784
How can I lock down ubuntu?