Change the wallpaper every hour using Unsplash.com API.

unsplasher.sh

#!/bin/bash

# TODO:
# Add switch to change the wait period
# Add switch to change the image geometry
while [ : ]
do
  wget --quiet -O ~/dotfiles/bg.jpg `curl -s "https://api.unsplash.com/photos/random/?client_id=YOUR_UNSPLASH_CLIENTE_ID" | grep -E "full\":\"https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)" -o | grep -E "https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)" -o`
  # Resize the image to optimize
  convert ~/bg.jpg -resize 1280 ~/bg.jpg
  # Set the background
  feh --bg-fill ~/bg.jpg
  # Wait 1 hour
  sleep 1h
done