Gnome simple-scan post processing script to run OCR with ocrmypdf

ocr-script.sh

#!/bin/bash
# ocr-script.sh
# 
# Useage: set this file as the post-processing script in the simple-scan preferences. No extra arguments needed.
# 
# Requirements:
# - simple-scan
# - ocrmypdf
# 
# For reference, at the time of writing the arguments from simple-scan are:
# $1    - the mime type, eg application/pdf
# $2    - unknown boolean
# $3    - the filename
# $4..N - postprocessing script arguments entered in preferences

filename=$3
/usr/bin/ocrmypdf --deskew --clean --force-ocr "$filename" "$filename" &> /tmp/ocr.log
if [ $? -ne 0 ]; then
  notify-send "OCR failed. See /tmp/ocr.log"
  exit 1
fi
notify-send "OCR complete"