Linux Ubuntu By anaatndz Sep 20, 2004 Ubuntu 4.10 (Warty Warthog) Apr 8, 2005 Ubuntu 5.04 (Hoary Hedgehog) Apr 26, 2018 Ubuntu 18.04 LTS (Bionic Beaver) Apr 23, 2020 Ubuntu 20.04 LTS (Focal Fossa) Oct 14, 2021 Ubuntu 21.10 (Impish Indri)