安装好ubuntu 17.10后，我们发现使用apt-get 安装软件时特别慢，所以需要更换一下软件源。

方法：

1.备份自带源

sudo cp /etc/apt/sources.list ~/sources.list.bak

2.修改源：

把以下内容贴到/etc/apt/sources.list文件中：

# 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/ artful 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/ artful-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/ artful universe# deb-src http://us.archive.ubuntu.com/ubuntu/ zesty universedeb http://mirrors.aliyun.com/ubuntu/ artful-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/ artful multiverse# deb-src http://us.archive.ubuntu.com/ubuntu/ zesty multiversedeb http://mirrors.aliyun.com/ubuntu/ artful-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/ artful-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# 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/ artful 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/ artful-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/ artful universe# deb-src http://us.archive.ubuntu.com/ubuntu/ zesty universe#deb http://mirrors.aliyun.com/ubuntu/ artful-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/ artful multiverse# deb-src http://us.archive.ubuntu.com/ubuntu/ zesty multiverse#deb http://mirrors.aliyun.com/ubuntu/ artful-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/ artful-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

3.更新源

sudo apt-get update

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。