ubuntu升级到14.04LTS版

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1. 替换源为14.04的源

sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup

sudo gedit /etc/apt/sources.list

源的话可以从如下网址选择

http://wiki.ubuntu.org.cn/Template:14.04source

我选择了如下源

deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse

2. 更新源并升级

sudo apt-get update

sudo apt-get upgrade

sudo apt-get dist-upgrade

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