Have you ever needed to resize a bunch of images in bulk? Most of us who do web development, image manipulation, or blogging probably have at some point. If you are running in Ubuntu here is a quick way to do this on the console.

$ convert '*.JPG[800x>]' new-name-%03d.jpg

The above script will take all files with a .JPG extension and resize them to 800 pixels wide and name the new version of the file as new-name-001.jpg. The %03d tells ImageMagick to add numbers sequentially using 3 digits. Pretty cool eh?