```ruby
require 'rubygems'
require 'mini_magick'
img = MiniMagick::Image.from_file("jpeg.jpg")
img.combine_options do |c|
c.gravity 'Southwest'
c.draw 'text 10,10 "whatever"'
c.font '-*-helvetica-*-r-*-*-18-*-*-*-*-*-*-2'
c.fill("#FFFFFF")
end
img.write("new.jpg")
```