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I used to be quite enamored with system() vs QCMDEXC. However I
discovered that QCMDEXC updates the Program Status Data Structure (PSDS)
with message exception data, which I often beneficial and lacking with
system(). Yes, you can get the error number with system() but having the
message data, along with the message number can really help. Now, the
only thing that system() brings to the party that qcmdexc doesn't is that
system() stays in the same activation group as the caller. But, if you're
using EXTFILE, etc then much of that benefit is diminished because those
types of overrides can often be done internally with RPGLE.
The Cadillac of command processors is the QCAPCMD api. That's nice, but a
wee bit more work. Granted, all simplified with the right wrappers. One
often has to be careful with some wrappers though, especially with
QCAPCMD, due to overrides and activation group concerns.

Rob Berendt

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