ION — Terminal System Monitor

Overview

ION is a high-performance terminal system monitor built for speed, clarity, and smooth motion. It provides real-time system metrics with a futuristic, neon-accented TUI. Linux is the primary target, but functionality extends to macOS and Windows with graceful fallbacks.

Features

• CPU usage (total and per-core) with live sparklines
• RAM, disk, and network throughput monitoring
• GPU usage detection with safe fallback to N/A for unsupported devices
• Top 5 processes by CPU usage with live navigation and selection highlight
• Rolling CPU and RAM history buffers with spaced sparklines for readability
• WiFi: SSID, signal strength, connection state
• Bluetooth: adapter status, connected devices
• Animated ASCII startup banner with color gradients and subtle TachyonFX effects
• Smooth transitions and subtle animations for all gauges, sparklines, and tables

Installation

1. Install Rust (stable).
2. Clone the repository.
3. cargo build --release
4. Run: target/release/ion

Usage

Run ion in your terminal. The interface auto-refreshes every ~200–300ms for up-to-date system metrics.

Keybindings

• q — Quit
• r — Refresh immediately
• / — Toggle process navigation mode
• Up/Down or j/k — Navigate processes in navigation mode

Architecture

• src/system.rs — Collects system and connectivity metrics with OS fallbacks
• src/app.rs — Event loop, state management, and async updates
• src/ui.rs — Renders all TUI elements using ratatui widgets
• src/components/ — Contains reusable widgets for gauges, sparklines, tables, and animated banner