I have a question.
I need to do a bash script command that show me CPU usage and stamp in an external txt file.
Have some idea? Thank all so much!
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BTW, what is your idea on this? – Guru Nov 01 '12 at 15:42
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Take a look at this [question](http://stackoverflow.com/questions/9229333/how-to-get-overall-cpu-usage-e-g-57-on-linux) to see how to obtain the CPU usage. You'll just need to put it on a script, then you can run such as: `./cpuUsage.sh > cpu.txt`. – Yamaneko Nov 01 '12 at 15:43
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Im running a script with some xterm. I need to calculate the cpu usage and print it into a text file – NikM Nov 01 '12 at 15:44
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You can use sysstat as suggested in the comments or stick with (probably installed already) top. Example from my system (you can of course grep out a specific field if needed):
$ top -bn 1 | sed -n '3p'
%Cpu(s): 16.4 us, 3.1 sy, 0.0 ni, 79.0 id, 1.3 wa, 0.0 hi, 0.2 si, 0.0 st
You can add the timestamp with date:
$ date
Thu Nov 1 19:46:15 MSK 2012
Lev Levitsky
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ok its work. How can i print this out in txt file with bash? Thank you so mucH! – NikM Nov 01 '12 at 15:59
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@NikM Just add a _redirection_ in the end (`>> log.txt` for example). – Lev Levitsky Nov 01 '12 at 16:00
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The top version and sysstat never worked for me. This did:
ps -A -o pcpu | tail -n+2 | paste -sd+ | bc
RFon
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