Get files from crossref for any DOI in a .ris file. That newline in the sed command is supposed to be there

getDOIfiles

#!/bin/bash

#usage: ./getDOIfiles myRisFile.ris

if [[ -z $CROSSREF_PID ]]
	then
		echo "CROSSREF_PID is not set in your env"
		exit
	fi

for val in `grep "^DO" $1 | cut -d " " -f 4 | sed -e s/
//`
do
		doi=$val
		url="http://doi.crossref.org/servlet/query?format=unixref&id=${doi}&pid=$CROSSREF_PID"
		echo $url
		file=`echo $doi | sed -e 's|/|_|g'`
		curl -v $url -o "${file}.xml"
done

#ends