#!/bin/bash
SAVEIFS=$IFS
IFS=$(echo -en "\n\b")
for f in $(find -name "*.pdf")
do
	xpath=${f%/*} 
	xbase=${f##*/}
	gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile=${xpath}/converted-${f##*/} $f &> log.txt
	mv ${xpath}/converted-${f##*/} $f
	echo $f converted
done
IFS=$SAVEIFS