Learn Linux Shell Scripting - Fundamentals of Bash 4.4

Error prevention

At this point, you should have a firm grasp on how we can handle (user input) error. Obviously, context is everything here: depending on the situation, some errors are handled in different ways. There is one more important subject in this chapter, and that is error prevention. While knowing how to handle errors is one thing, it would be even better if we can prevent errors during script execution altogether.