**LinuxTool** is a lightweight, zero-dependency command-line utility engineered in pure ANSI C for Linux system administrators, developers, and power users. Designed for cross-platform compatibility (Linux, macOS, Windows via WSL/MinGW), it delivers an interactive, offline-ready interface for discovering, learning, and executing essential system commands across 12 logically organized categories—including file management, process control, networking, text processing, system monitoring, and security tools. The application features a menu-driven CLI with ANSI color-coded rendering, keyword search, and dynamic category filtering, transforming scattered man pages into a unified, keyboard-driven knowledge base. Built with a static `ToolEntry` struct array and stack allocation, LinuxTool ensures deterministic O(1) lookup performance and minimal memory footprint (~40 KB binary). Each entry provides concise command syntax, common flags, and practical examples, while optional execution mode launches tools via `system()` or `execvp()` with user confirmation. Its modular architecture separates initialization, UI rendering, search logic, and platform utilities via clean function boundaries, enabling straightforward extension. Strict input validation, buffer-safe string handling, and conditional compilation (`__linux__`, `_WIN32`) ensure robustness and portability. Ideal for CTF preparation, sysadmin workflows, or rapid syntax reference, LinuxTool reduces cognitive overhead when managing Linux systems. With MIT licensing, transparent source code, and portable compilation flags, the project invites customization for personalized tool databases or integration into larger training pipelines—empowering users with reliable, offline-capable command discovery while exemplifying disciplined native C programming. 🔧🐧💻

linuxtool

a lightweight, zero-dependency command-line

a lightweight, zero-dependency command-line