Ubuntu 18.04 Exchange domestic source zhong Ke source Ali 163 source Tsinghua Source

There are many images of Ubuntu in China, including Ali, NetEase, and a lot of educational network sources, such as: Tsinghua source, Zhong Ke source.
Here we take the source of Zhong Ke as an example to explain how to modify Ubuntu 18.04 the default source.
To edit the /etc/apt/sources.list file, add the following entry at the top of the file (make the appropriate backup before doing the operation):

# #中科大源deb Https://mirrors. USTC. edu. cn/ubuntu/bionic Main restricted universe multiversedeb-src https://mirrors. USTC. edu. cn/ubuntu/bionic Main restricted universe Multiversedeb https://mirrors. USTC. edu. cn/ubuntu/bionic-updates Main restricted universe multiversedeb-src https://mirrors. USTC. edu. cn/ubuntu/bionic-updates Main restricted universe Multiversedeb https://mirrors. USTC. edu. cn/ubuntu/bionic-backports Main restricted universe multiversedeb-src https://mirrors. USTC.edu.cn/ubuntu/bionic-backports main restricted Universe Multiversedeb https://mirrors.ustc.edu< Span class= "Hljs-preprocessor" >.cn/ubuntu/bionic-security main restricted universe multiversedeb-src https://mirrors .ustc.edu.cn/ Ubuntu/bionic-security main restricted universe multiversedeb https://mirrors.ustc< Span class= "Hljs-preprocessor" >.edu.cn/ubuntu/bionic-proposed main restricted Universe multiversedeb-src https://mirrors.ustc.cn/ubuntu/bionic-proposed main restricted universe multiverse   

Then execute the command:

sudo apt-get updatesudo apt-get upgrade

Several other domestic sources are as follows:

Ali

Deb Http://mirrors. Aliyun. com/ubuntu/bionic Main restricted universe Multiversedeb http://mirrors. Aliyun. com/ubuntu/bionic-security Main restricted universe Multiversedeb http://mirrors. Aliyun. com/ubuntu/bionic-updates Main restricted universe Multiversedeb http://mirrors. Aliyun. com/ubuntu/bionic-proposed Main restricted universe Multiversedeb http://mirrors.aliyun.com/ubuntu/bionic-backports main Restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/bionic main restricted universe multiversedeb-src Http://mirrors.aliyun.com/ubuntu/bionic-security main restricted universe MULTIVERSEDEB-SRC http://mirrors.aliyun.com/ Ubuntu/bionic-updates main restricted universe multiversedeb-src http://mirrors.com/ubuntu/bionic-proposed main restricted universe multiversedeb-src http:/ /mirrors.aliyun.com/ubuntu/bionic-backports Main restricted universe multiverse            

163 source

Deb http:Mirrors.163.com/ubuntu/bionic main restricted Universe Multiversedeb http:Mirrors.163.com/ubuntu/bionic-security main restricted Universe Multiversedeb http:Mirrors.163.com/ubuntu/bionic-updates main restricted Universe Multiversedeb http:mirrors.163.com/ubuntu/bionic-proposed main restricted Universe Multiversedeb http://mirrors.163.com/ubuntu/bionic-backports main restricted universe Multiversedeb-src http:// Mirrors.163.com/ubuntu/bionic main restricted Universe Multiversedeb-src http://mirrors.163.com/ubuntu/ Bionic-security main restricted Universe Multiversedeb-src http://mirrors.163.com/ubuntu/bionic-updates Main Restricted universe Multiversedeb-src http://mirrors.163.com/ubuntu/bionic-proposed main restricted universe Multiversedeb-src http://mirrors.163.com/ubuntu/bionic-backports main restricted universe multiverse 

Tsinghua Source

Deb Https://mirrors. Tuna. Tsinghua. edu. cn/ubuntu/bionic Main restricted universe multiversedeb-src https://mirrors. Tuna. Tsinghua. edu. cn/ubuntu/bionic Main restricted universe Multiversedeb https://mirrors. Tuna. Tsinghua. edu. cn/ubuntu/bionic-updates Main restricted universe multiversedeb-src https://mirrors. Tuna. Tsinghua. edu. cn/ubuntu/bionic-updates Main restricted universe Multiversedeb https://mirrors. Tuna. Tsinghua. edu. cn/ubuntu/bionic-backports Main restricted universe multiversedeb-src https://mirrors. Tuna. Tsinghua. edu. cn/ubuntu/bionic-backports Main restricted universe Multiversedeb https://mirrors. Tuna. Tsinghua. edu. cn/ubuntu/bionic-security main restricted universe multiversedeb-src https://mirrors. Tuna. Tsinghua.educn/ubuntu/bionic-security main restricted universe Multiversedeb https://mirrors. Tuna. Tsinghua.edu. cn/ubuntu/bionic-proposed main restricted universe multiversedeb-src https://mirrors . Tuna. Tsinghua.edu. cn/ubuntu/bionic-proposed main restricted universe multiverse  

Ubuntu 18.04 Exchange domestic source zhong Ke source Ali 163 source Tsinghua Source