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I've tried vnstat -i eth0 --oneline before but it only printed today and the current month. Is there a way to print the prior day?

My goal is to log daily network activity (rx/tx) from each ethernet interface.

I installed vnstat, and while it reports daily and monthly stats, it doesn't offer a nice way to convert to csv to...

Good point. I'll run both hourly. Is there a way to merge the hourly files into one per day?

The first script kicks off once per day and runs every 5 minutes for 288 times. How can I combine both?

From what I read, if I just run 'sar' it gives me an average CPU since last reboot. Not...

Here's what I have so far for the entire process.

crontab -e

0 0 * * * /scripts/collect_cpu.sh
0 * * * * /scripts/process_cpu.sh



collect_cpu.sh
#!/bin/bash

sar -u 300 288 >>...

Awesome! That worked.

---------- Post updated at 12:38 PM ---------- Previous update was at 12:06 PM ----------

What about time conversion from 12 to 24hr?

Thank you both for your replies. The OS i'm using is Debian 8 x64.



Thank you again for this information. I was not aware about the other columns being part of the whole equation of cpu...

I have a log file that's created daily by this command:

sar -u 300 288 >> /var/log/usage/$(date "+%Y-%m-%d")_$(hostname)_cpu.log

It that contains data like this:

Linux 3.16.0-4-amd64...