Is there a way for someone to take a look at system activity, like load averages and system processes that happened at an earlier time of the day? I mean is there a command for that? Say for example, I wanted to assess load averages on a machine at 9AM in the morning on the same day. How would I go about doing that? Thank you in advance UNIX/Linux community.


Yes. You need to have set it up beforehand, but if you use the sar command with the sysstat package/facility, you can look back at the past month's daily data.

  • That sounds really neat John, could you kindly give an example :) Thanks! – Linuxn00b Oct 29 '15 at 19:39
  • See the man page: man sar – John Oct 29 '15 at 19:40
  • I guess I have to install the sar package lol. I am not able to find it, tried a "sudo apt-cache search sar" and a plethora of results showed up. – Linuxn00b Oct 29 '15 at 19:45
  • As John said, it's in the sysstat package. You may also want to look at the acct package - "The GNU Accounting utilities for process and login accounting" – cas Oct 29 '15 at 20:44

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