debian where is sources.list code example

Example 1: debian bullseye sources.list security

deb http://deb.debian.org/debian bullseye main contrib non-free
#deb-src http://deb.debian.org/debian bullseye main contrib non-free

deb http://security.debian.org/ bullseye-security main contrib non-free
#deb-src http://security.debian.org/ bullseye-security main contrib non-free


# bullseye-updates, previously known as 'volatile'
deb http://deb.debian.org/debian/ bullseye-updates main contrib non-free
deb-src http://deb.debian.org/debian/ bullseye-updates main contrib non-free

# proposed updates for the next point release
deb http://deb.debian.org/debian bullseye-proposed-updates main contrib non-free
deb-src http://deb.debian.org/debian bullseye-proposed-updates main contrib non-free

Example 2: debian 10 sources

$ cat /etc/apt/sources.list

deb http://httpredir.debian.org/debian buster main non-free contrib
deb-src http://httpredir.debian.org/debian buster main non-free contrib

deb http://security.debian.org/debian-security buster/updates main contrib non-free
deb-src http://security.debian.org/debian-security buster/updates main contrib non-free