Hadoop-HDFS的shell操作

本文章基于尚硅谷Hadoop 3.x视频进行总结，仅作为学习交流使用        视频链接如下：44_尚硅谷_Hadoop_HDFS_Shell命令上传_哔哩哔哩_bilibili

1.在hadoop-3.3.4目录下启动hdfs服务

[atguigu@hadoop102 hadoop-3.3.4]$ sbin/start-dfs.sh 
Starting namenodes on [hadoop102]
Starting datanodes
Starting secondary namenodes [hadoop104]

#2.查看一个命令的用法

 [atguigu@hadoop102 hadoop-3.3.4]$ hadoop fs -help rm
-rm [-f] [-r|-R] [-skipTrash] [-safely] <src> ... :
  Delete all files that match the specified file pattern. Equivalent to the Unix
  command "rm <src>"
                                                                                 
  -f          If the file does not exist, do not display a diagnostic message or 
              modify the exit status to reflect an error.                        
  -[rR]       Recursively deletes directories.                                   
  -skipTrash  option bypasses trash, if enabled, and immediately deletes <src>.  
  -safely     option requires safety confirmation, if enabled, requires          
    &n