Ubuntu Linux是一份完整的桌面Linux操作系统,它可免费获得,并带有社团及专业的支持。Ubuntu社团按照Ubuntu宣言里所铭记的思想而组建:软件应免费提供,软件工具应能以人们本地语种的形式可用且不牺牲任何功能,人们应拥有定制及改变他们软件的*,这包括以任何他们认为适宜的方式。Ubuntu是一个古非洲语单词,意指对他人的博爱。Ubuntu Linux发行将这种博爱之心带到了软件的世界中。
Steve Langasek has announced the beta release of Ubuntu 9.04, code name "Jaunty Jackalope": "The Ubuntu team is pleased to announce the beta release of Ubuntu 9.04 desktop and server editions. Ubuntu 9.04 desktop edition brings faster boot speeds and a new notification system to your everyday computing experience. Ubuntu 9.04 server edition makes it easy to experiment with cloud computing using Eucalyptus on your own servers, and sports an improved mail server integration stack based on Postfix and Dovecot. The Ubuntu 9.04 family of variants, Kubuntu, Xubuntu, Ubuntu Studio, and Mythbuntu, also reach beta status today." See the release announcement and release notes for a detailed listing of all features and upgrade instructions. Download (MD5):ubuntu-9.04-beta-desktop-i386.iso (697MB, torrent), ubuntu-9.04-beta-desktop-amd64.iso (696MB, torrent). The other Ubuntu subprojects have also announced their respective beta releases: Kubuntu (download, release notes), Xubuntu (download, release notes), Ubuntu Studio (download) andMythbuntu (download).