事先备份一下你重要的文件,因为Ubuntu的跨版本升级不是很好。如果自己安装了非官方源的软件包或者驱动,往往会有一些问题。
当有新版本的Ubuntu的时候,升级管理器会弹出一个气球提示,要升级就单击升级按钮,按步骤来做。
如果想手动升级,则按如下方法来进行:
要从7.04平滑升级到7.0,在终端输入:
$sudo sed -i 's/feisty/gutsy/' /etc/apt/sources.list
打开/etc/apt/sources.list文件,删除或注释掉所有内容,加入如下面的Ubuntu 官方源:
deb http://archive.ubuntu.com/ubuntu/ gutsy main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse
保存关闭,然后运行如下命令:
$sudo apt-get update
$sudo apt-get dist-upgrade
$sudo gksu "update-manager -c"

$sudo apt-get update
$sudo sudo apt-get -d dist-upgrade
$sudo gksu "update-manager -c"
如此,便可开始升级,通常等待2-3 个小时便可更新完成。完成后最好执行一下如下命令:
$sudo apt-get autoremove
$sudo apt-get clean
来释放安装产生的磁盘空间。

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