Find and list all directories whose contents is less then a particular size.
For example, say you want to scan your TV Shows Library to find any directories which only contain an image and an ampty season folder but no video files.
find . -mindepth 1 -maxdepth 1 -type d -exec du -ms {} + | awk '$1 <= 50' | cut -f 2-
if satisfied, add the following to delete all those directories
| xargs -d \\n rm -rf