Chapter 12: Using Arguments and Functions
Whenever we are trying to program any kind of application or a script in any programming language, we should always try to make our code modular and easily maintainable. The thing that is going to help us a lot in this aspect of creating scripts is a concept known as a function.
We will cover the following recipes in this chapter:
- Using custom functions in shell script code
- Passing arguments to a function
- Local and global variables
- Working with returns from a function
- Loading an external function to a shell script
- Implementing commonly used procedures via functions
Technical requirements
For these recipes, we're going to use a Linux machine. We can use any virtual machine (VM) from our previous ...
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