Date of a FreeBSD installation

[RW]

On Thu, 13 Jan 2011 21:28:29 +0100
David Demelier <demelier.david at gmail.com> wrote:

> Hello folks,
> 
> I'm just guessing if there is a way to know a FreeBSD installation
> date. We can't look after the uname -a ident since an update of the
> FreeBSD kernel is possible.
> 
> I think searching a file absolutely not touched ever in the system
> can helps but which one?
> 
> markand at Melon ~ $ ls -l /root/.cshrc
> -rw-r--r--  2 root  wheel  798 19 Jul 04:17 /root/.cshrc
> 
> It seems that this file has the FreeBSD dist access time so can't
> refers to neither.
> 
> Do you have any clue?
> 
> Cheers,
> 

I'd suggest looking at the Btimes of top level directories

stat -f "%SB %N" /*