# 树莓派 Ubuntu20.04 Server将镜像源替换为阿里源
# 1. 备份原来的更新源**
sudo cp -p /etc/apt/sources.list /etc/apt/sources.list.bak
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# 2. 修改更新源**
编辑apt源文件，替换为阿里源
sudo vim /etc/apt/sources.list
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将文件内容全部清除，将一下内容粘贴进去
deb http://mirrors.aliyun.com/ubuntu-ports eoan main restricted
deb http://mirrors.aliyun.com/ubuntu-ports eoan-updates main restricted
deb http://mirrors.aliyun.com/ubuntu-ports eoan universe
deb http://mirrors.aliyun.com/ubuntu-ports eoan-updates universe
deb http://mirrors.aliyun.com/ubuntu-ports eoan multiverse
deb http://mirrors.aliyun.com/ubuntu-ports eoan-updates multiverse
deb http://mirrors.aliyun.com/ubuntu-ports eoan-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu-ports eoan-security main restricted
deb http://mirrors.aliyun.com/ubuntu-ports eoan-security universe
deb http://mirrors.aliyun.com/ubuntu-ports eoan-security multiverse
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或者直接使用替换指令
进入vim编辑界面
sudo vim /etc/apt/sources.list
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在命令模式下执行以下指令
:1,$s/ports.ubuntu.com\/ubuntu-ports/mirrors.aliyun.com\/ubuntu-ports\//g
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保存退出
:wq
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# 3. 修改 resolv.conf 文件**
sudo vim /etc/resolv.conf
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在resolv.conf 文件后面添加
nameserver 8.8.8.8
nameserver 8.8.4.4
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# 4. 重启网络**
sudo /etc/init.d/networking restart
# 5. 执行更新**
sudo apt-get update
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sudo apt-get upgrade
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