src/docs/src/documentation/content/xdocs/hdfs_shell.xml - hadoop - Git at Google

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 <!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V2.0//EN" "http://forrest.apache.org/dtd/document-v20.dtd">
 <document>
 	<header>
 		<title>Hadoop FS Shell Guide</title>
 	</header>
 	<body>
 		<section>
 			<title> FS Shell </title>
 			<p>
       The FileSystem (FS) shell is invoked by
       <code>bin/hadoop fs &lt;args&gt;</code>.
       All the FS shell commands take path URIs as arguments. The URI
       format is <em>scheme://autority/path</em>. For HDFS the scheme
       is <em>hdfs</em>, and for the local filesystem the scheme
       is <em>file</em>. The scheme and authority are optional. If not
       specified, the default scheme specified in the configuration is
       used. An HDFS file or directory such as <em>/parent/child</em>
       can be specified as <em>hdfs://namenodehost/parent/child</em> or
       simply as <em>/parent/child</em> (given that your configuration
       is set to point to <em>hdfs://namenodehost</em>). Most of the
       commands in FS shell behave like corresponding Unix
       commands. Differences are described with each of the
       commands. Error information is sent to <em>stderr</em> and the
       output is sent to <em>stdout</em>.
   </p>
 		<section>
 			<title> cat </title>
 			<p>
 				<code>Usage: hadoop fs -cat URI [URI &#x2026;]</code>
 			</p>
 			<p>
 		   Copies source paths to <em>stdout</em>.
 		   </p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code> hadoop fs -cat hdfs://nn1.example.com/file1 hdfs://nn2.example.com/file2
 		   </code>
 				</li>
 				<li>
 					<code>hadoop fs -cat file:///file3 /user/hadoop/file4 </code>
 				</li>
 			</ul>
 			<p>Exit Code:<br/>
 		   <code> Returns 0 on success and -1 on error. </code></p>
 		</section>
 		<section>
 			<title> chgrp </title>
 			<p>
 				<code>Usage: hadoop fs -chgrp [-R] GROUP URI [URI &#x2026;]</code>
 			</p>
 			<p>
 	    Change group association of files. With <code>-R</code>, make the change recursively through the directory structure. The user must be the owner of files, or else a super-user. Additional information is in the <a href="hdfs_permissions_guide.html">HDFS Admin Guide: Permissions</a>.
 	    </p>
 		</section>
 		<section>
 			<title> chmod </title>
 			<p>
 				<code>Usage: hadoop fs -chmod [-R] &lt;MODE[,MODE]... | OCTALMODE&gt; URI [URI &#x2026;]</code>
 			</p>
 			<p>
 	    Change the permissions of files. With <code>-R</code>, make the change recursively through the directory structure. The user must be the owner of the file, or else a super-user. Additional information is in the <a href="hdfs_permissions_guide.html">HDFS Admin Guide: Permissions</a>.
 	    </p>
 		</section>
 		<section>
 			<title> chown </title>
 			<p>
 				<code>Usage: hadoop fs -chown [-R] [OWNER][:[GROUP]] URI [URI ]</code>
 			</p>
 			<p>
 	    Change the owner of files. With <code>-R</code>, make the change recursively through the directory structure. The user must be a super-user. Additional information is in the <a href="hdfs_permissions_guide.html">HDFS Admin Guide: Permissions</a>.
 	    </p>
 		</section>
 		<section>
 			<title>copyFromLocal</title>
 			<p>
 				<code>Usage: hadoop fs -copyFromLocal &lt;localsrc&gt; URI</code>
 			</p>
 			<p>Similar to <a href="#put"><strong>put</strong></a> command, except that the source is restricted to a local file reference. </p>
 		</section>
 		<section>
 			<title> copyToLocal</title>
 			<p>
 				<code>Usage: hadoop fs -copyToLocal [-ignorecrc] [-crc] URI &lt;localdst&gt;</code>
 			</p>
 			<p> Similar to <a href="#get"><strong>get</strong></a> command, except that the destination is restricted to a local file reference.</p>
 		</section>
 		<section>
 			<title> count </title>
 			<p>
 				<code>Usage: hadoop fs -count [-q]  &lt;paths&gt;</code>
 			</p>
 			<p>
 				Count the number of directories, files and bytes under the paths that match the specified file pattern. The output columns are:<br/><code>DIR_COUNT, FILE_COUNT, CONTENT_SIZE FILE_NAME</code>. <br/><br/>The output columns with <code>-q</code> are:<br/><code>QUOTA, REMAINING_QUATA, SPACE_QUOTA, REMAINING_SPACE_QUOTA, DIR_COUNT, FILE_COUNT, CONTENT_SIZE, FILE_NAME</code>.
