On Tue, 21 Sep 2021 21:03:14 -0500, Mike Schwab  wrote:

>If a SORT (or other similar temporary data store) program is one of
>the pipe programs, when the EXEC PGM= program closes the output file
>then the program holding the data needs to output the stored data to
>output ddnames (pipe or output files).
>
Are you thinking of MS-DOS pseudo-"pipes" where the upstream program
wrote a temporary file under-the-covers and the downstream program
processed it?  A pipe in syntax only.  Even Windows is better nowadays.

SORT is a bad conceptual example for Pipethink because SORT can't
write its first output record until it has read its last input record.  Better
to envision a filter which re-formats log records from a long-running (or
never-terminating) program, writing a file to be browsed with SDSF or
tail -f in real time.

-- gil

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