source:

https://sources.debian.org/

versions:

cat /etc/os-release

https://www.debian.org/releases/

wiki:

apt list –all-versions

https://wiki.debian.org/SourcesList

apt-get:

echo "deb http://ftp.us.debian.org/debian/ stretch-backports-sloppy main" | tee -a /etc/apt/sources.list.d/stretch-backports-sloppy-stable.list

echo "deb http://ftp.us.debian.org/debian/ stretch-backports main" | tee -a /etc/apt/sources.list.d/stretch-backports-stable.list

Install

 apt-get install intbird-deb/stretch-backports-sloppy