 		   </p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code> hadoop fs -count hdfs://nn1.example.com/file1 hdfs://nn2.example.com/file2
 		   </code>
 				</li>
 				<li>
 					<code> hadoop fs -count -q hdfs://nn1.example.com/file1
 		   </code>
 				</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code> Returns 0 on success and -1 on error.</code>
 			</p>
 		</section>
 		<section>
 			<title> cp </title>
 			<p>
 				<code>Usage: hadoop fs -cp URI [URI &#x2026;] &lt;dest&gt;</code>
 			</p>
 			<p>
 	    Copy files from source to destination. This command allows multiple sources as well in which case the destination must be a directory.
 	    <br/>
 	    Example:</p>
 			<ul>
 				<li>
 					<code> hadoop fs -cp /user/hadoop/file1 /user/hadoop/file2</code>
 				</li>
 				<li>
 					<code> hadoop fs -cp /user/hadoop/file1 /user/hadoop/file2 /user/hadoop/dir </code>
 				</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code> Returns 0 on success and -1 on error.</code>
 			</p>
 		</section>
 		<section>
 			<title>du</title>
 			<p>
 				<code>Usage: hadoop fs -du 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/>
 	     Example:<br/><code>hadoop fs -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>
 		<section>
 			<title> dus </title>
 			<p>
 				<code>Usage: hadoop fs -dus &lt;args&gt;</code>
 			</p>
 			<p>
 	    Displays a summary of file lengths.
 	   </p>
 		</section>
 		<section>
 			<title> expunge </title>
 			<p>
 				<code>Usage: hadoop fs -expunge</code>
 			</p>
 			<p>Empty the Trash. Refer to <a href="hdfs_design.html">HDFS Architecture</a> for more information on Trash feature.
 	   </p>
 		</section>
 		<section>
 			<title> get </title>
 			<p>
 				<code>Usage: hadoop fs -get [-ignorecrc] [-crc] &lt;src&gt; &lt;localdst&gt;</code>
 				<br/>
 			</p>
 			<p>
 	   Copy files to the local file system. Files that fail the CRC check may be copied with the
 	   <code>-ignorecrc</code> option. Files and CRCs may be copied using the
 	   <code>-crc</code> option.
 	  </p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code> hadoop fs -get /user/hadoop/file localfile </code>
 				</li>
 				<li>
 					<code> hadoop fs -get hdfs://nn.example.com/user/hadoop/file localfile</code>
 				</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code> Returns 0 on success and -1 on error. </code>
 			</p>
 		</section>
 		<section>
 			<title> getmerge </title>
 			<p>
 				<code>Usage: hadoop fs -getmerge &lt;src&gt; &lt;localdst&gt; [addnl]</code>
 			</p>
 			<p>
 	  Takes a source directory and a destination file as input and concatenates files in src into the destination local file. Optionally <code>addnl</code> can be set to enable adding a newline character at the end of each file.
 	  </p>
 		</section>
 		<section>
 			<title> ls </title>
 			<p>
 				<code>Usage: hadoop fs -ls &lt;args&gt;</code>
 			</p>
 			<p>
 		 For a file returns stat on the file with the following format:<br/><code>filename &lt;number of replicas&gt; filesize modification_date modification_time permissions userid groupid</code><br/>
 	         For a directory it returns list of its direct children as in unix.
 	         A directory is listed as: <br/><code>dirname &lt;dir&gt; modification_time modification_time permissions userid groupid</code><br/>
 	         Example:<br/><code>hadoop fs -ls /user/hadoop/file1 /user/hadoop/file2 hdfs://nn.example.com/user/hadoop/dir1 /nonexistentfile</code><br/>
 	         Exit Code:<br/><code> Returns 0 on success and -1 on error. </code><br/></p>
 		</section>
 		<section>
 			<title>lsr</title>
 			<p><code>Usage: hadoop fs -lsr &lt;args&gt;</code><br/>
 	      Recursive version of <code>ls</code>. Similar to Unix <code>ls -R</code>.
