Metacodex Publishing

IT looks like magic from the outside. Wizards study esoteric tomes and learn exact incantations to open doors, seal them, find hidden knowledge and repel invaders — and so does anyone who learns the command line.

The Wizard's Reference series takes that idea seriously enough to be useful. Each book is a collection of short, self-contained recipes: one idea at a time, in plain language, with something you can try right now — including the parts other guides skip, like where your commands actually run and how to tell where you are.

The practice shell and the Command Codex are free for everyone. The printed editions on Amazon are for people who want the whole thing bound, offline, and within arm's reach of the keyboard — and buying one keeps this site free for everyone else.