HDFS DFS find

The hdfs dfs -find command in Hadoop is used to search for files and directories in the Hadoop Distributed File System (HDFS) that match a specified expression or pattern. This command is similar to the find command in Unix/Linux but is designed specifically for HDFS.

The basic syntax of the hdfs dfs -find command is as follows:

• <path>: The starting path or directory in HDFS where the search will begin.
• <expression>: The search expression or pattern that specifies the criteria for matching files and directories. This can include wildcard characters and other search options.

Here are some examples of how you can use the hdfs dfs -find command:

1. Find All Files and Directories in a Directory:

   • To list all files and directories within a specific directory in HDFS, you can use the command like this:
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   hdfs dfs -find /user/hadoop/data

2. Find Files with a Specific Name:

   • To search for files with a specific name within a directory and its subdirectories, you can use a wildcard expression like this:
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   hdfs dfs -find /user/hadoop/data -name "file.txt"

3. Find Files Matching a Pattern:

   • You can use wildcard characters to match files based on a pattern. For example, to find all .log files, you can use:
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   hdfs dfs -find /user/hadoop/logs -name "*.log"

4. Find Files Modified Within a Specific Time Range:

   • You can use the -mtime option to search for files modified within a specific time range. For example, to find files modified in the last 7 days, you can use:
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   hdfs dfs -find /user/hadoop/data -mtime -7

5. Find Files Owned by a Specific User:

   • To find files owned by a specific Hadoop user, you can use the -user option. For example:
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   hdfs dfs -find /user/hadoop/data -user johndoe