What is the command to view files in Hadoop?

You can use the command `hadoop fs -cat` to view a file when using the command line interface for Hadoop.

hadoop fs -cat <file_path>

Please replace `` with the full path of the file you want to view, for example: `/user/hadoop/example.txt`.

This command will display the content of the file on the terminal. However, if the file is large or contains non-text content, it may cause the terminal output to be messy or unreadable. It is recommended to use other appropriate tools when dealing with large files or binary files.

Furthermore, there are also other commands related to files that can be used, such as:

hadoop fs -ls <directory_path>：列出给定目录下的文件和子目录。
hadoop fs -mkdir <directory_path>：创建一个新的目录。
hadoop fs -rm <file_path>：删除一个文件。
hadoop fs -mv <source_path> <destination_path>：移动或重命名文件或目录。

These commands can assist you in managing files in Hadoop.