1. copyFromLocal
  hadoop dfs -copyFromLocal /opt/tmp /user/hduser/gutenberg
2.ls
 hadoop dfs -ls
 输出:/user/hduser/gutenberg
 hadoop dfs -ls /user/hduser/gutenberg
 输出:
-rw-r--r-- 3 hduser supergroup 674566 2011-03-10 11:38 /user/hduser/gutenberg/pg20417.txt
-rw-r--r-- 3 hduser supergroup 1573112 2011-03-10 11:38 /user/hduser/gutenberg/pg4300.txt
-rw-r--r-- 3 hduser supergroup 1423801 2011-03-10 11:38 /user/hduser/gutenberg/pg5000.txt
3.rmr 删除文件夹
  hadoop dfs -rmr /user/hduser/gutenberg(删除文件夹gutenberg及其所有内容)
09-25 15:01