Bryan O'Sullivan is an Irish writer and developer who works with distributed systems, open source software, and programming languages. He wrote the award-winning O'Reilly title Real World Haskell. He lives in San Francisco with his family.

Mercurial is the easiest system to learn when it comes to distributed revision control-ideal whether you're a lone programmer working on a small project, or part of huge team dealing with thousands of files. This definitive guide takes you step by step through ways to track, merge, and manage both open source and commercial software projects with Mercurial, using Windows, Mac OS X, Linux, Solaris, and other systems.

Mercurial permits a countless variety of development and collaboration methods, and this book offers several concrete suggestions to get you started. This guide will help you:

* Learn the basics of working with a repository, changesets, and revisions

* Merge changes from separate repositories

* Set up Mercurial to work with files on a daily basis, including which ones to track

* Get examples and tools for setting up various workflow models with Mercurial

* Manage a project that's making progress on multiple fronts at once

* Find and fix mistakes by isolating problem sources

* Use hooks to perform actions automatically in response to repository events

* Customize the output of Mercurial

Like the revision system it describes, Mercurial: The Definitive Guide maintains a strong focus on simplicity to help you learn Mercurial quickly and thoroughly.