FreeBSD Install vnStat – A Console-Based Network Traffic Monitor https://www.cyberciti.biz/faq/freebsd-install-vnstat-network-traffic-monitor-software/

Not using FreeBSD? Try

→ CentOS / RHEL install vnstat https://www.cyberciti.biz/faq/centos-redhat-fedora-linux-install-vnstat-bandwidth-monitor/

→ Ubuntu Linux install vnstat https://www.cyberciti.biz/faq/ubuntu-install-vnstat-console-network-traffic-monitor/

→ Alpine Linux specific notes https://www.cyberciti.biz/faq/how-to-install-vnstat-on-alpine-linux/

→ Fedora Linux install vnstat https://www.cyberciti.biz/faq/fedora-linux-install-vnstat-network-traffic-monitor/