Enable Passwordless Sudo For A Specific User in Linux

Just add a file (any filename would work but I personally just named it with the username) with the line

yourusername ALL=(ALL) NOPASSWD: ALL

to /etc/sudoers.d/

This works because in /etc/sudoers there is a line

#includedir /etc/sudoers.d

That will include whatever you throw in the directory.

Tested in Ubuntu 20.04.

Reference: https://timonweb.com/devops/how-to-enable-passwordless-sudo-for-a-specific-user-in-linux/