Is there a way to, from the command line, on Wayland Linux, print the current displays, both their physical pixel size and their "logical" (display independent pixels / apple "points" / whatever wayland calls it) pixel size? There is a freeware app called wlinfo that purports to do this, but when I run it it prints inaccurate information (does not appear to support fractional DPI) and then crashes.

@mcc If you're using GNOME:

# gdctl show

The reason you're getting all sorts of answers is that what you want to find out is more of a function of the compositor rather than 'Wayland', and there are a lot of different compositors.