Recursively remove all empty directories

In Linux:

find <parent-dir> -type d -empty -delete

Alternatives:

find <parent-dir> -empty -type d -exec rmdir {} +

find <parent-dir> -depth -type d -empty -exec rmdir -v {} +

find <parent-dir> -depth -type d -empty -exec rmdir -v {} \;

In Windows:

for /f "usebackq" %%d in (`"dir /ad/b/s | sort /R"`) do rd "%%d"