MyCMD is a fully custom command prompt implemented in Java.
It mimics the behavior of Windows cmd.exe with commands like dir, cd, echo, mkdir, del, and more — plus it has its own installer.
For a complete guide detailing the syntax, arguments, and options for every command, please see the full COMMANDS.md file.
MyCMD/
┣ README.md # Project description, badges, usage
┣ pom.xml # Maven build config
┣ src/
┃ ┗ main/
┃ ┗ java/
┃ ┗ com/
┃ ┗ mycmd/
┃ ┣ App.java # Main entry point (starts the shell)
┃ ┣ ShellContext.java # Stores current working dir, state
┃ ┣ Command.java # Interface for all commands
┃ ┗ commands/ # All custom command classes
┃ ┣ DirCommand.java
┃ ┣ CdCommand.java
┃ ┣ EchoCommand.java
┃ ┣ MkdirCommand.java
┃ ┣ RmdirCommand.java
┃ ┣ CopyCommand.java
┃ ┣ DelCommand.java
┃ ┣ TypeCommand.java
┃ ┣ ClsCommand.java
┃ ┣ HelpCommand.java
┃ ┣ ExitCommand.java
┃ ┗ VersionCommand.java
┣ icons/
┃ ┗ mycmd.ico # App/installer icon
┣ scripts/
┃ ┣ build-windows.bat # Build + package EXE + run installer script
┃ ┗ build-linux.sh # Build + package for Linux (deb/rpm)
┣ installer/
┃ ┗ mycmd.iss # Inno Setup script for Windows installer
┗ dist/ # Output folder (auto-created after build)
┣ bin/
┃ ┗ MyCMD.exe # Wrapped executable (via Launch4j or jpackage)
┣ lib/
┃ ┗ dependencies.jar # Extra JAR dependencies (if any)
┗ setup.exe # Generated installer (from Inno Setup)
| Feature | Description |
|---|---|
| ✅ Windows-like Commands | Supports dir, cd, mkdir, del, copy, type, cls |
| ⚡ Extensible | Easily add new commands via Java classes |
| 🖥️ Executable Packaging | Packaged into .exe using Launch4j |
| 🛠️ Installer Wizard | Simple setup using Inno Setup |
| 🌐 Cross-Platform | Works on Windows and Linux (via jpackage) |
To build MyCMD you need:
- Java JDK 17+
- Apache Maven
- Launch4j (for
.exewrapping) - Inno Setup (for Windows installer)
(Linux users can use jpackage instead of Launch4j/Inno Setup.)
Building MyCMD is simple and automated for both Windows 🪟 and Linux 🐧 platforms
scripts\build-windows.bat📦 This script will automatically:
1.🧩 Build the JAR using Apache Maven
2.⚙️ Wrap it into an .exe using Launch4j
3.🪄 Generate a setup.exe installer via Inno Setup
dist/
┣ bin/MyCMD.exe
┣ lib/dependencies.jar
┗ setup.exe
chmod +x scripts/build-linux.sh
./scripts/build-linux.sh
This will build a .deb or .rpm package using jpackage.
After installation, run:
MyCMD
You can now use commands like:
> dir
> cd ..
> mkdir test
> echo Hello World!
> type file.txt
> del file.txt
> help
> exit
Note
There are many commands left like ls and Ping Command
Contributions are what make the open-source community such an amazing place to learn, inspire, and create! 💪
We welcome all kinds of improvements — from fixing bugs 🐛 to adding new commands ⚙️.
- 🍴 Fork the repository
- 🌿 Create a new branch
git checkout -b feature/your-feature-name
🧾 Apache License 2.0
This project is open-source and available for anyone to use, modify, and share under the terms of the Apache License.
✨ Attribution is appreciated but not required.
📎 For complete terms, check the LICENSE file.