[Unit] Description=Postgres Egress Collector [Service] Type=simple ExecStart=/bin/bash -c "tcpdump -s 128 -Q out -nn -tt -vv -p -l 'tcp and (port 5432 or port 6543)' | perl /root/pg_egress_collect.pl" User=root Slice=services.slice Restart=always RestartSec=3 [Install] WantedBy=multi-user.target