I’ve recently started building an RHCSA-style lab simulator using Bash. The goal of this project is to create a structured environment where Linux administration and troubleshooting skills can be practiced in realistic scenarios.

While Python or Go would likely be more appropriate for a project like this, I intentionally chose Bash as a way to deepen my understanding of Linux internals, shell scripting, and system behavior under real operational conditions.

I’m not currently pursuing the RHCSA certification due to budget constraints, but I am actively focused on improving my Linux administration and automation skills through hands-on practice.

How It Works

The simulator is built as a collection of modular Bash scripts that validate system state after a user completes specific administrative or troubleshooting tasks.

Each lab scenario launches a tmux session with a split view: the top pane provides instructions, while the bottom pane gives the user a working shell to complete the tasks.

Once the user finishes, they trigger a grading function that exits the session and runs validation checks against the system state. Results are then compiled into a structured score report.

Lesson Learned

One of the key takeaways from this project is that effective system administration tools do not need to be complex — they need to be predictable, modular, and focused on verifying system state.

Working in Bash reinforces a deeper understanding of Linux behavior, process management, and how real troubleshooting workflows are structured in production environments.