Re: What in /var/logs shows system reboot?

From	Sven Joachim <svenjoac@gmx.de>
Newsgroups	linux.debian.user
Subject	Re: What in /var/logs shows system reboot?
Date	2017-01-23 19:50 +0100
Message-ID	<t2RQJ-1wu-15@gated-at.bofh.it> (permalink)
References	<t2RnI-1o4-15@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 2017-01-23 14:12 -0400, francis picabia wrote:

> I'm running Debian 8.6, and looking at old logs.  I'd like to confirm when
> the system was rebooted to invoke the newer kernel which fixed
> the Dirty COW bug.  With systemd, I'm not seeing the old signs
> like the announcement of the kernel version.

Something like this should do the trick:

$ zgrep "\[    0.000000] Linux version" /var/log/kern.log*

Provided that the files actually go back that far, in the default
logrotate configuration only the last four weeks of kernel logs are
kept.

> This should be a simple question but I'm not seeing the usual
> stuff like dmesg file activity in /var/log

There is no /var/log/dmesg file with systemd because it is redundant,
all that info is in the journal (and in the other log files like
/var/log/kern.log if you have a syslog daemon installed).

Cheers,
       Sven

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What in /var/logs shows system reboot? francis picabia <fpicabia@gmail.com> - 2017-01-23 19:20 +0100
  Re: What in /var/logs shows system reboot? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-01-23 19:20 +0100
    Re: What in /var/logs shows system reboot? francis picabia <fpicabia@gmail.com> - 2017-01-23 19:30 +0100
      Re: What in /var/logs shows system reboot? Joe <joe@jretrading.com> - 2017-01-23 21:10 +0100
        Re: What in /var/logs shows system reboot? francis picabia <fpicabia@gmail.com> - 2017-01-24 01:30 +0100
          Re: What in /var/logs shows system reboot? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-01-24 14:50 +0100
            Re: What in /var/logs shows system reboot? francis picabia <fpicabia@gmail.com> - 2017-01-25 16:00 +0100
        What in /var/logs shows system reboot? Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.com> - 2017-01-25 01:00 +0100
          Re: What in /var/logs shows system reboot? Joe <joe@jretrading.com> - 2017-01-25 09:20 +0100
          Re: What in /var/logs shows system reboot? Joe <joe@jretrading.com> - 2017-01-25 09:30 +0100
  Re: What in /var/logs shows system reboot? Sven Joachim <svenjoac@gmx.de> - 2017-01-23 19:50 +0100

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