How to determine installation date?

I’m looking for a way to determine the date of installation of a SuSE 10 Enterprise server. I have discovered the /boot/backup_mbr file which provides a pretty good bet, but if the partition table has been changed since installation, I doubt this file is a reliable source. Is there a more definitive marker for the installation date?

JVerhoev.:\

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If you had the checkbox at the end to create a “Clone of your system”
for AutoYast you could look at the date/time on your /root/autoinst.xml
file (assuming time was set properly when you did your installation,
which is required for anything host-based to be accurate of course).

Good luck.

jverhoev wrote:
> I’m looking for a way to determine the date of installation of a SuSE 10
> Enterprise server. I have discovered the /boot/backup_mbr file which
> provides a pretty good bet, but if the partition table has been changed
> since installation, I doubt this file is a reliable source. Is there a
> more definitive marker for the installation date?
>
> JVerhoev.:
>
>
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Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFI9LxK3s42bA80+9kRAj6pAJ4u9ZI2uxmVo8JPFtpDke+GtQ89GQCeNwK0
9FY8cQmA1eg7oaWrQH/v94o=
=LaFS
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Maybe you can look at the date of the earliest RPM package to be installed?

rpm -qa --last | tail -1

which in my case turns out to be:

kde4-kdm-branding-openSUSE-11.0-74.2          Tue 10 Jun 2008 22:32:58 EST

though this is probably just accidental as lots of other packages were installed practically the same time and it looks like the sort goes only to one-second resolution.

There ought to be a better way than having to tail -1 the output of rpm but I don’t see it offhand.