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I am trying to find commands executed on my xen server yesterday - but the oldest command to be seen with history dates from today. Is there a way to see older commands (history displays 380 latest commands on my server)?

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    Which distribution are you using? What number do you get when you execute echo $HISTSIZE in a terminal window? – Christophe Strobbe Dec 11 '18 at 15:25
  • I get 1000. I am on CentOS 7 – Matina G Dec 11 '18 at 15:31
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    @GAD3R That would be the future-oriented solution. But this question looks like it wants to find commands that are no longer in the HISTORY (which is probably not possible). – Christophe Strobbe Dec 11 '18 at 15:32
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    Restore your history file from last night's backup? – doneal24 Dec 11 '18 at 16:45
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I'm afraid your yesterday's history is gone (if not within the 380 lines). Just guessing: Your HISTFILESIZE shell variable is set to around that value. That's "the maximum number of lines contained in the history file." (man bash) which persist across logout / logins. Try setting higher.

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    That's going forward; doesn't answer the actual question. – tink Dec 11 '18 at 16:34

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