The recommended way to upgrade a Server Edition installation is to use the
do-release-upgrade utility. Part of the
update-manager-core package, it does not have any graphical dependencies and is installed by default.

推荐的方式来升级服务器版的安装是使用做版本升级实用程序。部分的更新管理器的核心包,它没有任何图形依赖性和默认安装。

Debian based systems can also be upgraded by using
apt-get dist-upgrade. However, using
do-release-upgrade is recommended because it has the ability to handle system configuration changes sometimes needed between releases.

基于Debian的系统也可以升级使用apt - get dist升级。然而,使用做发布升级是推荐的,因为它有能力处理系统配置更改有时之间需要释放。

To upgrade to a newer release, from a terminal prompt enter:

do-release-upgrade

It is also possible to use
do-release-upgrade to upgrade to a development version of Ubuntu. To accomplish this use the
-d switch:

do-release-upgrade -d