I just installed Red Hat 8.0 two days ago. I have never used Linux/Unix before. Has been a Windows guy forever. So, I'm still unfamiliar with how to do stuff in Linux.

Anyway, my problem is: I would like to see what packages are installed in my system and what packages I can add to it. Sort of the Add/Remove Programs in Windows' Control Panel.

So, according to the book I bought, I could do so through System Settings -> Packages. However, I get the following error when the popup was trying to open: "Installation Tree Not Found. The path None does not look like a valid installation source"

I wonder if anybody else have seen this message before. If so, or if you have any suggestions, how do I fix this?

Thanks,

-A Newbie-

To list all the packages you have installed in your system you can use:
rpm -qa
(warning: long!)