system-programming/exercises/README.md

🗂️ 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
• 📂 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
• 📂 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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🐚 run_scripts

Description: A simple C program that sequentially executes one or more bash scripts, printing each script’s exit status.

• 📄 README
• 📂 Directory: run_scripts/
• ✅ Features:
  • Uses fork() and execlp() to run each script in a child process
  • Waits for each child to finish before executing the next
  • Reports normal exit code or termination by signal
  • Includes example test scripts and memory checks with Valgrind
  • Makefile with targets: build, run, test, valgrind, and clean

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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: 2025-07-09