Udev

Definitions

1. The Linux userspace device manager that dynamically creates and removes device nodes in `/dev` in response to kernel events (uevents) when hardware is plugged in or removed. Udev rules — written in `/etc/udev/rules.d/` — allow administrators to set permissions, create symlinks, and trigger scripts based on device attributes like vendor ID or serial number.

   In plain English: The Linux system that automatically detects when you plug in or remove hardware and sets up the right files and permissions for it.

   Example: "I wrote a udev rule that gives our app user read/write access to the USB serial device so we don't need to run as root."

Related Terms

• Kernel Module
• Loadable Module
• Microkernel
• Perf Tool
• Spin Lock
• Swappiness
• User Space
• X11
• Linux Kernel Community
• Linux Kernel Module