bash script to convert a PDF of images into a searchable PDF

ocrify.sh

#!/bin/bash

if [ ""$#"" -ne 1 ]; then 
	echo "usage: ocrify <filename.pdf>"
	exit 0
fi

FILENAME=$1
OCRFILE=${FILENAME//./_OCR.}

convert -density 300 $FILENAME -type Grayscale -compress lzw -background white +matte -depth 32 page_%05d.tif

for i in page_*.tif; do echo $i; tesseract $i $(basename $i .tif) pdf; done

pdftk page_*.pdf cat output $OCRFILE

rm -rf page_*{tif,pdf}