How to delete all files and directories with an exception

Question

I have a few files and directories, (all directories contain files):

C:\\ABC
│   file1.txt
│
├───folder1
│       oneormorefiles.ext
│
├───folder2
│              


        

Answer 1

I would do it the following way:

rem // Change to the target root directory:
pushd "C:\ABC" && (
    rem // Loop over all immediate sub-directories:
    for /F "delims= eol=|" %%F in ('dir /B /A:D "*"') do (
        rem // Remove sub-directory tree unless name is `log`:
        if /I not "%%F" == "logs" rd /S /Q "%%F"
    )
    rem // Delete files located in the root directory:
    del /A /F /Q "*.*"
    rem // return to the original directory:
    popd
)