Devuan GNU+Linux is a free software operating system for your
computer. Free software means you are free to use, copy
and distribute, study, change the software, and share your
modifications with the community.
software freedom, your way
apt install sysvinit
admin : optional
System-V-like init utilities - transitional package
This package depends on init, which is an essential package that
pulls in the default init system. Starting with jessie, this will be
systemd on Linux. It facilitates a smooth transition and provides a
fallback SysV init binary which can be used to boot the system via the
init=/lib/sysvinit/init kernel command line parameter in case the
system fails to start after the switch to systemd.
If your system successfully boots with systemd or if you have chosen
to stick with sysvinit-core, this package can be removed safely.