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 the new bash 4.0 features.
* Build shell scripts that get information from the Web.