Revature HDFS Commands

Question 1

hdfs fsck [location]

Answer 1

To check the health of our filesystem at a location

Question 2

hdfs dfs [-command]

Answer 2

Used to interact with hdfs

Question 3

hdfs dfs -ls [hdfs location]

Answer 3

List files/dir in hdfs location

Question 4

hdfs dfs -cat [hdfs file]

Answer 4

Print file contents to terminal

Question 5

hdfs dfs -copyFromLocal [local file] [hdfs location]

Answer 5

Copy file from local fs and save to hdfs location

Question 6

hdfs dfs -copyToLocal [hdfs file] [local location]

Answer 6

Copy file from hdfs and save to local location

Question 7

hdfs dfs -mkdir [hdfs location]

Answer 7

Creates directory at hdfs location

Question 8

hdfs dfs -rm [hdfs file]

Answer 8

Removes file in hdfs

Question 9

hdfs dfs -rmdir [hdfs location]

Answer 9

Removes directory in hdfs

Question 10

hdfs dfs -help

Answer 10

Lists common commands/options for use with interacting with hdfs

Question 11

hdfs dfs -put

Answer 11

Functionally same as copyFromLocal

Question 12

hdfs dfs -get

Answer 12

Functionally same as copyToLocal