🖥️ Operating System Simulator

The Operating System Simulator 🧠 is a terminal-based simulation of an OS, developed for the Operating Systems Lab course. It implements core concepts like multitasking, process scheduling, resource management, and user/kernel modes. Interact with tasks like Notepad, Calculator, and Minigames—with optional graphical support 🖼️.

✨ Features

• 🛠️ Custom OS Branding: Displays the OS name with a loading animation on boot.
• 💻 User-Defined Hardware: Specify RAM, HDD, and CPU cores at startup.
• 🧵 Multitasking: Supports multilevel queue scheduling for concurrent tasks.
• 📋 Task Management: 15+ tasks, each with minimize/close options.
• 📦 Resource Management: Allocates RAM & HDD, terminates if insufficient.
• 🔐 Kernel/User Modes: Kernel handles low-level process & hardware operations.
• 🚨 Interrupt Handling: Pause/minimize tasks via simulated interrupts.
• 🧩 Scheduling: Uses semaphores, mutual exclusion, and condition variables.
• 💾 Data Storage: Simulated hard drive stores app data.

📋 Requirements

• 🐧 Supported OS: Linux — preferably Ubuntu for smoother experience
• 🧑‍💻 Programming Language: [C++]
• 📦 Dependencies:
  • [GCC, GCC libraries, SDL, xterm terminal]
• 🧰 Hardware:
  • 4GB RAM
  • 1GB free disk space
• 🔧 Tools: Git , VSCode

📥 Installation

1. 📂 Clone the Repository:

   git clone https://github.com/fatima-Sami55/OS_Simulator.git
   cd OS_Simulator
   

2. 📦 Install Dependencies:

   • For C/C++:

     sudo apt-get install build-essential
     

   • For Python:

     pip install -r requirements.txt
     

3. ⚙️ Compile (if needed):

   make
   

▶️ Usage

1. 🚀 Run the Simulator:

   ./os_simulator
   

   Or for Python:

   python main.py
   

2. 🧠 Boot Process:

   • See OS branding + loading animation.
   • Input hardware specs (RAM, HDD, cores).

3. 🎮 Interact:

   • View the task guide.
   • Select tasks via number or icon.
   • Close, minimize, or switch tasks freely.
   • Use kernel mode for admin operations.

4. 🔌Shutdown:

   • Select shutdown to terminate all tasks and exit safely.

📑 Available Tasks

Each task runs as an individual process:

1. 🧮 Calculator: Basic arithmetic operations.
2. 📝 Notepad: Auto-save text editor.
3. ⏰ Clock: Auto-updating clock.
4. 📆 Calendar: Viewable calendar.
5. 📄 Create File: Make files on disk.
6. 🗑️ Delete File: Remove selected files.
7. 📁 Move File: Change file locations.
8. 📑 Copy File: Duplicate files.
9. 🔍 File Info: Display file metadata.
10. 📋 Task Manager: Monitor and manage processes.
11. 🎵 Music Player: Play system beeps as music.
12. 🎮 Minigame: Number Guessing: Fun CLI-based game.
13. 🖨️ Print File: Simulate background printing.
14. 📖 Instruction Guide: Step-by-step guide to using the system.
15. 🎲 Dice Roller: Random number generator.

✅ All tasks check system resources before starting.

🤝 Contributing

1. Fork the repo.
2. Create a branch: git checkout -b feature-branch
3. Commit changes: git commit -m "Add feature"
4. Push it: git push origin feature-branch
5. Open a pull request 🧷

📬 Contact

Need help? Open issues on GitHub 📫

Good luck exploring the Operating System Simulator! 🚀💡