Linux Bash Shell Programming training course

Who should attend

System / Network administrators and support people, programmers and prospective Linux power users, looking to harness the power of task automation through shell scripting.

Prerequisites

Attendance of our Introduction to Linux training or equivalent experience (especially with vim).

On site

Tab text

Syllabus

Introduction to bash

Refresher of the basics

• The command structure
• Here documents
• Job Control

The bash Environment

• Environment Variables
• Using Command History
• Bash Variables

Creating and executing bash scripts

• Debugging bash scripts

Processing command-line parameters

• Standard command line flags and options

Commenting your scripts

• When and why you should

Statements

• The read statement
• Conditional statements (if, case and select)
• The test, [ ... ] and commands
• The let and (( … )) command
• The exit, break and continue statements

Operators

• Testing strings and numbers
• The declare command
• Creating loops (for, while and until)

Arrays

• Declare simple bash array
• Handling arrays

Options and Arguments

• The getopts command

Functions

• When and how to use a Function

Using the “trap” command

• Cleaning up