HDFS is a hadoop file system, notice is a FUSE filesystem.
Thus, to manipulate files from local folder to HDFS you may need to apply some commands which are quite similar to linux CMD commands. if you know linux – this should be trivial, just notice the source and destination paths
HDFS commands list to copy / move / files
haoop fs -put <localsrc> <dest>
hadoop fs -get <src> <localdest>
hadoop fs –mkdir /path/directory_name
hadoop fs –ls /path/directory_name
hadoop fs -copyFromLocal <localsrc> <hdfs destination>
hadoop fs -copyToLocal <hdfs source> <localdst>
hadoop fs –cat /path_to_file_in_hdfs
hadoop fs -mv <src> <dest>