“Unix Shells by Example truly fulfills the claim made in the
title: over 630 examples are in the book, plus another 60 in the
first appendix. If you want to learn shell programming, this book
is a must-have.”
“The first chapter introduces the three major shells: the Bourne
shell, the C shell and the Korn shell… Chapter Two,… gives a
very useful explanation of regular expressions… Our friend grep
appears in the third chapter–the meaning behind the name, how it
works, and how to use it… Chapter Four covers sed, the
Streamlined Editor–again, replete with examples.”
“The next three chapters describe awk–the history, the input
format, records and fields, patterns and actions, script files,
comparison expressions, variables, pipes, loops and arrays, to name
just a few topics. This section is quite extensive and very
useful…”