🌌 NullShell - Professional Modular Shell

NullShell is a modern, professional-grade shell built in C, designed with a focus on modularity, advanced scripting, and premium user experience. It draws inspiration from Zsh and Fish while maintaining a lightweight and extremely customizable architecture.

✨ Key Features

• 🚀 Modular Architecture: Expand functionality via dynamic .so plugins at runtime.
• 🎨 Premium UI/UX:
  • Real-time syntax highlighting (Fish-style existence checks).
  • Dynamic RPROMPT (Right-hand prompt) for status and exit codes.
  • Custom themes (neon, ocean, monokrome) with live switching.
• 📜 Advanced Scripting:
  • Full support for if, while, and for loop control structures.
  • Arrays: Native support for array variables arr=(a b c) and indexing ${arr[0]}.
  • Recursive globbing with ** support.
• ⌨️ Pro-grade Line Editing:
  • Rich Tab Completion for commands, files, keywords, and local variables.
  • Standard keybindings (Ctrl+A, Ctrl+E, Alt+F, Alt+B, Ctrl+U, Ctrl+K).
  • Reverse incremental search (Ctrl+R).
• 🛡️ Robust Job Control: Professional terminal management and background task handling.

🛠️ Installation

Prerequisites

• GCC or Clang
• Make
• standard C libraries (libc, libdl)

Building from Source

git clone https://github.com/user/NullShell.git
cd NullShell
make
./nullshell

Installation

sudo make install

🔌 Plugin System

NullShell can be extended at runtime. To load a plugin:

plugin load /path/to/plugin.so

Create your own plugins using the registration API:

#include "builtins.h"
int nullshell_plugin_init() {
    builtin_register("mycmd", my_func);
    return 0;
}

🎨 Theming

Switch themes on the fly for an immediate aesthetic change:

theme ocean
theme neon

📄 License

MIT License. Feel free to fork and extend!