Re: Chroot and ".."

[Jonathan S. Shapiro]

On Thu, 2005-10-13 at 19:23 +0200, Alfred M. Szmidt wrote:
>    The handling of ".." was so unusual that the original version of
>    "rm" did not implement directory remove. There was a separate
>    program, "dvd", which existed to do this. I think "dvd" was dropped
>    in research unix version 4, and the functionality was integrated
>    into "rm".
> 
> Since I'm not sure what the heck you mean with `research unix version
> 4', I'll guess that you are refering to the 4th edition.  rmdir was
> already avaiable in the 1st edition of UNIX.  Then there was the dsw
> command, which you used in conjuction with the front-panel on the PDP
> to delete something (delete from switches).

In the really early versions of UNIX, the "dvd" command was used to
execute "rm -r". I don't remember whether rmdir was present or not, but
it definitely didn't handle recursion. Alfred is correct about "dsw".

Any takers on "dvd"?

shap