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https://issues.apache.org/jira/browse/HDDS-438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16613823#comment-16613823
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Dinesh Chitlangia commented on HDDS-438:
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[~elek] , [~anu] - Just to ensure this gets integrated successfully, please
wait till HDDS-456 is resolved, will fix it in couple hours.
> 'ozone oz' should print usage when command or sub-command is missing
> --------------------------------------------------------------------
>
> Key: HDDS-438
> URL: https://issues.apache.org/jira/browse/HDDS-438
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: Tools
> Reporter: Arpit Agarwal
> Assignee: Dinesh Chitlangia
> Priority: Major
> Labels: newbie
> Attachments: HDDS-438.001.patch, HDDS-438.002.patch
>
>
> When invoked without the command or sub-command, _ozone oz_ prints the
> following error:
> {code:java}
> $ ozone oz
> Please select a subcommand
> {code}
> and
> {code:java}
> $ ozone oz volume
> Please select a subcommand
> {code}
> For most familiar with Unix utilities it is obvious they should rerun the
> command with _--help._ However we can just print the usage instead to avoid
> guesswork
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