Today we're going to unleash more of the mighty
ImageMagick power and learn to make drop shadows, raised buttons,
and proof sheets, and generate different sizes of the same image.
As always, before you manipulate irreplaceable photos, back up
your originals first!
Before we start talking about more ImageMagick functionality,
here's a tip that can help you with all ImageMagick commands. Using
ImageMagick commands in single-line bash shell scripts lets you
quickly modify multiple images in one batch.