In Hadoop, you can use the hadoop fs -cp command to copy files or directories from one location to another within the Hadoop Distributed File System (HDFS). This command allows you to duplicate data within HDFS or move it to a different location. Here’s how you can use it:

The basic syntax of the hadoop fs -cp command is as follows:

• <source-path>: This is the source path in HDFS for the file or directory you want to copy.

• <destination-path>: This is the destination path in HDFS where you want to copy the data.

Here are some examples of using the hadoop fs -cp command:

1. To copy a file in HDFS to a different location:

   bashCopy code

   hadoop fs -cp /user/username/file.txt /user/username/new_directory/

   This command copies the file /user/username/file.txt to the /user/username/new_directory/ directory.

2. To copy a directory in HDFS to a different location:

   bashCopy code

   hadoop fs -cp /user/username/source_directory /user/username/destination_directory/

   This command copies the entire source_directory to the destination_directory.

3. To copy a file in HDFS and rename it in the destination:

   bashCopy code

   hadoop fs -cp /user/username/original_file.txt /user/username/renamed_file.txt

   This command copies original_file.txt to the destination but renames it as renamed_file.txt.

4. To copy a file from one user’s directory to another user’s directory:

   bashCopy code

   hadoop fs -cp /user/user1/data.txt /user/user2/

   This command copies data.txt from user1‘s directory to user2‘s directory.