 	      </p>
 		</section>
 		<section>
 			<title> mkdir </title>
 			<p>
 				<code>Usage: hadoop fs -mkdir &lt;paths&gt;</code>
 				<br/>
 			</p>
 			<p>
 	   Takes path uri's as argument and creates directories. The behavior is much like unix mkdir -p creating parent directories along the path.
 	  </p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code>hadoop fs -mkdir /user/hadoop/dir1 /user/hadoop/dir2 </code>
 				</li>
 				<li>
 					<code>hadoop fs -mkdir hdfs://nn1.example.com/user/hadoop/dir hdfs://nn2.example.com/user/hadoop/dir
 	  </code>
 				</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code>Returns 0 on success and -1 on error.</code>
 			</p>
 		</section>
 		<section>
 			<title> moveFromLocal </title>
 			<p>
 				<code>Usage: dfs -moveFromLocal &lt;localsrc&gt; &lt;dst&gt;</code>
 			</p>
 			<p>Similar to <a href="#put"><strong>put</strong></a> command, except that the source <code>localsrc</code> is deleted after it's copied. </p>
 		</section>
 		<section>
 			<title> moveToLocal</title>
 			<p>
 				<code>Usage: hadoop fs -moveToLocal [-crc] &lt;src&gt; &lt;dst&gt;</code>
 			</p>
 			<p>Displays a "Not implemented yet" message.</p>
 		</section>
 		<section>
 			<title> mv </title>
 			<p>
 				<code>Usage: hadoop fs -mv URI [URI &#x2026;] &lt;dest&gt;</code>
 			</p>
 			<p>
 	    Moves files from source to destination. This command allows multiple sources as well in which case the destination needs to be a directory. Moving files across filesystems is not permitted.
 	    <br/>
 	    Example:
 	    </p>
 			<ul>
 				<li>
 					<code> hadoop fs -mv /user/hadoop/file1 /user/hadoop/file2</code>
 				</li>
 				<li>
 					<code> hadoop fs -mv hdfs://nn.example.com/file1 hdfs://nn.example.com/file2 hdfs://nn.example.com/file3 hdfs://nn.example.com/dir1</code>
 				</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code> Returns 0 on success and -1 on error.</code>
 			</p>
 		</section>
 		<section>
 			<title> put </title>
 			<p>
 				<code>Usage: hadoop fs -put &lt;localsrc&gt; ... &lt;dst&gt;</code>
 			</p>
 			<p>Copy single src, or multiple srcs from local file system to the destination filesystem. Also reads input from stdin and writes to destination filesystem.<br/>
 	   </p>
 			<ul>
 				<li>
 					<code> hadoop fs -put localfile /user/hadoop/hadoopfile</code>
 				</li>
 				<li>
 					<code> hadoop fs -put localfile1 localfile2 /user/hadoop/hadoopdir</code>
 				</li>
 				<li>
 					<code> hadoop fs -put localfile hdfs://nn.example.com/hadoop/hadoopfile</code>
 				</li>
 				<li><code>hadoop fs -put - hdfs://nn.example.com/hadoop/hadoopfile</code><br/>Reads the input from stdin.</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code> Returns 0 on success and -1 on error. </code>
 			</p>
 		</section>
 		<section>
 			<title> rm </title>
 			<p>
 				<code>Usage: hadoop fs -rm URI [URI &#x2026;] </code>
 			</p>
 			<p>
 	   Delete files specified as args. Only deletes non empty directory and files. Refer to rmr for recursive deletes.<br/>
 	   Example:
 	   </p>
 			<ul>
 				<li>
 					<code> hadoop fs -rm hdfs://nn.example.com/file /user/hadoop/emptydir </code>
 				</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code> Returns 0 on success and -1 on error.</code>
 			</p>
 		</section>
 		<section>
 			<title> rmr </title>
 			<p>
 				<code>Usage: hadoop fs -rmr URI [URI &#x2026;]</code>
 			</p>
 			<p>Recursive version of delete.<br/>
 	   Example:
 	   </p>
 			<ul>
 				<li>
 					<code> hadoop fs -rmr /user/hadoop/dir </code>
 				</li>
 				<li>
 					<code> hadoop fs -rmr hdfs://nn.example.com/user/hadoop/dir </code>
 				</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code> Returns 0 on success and -1 on error. </code>
 			</p>
 		</section>
 		<section>
 			<title> setrep </title>
 			<p>
 				<code>Usage: hadoop fs -setrep [-R] &lt;path&gt;</code>
 			</p>
 			<p>
 	   Changes the replication factor of a file. -R option is for recursively increasing the replication factor of files within a directory.
