Two versions for creating CBZ (Comic Book archive) files out of a directory of images. These files can be opened in comic readers. In Linux, applications like Evince also handle CBZ files with ease.

create-cbz.sh

#!/bin/sh

# First version, to use only a particular file-type in a folder

for f in `ls -l | egrep '^d' | awk '{print $NF}'` 
do
	cd $f
	zip $f.cbz *.jpg
	mv $f.cbz ../$f.cbz
	cd .. 
done

# Second version, useful if images are multiple file formats 
# Be careful to clear out non-image files first!

for f in `ls -l | egrep '^d' | awk '{print $NF}'` 
do
	zip $f.cbz $f/*.*
done