The bash shell is a complete programming language, not merely a
glue to combine external Linux commands. By taking full advantage
of shell internals, shell programs can perform as snappily as
utilities written in C or other compiled languages. And you will
see how, without assuming Unix lore, you can write professional
bash 4.0 programs through standard programming techniques.Complete
bash coverage Teaches bash as a programming language Helps you
master bash 4.0 features What you'll learn Use the shell to write
new utilities and accomplish most programming tasks. Use shell
parameter expansion to replace many external commands, making
scripts very fast. Learn to avoid many common mistakes that cause
scripts to fail. Learn how bash's readline and history libraries
can save typing when getting user input. Learn to use features new
to bash 4.0. Build shell scripts that get information from the Web.
Who this book is for
Beginning Linux and Unix system administrators who want to be in
full command of their systems.
Table of Contents Hello, World Your First Shell Program Input,
Output, and Throughput Looping and Branching Command-Line Parsing
and Expansion Parameters and Variables Shell Functions String
Manipulation File Operations and Commands Reserved Words and
Builtin Commands Writing Bug-Free Scripts and Debugging the Rest
Programming for the Command Line Runtime Configuration Data
Processing Scripting the Screen Entry-Level Programming
General
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