exit codes

Writing robust Bash scripts often involves more than just stringing shell commands together. Error handling is a crucial component of creating reliable and stable scripts that can gracefully handle unforeseen issues without crashing or producing incorrect results. Unfortunately, error handling in Bash does not come with the same built-in conveniences as in many high-level programming languages. However, with some careful planning and a few relatively simple techniques, you can safeguard your Bash scripts to handle unexpected situations effectively. The foundation of error handling in Bash (or any shell scripting environment) is the exit status of commands.