Unix-like operating systems have a primitive access control system. The root account can do anything. Other users are peasants with only minimal system access. This worked fine in UNIX's youth, but today, system administration responsibilities are spread among many people and applications. Each person needs a tiny slice of root's power.

Sudo lets you divide root's monolithic power between the people who need it, with accountability and auditability.

Sudo Mastery will teach you to:

While many people use sudo, most use only a small part of it's features. Chances are, you're doing it wrong. Master sudo with Sudo Mastery.