.. meta::
   :description: The shell programming language
   :keywords: schulung, training, programming, bash, bourne, shell,
              bourne shell, linux, embedded, script, scripting

Shell Scripting/Bourne Again Shell (Bash)
=========================================

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   :local:

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      :align: left

      * * **Duration**
	* 3 days
      * * **Language**
	* Trainer language is English or German
      * * **Material**
	* * PDF Slides, :download:`Bash </trainings/material/pdf/100-shell-scripting.pdf>`
      * * **Related**
	* * :doc:`linux-basics`
      * * **Booking**
	* :doc:`/trainings/booking`


The Bourne Shell is not only used to communicate with the system using
the commandline that it provides. It is also a full programming
language. This course gives insight into shell programming, exchanging
the first impression - *dirty!* - with the more appropriate second
impression: *aesthetic!*.

Course Outline
--------------

* **Some history** of UNIX and the shells which grew up together
* **Hello World** and other boilerplate
* **Variables, environment variablens, and commandline arguments**
* **Control constructs**. The bigger part of the course: conditionals
  and loops
* **Functions**
* **Pipes and IO-Redirection**
* **Miscellaneous**. String manipulation ("parameter expansion" is the
  correct term) and several other obscure constructs that one might
  not be able to do without

Prerequisites
-------------

Experience with Linux, especially shell commandline usage, is
required. See :doc:`/trainings/repertoire/linux-prog/linux-basics`.