Shulou(Shulou.com)06/03 Report--

1. View help

Hadoop fs-help

2. Upload

Hadoop fs-put

Such as hadoop fs-put test.log /

3. View the contents of the file

Hadoop fs-cat

For example: hadoop fs-cat / test.log

4. View the list of files

Hadoop fs-ls /

5. Download the file

Hadoop fs-get

6. Create a directory: hadoop fs-mkdir

Such as hadoop fs-mkdir / myDir

7. Delete the file: hadoop fs-rm-r

8. Execute jar: such as the wordcount program that comes with hadoop.

Hadoop jar hadoop-mapreduce-examples-2.4.1.jar wordcount/ wordcount/in / wordcount/out

The execution result is as follows:

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