Shell script to generate a PDF file from a large amount of scanned pages.

make_pdf.sh

cd pictures
FILES=$( find . -type f -name "*jpg" | sort -V )
mkdir temp && cd temp 
for file in $FILES; do 
    BASE=$(echo $file | sed 's/.jpg//g');
    convert ../$BASE.jpg $BASE.pdf; 
    done && 
pdftk *pdf cat output ../FINAL_NAME.pdf && 
cd .. 
rm -rf temp