Re: Calling Curl from RPG or CL

The main caveat to your approach is that it assumes the RPG programmer has all the knowledge

Yep, for sure, approaches may vary rightly so.
I try to live "off the land" with on system tools (stock or IBM repo PASE) as much as possible, to me - IMHO obviously - an added dependency should bring to me a lot of value to justify to introduce it.
I find relying on string output like stderr or stdout of the command for message passing kind of flimsy, especially when such protocol is not meant explicitly to be stable by all the parties involved (i.e. a yum update will bring a new version of the underlying PASE command that change the output formats, language changes...)... usually the return process numeric return code is much more stable and a convention in *nix (AIX) POSIX world to indicate fault conditions...
just my 2c...