[bash] Count pages in all PDFs in current folder and its sub folders

count_pdf_pages_recursively.sh

#!/bin/bash

# Based on https://gist.github.com/pmalek/8521413

sum_pages=0

while IFS= read -r file; do
  cur_pages=$(pdfinfo "$file" | awk '/Pages/{print $2}')
  echo "pdf: $file has $cur_pages pages."
  sum_pages=$(( sum_pages + cur_pages))
done < <(find . -name "*.pdf" -type f)

echo "All pdf files in this directory and its subdirectories have $sum_pages pages."