#!/usr/bin/ruby

PROGRAM="feh --bg-scale "
DIR=ENV["HOME"]+"/fondos/"

#If there is an argument, it must be the desired background image

if ARGV.size == 1 then
file = ARGV[0]
else
listado=Dir.entries(DIR)
listado.delete "."
listado.delete ".."
file = DIR+listado[(rand(listado.length))]
end

exec "#{PROGRAM} \"#{file}\""