HDFS shell常用命令整理

1.启动与关闭Hadoop集群

sbin/start-dfs.sh

sbin/start-yarn.sh

sbin/stop-dfs.sh

sbin/stop-yarn.sh

2.目录相关操作

hadoop fs -ls /dir

hadoop fs -mkdir -p /dir1/dir2

hadoop fs -mv /file /dir1/dir2

hadoop fs -rm /dir1/dir2/file

hadoop fs -rmdir /dir

3.文件移动操作

① 从本地上传到HDFS

hadoop fs -moveFromLocal ./file /dir1/dir2

hadoop fs -copyFromLocal file /dir1/dir2

hadoop fs -put file /dir1/dir2

②从HDFS下载到本地

hadoop fs -copyToLocal file /dir1/dir2

hadoop fs -get file /dir1/dir2

hadoop fs -getmerge file /dir1/dir2

③文件内部操作

hadoop fs -cat /file

hadoop fs -chmod/chown/chgrp

hadoop fs -cp /file /file

hadoop fs -mv /file /file