This is probably buggy and not well written, but it's faster than some other CLI image slideshow tools such as feh [citation needed], as it doesn't try to scan the whole folder tree for image files first, but it only has a directory list cache file (txt stored on $HOME, which may be a little bit slow to build for the first time, but not as much), picks one randomly, lists (ls) the image files into a cache file (txt on /dev/shm), and makes one randmoly into the wallpaper (if hsetroot is able to do...