2007/7/10, 12 34 <rubyforum / web.knobby.ws>:
> Coming from OS X, I'm used to protection to overwriting files. I have
> the need for such protection. Before I write it myself is there a
> standard method for this? I'd like it work like OS X where if a file of
> the same name exists, the file to be copied gets an index number. For
> example, existingFile.txt already is in the dest directory, and a file
> of same name being copied becomes existingFile1.txt.
>
> I don't think even this newbie will find it difficult, but it seems with
> all the File and FileUtil methods something like this woudd exist.

I believe IO::CREAT might do what you need.  Try this

File.open("foo", IO::CREAT | IO::WRITE) do |io|
...
end

Kind regards