Here is a Python script that classifies files based on their extensions and moves them into corresponding folders:

```python
import os
import shutil

extensions = {
    'Documents': ('.doc', '.docx', '.pdf', '.txt', '.rtf', '.xls', '.xlsx'),
    'Torrents': ('.torrent',),
    'Music': ('.mp3', '.wav', '.wma'),
    'Videos': ('.mp4', '.avi', '.mkv', '.mov'),
    'Programs': ('.exe', '.dmg', '.deb')
}

default_folder = os.path.join(os.path.expanduser('~'), 'Downloads')

for filename in os.listdir(default_folder):
    source = os.path.join(default_folder, filename)
    if os.path.isfile(source):
        for folder, extension_list in extensions.items():
            for extension in extension_list:
                if filename.endswith(extension):
                    destination = os.path.join(default_folder, folder, filename)
                    os.makedirs(os.path.join(default_folder, folder), exist_ok=True)
                    shutil.move(source, destination)
                    break
```

To ensure that this script runs as a cronjob every day at noon, add the following line to your crontab file:

```bash
0 12 * * * /usr/bin/python3 /path/to/classify_files.py
```

Make sure to replace `/path/to/classify_files.py` with the actual path to your Python script.
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