Small Linux utils: xprop and xev
This is just a random post explaining some useful small utilities on Linux.
This a command line utility that helps you get useful information a selected window. I use this to get the WMCLASS of certain windows that I want to have special rules in a tiling window manager (like i3 or dwm).
You need to run it in terminal:
And than click on a window with the cursor, then you will get the information you need in the terminal window.
This also runs from terminal, opening a white background window where you click or type and you get the output in the terminal window where you started xev.
Useful to get keycode for any key on the keyboard, like the special media keys. But don't type or click a lot, because it will harder to identify the info.