On Wed, 9 Mar 2022 16:26:36 +0000, Seymour J Metz wrote:
>address SYSTEM mycmd myopts WITH INPUT foo OUTPUT FIFO
>address SYSTEM mycmd myopts WITH INPUT foo OUTPUT STEM bar.
>address SYSTEM mycmd myopts WITH INPUT foo OUTPUT STEM bar. ERROR APPEND baz
>
Each of those is synchronous, not returning control to the Rexx scriipt
until "mycmd myopts" terminates, not suitable for a long-running command.
(Isn't myopts merely part of the command string?)
>Why won't popen let you redirect both stdin and stdout? Or all three?
>
Desirable, but entailing synchronization problems unless Rexx were
also to provide the lacking SYSCAL SELECT:
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/pselect.html#tag_16_400>
>________________________________________
>From: Paul Gilmartin
>Sent: Wednesday, March 9, 2022 10:47 AM
> ...
>OTOH, I know of no other Rexx with the facility of z/OS STREAM POPEN:
--
gil
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