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Run sudo commands without passwords

For specific commands

Open up visudo and add

username ALL=(ALL) NOPASSWD:/sbin/reboot, /sbin/shutdown

Here we added reboot and shutdown to the list of commands where you don't need a password to run. You do still need to type sudo reboot.

For all commands

username ALL=(ALL) NOPASSWD:ALL

Open visudo with specific editor

sudo EDITOR=vim visudo

Note

The visudo command will overwrite rules if it applies to the same user/group. For example if you have a line that allows users in the group wheel to run sudo commands and you have an user in that group where you want to run commands with sudo without passwords. Add the user after the group.

%group ALL=(ALL) ALL
username ALL=(ALL) NOPASSWD: /sbin/reboot

Here the user in group can run all sudo commands with password and run reboot without password.

See also: https://www.digitalocean.com/community/tutorials/how-to-edit-the-sudoers-file https://linuxize.com/post/how-to-run-sudo-command-without-password/