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O'Reilly - Safari Books Online - 0596527764 - bash Quick Reference
Overview
In this quick reference, you'll find everything you need to know
about the bash shell. Whether you print it out or read it on the
screen, this PDF gives you the answers to the annoying questions
that always come up when you're writing shell scripts: What
characters do you need to quote? How do you get variable
substitution to do exactly what you want? How do you use arrays?
It's also helpful for interactive use. If you're a Unix user or
programmer, or if you're using bash on Windows, you'll find this
quick reference indispensable.
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