Shulou(Shulou.com)05/31 Report--

Editor to share with you what HDFS commonly used shell has, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

HDFS:

View the file:

Hadoop fs-ls /

-r: recursive query

-h: view siz

Upload files:

Hadoop fs-copyFromLocal ~ / tmp/hosts / in.log

View the content:

Hadoop fs-cat / in.log

= = > pipes:

Hadoop fs-cat / in.log | more

Download the file:

Hadoop fs-copyToLocal / in.log ~ / tmp/

Statistics on the number of files:

Hadoop fs-count /

Number of files, number of folders, size

Delete the file:

Hadoop fs-rmr / in.log

Copy the file:

Hadoop fs-cp / Source / destination

Download:

Hadoop fs-get / in.log ~ / tmp/in.log.2

Create a directory:

Hadoop fs-mkdir / tmp

Cut a file locally:

Hadoop fs-moveFromLocal / /

Upload:

Hadoop fs-put

Delete the file:

Hadoop fs-rm /

-r: delete the directory

View the file:

Hadoop fs-tail / in.log: check the next few lines

Hadoop fs-text / in.log: equivalent to cat

Change permissions:

Hadoop fs-chmod axix / in.log

-R: recursion

Hadoop fs-chown supergroup in.log

Modify user

Hadoop fs-chgrp root / in.log

Modify and reorganize

Hdfs dfs-ls-R /

The above is all the contents of the article "what are the shell commonly used in HDFS?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.