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The animal on the cover of Learning the Unix Operating System is a horned owl. The horned owl is the most powerful of North American owls, measuring from 18 to 25 inches long. This nocturnal bird of prey feeds exclusively on animals—primarily rabbits, rodents, and birds, including other owls. It locates these animals by sound rather than sight, since its night vision is little better than ours. To aid its hunting, an owl has very soft feathers that muffle the sound of its motion, making it virtually silent in flight. A tree-dwelling bird, it generally chooses to inhabit the old nests of other large birds such as. | Colophon.27089 Page 1 Friday January 4 2002 4 47 PM About the Author Jerry Peek has used Unix since the early 1980s. He has consulted on Unix and VMS developed and taught Unix courses been a staff writer for O Reilly Associates Inc. and worked as a programmer and system administrator. Grace Todino Gonguet is now a professional expatriate having lived in Oman Gabon and Holland for the last 10 years. She currently resides in Sarawak Malaysia with her geophysicist husband Christophe and their children Gabriel Raphael and Lucie. Grace was one of the original authors of the Nutshell Handbooks Managing UUCP and Usenet and Using UUCP and Usenet. She now writes and edits travel articles for local publications. John Strang is an Assistant Professor of Diagnostic Radiology at the University of Rochester Rochester NY. His research interests are in CAT scan and MRI of the body as well as in computerization of radiologic images. He received his education at MIT BS and MS Northwestern Medical School MD and UCLA and Stanford post-graduate medical training . Colophon 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 animal on the cover of Learning the Unix Operating System is a horned owl. The horned owl is the most powerful of North American owls measuring from 18 to 25 inches long. This nocturnal bird of prey feeds exclusively on animals primarily rabbits rodents and birds including other owls. It locates these animals by sound rather than sight since its night vision is little better than ours. To aid its hunting an owl has very soft feathers that muffle the sound of its motion making it virtually silent in flight. A tree-dwelling bird it generally chooses to inhabit the old nests of other large birds such as hawks and crows rather than build its own nest. Mary Brady was the .