Can you figure out VNSTAT command in Linux, if so for what it is being used?

vnstat is used to log and monitor the network traffic on an interface of a system.

vnstat -u -i eth0vnstat

VnStat : A command-line network bandwidth monitoring tool, must be installed, configured and should collect network bandwidth statistics.

vmstat is a tool that reports information about your system's Processes, Memory, Swap (Paging), and CPU resource utilization in real time.
It can be used to determine the root cause of performance and issues related to memory use.

vnstat a console based network monitor which counts bandwidth on network interface and stores in own database