user@debian12:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 12 (bookworm)
Release: 12
Codename: bookworm
user@debian12:~$ uname -a
Linux debian12 6.1.0-1-amd64 #1 SMP Debian 6.1.19-1 (2023-04-19) x86_64 GNU/Linux
user@debian12:~$ cat /etc/apt/sources.list
deb http://deb.debian.org/debian bookworm main
deb-src http://deb.debian.org/debian bookworm main
deb http://deb.debian.org/debian-security/ bookworm-security main
deb-src http://deb.debian.org/debian-security/ bookworm-security main
deb http://deb.debian.org/debian bookworm-updates main
deb-src http://deb.debian.org/debian bookworm-updates main
user@debian12:~$ apt update
Get:1 http://deb.debian.org/debian bookworm InRelease [116 kB]
Get:2 http://deb.debian.org/debian-security bookworm-security InRelease [48.4 kB]
Get:3 http://deb.debian.org/debian bookworm-updates InRelease [89.5 kB]
Get:4 http://deb.debian.org/debian bookworm/main amd64 Packages [8431 kB]
Reading package lists... Done
Building dependency tree... Done
All packages are up to date.
user@debian12:~$