I am trying to calculate NIC I/O AVG say for eth0 which is a 10GIG Interface during a specific time frame on my Linux server....I need NIC I/O AVG for One hour during a load test to check to see the impact on NIC and its utilization.....I also cannot install utility/tools like - nload- iptraf,iftop vnstat etc etc ... But it would be good to know any good utility that i can use...Preferably i like to run a script to capture data and then parse it....ie automate I have tried belowsar -n Dev 1 1 and do see the rxKb/S and txKB/s but cannot make out the Avg NIC I/O utilization in an hour Same when trying to use netstat -iIs there a formula that i can use to get AVG NIC I/O Util for an hour with sar -n or netstat -i......Any thoughts or suggestions would be greatly appreciated.......Thank you  
Linux Server Calculating NIC I/O AVG on eth0
linux;shell script;shell;networking;command line