[CentOS] finding out the time of the second-to-last reboot
Paul Heinlein
heinlein at madboa.com
Mon Aug 9 20:52:13 UTC 2010
On Mon, 9 Aug 2010, Boris Epstein wrote:
> Hello all,
> I've got a CentOS box that became non-responsive today for some
> obscure reason and had to be rebooted. Is there a way to find out
> when it last had to be rebooted before today? uptime gives you no
> history past the very last reboot, so obviously I need to find some
> other way to get an answer to my question.
The last utility will do it:
# simple, but needs eye-parsing
last reboot
# exact, but fragile if wtmp isn't old enough
last reboot | head -n2 | tail -n1
but only if /var/log/wtmp is old enough. If your system rotates wtmp,
then you'll have to spelunk /var/log/messages*.
--
Paul Heinlein <> heinlein at madboa.com <> http://www.madboa.com/
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