Debugging Bash Scripts (set -x, trap)

Even the best scripts can have bugs! Debugging is the process of finding and fixing these errors.

It's a crucial skill for any developer, helping you understand what your script is doing step-by-step and where things might be going wrong.

In this lesson, you'll learn powerful Bash tools to trace execution and handle unexpected events.

One of the simplest and most effective debugging tools in Bash is set -x. It enables command tracing.

• When active, Bash prints each command and its arguments to standard error (which usually means your terminal) just before executing it.
• This output includes the state of variables after expansion, giving you a clear view of what Bash is about to do.
• It's like watching your script execute in slow motion!