On Mon, 23 Sep 2013 09:08:25 -0400, Gerhard Postpischil wrote:
>...
>And I think Mr. Gilmore had too many asterisks. The pattern I recall was
>to prepend "*." until a unique name resulted (IIRC, giving things like
>*.*.*.jobname.other). I had a home-grown utility, run daily, that
>scratched temporary data sets, and *. was one of the patterns it looked
>for, in addition to the more common SYSnnnnn.
> 
Nowadays, might a viable practice be to scratch anything
that's neither catalogued nor allocated?

Has IBM published a warning that such data set names
are reserved for IBM, and not to be used by application
programmers, or does IBM rely on "common knowledge"
of programmers to avoid them?

Is there a similar part of the name space reserved for
ISVs?  I know that in UNIX there is a convention (not
published as a standard?) that pathnames incorporating
a registered domain name (rewritten big-endian) are
reserved for the registrant.

-- gil

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