Python OS Simulator

A terminal-based operating system simulator built with pure Python. This project demonstrates core programming concepts such as Object-Oriented Programming, file handling, system simulation, and modular architecture without relying on external frameworks.

The simulator mimics basic operating system components including user authentication, file management, process handling, and memory simulation.

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Overview

The goal of this project is to simulate how a simple operating system manages different subsystems. Instead of focusing on UI or frameworks, the emphasis is on core logic, system design, and clean code structure.

This project was built as a learning exercise to strengthen understanding of:

• Python fundamentals
• OOP design
• Modular programming
• State management
• File-based persistence

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Overview

The goal of this project is to simulate how a simple operating system manages different subsystems.

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Screenshots

System Start

Main Menu

File System

Folder Manager

Process Manager

Memory Manager

Terminal

System Logs

Features

• User Authentication

  • Register and login system
  • Persistent user storage

• File System Simulation

  • Create virtual files
  • Read stored file content
  • Delete files
  • List available files

• Process Manager

  • Simulate running processes
  • Assign process IDs (PID)
  • View active processes
  • Terminate processes

• Memory Manager

  • Simulate memory allocation
  • Track used and free memory
  • Deallocate memory

• Create Folder

  • Create folder
  • Open fodler
  • Delete fodler
  • List folder

• System Logging

  • Track important system events
  • User login activity
  • File operations
  • Process actions

Shell Commands

ls                     # list files
mkdir <folder_name>    # create folder
touch <file>           # create file
touch <folder/file>    # create file inside folder
rm <file>              # delete file
rm <folder/file>       # delete file inside folder

System Commands

help
about
system_info
uptime
clear
exit

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Project Structure

python-os-simulator/
│
├── core/
│   ├── cmd.py
│   ├── file_system.py
│   ├── folder.py
│   ├── logger.py
│   ├── Main.py
│   ├── memory.py
│   ├── pos.py
│   ├── process.py
│
├── data/
│   │ └── files/
│   └── player/
│         └─ main.py
│   ├── files.json
│   ├── logs.txt
│   ├── test.txt
│   └── users.txt
│
│
├── screenshots
│
├── .gitattributes
├── .gitignore
├──  LICENSE
└── README.md

Each module is responsible for a specific subsystem of the simulated OS.

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How It Works

When the program starts, users are presented with a login/register interface. After authentication, the main system menu allows interaction with various simulated OS components.

The simulator uses file-based storage to persist data between sessions.

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Example Usage

====================================
        PYTHON OS
====================================

1. Login
2. Register
3. Exit

Enter choice: 1

Login successful!

Main Menu
1. File System
2. Creat Folder
3. Process Manager
4. Memory Manager
5. View Logs
6. Terminal
7. Logout

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Technologies Used

• Python 3
• Object-Oriented Programming
• File Handling
• JSON / Text Storage

No external libraries or frameworks were used.

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Changelog

v1.2.0

New Features

• Added terminal commands (about, uptime, system_info)
• Improved command terminal usability

Improvements

• Better system interaction through command interface

v1.1.0

• Introduced Folder Manager (create, open, delete folders)
• Enabled file creation inside folders
• Improved modular interaction between folder and file system
• Stability improvements and bug fixes

v1.0.1

• Fixed login validation
• Fixed process manager edge case
• Improved memory manager safety

v1.0.0

• Initial release
• File system
• Process manager
• Memory manager
• Logging

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Project Stats

~1600+ lines of Python code
8 modular components
Terminal-based OS simulation

Author

Dhruv

Python Developer | Exploring System Design GitHub: https://github.com/Dhruv-Cmds