Yes, dir /s file
Looks for the file in the current directory and all subdirectories. I wish Unix ls could do the same thing as easily. MS-DOS rules forever I guess.
I think 'find ./ -iname file' does the same on Linux?
My comment was light-hearted and I was surprised it was downvoted. I mean obviously Unix can so this simple function, but the ls command can't I don't think, which is my only claim. And many people don't realise that the MS-DOS equivalent to ls can do it.
Using globbing, this can still be done without learning find's syntax.