How to upgrade Ubuntu14.04 Server to 14.10

Introduction

You may already know how to upgrade your Ubuntu desktop to the latest version, but if you use Ubuntu Server and just want to upgrade (provided that it will not affect your applications. Generally For example, when it comes to server operating systems, a conservative attitude should be adopted. If it is not a security problem that must be solved by upgrading, it is best not to upgrade, but to use various external means to solve it.)

If you want to upgrade to 14.10 from Ubuntu14.04/13.10/13.04/12.10/12.04 or older, just follow the steps given below. Note that you cannot directly upgrade from 13.10 to 14.10. You should first upgrade from 13.10 to 14.04 and then from 14.04 to 14.10. Here are the detailed steps.

The following steps are not only applicable to 14.10, but also compatible with some Ubuntu derivatives such as Lubuntu14.10, Kubuntu14.10 and Xubuntu14.10.

Server upgrade

To upgrade from an ubuntu14.04 server to a 14.10 server, use the following steps.

Install the update-manager-core package if it has not been installed before:

sudo apt-get install update-manager-core

Edit the file /etc/update-manager/release-upgrades.

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

Set Prompt=normal or Prompt=lts as below

# 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

You can now update your service system through the following command.

sudo do-release-upgrade -d

Until the screen prompts you that you are finished.

The above is the detailed content of How to upgrade Ubuntu14.04 Server to 14.10. For more information, please follow other related articles on the PHP Chinese website!