GNU nano 7.2                                                                                                                       /etc/apt/sources.list
# deb cdrom:[Debian GNU/Linux 12.6.0 _Bookworm_ - Official amd64 NETINST with firmware 20240629-10:18]/ bookworm contrib main non-free-firmware

deb https://deb.debian.org/debian/ bookworm main non-free-firmware contrib non-free
deb-src https://deb.debian.org/debian/ bookworm main non-free-firmware contrib non-free

# bookworm-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports
deb https://deb.debian.org/debian/ bookworm-updates main non-free-firmware contrib non-free
deb-src https://deb.debian.org/debian/ bookworm-updates main non-free-firmware contrib non-free

# Security updates repository
deb https://deb.debian.org/debian-security bookworm-security main non-free-firmware contrib non-free
deb-src https://deb.debian.org/debian-security bookworm-security main non-free-firmware contrib non-free

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.