Note, this is not something I recommend doing. In fact, the only reason why I’m documenting it is that I am removing this solution from the last box I used to have it on.
Anyway, edit the /etc/sudoers file (with visudo, as root), then add lines under the default one for root, like this:
# User privilege specification root ALL=(ALL) ALL bolt ALL=(ALL) ALL bolt ALL=NOPASSWD: ALL
(replace “bolt” with your own username)
If you would rather want to not type a password only for specific commands, specify them like this:
bolt ALL=NOPASSWD: /sbin/shutdown, /bin/mount, /bin/umount
(replacing the username and commands with the ones you want)