Scenario:

• 2 main folders, that may have subfolders with the same names (I do not know what names might be duplicated, that's what I am trying to find)


• the subfolders have MANY other files & subfolders so tools with automatic recursion are not really an option


• I only care about duplicate subfolder names on the first level of the two main folders


• contents of the subfolders don't matter


• contents of the files don't matter

I tried using meld GUI but that just takes endless time to finish for these structures.

I tried using diff --brief --report-identical-files folder1 folder2 but that basically reports everything and it does not even include the folders so I can't even | grep identical.

Am I using wrong tools? Or is there some trick that I didn't get from diff --help ? Or am I doing something wrong?

Thanks