Automatically switch desktop background to latest Bing image

switch-desktop-background

#!/usr/bin/env bash

# Fetches the latest Bing image and sets it as desktop background
#
# Requirements:
# curl, jq, nitrogen, convert (imagemagick)
#
# Installation:
# sudo cp switch-desktop-background /usr/local/bin/
# sudo chmod +x /usr/local/bin/switch-desktop-background
#
# and run it using crontab every 6 hours
# crontab -e
# 0 */6 * * * /usr/local/bin/switch-desktop-background


## Bing feed URL
URL=http://www.bing.com/HPImageArchive.aspx\?format=js\&idx=0\&n=1

## Get latest
DATA=`curl -s $URL`

## Save it to /tmp/background
echo $DATA | jq '@uri "http://www.bing.com/\(.images[0].url)"' | sed 's/_\(1920x1080\|1366x768\)/_1920x1200/' | xargs curl -so /tmp/background

## Overlay the description
DESC=`echo $DATA | jq -r .images[0].copyright`
convert /tmp/background  -fill '#FFFFFF30'  -undercolor '#00000030'  -gravity SouthEast -annotate +5+30 "$DESC" /tmp/background

## Set the BG
DISPLAY=:0.0 nitrogen --set-zoom-fill /tmp/background