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Hi,
The recent flurry of activity in the thread relating to QzshSystem etc leads
me to wonder if any of the respondents with more experience than I at low
level programming can provide an answer to a question that has eluded me for
some years.

If an existing AS400 program has processed a request which has been written
to stdout, can I create a "simple wrapper" for that process that will allow
me to read the contents of stdout and then rewrite stdout?

While it may be possible by using the OVRDBF command where the existing
program has been written in C/400,  this does not appear to be the case
where the output has been generated by a call to a system API that populates
stdout, for example QtmhWrStout in an RPGLE program or a call to DB2WWW.

This is essentially a piping exercise. I have recently seen some unsupported
code from IBM that attempts to emulate the popen() and pclose() functions
that are available in some languages. These appear to provide for spawning a
child process to run a request where the input/output can be piped, but I am
not game to use them.

This is one of those things that one would think to be so simple, but alas.

Cheers, Peter

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