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https://issues.apache.org/jira/browse/KAFKA-1292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sönke Liebau resolved KAFKA-1292.
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Resolution: Fixed
This has been implemented by now, I do believe within the linked ticket.
> Command-line tools should print what they do as part of their usage command
> ---------------------------------------------------------------------------
>
> Key: KAFKA-1292
> URL: https://issues.apache.org/jira/browse/KAFKA-1292
> Project: Kafka
> Issue Type: Improvement
> Reporter: Jay Kreps
> Priority: Major
> Labels: usability
>
> It would be nice if you could get an explanation for each tool by running the
> command with no arguments. Something like
> bin/kafka-preferred-replica-election.sh is a little scary so it would be nice
> to have it self-describe:
> > bin/kafka-preferred-replica-election.sh
> This command attempts to return leadership to the preferred replicas (if they
> are alive) from whomever is currently the leader).
> Option Description
>
> ------ -----------
>
> --alter Alter the configuration for the topic.
> ...
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