Unit] Description=mailgraph mail log file analyzer After=syslog.target [Service] Nice=19 User=mgraph ExecStart=/bin/bash -c \ 'LANG=C /usr/bin/journalctl -af | /usr/bin/mailgraph -c --daemon-rrd /var/lib/mailgraph --ignore-localhost -l -' [Install] WantedBy=multi-user.target