Chapter 1. Getting Started with Shell Scripting

This chapter is a brief introduction to shell scripting. It will assume the reader is mostly familiar with script basics and will serve as a refresher.

The topics covered in this chapter are as follows:

• The general format of a script.
• How to make a file executable.
• Creating a good Usage message and handling return codes.
• Show how to pass parameters from the command line.
• Show how to validate parameters by using conditional statements.
• Explain how to determine the attributes of files.