How do I setup sysvinit instead of systemd in Debian 9 (Stretch)

Unix Debian
, ,
1 
apt-get install sysvinit-core
cp /usr/share/sysvinit/inittab /etc/inittab
reboot
apt-get remove --purge --auto-remove systemd
echo -e 'Package: *systemd*\nPin: release *\nPin-Priority: -1\n' > /etc/apt/preferences.d/systemd

http://without-systemd.org/wiki/index.php/Debian_Stretch