Use pdftk to shuffle even and reverse odd scanned pages in a single document

shuffle.sh

#!/bin/sh

if [ `expr $# % 2` -ne 0 ]
then
	echo "odd number of arguments"
	exit 1
fi

while [ $# -gt 0 ]
do
	even=$1
	odd=$2
	shift 2
	echo shuffling ${even} and ${odd}
	pdftk A="${even}" B="${odd}" shuffle A Bend-1 output ${even%.pdf}-${odd}

	mkdir -p "#recycle"
	mv "${even}" "${odd}" "#recycle"/
done