The crazy aim is to generate a Linux implementation of changing log-in backgrounds in Windows.
Note : An active internet connection is required to download background images.
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Download the file install-grub-random
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Then in a terminal enter :
chmod 777 install-grub-random sudo ./install-grub-random
Tip: You can change the images to be shown during boot by adding/removing images in the ~/grubSplashImages directory.
Godspeed.