This section deals with just finding the version information for Opus and
how to get more information from an Opus ARexx error code.
The two commands that deal with this are:-
dopus version
Every Opus has a version and revision number, as per the normal Style Guide
recommendations. This is not the number that's normally associated with the
release, for example: Directory Opus Magellan had a release of 5.661, (final
release after patches were applied), the actual version/revision was 5.1500.
Generally with every release there are either more or changes to existing
ARexx commands available. Obtaining the version/revision information helps
you in tailoring your scripts to a particular release of Opus.
dopus error
Generally when an ARexx script terminates, the variable RC , (Result
Code), will get set to a value. A value of 0 means that there was no
problems and the script terminated normally, anything other than 0 means
there was a problem. Obviously a number isn't going to impart much
information, that's where the dopus error command is useful, it will
provide a short message telling you what's wrong.
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