Linux/Unix - how to enable one user to `sudo` without a password

Question

How can a user be setup to sudo (or su -) without entering a password?

Answer 1

You control sudo through the "sudoers" file. To edit this file, run "sudo visudo".

I haven't tested this, but I think the following would allow all users in the "cdrom" group to run "sudo k3b" without needing a password: Code:

%cdrom ALL = NOPASSWD: /usr/bin/k3b

Source: http://ubuntuforums.org/showthread.php?t=19236