Permission Owner Group Size Last Mpdified Replication Block Size Name -rw-r--r-- niuke niuke 286B 2022-01-26 18:01 4 32M /user/niuke.log -rw-r--r-- niuke niuke 286B 2022-01-26 18:01 4 32M /user/niuke1.out -rw-r--r-- niuke niuke 286B 2022-01-26 18:01 4 32M /user/niuke2.out -rw-r--r-- niuke niuke 286B 2022-01-26 18:01 4 32M /user/niuke3.csv -rw-r--r-- niuke niuke 286B 2022-01-26 18:01 4 32M /user/niuke4.csv -rw-r--r-- niuke niuke 286B 2022-01-26 18:01 4 32M /user/niuke5.csv -rw-r--r-- niuke niuke 286B 2022-01-26 18:01 4 32M /user/niuke.txt
下面命令的结果为（）
hadoop fs -ls /niuke | awk '{print $9}' | grep csv | wc -l
