Bash script for downloading all chapters from the book "The Scientist and Engineer's Guide to Digital Signal Processing" by Steven W. Smith, and merging them into a single PDF file. http://www.dspguide.com/

dspguide_scrape.sh

#!/bin/bash
# Download all chapters from the book "The Scientist and Engineer's Guide to
# Digital Signal Processing" by Steven W. Smith, and merge them into a single
# PDF file.
#
# Requirements: wget, pdftk

baseurl="http://www.dspguide.com"
tmpdir="/tmp"
mergefile="dspguide.pdf"

for i in {1..34}
do
  wget $baseurl/CH$i.PDF -O $tmpdir/dspguide_`printf %02d $i`.pdf
done
pdftk $tmpdir/dspguide_*.pdf cat output $mergefile