Hadoop ls

In Hadoop, the hadoop fs -ls command is used to list the files and directories in a specified Hadoop Distributed File System (HDFS) directory. It’s similar to the ls command in Unix/Linux for listing files and directories in a local file system. Here’s the basic syntax of the hadoop fs -ls command:

• <HDFS-path>: This is the path to the directory or file in HDFS that you want to list. It can be an absolute or relative HDFS path.

Examples:

1. To list the contents of the root directory in HDFS, you can use the following command:

   bashCopy code

   hadoop fs -ls /

   This command will display the files and subdirectories in the root directory of HDFS.

2. To list the contents of a specific directory in HDFS, you can provide the path to that directory:

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   hadoop fs -ls /user/yourusername/some_directory

   Replace /user/yourusername/some_directory with the actual path you want to list.

3. To list the contents of a file in HDFS, you can provide the path to that file:

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   hadoop fs -ls /user/yourusername/some_directory/some_file.txt

   This will provide information about the specified file, including its permissions, owner, group, size, and modification timestamp.