Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects. The image featured on the cover of Practical UNIX Security is a safe. The concept of a safe has been with us for a long time. Methods for keeping valuables safely have been in use since the beginning of recorded history. The first physical structures that we think of as safes were developed by the Egyptians, Greeks and Romans. These early safes were simply wooden boxes. In the Middle Ages and Renaissance in Europe these wooden box safes started being reinforced with metal bands, and some were equipped with locks. The first of the all-metal safes was developed in France in 1820. UNIX and its attendant programs can be unruly beasts. Nutshell Handbooks(R) help you tame them.

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Edie Freedman designed this cover and the entire UNIX bestiary that appears on other Nutshell Handbooks. The images are adapted from 19th-century engravings from the Dover Pictorial Archive.

The text of this book is set in Times Roman; headings are Helvetica; examples are Courier. Text was prepared using SortQuad's sqtroff text formatter. Figures are produced with a Macintosh. Printing is done on a Tegra Varityper 5000.