# 🗂️ Exercise Index – Linux System Programming

This is an organized list of all exercises completed so far, including a brief description and links to related resources or files.

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## 📁 mycp

**Description**: A simple file copy utility implemented in C using low-level system calls (`open`, `read`, `write`, `close`).

- 📄 [README](mycp/README.md)
- 📂 Directory: `mycp/`
- ✅ Features:
  - Error handling via `perror` and `errno`
  - Safe loop with `EINTR` handling
  - Proper resource cleanup
  - Integrated unit tests and Valgrind checks

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## 🌳 tree

**Description**: A basic reimplementation of the Unix `tree` utility that recursively lists directories and files.

- 📄 [README](tree/README.md)
- 📂 Directory: `tree/`
- ✅ Features:
  - Recursive traversal using `opendir` and `readdir`
  - Directory depth display
  - Unit tests with mocks for directory structure
  - Scripted test automation with Valgrind integration

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## 🔧 Tooling & Automation

**Shared tools and scripts used across projects**:

- `Makefile` with:
  - Targets for `build`, `test`, `valgrind`, and `clean`
- Shell script for automated tests: `run_tests.sh`
- Valgrind memory check reports generated automatically

*Last updated: 2025-06-30*