How to install vnstat network traffic monitoring tool on Ubuntu
vnstat is a free and open source network traffic bandwidth monitoring tool for Linux and BSD. It is released under GPLv2 license. It uses kernel as information source and light use of system resources. You can get the traffic details by 5 minute, hourly, daily, monthly, weekly, yearly, top days basic. You can also get the live traffic details. It is a simple and easy to use tool. You don’t need to root access to get the details.