hpodder is a command-line tool for Linux. It has quite a few features. A few highlights are that it is easy to learn and use, has automatic discovery of feed metadata, and can import iPodder settings.
The GnuWin32 project provides Win32-versions of GNU tools, or tools with a similar open source licence. The ports are native ports, that is they rely only on libraries provided with any standard 32-bits MS-Windows operating system, such as MS-Windows 95 /
When something goes wrong with your Linux-based system, you can try to diagnose it yourself with the many troubleshooting tools bundled with the operating system.