About rmdir
Deletes a directory.
Syntax
rmdir [OPTION]... DIRECTORY...
–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.
–version output version information and exit.
Examples
rmdir mydir - removes the directory mydir
rm -r directory - would remove a directory, even if files existed in that directory.
Source: http://www.computerhope.com/unix/urmdir.htm