I removed what I thought was a duplicate from my repository/other software / list - now I can't sudo apt-get update -- and I don't even know what it was I removed. in future will take note of such things.
Initially this morning I was working and researching on how to remove a duplicate uninstalled package that showed up in my CLI ever since attempting to install the game Smoking Guns a couple of days ago . I researched and found out how to remove this duplicate successfully and along the way was sidetracked into attempting to install an app and ended up with a missing key. I experienced a missing key after my recent install of LL 2.8 last week - but researched forum and web and easily corrected that problem . Since then , loving LL - totally seamless integration with everything I've installed and every sys preference / change I've made ... until today . I think what I removed may have had ubuntu.net in it's address line and I don't see any like that now.
I would appreciate some help with this .
after more web search I think this may have to do with keyrings but not sure yet .
please bear in mind I am not bash , code, scripting etc. literate . self learned / taught --- never had benefit of being around other computer users or interacting etc. - construction background - no IT
also please let me know what form , etc. to make any attachments / visuals ; ie. , leafpad ? , copy and paste from terminal and so on . I do know about imgur . just not completely sure about forum protocol
thanks very much , sorry for all the bloat
