W dniu 2013-10-12 17:40, Charles Mills pisze:
Is there any reason that a PDS, RECFM=U or Vxx with half-track or 4K or
whatever records or blocks, could not store *exactly* the same stream of
bytes as a UNIX file, and with no reliance on any "special directory
structure"?
I am too lazy to do the experiment, but I'll bet you could take a COBOL 5 or
other program object in a UNIX file, copy with some "ignorant of any special
details" program from UNIX to a PDS member such as I describe above, copy it
back to a UNIX file, and have it be indistinguishable from the original
program object -- including being executable? If so, does it not prove that
there is no technological reason that a program object could not reside in a
PDS?
What I'm sure is other operating systems use neither PDSE nor PDS and
are quite happy. They also have various program formats, debugging
information, etc. etc.
Last, but not least: despite of black-magic format and features of PDSE
is just some set of bytes resining on disk, nothing more.
--
Radoslaw Skorupka
Lodz, Poland
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