Which option is used with the chmod command recursively to all files and sub-directories in a directory? A. -1 B. #NAME? C. #NAME? D. -R E. None of the above

The correct answer is: D. -R

The -R option is used with the chmod command to apply the specified permissions recursively to all files and sub-directories in a directory.

The -1 option is used to set the permissions of a file to 1, which means that the file can only be read by the owner.

The #NAME? option is used to specify a file name pattern.

The #NAME? option is not a valid option for the chmod command.

Here is an example of how to use the chmod command with the -R option:

chmod -R a+rwx /path/to/directory

This command will set the permissions of all files and sub-directories in the directory /path/to/directory to allow all users to read, write, and execute the files.