Start a program with systemd
Solution 1:
The systemd unit would look something like this:
$ cat /etc/systemd/system/proftpd.service
[Unit]
Description=ProFTPd FTP Server
After=syslog.target network.target
[Service]
Type=forking
ExecStart=/usr/sbin/proftpd
ExecReload=/bin/kill -HUP $MAINPID
[Install]
WantedBy=multi-user.target
Then you could do:
$ sudo systemctl enable /etc/systemd/system/proftpd.service
$ sudo systemctl start proftpd.service
man systemctl should get you on the right track.