bash scripts to upload and delete from the roku menu

or perhaps you mean you rezip and repackage stuff to see what it looks like when you change the graphic locations by a single pixel at a time for placement of logos or something - for that, you can save time by opening up a graphics program with the screen dimensions (1280 x 720) and place your graphics on that and note the pixel locations, and the roku SDK screens template shows you where the visible area is too with guidelines.