PY-DOS 1.0.0

PY-DOS is a retro-inspired, terminal-based operating system simulation written entirely in Python.

It recreates the classic DOS experience while providing an educational and expandable platform for learning file systems, memory management, and command-line interfaces.

Developed from scratch by Ege
Licensed under the MIT License

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Features

• Virtual RAM and Disk system (ram.py, disk.py)
• JSON-based disk storage (simulating 512 MB)
• File & folder commands: MKDIR, CD, TREE, COPY, RENAME, etc.
• CPU and RAM simulation with basic cycle tracking (cpu.py, ram.py)
• Command-line interface with keyboard input
• Modular and expandable code structure

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Technical Details

• PY-DOS uses a "128 MB RAM simulation" and a 512 MB "virtual disk" (disk.json)
• The disk is JSON-based and saves automatically after a REBOOT
• If you use RAMLOAD and can’t see the file in disk, just run REBOOT to commit RAM to disk
• All data is saved between sessions through disk.json

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Requirements

• Python 3.8 or later
• Works on Windows, Linux, and macOS (platform-independent)

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Screenshots

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All Commands

• DIR - List files and directories
• TYPE - Show file content
• WRITE - Write text to a file
• DEL - Delete a file
• RENAME - Rename a file
• COPY - Copy a file
• MKDIR - Create a new directory
• CD - Change current directory
• TREE - Display directory tree
• RAMLOAD - Load a key-value into RAM
• RAMCLEAR - Clear all RAM
• RAMSHOW - Display RAM contents
• SYSINFO - Display system information
• REBOOT - Save RAM to disk and reboot the system
• FORMAT - Format (reset) the disk
• PRINT - Print text to screen
• EXIT - Exit PY-DOS