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From "Jonathan Allen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4322) Tidy up fs -help
Date Tue, 18 Dec 2012 12:22:12 GMT
Jonathan Allen created HDFS-4322:
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             Summary: Tidy up fs -help
                 Key: HDFS-4322
                 URL: https://issues.apache.org/jira/browse/HDFS-4322
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Jonathan Allen
            Assignee: Jonathan Allen
            Priority: Minor


There are a number of issues with the current fs -help implementation that could do with tidying
up.

1) Running 'hadoop fs -help' displays the full detailed help for all commands.  This produces
a large amount of text and makes it hard to find what you're looking for.  Better functionality
would be:
- hadoop fs -usage : shows the basic usage information for all commands
- hadoop fs -help : shows usage and brief summary (couple of lines) for all commands
- hadoop fs -help <command> : shows full description of the specified command

2) Help text is hardcoded into each command class. This should be replaced by resource files
to allow internationalisation.

3) Line breaks are hardcoded into the help text. The help text should be auto-formatted at
display time.

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