Hadoop DFS Common command line

* File operation

* View Catalog Files

* $ Hadoop DFS-LS/USER/CL

*

* Create a file directory

* $ Hadoop dfs-mkdir/user/cl/temp

*

* http://www.aliyun.com/zixun/aggregation/18137.html > Delete files

* $ Hadoop dfs-rm/user/cl/temp/a.txt

*

* Delete all files in directory and directory

* $ Hadoop dfs-rmr/user/cl/temp

*

* Upload File

* Upload a native/home/cl/local.txt to HDFs/user/cl/temp directory

* $ Hadoop dfs-put/home/cl/local.txt/user/cl/temp

*

* Download files

* Download hdfs.txt files from/user/cl/temp directory in HDFs to native/home/cl/

* $ Hadoop DFS-GET/USER/CL/TEMP/HDFS.TXT/HOME/CL

*

* View Files

* $ Hadoop dfs–cat/home/cl/hdfs.txt

*

* Job operation

* Submit MapReduce job, Hadoop all MapReduce job is a jar package

* $ Hadoop jar <local-jar-file> <java-class> <hdfs-input-file> <hdfs-output-dir>

* $ Hadoop jar Sandbox-mapred-0.0.20.jar Sandbox.mapred.wordcountjob/user/cl/input.dat/user/cl/outputdir

*

* Kill a running job

* Assuming job_id is: job_201207121738_0001

* $ Hadoop Job-kill job_201207121738_0001