simple_shell/ │ ├── main.h # Header file with prototypes, macros, and global variables ├── main.c # Entry point (contains main function) ├── prompt.c # Handles shell prompt display ├── exec.c # Executes the commands (using execve) ├── builtins.c # Built-in commands (like 'exit') ├── utils.c # Helper functions (e.g., string operations) └── Makefile # Compilation instructions for easy build