Common hadoop shell commands

To make it easier for you to review your memory, we will summarize the hadoop commands of today's experiment for later viewing.

 

Note: The following commands are performed in hadoop/bin.

 

1. hadoop FS-ls \-> View All the following directories.

 

2. hadoop FS-mkdir XXX-> Create the xxx folder on the hadoop file system.

 

3. hadoop FS-rmr xxx-> Delete the folder created on the file system

 

4. hadoop FS-Put/home/xuzhang/file1 XXX put the file into the created XXX directory

 

5. hadoop FS-CAT/input/data.txt, and open the data.txt file under input.

 

6. hadoop FS-Get input/data.txt/home/xuzhang: Down the files in HDFS to the specified directory.

 

7. Rename the hadoop FS-MV input/data.txt input/data1.txt File

 

 

In fact, the Common commands under hadoop are basically the same as those under Linux, that is, a FS is added.