Linux: X11 Mouse Button Numbering

X11 Mouse Button Numbering

In Linux X11, each mouse button is assigned a number.

Here's the numbering:

• 1 = left button
• 2 = middle button (pressing the scroll wheel)
• 3 = right button
• 4 = turn scroll wheel up
• 5 = turn scroll wheel down
• 6 = push scroll wheel left
• 7 = push scroll wheel right
• 8 = 4th button (aka browser backward button)
• 9 = 5th button (aka browser forward button)

〔see Linux: Swap Mouse Buttons〕

How to find the X11 mouse button number?

type xev in terminal, then click the button to see its number.

To exit xev, just close its window.