Ubuntu, one of the more popular Linux distributions, was first released in October 2004. The first public version was 4.10 and was codenamed Warty Warthog. The second and third editions were named Hoary Hedgehog (5.04) and Breezy Badger (5.10). The combination of an adjective and an animal name has since been maintained.
With the release of version 6.06, Dapper Drake, they decided to start alphabetizing the code names so that users could easily determine the version based on the nickname assigned
Since Dapper Drake, the Ubuntu Linux version codes are alphabetic. For example, over the years, the names have been: Feisty Fawn (7:04), Gutsy Gibbon (7:1
Courtesy of Canonical Ltd.