[1129]HDFS查看文件的两种方式

1.localhost：50070 图形化界面 离线查看

可以查看hdfs文件目录的结构，副本数，block大小，文件的大小，但是不能查看文件的内容，要是查看文件的内容的话，得把文件给下载下来

2.通过命令行终端实现在线查看文件内容

[root@cdp101 bin]# hdfs dfs -ls
Found 5 items
drwx------   - hive hive          0 2022-03-17 15:00 .Trash
drwxrwxr-x   - hive hive          0 2022-04-21 10:05 .flink
drwxr-xr-x   - hive hive          0 2022-02-22 18:31 .sparkStaging
drwx------   - hive hive          0 2022-04-12 09:31 .staging
drwxrwxrwt   - hive hive          0 2022-03-23 16:29 warehouse

[root@cdp101 bin]# hdfs dfs -cat ./warehouse/test.db/page_activity_qa/*
cat: `warehouse/test.db/page_activity_qa/p_data_day=+292275056-05-17: Is a directory
cat: `warehouse/test.db/page_activity_qa/p_data_day=2021-07-21: Is a directory
cat: `warehouse/test.db/page_activity_qa/p_data_day=2021-07-22: Is a directory
cat: `warehouse/test.db/page_activity_qa/p_data_day=2022-04-18: Is a directory
cat: `warehouse/test.db/page_activity_qa/p_data_day=2022-04-19: Is a directory
cat: `warehouse/test.db/page_activity_qa/p_data_day=2022-04-20: Is a directory
cat: `warehouse/test.db/page_activity_qa/p_data_day=2022-04-21: Is a directory