Notifier about visible ISS passes and/or Iridium flares for Ubuntu PC I am trying to find application that would be capable of notifying me about 
visible ISS pases for specified location and/or visible Iridium flares for specified location.

This software must be capable of running on Ubuntu.

I strongly prefer active open-source projects.

I know that there are multiple mobile apps but I want something that may run on Linux PC.

To avoid "this is subjective" - I will be happy about any software fulfilling this requirements and criteria are not subjective.
Here is something that I wrote for my personal purposes.

Fetches iridium flare details based on your heavens-above credentials and displays a notification in Ubuntu. 

Github

I had one for ISS passes as well. Will find it and push it to the repo soon.