Why does apt still say a source is configured multiple times?
I removed the duplicate line I could see in /etc/apt/sources.list, but apt update still reports a source is configured multiple times. What else should I check?
sources.list
How to Fix 'apt update' Using CD-ROM Source?
I'm going through a tutorial about using the `apt` command but ran into a snag when trying to execute the commands `sudo apt update` and `sudo apt upgrade`.…