Ghostscript Tools

extract-pdf-pages.sh

#!/usr/bin/bash

set -e

# https://stackoverflow.com/a/70438840

declare -a files=()
declare -a arr=($(echo "$2" | tr "," " "))

# splitting
for i in "${arr[@]}"; do
        gs -dBATCH -sDEVICE=pdfwrite -sPageList="$i" -dNOPAUSE -sOutputFile="$i".tmp "$1"
        # reordering for combining
        files+=("$i.tmp")
done

# combining to combine.pdf
gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE="$3" -dBATCH "${files[@]}"

# removing temporary files
rm "${files[@]}"