Eye/docs/systemd/nfcapd@.service

[Unit]
Description=Traffic collector for %I
After=syslog.target network-online.target

[Service]
Type=forking
EnvironmentFile=/etc/nfcapd/%i.conf
ExecStart=/bin/nfcapd -D -P /var/run/nfcapd.%i.pid -z -w -t 600 -p ${LISTEN_PORT} -S 1 -l ${DATA_DIR} ${EXT}
PIDFile=/var/run/nfcapd.%i.pid
RestartSec=30
Restart=on-failure

[Install]
WantedBy=multi-user.target