12_Package management - davood-dorostkar/Linux GitHub Wiki
working config for /etc/apt/sources.list:
deb http://ir.archive.ubuntu.com/ubuntu/ jammy main restricted universe multiverse
deb http://ir.archive.ubuntu.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://ir.archive.ubuntu.com/ubuntu/ jammy-backports main restricted universe multiverse
deb http://ir.archive.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse
working config for /etc/apt/sources.list:
deb http://debian.asis.ai/debian bullseye main contrib non-free
deb http://security.debian.org/debian-security bullseye-security main contrib non-free
deb http://debian.asis.ai/debian bullseye-updates main contrib non-free
apt policy <package>
apt list
apt list --installed
apt list <package>
apt list -a <package>