The script downloads all Under Dusken papers from 2001 to 2013.

git clone https://github.com/dvikan/underduskengrabber.git

Or

#!/bin/bash

for year in $(seq 2001 2012);do
    for i in $(seq 1 16);do

        if (( year == 2012 && i == 16 )); then
            url="http://dusken.no/media/publications/2012/UD16_webpdf.pdf"
        else
            url="http://dusken.no/media/publications/2012/$i-${year}_1.pdf"
        fi

        headers=$(curl --silent -q -I "$url")
        echo "$headers" | grep -q "200 OK" || echo "Not found: $url"
        echo -n .

        wget -P pdfs "$url"
    done
done

cat dusken-2013-URL-er.txt | while read url; do
    headers=$(curl --silent -q -I "$url")
    echo "$headers" | grep -q "200 OK" || echo "Not found: $url"
    echo -n .
    wget -P pdfs "$url"
done