 	  </p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code> hadoop fs -setrep -w 3 -R /user/hadoop/dir1 </code>
 				</li>
 			</ul>
 			<p>Exit Code:</p>
 			<p>
 				<code>Returns 0 on success and -1 on error. </code>
 			</p>
 		</section>
 		<section>
 			<title> stat </title>
 			<p>
 				<code>Usage: hadoop fs -stat URI [URI &#x2026;]</code>
 			</p>
 			<p>
 	   Returns the stat information on the path.
 	   </p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code> hadoop fs -stat path </code>
 				</li>
 			</ul>
 			<p>Exit Code:<br/>
 	   <code> Returns 0 on success and -1 on error.</code></p>
 		</section>
 		<section>
 			<title> tail </title>
 			<p>
 				<code>Usage: hadoop fs -tail [-f] URI </code>
 			</p>
 			<p>
 	   Displays last kilobyte of the file to stdout. -f option can be used as in Unix.
 	   </p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code> hadoop fs -tail pathname </code>
 				</li>
 			</ul>
 			<p>Exit Code: <br/>
 	   <code> Returns 0 on success and -1 on error.</code></p>
 		</section>
 		<section>
 			<title> test </title>
 			<p>
 				<code>Usage: hadoop fs -test -[ezd] URI</code>
 			</p>
 			<p>
 	   Options: <br/>
 	   -e check to see if the file exists. Return 0 if true. <br/>
 	   -z check to see if the file is zero length. Return 0 if true <br/>
 	   -d check return 1 if the path is directory else return 0. <br/></p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code> hadoop fs -test -e filename </code>
 				</li>
 			</ul>
 		</section>
 		<section>
 			<title> text </title>
 			<p>
 				<code>Usage: hadoop fs -text &lt;src&gt;</code>
 				<br/>
 			</p>
 			<p>
 	   Takes a source file and outputs the file in text format. The allowed formats are zip and TextRecordInputStream.
 	  </p>
 		</section>
 		<section>
 			<title> touchz </title>
 			<p>
 				<code>Usage: hadoop fs -touchz URI [URI &#x2026;]</code>
 				<br/>
 			</p>
 			<p>
 	   Create a file of zero length.
 	   </p>
 			<p>Example:</p>
 			<ul>
 				<li>
 					<code> hadoop -touchz pathname </code>
 				</li>
 			</ul>
 			<p>Exit Code:<br/>
 	   <code> Returns 0 on success and -1 on error.</code></p>
 		</section>
         </section>
 	</body>
 </document>
	<?xml version="1.0"?>
	<!--
	Copyright 2002-2004 The Apache Software Foundation

	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.
	-->
	<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V2.0//EN" "http://forrest.apache.org/dtd/document-v20.dtd">
	<document>
	<header>
	<title>Hadoop FS Shell Guide</title>
	</header>
	<body>
	<section>
	<title> FS Shell </title>
	<p>
	The FileSystem (FS) shell is invoked by
	<code>bin/hadoop fs <args></code>.
	All the FS shell commands take path URIs as arguments. The URI
	format is <em>scheme://autority/path</em>. For HDFS the scheme
	is <em>hdfs</em>, and for the local filesystem the scheme
	is <em>file</em>. The scheme and authority are optional. If not
	specified, the default scheme specified in the configuration is
	used. An HDFS file or directory such as <em>/parent/child</em>
	can be specified as <em>hdfs://namenodehost/parent/child</em> or
	simply as <em>/parent/child</em> (given that your configuration
	is set to point to <em>hdfs://namenodehost</em>). Most of the
	commands in FS shell behave like corresponding Unix
	commands. Differences are described with each of the
	commands. Error information is sent to <em>stderr</em> and the
	output is sent to <em>stdout</em>.
	</p>
	<section>
	<title> cat </title>
	<p>
	<code>Usage: hadoop fs -cat URI [URI …]</code>
	</p>
	<p>
	Copies source paths to <em>stdout</em>.
