1. Usage: hadoop fs [generic options]
  2.     # 本地文件 append 到 hdfs 服务器
  3.     [-appendToFile <localsrc> ... <dst>]
  4.   # 查看内容
  5.     [-cat [-ignoreCrc] <src> ...]
  6.   # 更改组
  7.     [-chgrp [-R] GROUP PATH...]
  8.     [-chmod [-R] <MODE[,MODE]... | OCTALMODE> PATH...]
  9.   # 更改所有人
  10.     [-chown [-R] [OWNER][:[GROUP]] PATH...]
  11.   # 本地 copy 到 hdfs 
  12.     [-copyFromLocal [-f] [-p] [-l] <localsrc> ... <dst>]
  13.   # hdfs copy 到本地
  14.     [-copyToLocal [-p] [-ignoreCrc] [-crc] <src> ... <localdst>]
  15.   # 数量
  16.     [-count [-q] [-h] [-v] [-x] <path> ...]
  17.     [-cp [-f] [-p | -p[topax]] <src> ... <dst>]
  18.     [-df [-h] [<path> ...]]
  19.     [-du [-s] [-h] [-x] <path> ...]
  20.     [-find <path> ... <expression> ...]
  21.     [-get [-p] [-ignoreCrc] [-crc] <src> ... <localdst>]
  22.   # 合并
  23.     [-getmerge [-nl] <src> <localdst>]
  24.     [-ls [-C] [-d] [-h] [-q] [-R] [-t] [-S] [-r] [-u] [<path> ...]]
  25.     [-mkdir [-p] <path> ...]
  26.   # 本地移动到 hdfs
  27.     [-moveFromLocal <localsrc> ... <dst>]
  28.     [-moveToLocal <src> <localdst>]
  29.     [-mv <src> ... <dst>]
  30.     [-put [-f] [-p] [-l] <localsrc> ... <dst>]
  31.   # 删除文件
  32.     [-rm [-f] [-r|-R] [-skipTrash] <src> ...]
  33.   # 删除空目录
  34.     [-rmdir [--ignore-fail-on-non-empty] <dir> ...]
  35.     [-stat [format] <path> ...]
  36.     [-tail [-f] <file>]
  37.     [-text [-ignoreCrc] <src> ...]

例子

  1. hadoop fs -ls /
  2. hadoop fs -put
  3. hadoop fs -copyFromLocal    
  4. hadoop fs -moveFromLocal    
  5. hadoop fs -get
  6. hadoop fs -mkdir
  7. hadoop fs -mv
  8. hadoop -fs -cp
  9. hadoop -fs -getmerge
  10. hadoop fs -cat
  11. hadoop fs -text
  12. hadoop fs -rm 
  13. hadoop fs -rmdir
  14. # 不做判断，果断删除
  15. hadoop fs -rm -r