- Novell SuSE---> /etc/SuSE-release
- Red Hat--->/etc/redhat-release, /etc/redhat_version
- Fedora-->/etc/fedora-release
- Slackware--->/etc/slackware-release, /etc/slackware-version
- Old Debian--->/etc/debian_release, /etc/debian_version
- New Debian--->/etc/os-release
- Mandrake--->/etc/mandrake-release
- Yellow dog-->/etc/yellowdog-release
- Sun JDS--->/etc/sun-release
- Solaris/Sparc--->/etc/release
- Gentoo--->/etc/gentoo-release
- *buntu --->cat /etc/issue
- *buntu (jak reszta nie wiem) --->cat /etc/*-release ---> pełne info Distro release ; Distro id distro base itp
https://www.ostechnix.com/find-exact-installation-date-time-linux-os/
oraz
ls -ld /var/log/installer
