Sets National Geographic's Image of the Day as Desktop background for Mac OSX

set_NatGeo_img_as_desktop.sh

#!/bin/bash

cd ~/Pictures/NatGeo

rm NG_img_of_day
rm NG_img_of_day_site

curl http://photography.nationalgeographic.com/photography/photo-of-the-day/ \
    -o NG_img_of_day

# Parsing HTML like this is a sin.
# If it's no longer tagged with "canonical," script will break
IMG_HTML=`grep "canonical" NG_img_of_day | sed -e "s/.*href=\"//" -e "s/\".*//"`

curl $IMG_HTML -o NG_img_of_day_site

# Another hacky bit that will fail when Nat Geo changes their image naming conventions
IMG_URL=`grep "wpf/media-live/photos/000/" NG_img_of_day_site | head -n1 | \
    sed -e "s/.*\(images\)/\\1/" -e "s/.jpg.*/.jpg/"`

DATE=`date +%Y-%m-%d`
curl http://$IMG_URL -o national-geographic-photo-of-the-day_${DATE}.jpg

# Set desktop background to image
sqlite3 ~/Library/Application\ Support/Dock/desktoppicture.db \
"update data set value = '~/Pictures/NatGeo/national-geographic-photo-of-the-day_${DATE}.jpg'"