How can I set the positioning/filling of the desktop background image from the command line with one of the available options listed in the Desktop & Screen Saver preferences:
Crop, SizeToFit, FillScreen, Centered, Tiled
I can set the desired background image itself using:
osascript -e "tell application \"Finder\" to set desktop picture to POSIX file \"/Library/Desktop Pictures/Beach.jpg\""
However I'm not sure how to set the positioning/tiling.