Exporter en pdf une collection de screenshot png dans le format .*_[0-9]+.png

screenshots2pdf.sh

#!/bin/bash

i=0

IFS=$'\n'
for f in $(find . -iname "*.png" | sort -k2 --field-separator=_)
do
  let "i += 1"
  number=$(printf "%03d" $i)
  convert "${f}" slide_${number}.pdf
done

pdftk slide_*.pdf cat output slides.pdf