Question 21

Explanation

Solution:

1. Create the Target Directory:

   • Begin by creating the /find/5mfiles directory where the files will be copied.

   # mkdir -p /find/5mfiles

   • The -p option ensures that any necessary parent directories are created automatically if they don’t already exist, preventing errors if the /find directory is missing.

2. Search for Files Larger than 5MB in /etc:

   • First, confirm the search results by finding all files in the /etc directory (and its subdirectories) that are larger than 5MB.

   # find /etc -size +5M

   • Explanation:

     • find /etc: Searches within the /etc directory.

     • -size +5M: Filters files larger than 5 megabytes (MB).

     • This command is helpful to preview the files before performing the copy operation.

3. Find and Copy Files Simultaneously:

   • To streamline the process, use find with -exec to directly copy files larger than 5MB to /find/5mfiles.

   # find /etc -size +5M -exec cp {} /find/5mfiles/ \;

   • Command Breakdown:

     • find /etc: Starts the search within the /etc directory.

     • -size +5M: Finds files that are over 5MB.

     • -exec cp {} /find/5mfiles/ \;: The -exec action runs the cp command for each file found that meets the size criteria.

       • {} is a placeholder that represents each file found by find.

       • \; marks the end of the command executed by -exec.

4. Verify the Copied Files:

   • After running the command, check the contents of /find/5mfiles to confirm the files have been copied successfully.

   # ls /find/5mfiles

   • This command lists the files in /find/5mfiles, allowing you to verify that all files larger than 5MB from /etc were correctly copied.

Additional Notes:

• Previewing Files:

  • Running find /etc -size +5M first without -exec can be beneficial, as it provides a list of files that will be copied. This preview ensures accuracy before executing the cp command.

• Efficiency of -exec:

  • The -exec option is powerful for performing actions like copying directly within the find command, saving time by eliminating the need for separate commands.

• File Size Precision:

  • Ensure you understand that -size +5M refers specifically to files strictly larger than 5MB.