Hadoop fs base command

The basic operation of the command hdfs

In hdfs, the path need to use absolute paths

1. Review the root directory

    hadoop fs -ls /

2. recursive view all files and folders -lsr equivalent to -ls -R

    hadoop fs -lsr /

3. Create a folder

    hadoop fs -mkidr /hello

4. Create a multi-level folder

    hadoop fs -mkdir -p /good/good

5. Create a file

    hadoop fs -touchz /hello/test.txt

6. move or rename a file, is not present when hello1 rename, move otherwise hello -> hello1

    hadoop fs -mv /hello /hello1

7. Copy to copy the folder hello1 to wo

    hadoop fs -cp /hello1 /wo

8. Statistics size of each file under the directory wo

    hadoop fs -du /wo

9. Statistical wo directory file [Folder] number

    hadoop fs -count /wo

10. Review the contents of the file

    hadoop fs -cat /hello/test.txt
    hadoop fs -text /hello/test.txt

11. upload a file, the file upload the current file to the root directory -copyFromLocal the same -put

    hadoop fs -put hadoop-2.7.7.tar.gz /
    

12. Download

    hadoop fs -get /hadoop-2.7.7.tar.gz /opt/test

13. Delete, -rmr equivalent to -rm -r

    hadoop fs -rm /hadoop-2.7.7.tar.gz    #删除文件
    hadoop fs -rmr /wo/hello2    #删除文件或文件夹
    hadoop fs -rm -r -f /other    #强制删除

14. View space

    hadoop fs -df /