Hadoop FS find

The hadoop fs -find command is used to search for files and directories within the Hadoop Distributed File System (HDFS) that match a specific pattern. This command is similar to the Unix/Linux find command for searching files and directories.

Here is the basic syntax of the hadoop fs -find command:

• <path>: The starting directory within HDFS where you want to begin your search.
• "<pattern>": The search pattern you want to match against filenames and directories. You can use wildcards like * (matches any sequence of characters) and ? (matches any single character) in the pattern.

For example, if you want to find all files and directories under the /user/hadoop directory in HDFS that have “data” in their names, you can use the following command:

This command will list all files and directories within /user/hadoop that contain the word “data” in their names.

Here are a few additional options you can use with the hadoop fs -find command:

• -type <file|directory>: Specifies whether you want to search for files or directories. For example, -type f searches for files, and -type d searches for directories.

• -print: This option is not required and is used by default. It prints the matching file or directory paths to the console.

• -prune: Allows you to exclude certain directories from the search. For example, you can use -prune -path "/user/hadoop/exclude" to exclude the /user/hadoop/exclude directory from the search.

Keep in mind that the hadoop fs -find command operates within HDFS, so it searches for files and directories stored in Hadoop’s distributed file system.