#!/bin/bash
if [ "$1" == "-h" ] ; then
    echo "
        pdfsplit - extract a range of pdf pages with ghostscript

         usage:
          pdfsplit firstPage lastPage inputFile.pdf

        output file will be named inputfile_pXX-pYY.pdf

         depends:
          gs - ghostscript 

          "
    exit 0
fi

# the following is from a stackoverflow answer
# function pdfsplit()
# {
    # this function uses 3 arguments:
    #     $1 is the first page of the range to extract
    #     $2 is the last page of the range to extract
    #     $3 is the input file
    gs -sDEVICE=pdfwrite -dNOPAUSE -dBATCH -dSAFER \
       -dFirstPage=${1} \
       -dLastPage=${2} \
       -sOutputFile=${3%.pdf}_p${1}-p${2}.pdf \
       ${3}
# }