Run visudo and add %users ALL=(ALL) NOPASSWD: /sbin/poweroff, /sbin/reboot
So you can run sudo poweroff or sudo reboot without enter the user password.
Shutdown without sudo user password in ubuntu
Run visudo and add %users ALL=(ALL) NOPASSWD: /sbin/poweroff, /sbin/reboot
So you can run sudo poweroff or sudo reboot without enter the user password.