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So, this is the final product:

lineCount=$(iostat | wc -l)
numDevices=$(expr $lineCount - 7);

iostat $interval -x -t |
awk -v awkCpuFile=$cpuFile -v awkDeviceFile=$deviceFile -v...

Thanks so much for the guidance, guys. I will give both a shot and let you know how it goes. Ideally, I want the data to be parsed and written in real time without a buffer, although I did consider...

Sure.

iostat output is below. This particular example is in five second intervals but the script will take in a variable that allows the user to specify whatever time interval in seconds they...

I'm trying to write a script that will parse the output of the iostat command in real time and place the output in csv file(s). I do have a programming background, but am relatively new to shell so...