hadoop dfs 命令:
Overview
cat
chgrp
chmod
chown
copyFromLocal
copyToLocal
count
cp
du
dus
expunge
get
getmerge
ls
lsr
mkdir
moveFromLocal
moveToLocal
mv
put
rm
rmr
setrep
stat
tail
test
text
touchz
创建文件:hadoop dfs -touchz /user/root/test/input/file0
展示文件:hadoop dfs -ls /user/root/test