	</p>
	<p>Example:</p>
	<ul>
	<li>
	<code> hadoop fs -cat hdfs://nn1.example.com/file1 hdfs://nn2.example.com/file2
	</code>
	</li>
	<li>
	<code>hadoop fs -cat file:///file3 /user/hadoop/file4 </code>
	</li>
	</ul>
	<p>Exit Code:<br/>
	<code> Returns 0 on success and -1 on error. </code></p>
	</section>
	<section>
	<title> chgrp </title>
	<p>
	<code>Usage: hadoop fs -chgrp [-R] GROUP URI [URI …]</code>
	</p>
	<p>
	Change group association of files. With <code>-R</code>, make the change recursively through the directory structure. The user must be the owner of files, or else a super-user. Additional information is in the <a href="hdfs_permissions_guide.html">HDFS Admin Guide: Permissions</a>.
	</p>
	</section>
	<section>
	<title> chmod </title>
	<p>
	<code>Usage: hadoop fs -chmod [-R] <MODE[,MODE]... \| OCTALMODE> URI [URI …]</code>
	</p>
	<p>
	Change the permissions of files. With <code>-R</code>, make the change recursively through the directory structure. The user must be the owner of the file, or else a super-user. Additional information is in the <a href="hdfs_permissions_guide.html">HDFS Admin Guide: Permissions</a>.
	</p>
	</section>
	<section>
	<title> chown </title>
	<p>
	<code>Usage: hadoop fs -chown [-R] [OWNER][:[GROUP]] URI [URI ]</code>
	</p>
	<p>
	Change the owner of files. With <code>-R</code>, make the change recursively through the directory structure. The user must be a super-user. Additional information is in the <a href="hdfs_permissions_guide.html">HDFS Admin Guide: Permissions</a>.
	</p>
	</section>
	<section>
	<title>copyFromLocal</title>
	<p>
	<code>Usage: hadoop fs -copyFromLocal <localsrc> URI</code>
	</p>
	<p>Similar to <a href="#put"><strong>put</strong></a> command, except that the source is restricted to a local file reference. </p>
	</section>
	<section>
	<title> copyToLocal</title>
	<p>
	<code>Usage: hadoop fs -copyToLocal [-ignorecrc] [-crc] URI <localdst></code>
	</p>
	<p> Similar to <a href="#get"><strong>get</strong></a> command, except that the destination is restricted to a local file reference.</p>
	</section>
	<section>
	<title> count </title>
	<p>
	<code>Usage: hadoop fs -count [-q] <paths></code>
	</p>
	<p>
	Count the number of directories, files and bytes under the paths that match the specified file pattern. The output columns are:<br/><code>DIR_COUNT, FILE_COUNT, CONTENT_SIZE FILE_NAME</code>. <br/><br/>The output columns with <code>-q</code> are:<br/><code>QUOTA, REMAINING_QUATA, SPACE_QUOTA, REMAINING_SPACE_QUOTA, DIR_COUNT, FILE_COUNT, CONTENT_SIZE, FILE_NAME</code>.
	</p>
	<p>Example:</p>
	<ul>
	<li>
	<code> hadoop fs -count hdfs://nn1.example.com/file1 hdfs://nn2.example.com/file2
	</code>
	</li>
	<li>
	<code> hadoop fs -count -q hdfs://nn1.example.com/file1
	</code>
	</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code> Returns 0 on success and -1 on error.</code>
	</p>
	</section>
	<section>
	<title> cp </title>
	<p>
	<code>Usage: hadoop fs -cp URI [URI …] <dest></code>
	</p>
	<p>
	Copy files from source to destination. This command allows multiple sources as well in which case the destination must be a directory.
	<br/>
	Example:</p>
	<ul>
	<li>
	<code> hadoop fs -cp /user/hadoop/file1 /user/hadoop/file2</code>
	</li>
	<li>
	<code> hadoop fs -cp /user/hadoop/file1 /user/hadoop/file2 /user/hadoop/dir </code>
	</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code> Returns 0 on success and -1 on error.</code>
	</p>
	</section>
	<section>
	<title>du</title>
	<p>
	<code>Usage: hadoop fs -du URI [URI …]</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/>
	Example:<br/><code>hadoop fs -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>
	<section>
	<title> dus </title>
	<p>
	<code>Usage: hadoop fs -dus <args></code>
	</p>
	<p>
	Displays a summary of file lengths.
	</p>
	</section>
	<section>
	<title> expunge </title>
	<p>
	<code>Usage: hadoop fs -expunge</code>
	</p>
	<p>Empty the Trash. Refer to <a href="hdfs_design.html">HDFS Architecture</a> for more information on Trash feature.
