earthporn.sh

#!/bin/bash

# Download images from reddit.com/r/earthporn
# Needs "jq" and "wget" to run correctly
# wget can be replaced with curl too

# Size limit of 2MB
# Use size as a proxy for resolution
SIZELIMIT=$((2*1024*1024))

# Destination folder
WPDIR=~/Pictures/Wallpapers
[ -d $WPDIR ] || mkdir -p $WPDIR
cd $WPDIR

for type in hot new top; do
    curl -s \
      -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:69.0) Gecko/20100101 Firefox/69.0' \
      https://www.reddit.com/r/earthporn/${type}.json?limit=100 | \
    /usr/local/bin/jq '.data.children[].data.url' | \
    tr -d '"' | \
    grep jpg | \
    while read url; do
      /usr/local/bin/wget -q -c $url
    done
done

# Delete if smaller than $SIZELIMIT bytes
find . -type f -name '*jpg' | while read i; do
  if [ ! -s "$i" ]; then
    rm -f -- "$i"
    continue
  fi
  size=$(wc -c < "$i")
  if [ "$size" -lt $SIZELIMIT ]; then
    rm -f -- "$i"
    continue
  fi
done

# Only keep the latest 1000 images
# ls -1t | tail +1001 | xargs rm -f