Use sed to replace the ubuntu image with domestic source

Use sed to replace the ubuntu image with domestic source

First, back up your sources.list and check the contents inside to avoid errors in sed replacement.

# cp /etc/apt/source.list /etc/apt/source.list.bak

Alibaba Cloud's speed is pretty good, just replace the fields in sources.list

# cd /etc/apt
# sed -i "s/archive.ubuntu.com/mirrors.aliyun.com/g" /etc/apt/sources.list

You can also use the 163 source:

mirrors.163.com 。

For different Ubuntu, the contents in sources.list are different.