#!/bin/bash

# Download tree-of-life.jpg
# from http://www.open.edu/openlearn/nature-environment/natural-history/tree-life

base=www2.open.ac.uk/openlearn/treeoflife/treeOfLifePoster/TileGroup
parallel -j30 wget -c $base{3}/6-{1}-{2}.jpg ::: {0..28} ::: {4..42} ::: {1..7}
parallel eval convert +append 6-{0..28}-{}.jpg line{}.jpg ::: {4..42}
convert -append line{4..42}.jpg tree-of-life.jpg

echo Cleanup with
echo rm line*.jpg 6-*-*.jpg