A PDF tool Scala script
Usage:
- Install amm first
sudo sh -c '(echo "#!/usr/bin/env sh" && curl -L https://github.com/com-lihaoyi/Ammonite/releases/download/2.3.8/2.13-2.3.8) > /usr/local/bin/amm && chmod +x /usr/local/bin/amm' && amm
- To generate outline to some big scanned pdf book
amm qnpdf.sc outline -f pathToSomeScannedPdfWithoutOutline.pdf -n 20