Finding the date on which a Fedora 23 was installed on a given machine

Fri Jan 15 18:15:34 UTC 2016

On Fri, 15 Jan 2016 17:36:31 +0000, Patrick O'Callaghan wrote:

> > rpm -qa --last|tail -10
>
> That's fine as long as Fedora was clean installed and not updated from
> a previous version. The OP didn't say this explicitly.

And it isn't fine either, if the installation is from a Live medium.
Then the RPM database contains entries copied from the Live medium.

dumpe2fs on the root filesystem also works, if the filesystem has
been formatted at 1st install time.