Under X11 that can be done with: gdb -p `xprop _NET_WM_PID | sed 's/.*= //'` I think under Wayland it might not be possible since Wayland gratuitously break

Under X11 that can be done with: gdb -p `xprop _NET_WM_PID | sed 's/.*= //'` I think under Wayland it might not be possible since Wayland gratuitously breaks all nice things.