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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? Commented Nov 1, 2012 at 15:42
  • Take a look at this question 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. Commented Nov 1, 2012 at 15:43
  • Im running a script with some xterm. I need to calculate the cpu usage and print it into a text file Commented Nov 1, 2012 at 15:44

2 Answers 2

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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
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3 Comments

ok its work. How can i print this out in txt file with bash? Thank you so mucH!
@NikM Just add a redirection in the end (>> log.txt for example).
Yes its work:) Sorry i have used 2> and doesnt work. Thanks a lot!
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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
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@jangorecki sudo apt-get install bc

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