The manpage only gives these options:
--ignore-fail-on-non-empty
ignore each failure that is solely because a directory
is non-empty
-p, --parents Remove DIRECTORY and its ancestors. E.g., `rmdir -p a/b/c' is
similar to `rmdir a/b/c a/b a'.
-v, --verbose output a diagnostic for every directory processed
--help display this help and exit
--version output version information and exit
How would I pipe a find or ls to recursively delete all empty directories in a file tree?
find . -type d -empty -delete
Like all destructive commands, print and sanity check the targets (omit the -delete) before executing the full command.