dd-equivalent for VMS

Ed Thierbach ethierba at umich.edu
Fri Jun 16 08:04:17 CDT 2017


BACKUP/IMAGE might work.  I have a dim recollection of moving system drives
around that way, but it's been a few decades. :-)

Best of luck, and let us know how it goes.
-Ed-

On Fri, Jun 16, 2017 at 8:46 AM, Paul Koning via cctalk <
cctalk at classiccmp.org> wrote:

>
> > On Jun 16, 2017, at 3:00 AM, Chris Hanson via cctalk <
> cctalk at classiccmp.org> wrote:
> >
> > On Jun 15, 2017, at 11:30 PM, Rob Jarratt via cctalk <
> cctalk at classiccmp.org> wrote:
> >>
> >> Is there a dd equivalent for VMS?
> >
> > I’m pretty sure PIP is the “dd” equivalent on DEC operating systems in
> general.
>
> No, "pip" is a file manipulation program, which -- depending on OS --
> provides as command options the analog of Unix commands cat, cp, mv, ls,
> etc.
>
> If you mean "dd" as a partial file copying program, that's something I
> haven't seen on DEC OSs.  For image copying (non-file-structured copying),
> it may be that pip can do that but often it won't because it only does file
> structured operations in many systems.  On VMS (and some other systems)
> there may be something like "copy/image" which may work.  Support for raw
> block access of file devices varies, though; it depends on whether the OS
> allows such a thing.  To pick one example, RSTS originally did not allow
> that; it was added part way through the OS history.
>
>         paul
>
>
>


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