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  "path": "/2026/04/27/kerneluno-a-lightweight-os-for-arduino-uno-with-a-linux-like-shell/",
  "publishedAt": "2026-04-27T02:47:11.000Z",
  "site": "https://www.cnx-software.com",
  "tags": [
    "Atmel AVR",
    "Hardware",
    "Arduino",
    "development board",
    "Linux",
    "open source",
    "KernelUNO – A lightweight OS for Arduino UNO with a Linux-like shell",
    "CNX Software - Embedded Systems News"
  ],
  "textContent": "KernelUNO is an Arduino sketch with 546 lines of code that provides a lightweight OS for the Arduino UNO with a Linux-like shell offering commands such as ls, df, uname, and so on. All you need is an Arduino UNO R3 or a compatible board with a Microchip ATmega328P microcontroller, a USB cable for programming, and optionally a few LEDs and resistors for testing the gpio command in the terminal. KernelUNO offers the following features: Virtual Filesystem – Create files and directories in RAM (/dev, /home) Hardware Control – GPIO management with pin mode configuration System Monitoring – Memory usage, uptime, kernel messages (dmesg) Interactive Shell – Real-time command execution with input buffering 23 built-in commands File system commands – ls, cd, pwd, mkdir, touch, cat, echo [text] > [file], rm, info [name] Hardware commands pinmode [pin] [in/out] – Set pin mode write [pin] [high/low] – Write to pin read [...]\n\nThe post KernelUNO – A lightweight OS for Arduino UNO with a Linux-like shell appeared first on CNX Software - Embedded Systems News.",
  "title": "KernelUNO – A lightweight OS for Arduino UNO with a Linux-like shell"
}