/etc/rpi-issue contains a date that is roughly the same as install date for a normal Debian installation from ISO CD-ROM or HTTP network installer. RPI images are pre-installed, some modification done at first boot to create a unique instance/computer.
ssh host keys are likely your best bet, or maybe /etc/machine-id
I recently did want to know the same, but was not so easy. There were old deb8u packages still so Debian Jessie timeframe about 2016
Newer BTRFS puts a timestamp somewhere in the superblock or so at creation of filesystem. Also Birth timestamp for files but don't remember when that was introduced in Debian.
ssh host keys are likely your best bet, or maybe /etc/machine-id
I recently did want to know the same, but was not so easy. There were old deb8u packages still so Debian Jessie timeframe about 2016
Newer BTRFS puts a timestamp somewhere in the superblock or so at creation of filesystem. Also Birth timestamp for files but don't remember when that was introduced in Debian.
Statistics: Posted by redvli — Thu Oct 24, 2024 4:10 am