Unfortunately, I couldn't find any information about a "Nvidia's HD Wallpaper" in the provided search results. However, I can suggest that you might be looking for an anime wallpaper generator, as one of the search results mentions "anime-wallpaper".

If that's the case, you can use the locate-app package to find the executable of the anime wallpaper generator on your system, and then run it to generate a new wallpaper.

Here's a brief snippet:

locate-app anime-wallpaper

This command will search for the anime wallpaper generator on your system and display its location. You can then run the executable to generate a new wallpaper.