gistfile1.txt

# which homebridge
/home/pi/.nvm/versions/node/v10.14.2/bin/homebridge

gistfile2.txt

$ sudo systemctl daemon-reload
$ sudo systemctl enable homebridge
$ sudo systemctl start homebridge
$ sudo systemctl status homebridge

homebridge

# $ sudo mkdir -p /var/homebridge
# $ sudo chown -R homebridge:homebridge /var/homebridge
# $ sudo chmod 777 -R /var/homebridge
# $ sudo mkdir -p /etc/default/
# create this file
# sudo touch /etc/default/homebridge
# Defaults / Configuration options for homebridge
# The following settings tells homebridge where to find the config.json file and where to persist the data (i.e. pairing and others)
HOMEBRIDGE_OPTS=-U /var/homebridge

# If you uncomment the following line, homebridge will log more 
# You can display this via systemd's journalctl: journalctl -f -u homebridge
# DEBUG=*

homebridge.service

# /etc/systemd/system/homebridge.service
[Unit]
Description=Node.js HomeKit Server 
After=syslog.target network-online.target

[Service]
Type=simple
User=homebridge
EnvironmentFile=/etc/default/homebridge
# Adapt this to your specific setup (could be /usr/bin/homebridge)
# See comments below for more information
ExecStart=/home/pi/.nvm/versions/node/v10.14.2/bin/homebridge $HOMEBRIDGE_OPTS
Restart=on-failure
RestartSec=10
KillMode=process

[Install]
WantedBy=multi-user.target