Re: revert to previous version?

[Greg A. Woods]

[ On Wednesday, September 5, 2001 at 14:52:08 (-0700), Mike Castle wrote: ]
> Subject: Re: revert to previous version?
>
> On Wed, Sep 05, 2001 at 04:35:21PM -0400, Greg A. Woods wrote:
> > I don't know of any system that can support command-line CVS which does
> > not support I/O redirection on the command-line....
> 
> Didn't I see, somewhere, that there was MVS support for CVS?

Hmmm...  MVS -- but then it wouldn't really be "command line", now would
it!  ;-)

VM/CMS does have I/O redirection though...  (I doubt the syntax is the
same, but any VM/CMS user half-way familiar with unix-ish tools would
probably automatically do the translation in their heads.)

> Does VMS support redirection?

I'm pretty sure it does.  In the DEC line of thins I/O redirection
comes, IIRC, from RT-11 (if not from some earlier OS), and I'm sure VMS
will have any and every RT-11 user-interface feature....

(dmr says that the I/O redirection in Unix was inspired by the same kind
of feature in Multics (which is pretty much where I learned it first
too), but I don't believe Multics invented the concept and dmr also says
the feature was listed in the 1969 Multic manual as "author-
maintained".  In Multics the user-interface was almost infinitely more
baroque, requiring a separate command invocation for each change in
where the output was attached.  It seems Ken thompson can be credited
with inventing the syntax first seen in the Bourne Shell.)

-- 
                                                        Greg A. Woods

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