[NOTE]Ubuntu 20.04 aliyun
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2022-03-08 10:06:26
...
1.backup
sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup2.replace
sudo vi /etc/apt/sources.list
[i]
[ESC]
:%s/url_string1/mirrors.aliyun.com/g
[ESC]
:%s/url_string2/mirrors.aliyun.com/g
[ESC]
:wq3.update
sudo apt-get update
sudo apt-get upgrade
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