I thought it would be kind of interesting to find out how old is your current Manjaro install?!? Not whose been using it the longest, but whose been using their current setup the longest. Theoretically it's rolling release, so we should never need to re-install, so who out there is actually utilizing that and taking advantage of it?!?
I'm just a baby: September 2, 2019 on my current install.
derek@derek-7548 ~]$ head /var/log/pacman.log [2019-09-02 03:03] [PACMAN] Running 'pacman --noconfirm --cachedir /var/cache/pacman/pkg --config /opt/pacman-mhwd.conf --root / --needed -Sy xf86-video-ati xf86-video-amdgpu xf86-video-intel xf86-video-nouveau vulkan-intel vulkan-radeon libva-mesa-driver libva-vdpau-driver mesa-vdpau lib32-vulkan-intel lib32-vulkan-radeon lib32-libva-vdpau-driver lib32-mesa-vdpau' [2019-09-02 03:03] [PACMAN] synchronizing package lists [2019-09-02 03:03] [ALPM] transaction started [2019-09-02 03:03] [ALPM] installed xf86-video-ati (1:19.0.0-2) [2019-09-02 03:03] [ALPM] installed xf86-video-amdgpu (19.0.0-1) [2019-09-02 03:03] [ALPM] installed libxvmc (1.0.10-2) [2019-09-02 03:03] [ALPM] installed xf86-video-intel (1:2.99.917+860+g3a2dec17-1) [2019-09-02 03:03] [ALPM-SCRIPTLET] >>> This driver now uses DRI3 as the default Direct Rendering [2019-09-02 03:03] [ALPM-SCRIPTLET] Infrastructure. You can try falling back to DRI2 if you run [2019-09-02 03:03] [ALPM-SCRIPTLET] into trouble. To do so, save a file with the following
I'm sure you can do better than that. . . post it up!! I know someone out there must have a few years?!
EDIT: Thanks to mparillo - you can also use this for an even more simple Born On Date.
$ stat / | grep Birth