The command find is quite used to Linux.
One of these uses is for finding files and folders that are empty.
Finding empty files:
find . -type f -empty
Finding empty directories:
find . -type d -empty
Counting them is by using pipes, as in the examples below:
find . -type f -empty | wc -l
find . -type d -empty | wc -l
We can do the same for those which are not empty.
find . -type f -not -empty
find . -type d -not -empty
These are just some simple examples. Can you write more about this using contact page.