Ubuntu14.04 Server 升级到14.10 的方法

如果想从Ubuntu14.04/13.10/13.04/12.10/12.04或者更老的版本升级到14.10，只要遵循下面给出的步骤。注意，你不能直接从13.10升级到14.10。你应该先将13.10升级到14.04在从14.04升级到14.10。下面是详细步骤。

下面的步骤不仅能用于14.10，也兼容于一些像Lubuntu14.10，Kubuntu14.10和Xubuntu14.10等的Ubuntu衍生版本

从ubuntu14.04的服务器升级到14.10的服务器，采用下面的步骤。

安装update-manager-core 这个包如果之前没唷安装的话：

sudo apt-get install update-manager-core

编辑 /etc/update-manager/release-upgrades这个文件。

sudo nano /etc/update-manager/release-upgrades

像下面那样设置Prompt=normal或者Prompt=lts

# Default behavior for the release upgrader.
 
[DEFAULT]
# Default prompting behavior, valid options:
#
#  never  - Never check for a new release.
#  normal - Check to see if a new release is available.  If more than one new
#           release is found, the release upgrader will attempt to upgrade to
#           the release that immediately succeeds the currently-running
#           release.
#  lts    - Check to see if a new LTS release is available.  The upgrader
#           will attempt to upgrade to the first LTS release available after
#           the currently-running one.  Note that this option should not be
#           used if the currently-running release is not itself an LTS
#           release, since in that case the upgrader won't be able to
#           determine if a newer release is available.
Prompt=normal

现在可以通过下面的命令来更新你的服务系统了。

sudo do-release-upgrade -d

直到屏幕提示你已完成。

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