修改Ubuntu镜像源
<h1>一、操作步骤</h1><p>1、备份 /etc/apt/sources.list 文件</p>
<p>命令：cp sources.list sources.list.bak</p>
<p><img src="https://img2020.cnblogs.com/blog/1697669/202007/1697669-20200718152229822-639488075.png"></p>
<p> </p>
<p> 2、编辑 sources.list 文件</p>
<p> </p>
<p>命令：vi sources.list</p>
<p> </p>
<p>阿里巴巴镜像源站：https://developer.aliyun.com/mirror/</p>
<p> </p>
<p>将以下内容覆盖 sources.list 原内容</p>
<div class="cnblogs_Highlighter">
<pre class="brush:java;gutter:true;">deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
</pre>
</div>
<p> </p>
<p>3、更新源</p>
<p>命令：sudo apt-get update</p>
<p>4、更新软件</p>
<p>命令：sudo apt-get upgrade</p>
<p> </p><br><br>
来源：https://www.cnblogs.com/wxinyi/p/13335919.html
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