[jira] [Created] (SUBMARINE-57) Add more elaborate message if submarine command is not recognized

[Szilard Nemeth (JIRA)]

Szilard Nemeth created SUBMARINE-57:
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             Summary: Add more elaborate message if submarine command is not 
recognized
                 Key: SUBMARINE-57
                 URL: https://issues.apache.org/jira/browse/SUBMARINE-57
             Project: Hadoop Submarine
          Issue Type: Improvement
            Reporter: Szilard Nemeth






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