	</p>
	</section>
	<section>
	<title> get </title>
	<p>
	<code>Usage: hadoop fs -get [-ignorecrc] [-crc] <src> <localdst></code>
	<br/>
	</p>
	<p>
	Copy files to the local file system. Files that fail the CRC check may be copied with the
	<code>-ignorecrc</code> option. Files and CRCs may be copied using the
	<code>-crc</code> option.
	</p>
	<p>Example:</p>
	<ul>
	<li>
	<code> hadoop fs -get /user/hadoop/file localfile </code>
	</li>
	<li>
	<code> hadoop fs -get hdfs://nn.example.com/user/hadoop/file localfile</code>
	</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code> Returns 0 on success and -1 on error. </code>
	</p>
	</section>
	<section>
	<title> getmerge </title>
	<p>
	<code>Usage: hadoop fs -getmerge <src> <localdst> [addnl]</code>
	</p>
	<p>
	Takes a source directory and a destination file as input and concatenates files in src into the destination local file. Optionally <code>addnl</code> can be set to enable adding a newline character at the end of each file.
	</p>
	</section>
	<section>
	<title> ls </title>
	<p>
	<code>Usage: hadoop fs -ls <args></code>
	</p>
	<p>
	For a file returns stat on the file with the following format:<br/><code>filename <number of replicas> filesize modification_date modification_time permissions userid groupid</code><br/>
	For a directory it returns list of its direct children as in unix.
	A directory is listed as: <br/><code>dirname <dir> modification_time modification_time permissions userid groupid</code><br/>
	Example:<br/><code>hadoop fs -ls /user/hadoop/file1 /user/hadoop/file2 hdfs://nn.example.com/user/hadoop/dir1 /nonexistentfile</code><br/>
	Exit Code:<br/><code> Returns 0 on success and -1 on error. </code><br/></p>
	</section>
	<section>
	<title>lsr</title>
	<p><code>Usage: hadoop fs -lsr <args></code><br/>
	Recursive version of <code>ls</code>. Similar to Unix <code>ls -R</code>.
	</p>
	</section>
	<section>
	<title> mkdir </title>
	<p>
	<code>Usage: hadoop fs -mkdir <paths></code>
	<br/>
	</p>
	<p>
	Takes path uri's as argument and creates directories. The behavior is much like unix mkdir -p creating parent directories along the path.
	</p>
	<p>Example:</p>
	<ul>
	<li>
	<code>hadoop fs -mkdir /user/hadoop/dir1 /user/hadoop/dir2 </code>
	</li>
	<li>
	<code>hadoop fs -mkdir hdfs://nn1.example.com/user/hadoop/dir hdfs://nn2.example.com/user/hadoop/dir
	</code>
	</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code>Returns 0 on success and -1 on error.</code>
	</p>
	</section>
	<section>
	<title> moveFromLocal </title>
	<p>
	<code>Usage: dfs -moveFromLocal <localsrc> <dst></code>
	</p>
	<p>Similar to <a href="#put"><strong>put</strong></a> command, except that the source <code>localsrc</code> is deleted after it's copied. </p>
	</section>
	<section>
	<title> moveToLocal</title>
	<p>
	<code>Usage: hadoop fs -moveToLocal [-crc] <src> <dst></code>
	</p>
	<p>Displays a "Not implemented yet" message.</p>
	</section>
	<section>
	<title> mv </title>
	<p>
	<code>Usage: hadoop fs -mv URI [URI …] <dest></code>
	</p>
	<p>
	Moves files from source to destination. This command allows multiple sources as well in which case the destination needs to be a directory. Moving files across filesystems is not permitted.
