cleanlinks – remove dangling symbolic links and empty directories
The cleanlinks program searches the directory tree descended
from the current directory for symbolic links whose targets do not exist,
and removes them. It then removes all empty directories in that directory tree.
cleanlinks is useful for cleaning up a shadow link tree created
with lndir(1) after files have been removed from the real directory.
for example :
If you want remove all the empty directories in the tmp folder
$ cd /tmp
This will clean all the empty directories in the tmp folder.