Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
Occasionally, you’ll want to delete an image from an image file. For example, you might have an image file with multiple images, one of which has become obsolete. Instead of keeping it in the file, you can delete it to conserve space, while still keeping the other images intact. The basic syntax is
imagex /delete image_file "image_name" | image_number