	<br/>
	Example:
	</p>
	<ul>
	<li>
	<code> hadoop fs -mv /user/hadoop/file1 /user/hadoop/file2</code>
	</li>
	<li>
	<code> hadoop fs -mv hdfs://nn.example.com/file1 hdfs://nn.example.com/file2 hdfs://nn.example.com/file3 hdfs://nn.example.com/dir1</code>
	</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code> Returns 0 on success and -1 on error.</code>
	</p>
	</section>
	<section>
	<title> put </title>
	<p>
	<code>Usage: hadoop fs -put <localsrc> ... <dst></code>
	</p>
	<p>Copy single src, or multiple srcs from local file system to the destination filesystem. Also reads input from stdin and writes to destination filesystem.<br/>
	</p>
	<ul>
	<li>
	<code> hadoop fs -put localfile /user/hadoop/hadoopfile</code>
	</li>
	<li>
	<code> hadoop fs -put localfile1 localfile2 /user/hadoop/hadoopdir</code>
	</li>
	<li>
	<code> hadoop fs -put localfile hdfs://nn.example.com/hadoop/hadoopfile</code>
	</li>
	<li><code>hadoop fs -put - hdfs://nn.example.com/hadoop/hadoopfile</code><br/>Reads the input from stdin.</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code> Returns 0 on success and -1 on error. </code>
	</p>
	</section>
	<section>
	<title> rm </title>
	<p>
	<code>Usage: hadoop fs -rm URI [URI …] </code>
	</p>
	<p>
	Delete files specified as args. Only deletes non empty directory and files. Refer to rmr for recursive deletes.<br/>
	Example:
	</p>
	<ul>
	<li>
	<code> hadoop fs -rm hdfs://nn.example.com/file /user/hadoop/emptydir </code>
	</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code> Returns 0 on success and -1 on error.</code>
	</p>
	</section>
	<section>
	<title> rmr </title>
	<p>
	<code>Usage: hadoop fs -rmr URI [URI …]</code>
	</p>
	<p>Recursive version of delete.<br/>
	Example:
	</p>
	<ul>
	<li>
	<code> hadoop fs -rmr /user/hadoop/dir </code>
	</li>
	<li>
	<code> hadoop fs -rmr hdfs://nn.example.com/user/hadoop/dir </code>
	</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code> Returns 0 on success and -1 on error. </code>
	</p>
	</section>
	<section>
	<title> setrep </title>
	<p>
	<code>Usage: hadoop fs -setrep [-R] <path></code>
	</p>
	<p>
	Changes the replication factor of a file. -R option is for recursively increasing the replication factor of files within a directory.
	</p>
	<p>Example:</p>
	<ul>
	<li>
	<code> hadoop fs -setrep -w 3 -R /user/hadoop/dir1 </code>
	</li>
	</ul>
	<p>Exit Code:</p>
	<p>
	<code>Returns 0 on success and -1 on error. </code>
	</p>
	</section>
	<section>
	<title> stat </title>
	<p>
	<code>Usage: hadoop fs -stat URI [URI …]</code>
	</p>
	<p>
	Returns the stat information on the path.
	</p>
	<p>Example:</p>
	<ul>
	<li>
	<code> hadoop fs -stat path </code>
	</li>
	</ul>
	<p>Exit Code:<br/>
	<code> Returns 0 on success and -1 on error.</code></p>
	</section>
	<section>
	<title> tail </title>
	<p>
	<code>Usage: hadoop fs -tail [-f] URI </code>
	</p>
	<p>
	Displays last kilobyte of the file to stdout. -f option can be used as in Unix.
	</p>
	<p>Example:</p>
	<ul>
	<li>
	<code> hadoop fs -tail pathname </code>
	</li>
	</ul>
	<p>Exit Code: <br/>
	<code> Returns 0 on success and -1 on error.</code></p>
	</section>
	<section>
	<title> test </title>
	<p>
	<code>Usage: hadoop fs -test -[ezd] URI</code>
	</p>
	<p>
	Options: <br/>
	-e check to see if the file exists. Return 0 if true. <br/>
	-z check to see if the file is zero length. Return 0 if true <br/>
	-d check return 1 if the path is directory else return 0. <br/></p>
	<p>Example:</p>
	<ul>
	<li>
	<code> hadoop fs -test -e filename </code>
	</li>
	</ul>
	</section>
	<section>
	<title> text </title>
	<p>
	<code>Usage: hadoop fs -text <src></code>
	<br/>
	</p>
	<p>
	Takes a source file and outputs the file in text format. The allowed formats are zip and TextRecordInputStream.
	</p>
	</section>
	<section>
	<title> touchz </title>
	<p>
	<code>Usage: hadoop fs -touchz URI [URI …]</code>
	<br/>
	</p>
	<p>
	Create a file of zero length.
	</p>
	<p>Example:</p>
	<ul>
	<li>
	<code> hadoop -touchz pathname </code>
	</li>
	</ul>
	<p>Exit Code:<br/>
	<code> Returns 0 on success and -1 on error.</code></p>
	</section>
	</section>
	</body>
	</document>