ImageMagick
- A collection of tools and libraries to read, write, and manipulate an image in any of the more popular image formats. (Unix/Linux/Win 95/98/2000/Mac/VMS/OS/2)
- http://imagemagick.org/
ImageMagick Hacks - A list of tools that use ImageMagick and articles that explain its use. - http://savage.net.au/ImageMagick.html
Graphics from the Command Line - Article that demonstrates that ImageMagick command line tools can be used to flip, size, rotate, and stylize various file format images in batch. - http://www-106.ibm.com/developerworks/linux/library/l-graf/