grep "^deb\ " -r /etc/apt/ --include=*.list ; cat /etc/os-release
/etc/apt/sources.list.d/nodesource.list:deb [signed-by=/usr/share/keyrings/nodesource.gpg] https://deb.nodesource.com/node_14.x focal main
/etc/apt/sources.list.d/google-chrome.list:deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list.d/amdgpu-pro-local.list:deb [ trusted=yes ] file:/var/opt/amdgpu-pro-local/ ./
/etc/apt/sources.list.d/apandada1-ubuntu-brightness-controller-focal.list:deb http://ppa.launchpad.net/apandada1/brightness-controller/ubuntu focal main
/etc/apt/sources.list.d/groovy.list:deb http://archive.ubuntu.com/ubuntu/ focal main restricted
/etc/apt/sources.list.d/groovy.list:deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted
/etc/apt/sources.list.d/groovy.list:deb http://archive.ubuntu.com/ubuntu/ focal universe
/etc/apt/sources.list.d/groovy.list:deb http://archive.ubuntu.com/ubuntu/ focal-updates universe
/etc/apt/sources.list.d/groovy.list:deb http://archive.ubuntu.com/ubuntu/ focal multiverse
/etc/apt/sources.list.d/groovy.list:deb http://archive.ubuntu.com/ubuntu/ focal-updates multiverse
/etc/apt/sources.list.d/groovy.list:deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
/etc/apt/sources.list.d/groovy.list:deb http://security.ubuntu.com/ubuntu focal-security main restricted
/etc/apt/sources.list.d/groovy.list:deb http://security.ubuntu.com/ubuntu focal-security universe
/etc/apt/sources.list.d/groovy.list:deb http://security.ubuntu.com/ubuntu focal-security multiverse
/etc/apt/sources.list.d/oibaf-ubuntu-graphics-drivers-focal.list:deb http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu focal main
/etc/apt/sources.list.d/deadsnakes-ubuntu-ppa-focal.list:deb http://ppa.launchpad.net/deadsnakes/ppa/ubuntu focal main
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ focal main restricted
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ focal universe
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ focal-updates universe
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ focal multiverse
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ focal-updates multiverse
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu focal-security main restricted
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu focal-security universe
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu focal-security multiverse
NAME="Ubuntu"
VERSION="20.04.2 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.2 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal