HDFS Command

HDFS command path

(HadoopRoot)
|- bin
|- sbin

There are 2 commands

• bin/hdfs dfs
• bin/hadoop fs

Basically same

This command is similar to the “hadoop fs”

command except that this only deals with the HDFS filesystem

Command Description	Format	Example
Show Help	hadoop fs -help	hadoop fs -help
Create new directory at the root level	hadoop fs -mkdir <dirname> hdfs dfs -mkdir -p <dirname>	hadoop fs -mkdir /test
Check files under specific directory like (ls)	hadoop fs -ls <dirname>	hadoop fs -ls /test
Copy file from local to HDFS	hadoop fs -copyFromLocal <localfile> <dst> hadoop fs -put <localfile> <dst>	hadoop fs -copyFromLocal ./etc/hadoop/core-site.xml /test
Copy file from HDFS to local	hadoop fs -copyToLocal <HDFS file> <dst> hadoop fs -get <HDFS file> <dst>	hadoop fs -copyToLocal /test/* ./fromhdfs
Delete file from HDFS	hadoop fs -rm -r <filename>	hadoop fs -rm -r ./test/test.txt