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HADOOP-6375. Sync documentation for FsShell du with its implementation.

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Contributed by Todd Lipcon


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@883206 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Christopher Douglas 2009-11-23 00:59:29 +00:00
parent 09ec9c4ffc
commit f6990e06b4
3 changed files with 25 additions and 13 deletions
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3
CHANGES.txt
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@ -1162,6 +1162,9 @@ Release 0.21.0 - Unreleased
HADOOP-6347. run-test-core-fault-inject runs a test case twice if
-Dtestcase is set (cos)
HADOOP-6375. Sync documentation for FsShell du with its implementation.
(Todd Lipcon via cdouglas)
Release 0.20.2 - Unreleased
NEW FEATURES

12
src/docs/src/documentation/content/xdocs/file_system_shell.xml
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@ -191,10 +191,16 @@
<section>
<title>du</title>
<p>
<code>Usage: hdfs dfs -du URI [URI &#x2026;]</code>
<code>Usage: hdfs dfs -du [-s] [-h] URI [URI &#x2026;]</code>
</p>
<p>
Displays aggregate length of files contained in the directory or the length of a file in case its just a file.<br/>
Displays sizes of files and directories contained in the given directory or the length of a file in case its just a file.</p>
<p>Options:</p>
<ul>
<li>The <code>-s</code> option will result in an aggregate summary of file lengths being displayed, rather than the individual files.</li>
<li>The <code>-h</code> option will format file sizes in a &quot;human-readable&quot; fashion (e.g 64.0m instead of 67108864)</li>
</ul>
<p>
Example:<br/><code>hdfs dfs -du /user/hadoop/dir1 /user/hadoop/file1 hdfs://nn.example.com/user/hadoop/dir1</code><br/>
Exit Code:<br/><code> Returns 0 on success and -1 on error. </code><br/></p>
</section>
@ -206,7 +212,7 @@
<code>Usage: hdfs dfs -dus &lt;args&gt;</code>
</p>
<p>
Displays a summary of file lengths.
Displays a summary of file lengths. This is an alternate form of <code>hdfs dfs -du -s</code>.
</p>
</section>

23
src/java/org/apache/hadoop/fs/FsShell.java
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@ -1339,7 +1339,7 @@ private void printHelp(String cmd) {
String summary = "hadoop fs is the command to execute fs commands. " +
"The full syntax is: \n\n" +
"hadoop fs [-fs <local | file system URI>] [-conf <configuration file>]\n\t" +
"[-D <property=value>] [-ls <path>] [-lsr <path>] [-df [<path>]] [-du <path>]\n\t" +
"[-D <property=value>] [-ls <path>] [-lsr <path>] [-df [<path>]] [-du [-s] [-h] <path>]\n\t" +
"[-dus <path>] [-mv <src> <dst>] [-cp <src> <dst>] [-rm [-skipTrash] <src>]\n\t" +
"[-rmr [-skipTrash] <src>] [-put <localsrc> ... <dst>] [-copyFromLocal <localsrc> ... <dst>]\n\t" +
"[-moveFromLocal <localsrc> ... <dst>] [" +
@ -1389,17 +1389,20 @@ private void printHelp(String cmd) {
"\t\tIf the filesystem has multiple partitions, and no path to a particular partition\n"+
"\t\tis specified, then the status of the root partitions will be shown.\n";
String du = "-du <path>: \tShow the amount of space, in bytes, used by the files that \n" +
"\t\tmatch the specified file pattern. Equivalent to the unix\n" +
"\t\tcommand \"du -sb <path>/*\" in case of a directory, \n" +
"\t\tand to \"du -b <path>\" in case of a file.\n" +
String du = "-du [-s] [-h] <path>: \tShow the amount of space, in bytes, used by the files that \n" +
"\t\tmatch the specified file pattern. The following flags are optional:\n" +
"\t\t -s Rather than showing the size of each individual file that\n" +
"\t\t matches the pattern, shows the total (summary) size.\n" +
"\t\t -h Formats the sizes of files in a human-readable fashion\n" +
"\t\t rather than a number of bytes.\n" +
"\n" +
"\t\tNote that, even without the -s option, this only shows size summaries\n" +
"\t\tone level deep into a directory.\n" +
"\t\tThe output is in the form \n" +
"\t\t\tname(full path) size (in bytes)\n";
"\t\t\tsize\tname(full path)\n";
String dus = "-dus <path>: \tShow the amount of space, in bytes, used by the files that \n" +
"\t\tmatch the specified file pattern. Equivalent to the unix\n" +
"\t\tcommand \"du -sb\" The output is in the form \n" +
"\t\t\tname(full path) size (in bytes)\n";
"\t\tmatch the specified file pattern. This is equivalent to -du -s above.\n";
String mv = "-mv <src> <dst>: Move files that match the specified file pattern <src>\n" +
"\t\tto a destination <dst>. When moving multiple files, the \n" +
@ -1744,7 +1747,7 @@ private static void printUsage(String cmd) {
System.err.println(" [-ls <path>]");
System.err.println(" [-lsr <path>]");
System.err.println(" [-df [<path>]]");
System.err.println(" [-du <path>]");
System.err.println(" [-du [-s] [-h] <path>]");
System.err.println(" [-dus <path>]");
System.err.println(" [" + Count.USAGE + "]");
System.err.println(" [-mv <src> <dst>]");