1.檢視hdfs中的目錄資訊
hadoop fs -ls /hdfs路徑
2.上傳檔案到hdfs中
hadoop fs -put /本地檔案 /aaa
本地檔案 /hdfs路徑 ## copyfromlocal等價於 put
hadoop fs -movefromlocal /本地檔案 /hdfs路徑 ## 跟copyfromlocal的區別是：從本地移動到hdfs中
到客戶端本地磁碟
hadoop fs -get /hdfs中的路徑 /本地磁碟目錄
hadoop fs -copytolocal /hdfs中的路徑 /本地磁碟路徑 ## 跟get等價
hadoop fs -movetolocal /hdfs路徑 /本地路徑 ## 從hdfs中移動到本地
4.在hdfs中建立資料夾
hadoop fs -mkdir -p /aaa/***
5.移動hdfs中的檔案（更名）
hadoop fs -mv /hdfs的路徑 /hdfs的另乙個路徑
6.刪除hdfs中的檔案或資料夾
hadoop fs -rm -r /aaa
7.修改檔案的許可權
hadoop fs -chown user:group /aaa
hadoop fs -chmod 700 /aaa
8.追加內容到已存在的檔案
9.顯示文字檔案的內容
hadoop fs -cat /hdfs中的檔案
hadoop fs -tail /hdfs中的檔案
補充：hdfs命令列客戶端的所有命令列表
usage: hadoop fs [generic options]
[-cat [-ignorecrc] ...]
[-checksum ...]
[-chgrp [-r] group path...]
[-chmod [-r] path...]
[-chown [-r] [owner][:[group]] path...]
[-copyfromlocal [-f] [-p] [-l] [-d] ... ]
[-copytolocal [-f] [-p] [-ignorecrc] [-crc] ... ]
[-count [-q] [-h] [-v] [-t ] [-u] [-x] ...]
[-cp [-f] [-p | -p[topax]] [-d] ... ]
[-createsnapshot ]
[-deletesnapshot ]
[-df [-h] [...]]
[-du [-s] [-h] [-x] ...]
[-expunge]
[-find ... ...]
[-get [-f] [-p] [-ignorecrc] [-crc] ... ]
[-getfacl [-r] ]
[-getfattr [-r] [-e en] ]
[-getmerge [-nl] [-skip-empty-file] ]
[-help [cmd ...]]
[-ls [-c] [-d] [-h] [-q] [-r] [-t] [-s] [-r] [-u] [...]]
[-mkdir [-p] ...]
[-movefromlocal ... ]
[-movetolocal ]
[-mv ... ]
[-put [-f] [-p] [-l] [-d] ... ]
[-renamesnapshot ]
[-rm [-f] [-r|-r] [-skiptrash] [-safely] ...]
[-rmdir [--ignore-fail-on-non-empty] ...]
[-setfacl [-r] [ ]|[--set ]]
[-setfattr ]
[-setrep [-r] [-w] ...]
[-stat [format] ...]
[-tail [-f] ]
[-test -[defsz] ]
[-text [-ignorecrc] ...]
[-touchz ...]
[-truncate [-w] ...]
[-usage [cmd ...]]
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