Newb trying to install a program available in Linux yet not found in Muon

[GreyGeek]

Appreciate the wisdom re avoiding java programs of uncertain origin . . . that's something that I simply would not have discerned on my own. The word "java" appears nowhere on that entire page! So, thanks.

A point of confusion, however: The extended quote following your advice to choose Option B actually contains the instructions for Option A.

My bad!
Wouldn't be the first time I've put the oxcent on the wrong silable, or got my tang tunggled up.

[2muchcoffeeman]

I know the feeling.

So . . . . (he asked, gently), which prescription is the one you truly meant to administer? A or B? Thank you!

[GreyGeek]

I know the feeling.

So . . . . (he asked, gently), which prescription is the one you truly meant to administer? A or B? Thank you!

Need I tell you about my absentmindedness

Option A

sudo nano /etc/apt/sources.list Scroll down to the bottom of the file. Then paste the following line which will enable GetDeb repo.
deb http://archive.getdeb.net/ubuntu xenial-getdeb apps Press Ctrl+O to save then file. Ctrl+X to close the file. And then run the following command to import GetDeb GPG key to your Ubuntu 16.04 system so that APT can verify the package integrity.
wget -q -O- http://archive.getdeb.net/getdeb-archive.key | sudo apt-key add - Now update local package index and install RSSOwl.
sudo apt update

sudo apt install rssowl

Because:

Another advantage is that when the rssowl package is updated to fix bugs or patch security holes you'll get an automatic notification, just like you do with the other repositories in your sources.list file.

Wait! There's more!
When you run "apt install rssowl" if there are required dependencies they'll get installed too, IF they are in the repository. If there are conflicts or attempts to downgrade you will get warnings about that or the install will abort.

[2muchcoffeeman]

Lol, thank you very much.