添加源把Ubuntu8.10升级到Ubuntu9.04的方法

    首先，本文所指的Ubuntu 9.04是指的Jaunty Jackalope版本，目前是一个开发版本，带来的变化可能和Ubuntu 8.10正式版区别不大。不过后期的话，9.04的很多新热性会不断发布到新版本中来，你通过更新系统就可以跟着Ubuntu 9.04走了，有兴趣的朋友可以试试，不过中间可能会由于BUG出现很多不正常的情况，你可要想清楚，想要有所收获就必然要有所付出。

加入Ubuntu 9.04(Jaunty Jackalope)源直接升级就可以：

deb http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse