When you run the xev command, it creates a window that displays information about the events that occur when you interact with it, such as mouse movements, button clicks, and keyboard input. The output includes a unique code for each key press, known as the xev keycode.
The keycode is a numerical value that represents the specific key that was pressed. This value is used by the system to determine which action to take, such as inserting a character into a text document or triggering a keyboard shortcut.
In this article, we’ll delve into the world of xev keycodes, exploring what they are, how they work, and how you can use them to decode keyboard input.