This page will show you what commands you need to run after one-click install of vnStat

First, open up terminal and login as root:

su - root

At this time the commands have to be run in root. Sorry for any inconvinence

After you have done that, do the following commands in order:

Creates the /var/lib/vnstat/eth0 file with root:root:

vnstat -i eth0 -u

chown vnstat:vnstat /var/lib/vnstat/*eth0

Creates the /var/lib/vnstat/.eth0 file:

vnstat -i eth0 -u

chown vnstat:vnstat /var/lib/vnstat/*eth0

Enables updates every minute:

sed -i -e 's/# \*\/5/\*/' /etc/cron.d/vnstat

Now go to http://vnstat and view all of your bandwidth stats.