Ubuntu 17.04更换源

更换Ubuntu 有两种方法，一种是直接在命令行更换，还有一种是在Ubuntu 界面中更换。

第一种命令行更换：

输入：sudo /etc/apt/sources.list /etc/apt/sources.list.bak //备份原来的源

替换为阿里云的源：

sudo vi /etc/apt/sources.list //打开编辑sources.list

在sources.list文件中先清空里面的内容，将下面的阿里云的源复制粘贴进去：

# deb cdrom:[Ubuntu 17.04 _Zesty Zapus_ - Release amd64 (20170412)]/ zesty main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://mirrors.aliyun.com/ubuntu/ zesty main restricted # deb-src http://us.archive.ubuntu.com/ubuntu/ zesty main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://mirrors.aliyun.com/ubuntu/ zesty-updates main restricted # deb-src http://us.archive.ubuntu.com/ubuntu/ zesty-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://mirrors.aliyun.com/ubuntu/ zesty universe # deb-src http://us.archive.ubuntu.com/ubuntu/ zesty universe deb http://mirrors.aliyun.com/ubuntu/ zesty-updates universe # deb-src http://us.archive.ubuntu.com/ubuntu/ zesty-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://mirrors.aliyun.com/ubuntu/ zesty multiverse # deb-src http://us.archive.ubuntu.com/ubuntu/ zesty multiverse deb http://mirrors.aliyun.com/ubuntu/ zesty-updates multiverse # deb-src http://us.archive.ubuntu.com/ubuntu/ zesty-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://mirrors.aliyun.com/ubuntu/ zesty-backports main restricted universe multiverse # deb-src http://us.archive.ubuntu.com/ubuntu/ zesty-backports main restricted universe multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu zesty partner # deb-src http://archive.canonical.com/ubuntu zesty partner

最后再更新源，使之生效：

sudo apt-get update

第二种方法直接在界面打开：

再进入software&updates：

选择自己所需要的源，

过程完成，说明更新完成。