[Big Data] Common commands for Hadoop file operations

There are some frequently used commands under Hadoop, through which it is very convenient to operate files on Hadoop.

0. View help

hadoop  -h

1. View the contents of the specified folder

hadoop fs -ls 文件文件夹

2. Open an existing file

hadoop fs -cat 文件地址 [ | more]
# []表示的是可选命令

3. Save local files to Hadoop

hadoop fs -put 本地文件地址 Hadoop文件夹

4. Download the files on Hadoop to a local folder

hadoop fs -get Hadoop文件夹 本地文件文件夹

5. Delete the specified file on Hadoop

hadoop fs -rm Hadoop文件地址

6. Delete the specified folder on Hadoop

hadoop fs -rm -r Hadoop文件文件夹

7. Create a new empty folder under the Hadoop specified folder

hadoop fs -mkdir Hadoop文件夹

8. Create a new empty file in the Hadoop specified folder

hadoop fs -touchz Hadoop文件

9. Rename a file on Hadoop

hadoop fs -mv Hadoop原文件地址 Hadoop新文件地址

10. Kill the executing Hadoop job

hadoop job -kill job-id