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Within CL it works fine using:
QSH CMD('mkdir -p /one/two/three/four')
So why not do it that way in RPG as well? (via QCMDEXC, system(), etc)
You'll get rotten performance, but that's no different from CL.
I've tried QzshSystem from Rpg but I always get error 7. I've checked
old postings but I did not understand the right way to code.
The way that QShell works is that it spawns a separate job for each
command that you run. That job is connected to the original job via 3
pipes. One for standard input, one for standard output and one for
standard error. (That's why QShell commands seem so slow -- for each one
it has to create a new job and connect the pipes!)
The QzshSystem() API does NOT create the background job or the pipes for
you. You have to do that yourself -- making this API almost completely
useless! (In my opinion.)
You can use the spawn() or spawnp() APIs to run a QShell command. If you
use the pipe() API to create the pipes, you can have a functioning QShell
command this way.
A much better (more efficient) way to create these directories is to use
the mkdir() API instead of trying to call QShell. mkdir() doesn't have
the option to automatically create the parent directories, but that's not
very difficult to do with a simple %scan() loop in RPG.
Just wrap the routine up in a subprocedure and stick it into a service
program, then you'll always have it!
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