I was looking all over the web for a quick and fast way to do batch
images resizing without opening up any application. This will do the
trick very well.
"This is the ABOUT BBIPS page where I try to explain what the heck
bbips is. Actually, it's just a simple (well, somewhat simple) set of
bash functions all put together in one script with a menu (of sorts)
to help you work on batches (entire directories) of images, all at
once. I do some web design, and I like to take digital pictures, and
have thousands of them. While uploading images to some fancy
photogallery software is fine for a few images, I wanted to harness
the power of Linux and Imagemagick to create something that could be
run from a command line on images on a server that didn't use X, and
that could run very fast and without interaction if I wanted it to, or
that could accept user input."
Visit the official bbips webpage to learn more about all the features