The Problem It Solves & My Contribution

Standard shells like Bash are complex "black boxes" filled with legacy code, making them unsuitable for learning internal system mechanics. Exsh solves this by providing a transparent, minimal reference implementation of a Unix command-line interpreter.

How My Additions Help:
My implementation of Global State (Variables), Pattern Matching (Globbing), and Control Logic moves Exsh from a basic process runner to a robust, programmable utility.

• Usability: Features like wildcard expansion (*.c) and environment variables ($HOME) allow users to perform real-world file management and configuration tasks that were previously impossible.
• Educational Value: By adding logical operators (&&, ||), I expose how shells handle conditional execution and exit codes. This transforms the project into a complete "sandbox" where developers can master how software manages state and flow at the system level.