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Date: Mon, 5 Nov 2012 19:06:12 +0000 (UTC)
From: "Andy Isaacson (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <1845667750.69892.1352142372485.JavaMail.jiratomcat@arcas>
Subject: [jira] [Commented] (HDFS-1331) dfs -test should work like /bin/test
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    [ https://issues.apache.org/jira/browse/HDFS-1331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490831#comment-13490831 ] 

Andy Isaacson commented on HDFS-1331:
-------------------------------------

bq. follow the pattern for the usage of other commands

There's a lot of inconsistency, but I figure the {{-ls}} usage message is a good example to follow. I cleaned up the rest of {{Test.java}}s usage message too while in there.
                
> dfs -test should work like /bin/test
> ------------------------------------
>
>                 Key: HDFS-1331
>                 URL: https://issues.apache.org/jira/browse/HDFS-1331
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: tools
>    Affects Versions: 0.20.2, 3.0.0, 2.0.2-alpha
>            Reporter: Allen Wittenauer
>            Assignee: Andy Isaacson
>            Priority: Minor
>         Attachments: hdfs1331-2.txt, hdfs1331-3.txt, hdfs1331.txt, hdfs1331-with-hadoop8994.txt
>
>
> hadoop dfs -test doesn't act like its shell equivalent, making it difficult to actually use if you are used to the real test command:
> hadoop:
> $hadoop dfs -test -d /nonexist; echo $?
> test: File does not exist: /nonexist
> 255
> shell:
> $ test -d /nonexist; echo $?
> 1
> a) Why is it spitting out a message? Even so, why is it saying file instead of directory when I used -d?
> b) Why is the return code 255? I realize this is documented as '0' if true.  But docs basically say the value is undefined if it isn't.
> c) where is -f?
> d) Why is empty -z instead of -s ?  Was it a misunderstanding of the man page?

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