Mac OS X for Unix Geeks (Leopard)

This skinny volume neither aims to teach its readers UNIX nor introduce them to the Mac, but rather to show how Apple has implemented UNIX. It's a fast read that assumes--as the title implies--rather a lot of UNIX knowledge. With that requirement satisfied and this book in hand, you're likely to discover aspects of Aqua more quickly than you otherwise would have.

The authors spend lots of time explaining how administrative tasks--such as managing groups, users, and passwords--are handled in the Mac OS environment. They document netinfo fully, and call attention to its limitations (like its inability to create home directories for users) by explaining how to do the job on the command line. They also cover C programming in the Darwin universe at greater length than any other book does, providing explicit instructions for such important tasks as creating header files and linking static libraries. A guide to the command line (they call the reference section--groan--"The Missing Manpages") provides good value at this book's conclusion. --David Wall

Topics covered: How to get around in Darwin, the UNIX implementation built into Mac OS X. Sections deal with basic maneuvering at the command line, LDAP services, C programming, and graphical user interfaces under Aqua. There's a short section on building the kernel itself, but it's limited in scope.

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