Running reboot from a terminal does not require a password, how can I require one?
111511
How to make /sbin/shutdown, /sbin/reboot etc. require sudo again in 16.04?
146129
How do I auto-login as root into the TTY upon boot?
132149
How do I run terminal in sudo mode?
101530
How do I set up SSH so I don't have to type my password?
146607
Open a terminal from a Crontab
14551
How do I remove Ubuntu's password requirement?
4890
Run an executable as different user in linux without knowing the password
88156
Can I set my user account to have no password?
73337
Yosemite - Require password after sleep is disabled
12692
How can I set up password-less SSH login?
47010
How can update-manager update without the root password?
105082
How do I boot into a root shell?
20385
How to run a command at login?
85784
How can I set up a password for the 'rm' command?
126566
How to automate SSH login with password?
145864
How do I get Ubuntu to ask me for a password at login again?
113620
After logging in on terminal with user name and password, how do I start the GUI?