if somebody care, my adapted & tested
crownd daemon start script with autostart for the standard Throne (Tron) Setup on Ubuntu 16.04 (and higher)
copy text into a new file /etc/systemd/system/crownd.service
[Unit]
Description=Crown's distributed currency daemon
After=network.target
[Service]
User=root
Group=root
Type=forking
PIDFile=/root/.crown/crownd.pid
ExecStart=/usr/local/bin/crownd -daemon -pid=/root/.crown/crownd.pid -conf=/root/.crown/crown.conf -datadir=/root/.crown
#-disablewallet
Restart=always
PrivateTmp=true
TimeoutStopSec=60s
TimeoutStartSec=2s
StartLimitInterval=120s
StartLimitBurst=5
[Install]
WantedBy=multi-user.target
run
systemctl reenable crownd
reload config
systemctl daemon-reload
systemctl restart crownd
or better
reboot and check for startup with
systemctl status crownd
advantage is its autostart on reboot and also on daemon crash