abs-guide - 10-4 main

An in-depth exploration of the art of shell scripting.
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This tutorial assumes no previous knowledge of scripting or
programming, but progresses rapidly toward an intermediate/advanced
level of instruction ... all the while sneaking in little snippets
of UNIX(R) wisdom and lore. It serves as a textbook, a manual for
self-study, and a reference and source of knowledge on shell
scripting techniques. The exercises and heavily-commented examples
invite active reader participation, under the premise that the only
way to really learn scripting is to write scripts.
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This book is suitable for classroom use as a general introduction to
programming concepts.