> On Feb 1, 2018, at 1:10 PM, Paul Gilmartin > <[email protected]> wrote: > > On 2018-02-01, at 10:28:47, Kirk Wolf wrote: > >> With bash you can handle multiple pipes at once without explicit named >> pipes ("process redirection"), >> > Also Korn Shell. I'm aware of the construct; I haven't mastered > it -- I try to stay in POSIX for portability. But does it have > the flexibility of either C or CMS Pipelines? I could wish > /bin/sh had the equivalent of Rexx "SYSCALL pipe" (sort of like > ADDPIPE/ADDSTREAM). > > Interestingly, while z/OS shell indicates syntax error on an > attempted process redirection, it reports with a unique message. > Apparently the authors were aware but chose not to implement it. >
Huh - may not know what I am talking about here, but any C program on a *nix variant, like AIX, can open and handle as many pipes as you want. STDIN/STDOUT is just one set, and you can reopen them as many times as you want. Timing is usually done with signal and/or semaphores - or better yet with message queues. :)
