When upgrading to Debian Jessie and welcoming systemd at your home sweet home, it can be disturbing to not have working inittab respwaning services.
As usual, the inittab config line was looking like this:
So you will need to put in file /etc/systemd/system/mydaemon.service that code example:
[Unit] Description=My Respawning Daemon After=getty.target [Service] ExecStart=/path/to/bin/mydaemon Restart=always [Install] WantedBy=multi-user.target
Then to do a “systemctl enable mydaemon.service” for systemd to symlink what it needs.
If you don’t want to reboot for it to work now, use:
systemctl daemon-reload systemctl start mydaemon.service