Sudo powers without password

Wait! What?

Yes, there is a way for a user that is not even in sudo groups to run some sudo commands without password.

Imagine that for an obscure reason you need a specific user to run some of the systemctl commands for a couple of services even though those services are running under this user.

You can check the user running the process with ps aux |grep myservice.

If you run for example:

systemctl restart myservice.service

It will ask to enter authentication and you cannot use

sudo systemctl restart myservice.service

Because “myuser” is not under sudo group.

For this case I am explaining here the solution I found in https://serverfault.com/a/1057473/517391

Edit the file /etc/sudoers or create a new file /etc/sudoers.d/mynewfile.

For both options create an entry like this one but adjust to your necessities:

Cmnd_Alias USER_SERVICES = /usr/bin/systemctl restart myservice1.service,/usr/bin/systemctl restart myservice2.service

myuser ALL=(ALL) NOPASSWD:USER_SERVICES

Save and close.

Then sudo or su to your user “myuser” and try to restart your services using sudo now.

Magic will happen!