Poweroff Ubuntu without sudo, without password, over SSH
123160
`sudo reboot` vs `reboot` - what is the difference?
45404
Can I ssh somewhere, run some commands, and then leave myself a prompt?
136991
How to pass the password to su/sudo/ssh without overriding the TTY?
44231
Remove sudo privileges from a user (without deleting the user)
82978
Why can `root` run any command as any user without providing password?
107586
How does the power button shut the computer down without root permission?
12692
How can I set up password-less SSH login?
17012
Execute remote commands, completely detaching from the ssh connection
145270
Automated ssh login with passphrase?
58430
Run script with arguments as sudo without being asked for password
18871
How often is the password asked for sudo commands? Where can I set it up?
120000
Disable password access through SSH?
123461
enable access via ssh-key without using ~/ssh/authorized_keys
97481
How do I disable remote SSH login as root from a server?
15218
Remove sudo password when connecting to *new* WiFi network
130015
How do I shut down or reboot from a terminal?
78337
how to restrict users not to login to root by using sudo -i and sudo su - and other if exists