测试过可以使用的ubuntu更新源

step1：修改/etc/apt/source.list
step2：运行sudo apt-get update 更新

deb cdrom:[Ubuntu 16.04.4 LTS Xenial Xerus - Release amd64 (20180228)]/ xenial main restricted

See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to

newer versions of the distribution.

deb http://us.archive.ubuntu.com/ubuntu/ xenial main restricted

deb-src http://us.archive.ubuntu.com/ubuntu/ xenial main universe restricted multiverse

Major bug fix updates produced after the final release of the

distribution.

deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted

deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-updates main universe restricted multiverse

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://us.archive.ubuntu.com/ubuntu/ xenial universe

deb-src http://us.archive.ubuntu.com/ubuntu/ xenial universe

#deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates universe

deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-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://us.archive.ubuntu.com/ubuntu/ xenial multiverse

deb-src http://us.archive.ubuntu.com/ubuntu/ xenial multiverse

deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates multiverse

deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-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://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse

##deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-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 xenial partner

deb-src http://archive.canonical.com/ubuntu xenial partner

##deb http://security.ubuntu.com/ubuntu xenial-security main restricted

##deb-src http://security.ubuntu.com/ubuntu xenial-security main universe restricted multiverse

deb http://security.ubuntu.com/ubuntu xenial-security universe

deb-src http://security.ubuntu.com/ubuntu xenial-security universe

deb http://security.ubuntu.com/ubuntu xenial-security multiverse

deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse

deb cdrom:[Ubuntu 16.04 LTS Xenial Xerus - Release amd64 (20160420.1)]/ xenial main restricted

deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted

deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted

####deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial universe

###deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates universe

####deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial multiverse

###deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates multiverse

#####deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse

#####deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted

#####deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security universe

######deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security multiverse

# deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted
deb-src http://archive.ubuntu.com/ubuntu xenial main restricted #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties
deb http://archive.canonical.com/ubuntu xenial partner
deb-src http://archive.canonical.com/ubuntu xenial partner
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse