Hadoop_ common commands (on hdfs)
hadoop fs all file systems can be used
hdfs dfs file system for only hdfs
- 1 - see all directories (folders) and documents
HDFS dfs -Ls /
- 2 - Create a directory hdfs file system (folder)
hdfs dfs -mkdir /test
- 3 - Create a file in the file system hdfs
hdfs dfs -touchz /words_1.txt
--4-- delete files in the file system hdfs
hdfs dfs -rm /words_1.txt
hdfs dfs -rf /words_1.txt
--5-- upload files to hdfs
hdfs dfs -put file name / path
Word frequency statistics for file operations
: wordcount
- 6 - contents of the file on the View hdfs
File name on hdfs dfs -cat / corresponding path
View upload path
Open to view the contents of the output file
- 7 - Download files from hdfs
hdfs dfs -get / file name / downloaded to the target path
--8-- recursive directory delete
hdfs dfs -rmr /test
--9-- View node process
jps
--10-- create a file
vi filename
