cxpm(1) on Linux

The text b5feeb8785ca, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.

Check an XPM (X PixMap) file, versions XPM 1, 2, or 3.