scanner.sh

#!/bin/bash

while true; do
    DEVICE=$(scanimage -f "%d%n" | grep epjitsu)
    mkdir -p /tmp/scanner
    rm /tmp/scanner/out*.pnm 2> /dev/null
    TIMESTAMP=$(date +%Y%m%d%H%M%S)
    scanimage -d $DEVICE --mode Lineart --resolution 300 --source "ADF Duplex" --batch=/tmp/scanner/out%03d.pnm 2> /dev/null
    if [ -f /tmp/scanner/out001.pnm ]; then
        for file in /tmp/scanner/out*.pnm; do
        #    unpaper -dv 5 --dpi 300 -mt 0.05 --overwrite $file $file
            convert $file -trim $file
        #    identify $file | grep 1x1 && rm $file
        done
        convert -page 2480x3508 -gravity center /tmp/scanner/out*.pnm /home/kuba/Dropbox/Scans/$TIMESTAMP.pdf
        rm /tmp/scanner/out*.pnm
    fi
    sleep 1
done