What to do if a folder does not have read access during recursive traversal?

If a read access error occurs during recursive folder traversal, you should:

• Check the folder permissions (for example, using the command ls -ld <path> in Linux).
• If permissions are missing, request them from the administrator or owner.
• You can change permissions using chmod or change the owner with chown, if you have the appropriate rights.
• In the traversal code, handle access errors so that the program does not terminate but skips such folders or logs the issue.

Example in Python:

import os

def walk_dir(path):
    try:
        for entry in os.scandir(path):
            if entry.is_dir(follow_symlinks=False):
                walk_dir(entry.path)
            else:
                print(entry.path)
    except PermissionError:
        print(f"No access to folder: {path}")

walk_dir('/path/to/directory')

Thus, the traversal continues despite the lack of access to some folders.