应该是:
更改软件包源。修改/etc/apt/sources.list 文件,使用sudo gedit命令。
终端命令:
$:sudo gedit /etc/apt/sources.list
删除原有文本中的软件源,再添加:
deb
http://cn.archive.ubuntu.com/ubuntu breezy main restricted universe multiverse
deb
http://cn.archive.ubuntu.com/ubuntu breezy-updates main restricted universe multiverse
deb
http://security.ubuntu.com/ubuntu breezy-security main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu warty main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu warty-security main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu warty-updates main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu hoary main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu hoary-security main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu hoary-updates main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu breezy main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu breezy-security main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu breezy-updates main restricted universe multiverse
deb
http://archive.ubuntu.org.cn/ubuntu-cn ubuntu.org.cn main universe multiverse restricted
deb
http://archive.ubuntu.org.cn/backports hoary-backports main universe multiverse restricted
deb
http://archive.ubuntu.org.cn/backports hoary-extras main universe multiverse restricted
保存文本。
$:sudo apt-get update
$:sudo apt-get dist-upgrade