getbib.sh

#!/usr/bin/env bash
#author         :ormux
#date           :2019/08/31 (August 31)
#description    :generates a LaTeX bibliography based on the DOI of a pdf document for easy referencing.
#title          :getbib.sh
#usage          :bash getbib.sh <DOI/file>
#version        :0.1

if [[ -z $1 ]]; then
  echo "usage: getbib.sh file.pdf";
  echo "usage: getbib.sh 10.1524/9783486595192.1";
  exit;
fi

if [[ -f $1 ]]; then
  doi=$(pdfinfo "$1" 2>/dev/null | grep -io "doi:.*") ||
  doi=$(pdftotext "$1" 2>/dev/null - | grep -io "doi:.* -m1");
else
  doi=$1;
fi

curl -sL "https://api.crossref.org/works/$doi/transform/application/x-bibtex" -w "\n"