#!/bin/sh

for file in $@; do
	base=`echo $file | awk -F . '{print $1}'`
	ext=`echo $file | awk -F . '{print $2}'`
	for size in 320x200 640x400 800x600; do
		if [ ! -f "$base-$size.$ext" ]; then
			echo cp $file "$base-$size.$ext"
			cp $file "$base-$size.$ext"
			echo mogrify -scale $size "$base-$size.$ext"
			mogrify -scale $size "$base-$size.$ext"
			chmod a+r "$base-$size.$ext"
		fi
	done
	chmod a+r $file
done