Download and set the current Bing wallpaper as GNOME wallpaper

set-bing-wallpaper.rb

#!/usr/bin/env ruby

OUT_FILE = "#{ENV['HOME']}/Pictures/BingWallpaper.jpg"

require 'open-uri'

f = open('http://www.bing.com/HPImageArchive.aspx?format=xml&idx=1&n=1&mkt=en-US')
s = f.read
img_base = s.match('<urlBase>(.*)</urlBase>').captures[0]
img_url = 'http://www.bing.com/' + img_base + '_1920x1200.jpg'

`wget -O #{OUT_FILE} #{img_url}`

`gsettings set org.gnome.desktop.background picture-uri "file://#{OUT_FILE}"`