嵌入式linux 远程升级

import requests
import os

def download_update(url, target_file):
    response = requests.get(url, stream=True)
    if response.status_code == 200:
        with open(target_file, 'wb') as f:
            for chunk in response.iter_content(chunk_size=8192):
                f.write(chunk)
        return True
    else:
        return False

def apply_update(update_file):
    if os.path.exists(update_file):
        os.system(f'sudo dpkg -i {update_file}')
        return True
    else:
        return False

if __name__ == "__main__":
    update_url = "https://example.com/update.deb"
    update_file = "/tmp/update.deb"
    
    if download_update(update_url, update_file):
        if apply_update(update_file):
            print("Update applied successfully.")
        else:
            print("Failed to apply update.")
    else:
        print("Failed to download update.")