I was able to enable upstart and disable systemd with commands that follows, but I was not able to prevent its auto re-installation
when invoking apt-get install lxde
(I am used to a serious server configuration without complex gui or without gui at all).
Please help: how can I prevent systemd auto installation for both 64 and 32 bit version? Thank you in advance.
apt-get install upstart-sysv sysvinit-utils -y
cp /usr/share/sysvinit/inittab /etc/inittab
update-initramfs -u
reboot
and then
apt-get remove --purge --auto-remove systemd systemd:i386 -y