Linux: X11 Keyboard Key Names
X11 Keysym Names
Here's the common ones:
How to Find keycode / keysym of a Key?
xev lets you find the keycode / keysym of a key.
xev in terminal, then press a key. It'll display output in terminal.
note, mouse movement will generate lots of outputs. So, try not to move the mouse.
to quit, mouse click on the close box of the popup window.
If you don't know what's keycode / keysym, see: Linux: xmodmap Tutorial
Linux Keybinding How-to
If you have a question, put $5 at patreon and message me.