如何将Ubuntu Server 12.04 升级到 Ubuntu Server 14.04 LTS

使用网上常用的方法：

博客链接：http://ju.outofmemory.cn/entry/102106 1.安装更新器 sudo apt-get update

sudo apt-get install update-manager-core

2.更新 sudo do-release-upgrade -d

提示找不到最新版本。

如果上诉命令不行使用： sudo do-release-upgrade -p

查看系统版本：

lsb_release -a

如果报：

Usage: lsb_release [options] lsb_release: error: No arguments are permitted

进行安装：

sudo apt-get install lsb-core

上述指令变成脚本：

#!/bin/bash echo "`lsb_release -a`" echo `date` >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "apt-get update-----start" >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "apt-get update-----start" apt-get update echo "apt-get update-----end" echo "apt-get update-----end" >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo `date` >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "apt-get install update-manager-core-----start">> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "apt-get install update-manager-core-----start" apt-get install update-manager-core echo "apt-get install update-manager-core-----end" echo "apt-get install update-manager-core-----end">> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo `date` >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "sudo do-release-upgrade -p -----start" >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "sudo do-release-upgrade -p -----start" do-release-upgrade -p echo "sudo do-release-upgrade -p -----end" echo "sudo do-release-upgrade -p -----end" >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo `date` >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "sudo apt-get install lsb-core ----start" >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "sudo apt-get install lsb-core ----start" sudo apt-get install lsb-core echo "sudo apt-get install lsb-core ----end" echo "sudo apt-get install lsb-core ----end" >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo `date` >> /root/systemUpgrade/system_upgrade_`date +\%Y\%m\%d`.log echo "`lsb_release -a`"

Ubuntu 12.04.4 LTS to 14.04.1 LTS upgrade: “no new release found”： https://askubuntu.com/questions/502886/ubuntu-12-04-4-lts-to-14-04-1-lts-upgrade-no-new-release-found

也有使用此方法：

最后使用以下方法升级成功： 1. sudo apt-get update 2. sudo apt-get dist-upgrade 3. update-manager -d Step3执行后会提示升级，要下载1.4G的数据，安装用1个半小时。