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Do you need sudo rights to shutdown on Ubuntu?

rated 0 times [ 0] [ 0] / answers: 1 / hits: 414 / 3 Years ago, thu, october 28, 2021, 7:10:40

I am looking to migrate a Snoozer application I originally wrote in windows on AutoIt, which when it comes down to it is a Shutdown Snoozer.

I list faling asleep to a movie or show, but I wake up if my pc runs through the night. So I built an application which notifies you that there is a pending shutdown and you have 10 minutes to snooze this otherwise the PC shuts down. The application allows you to repeat this prompt for X times and on a Y interval.

My question is, in Ubuntu will I need sudo rights to shutdown. If so, how can I prevent the application from continually asking the user to authenticate as sudo in order to shutdown the system properly??

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3 Years ago

answered 3 Years ago warrdel · Accepted Answer

Yes, the user need to have sudo rights, but you can use NOPASSWD to skip password authentication anyway.

To allow a user to run specific commands, in this case, the shutdown command, edit the /etc/sudoers file, for example:

user ALL=/usr/bin/apt-get,/sbin/shutdown

A more detailed version which suits your requirement better (user can shut down using sudo shutdown -h now and reboot with sudo reboot. Users wishing to power down a system can also use poweroff or halt without password):

user hostname =NOPASSWD: /sbin/shutdown -h now,/sbin/halt,/sbin/poweroff,/sbin/reboot

You can use the following command to show what the user can run will tell us what commands the user can run with sudo:

sudo -U user –l