Connected to web but asks for a CD with packages

General Linux Question
1

When i try to use the cli to update or install something i keep getting this in the terminal, is this normal & how do i get it to connect to the web repository like it should do ?
i`m using debian 10.6

** EDITED OUT **:~$ sudo apt-get update && sudo apt-get install gnome-terminal
[sudo] password for
Ign:1 cdrom://[Official Debian GNU/Linux Live 10.6.0 cinnamon 2020-09-26T11:03] buster InRelease
Err:2 cdrom://[Official Debian GNU/Linux Live 10.6.0 cinnamon 2020-09-26T11:03] buster Release
Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Hit:3 http://security.debian.org/debian-security buster/updates InRelease
Hit:4 http://deb.debian.org/debian buster InRelease
Hit:5 http://deb.debian.org/debian buster-updates InRelease
Hit:6 https://deb.opera.com/opera-stable stable InRelease
Reading package lists… Done
E: The repository ‘cdrom://[Official Debian GNU/Linux Live 10.6.0 cinnamon 2020-09-26T11:03] buster Release’ does not have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:5
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:5
W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:5
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:5
**EDITED OUT **:~$

2

Linux operating systems themselves are in some aspect very old school Today, everyone has an internet connection. But perhaps 20 years ago, when Linux was already widely known, it was far from being common, not even mentioning the extremely low speeds (128kbps max. download speeds) back then. So it was more common to have offline packages ready on your CD to “download” it from there.

That’s why every major Linux distribution is having these installation DVD based package repositores, as the default, in case you don’t have internet (yet) to download the packages you need.

Now all you have to do is comment out or delete these cdrom lines from /etc/apt/sources.list.

Perhaps the following would do it for you the easy way:

cp /etc/apt/sources.list /etc/apt/sources.list.bk
awk '{ if ( $0 ~ /cdrom/ ) { print "#"$0 } else { print $0 } }' /etc/apt/sources.list > /etc/apt/sources.list
3

Thanks...Could you post the exact text to put in the terminal ? Im still a newbie to Linux after only several months as almost nothing goes wrong just some stuff like this & some instability problems like browser lock ups - freezing & sometimes desktop lock ups but still far better than windows.