更换Ubuntu软件源
<p> 对于Ubuntu系统， 不同的版本的源都不一样，每一个版本都有自己专属的源。 而对于 Ubuntu 的同一个发行版本，它的源又分布在全球范围内的服务器上。Ubuntu 默认使用的官方源的服务器在欧洲，从国内访问速度很慢。国内的阿里、网易以及一些重点高校也都有 Ubuntu 的源，所以在装完 Ubuntu 系统后最好把官方源更换为国内的源。</p><h2>1.获取Ubuntu代号</h2>
<p>Ubuntu 每个发行版本都有自己的代号，我们要通过我们电脑上 Ubuntu 的代号去找对应的源，Ctrl+Alt+T 打开终端，执行以下命令：</p>
<div class="cnblogs_code">
<pre>lsb_release -a</pre>
</div>
<p> 然后会得到我们自己的 Ubuntu 的版本信息 ，最后一栏 codename 后面的就是我们自己的 Ubuntu 的代号。比如我安装的是 Ubuntu 18.04.1，查出来的代号就是 bionic.</p>
<h2>2.查找可用的源</h2>
<p>清华大学：</p>
<p>https://mirrors.tuna.tsinghua.edu.cn/</p>
<p><img src="https://img2023.cnblogs.com/blog/1760911/202301/1760911-20230113155415439-1002159576.png"></p>
<p> </p>
<p> </p>
<p> <img src="https://img2023.cnblogs.com/blog/1760911/202301/1760911-20230113155443828-1923943998.png"></p>
<p><img src="https://img2023.cnblogs.com/blog/1760911/202301/1760911-20230113155517124-563026699.png"></p>
<p> </p>
<p> </p>
<h2>3.编辑源</h2>
<p> </p>
<p>复制以下内容到编辑器：</p>
<p><img src="https://img2018.cnblogs.com/i-beta/1760911/201911/1760911-20191119110819434-1080109037.png"></p>
<p>将上图ubuntu18.4源模板里红框内的ubuntu默认官方源地址改为step2里面任意一个服务器地址，一般用阿里云和清华大学的源；然后将蓝色框中的内容改为你自己Ubuntu的代号。</p>
<p>例如：</p>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 0, 1)"># 1.阿里云源
deb http:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">##測試版源
deb http:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)"># 源碼
deb</span>-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">##測試版源
deb</span>-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">
# 2.清华大学源
deb http:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">##測試版源
deb http:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)"># 源碼
deb</span>-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">##測試版源
deb</span>-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse</span><span style="color: rgba(0, 0, 0, 1)"><br></span></pre>
</div>
<h2>4.修改源文件source.list</h2>
<p>Ubuntu 的源存放在在 /etc/apt/ 目录下的 sources.list 文件中，修改前我们先做个备份，在终端中执行以下命令：</p>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 255, 1)">sudo</span> <span style="color: rgba(0, 0, 255, 1)">cp</span> /etc/apt/sources.list /etc/apt/sources.list.backup</pre>
</div>
<p>然后执行下面的命令打开 sources.list 文件，清空里面的内容，把上面我们编辑好的国内的源复制进去，保存后退出。</p>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 255, 1)">sudo</span> gedit /etc/apt/sources.list</pre>
</div>
<h2>5.更新软件包列表</h2>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 255, 1)">sudo</span> apt-get update</pre>
</div>
<h2>6.更新软件</h2>
<div class="cnblogs_code">
<pre></pre>
<pre>sudo apt-get upgrade</pre>
</div>
<p>或者</p>
<div class="cnblogs_code">
<pre>sudo apt-get dist-upgrade </pre>
</div>
<p>这里提一下apt-get upgrade 与apt-get dist-upgrade的关系：</p>
<p>upgrade:系统将现有的Package升级,如果有相依性的问题,而此相依性需要安装其它新的Package或影响到其它Package的相依性时,此Package就不会被升级,会保留下来. <br><br>dist-upgrade:可以聪明的解决相依性的问题,如果有相依性问题,需要安装/移除新的Package,就会试着去安装/移除它. <span style="color: rgba(255, 0, 0, 1)">(所以通常这个会被认为是有点风险的升级) </span></p>
<p> </p>
<h2>ubuntu 16.04 source</h2>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 0, 1)"># 东北大学
deb</span>-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial main restricted #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial main restricted</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial restricted multiverse universe #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-updates main restricted</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-updates universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-updates multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">archive.canonical.com/ubuntu xenial partner</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">archive.canonical.com/ubuntu xenial partner</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-security main restricted</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-security universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirror.neu.edu.cn/ubuntu/ xenial-security multiverse</span></pre>
</div>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 0, 1)"># 清华大学
# deb cdrom:/<span style="color: rgba(0, 0, 0, 1)"> xenial main restricted
deb http:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security multiverse</span></pre>
</div>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 0, 1)"># 阿里云
# deb cdrom:/<span style="color: rgba(0, 0, 0, 1)"> xenial main restricted
deb</span>-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">archive.ubuntu.com/ubuntu xenial main restricted #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial main restricted</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-updates main restricted</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-updates universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-updates multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">archive.canonical.com/ubuntu xenial partner</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">archive.canonical.com/ubuntu xenial partner</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-security main restricted</span>
deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-security universe</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.aliyun.com/ubuntu/ xenial-security multiverse</span></pre>
</div>
<h2> Ubuntu 16.04的ARM源</h2>
<div class="cnblogs_code">
<pre>deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-proposed main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial main restricted universe multiverse</span></pre>
</div>
<h2> Ubuntu 18.04的ARM源</h2>
<div class="cnblogs_code">
<pre># <span style="color: rgba(128, 0, 128, 1)">2</span><span style="color: rgba(0, 0, 0, 1)">.清华大学源
deb http:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-security main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-updates main restricted universe multiverse</span>
deb http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-backports main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">##測試版源
deb http:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-proposed main restricted universe multiverse</span></pre>
</div>
<h2> Ubuntu 20.04的ARM源</h2>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 0, 1)"># 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal main restricted universe multiverse</span>
# deb-src https:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal main restricted universe multiverse</span>
deb https:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse</span>
# deb-src https:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse</span>
deb https:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse</span>
# deb-src https:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">
# deb https:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse</span>
# # deb-src https:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">
deb http:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">ports.ubuntu.com/ubuntu-ports/ focal-security main restricted universe multiverse</span>
# deb-src http:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">ports.ubuntu.com/ubuntu-ports/ focal-security main restricted universe multiverse</span>
<span style="color: rgba(0, 0, 0, 1)">
# 预发布软件源，不建议启用
# deb https:</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-proposed main restricted universe multiverse</span>
# # deb-src https:<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-proposed main restricted universe multiverse</span></pre>
</div>
<p> </p>
<p> 离线安装，下载</p>
<p>https://packages.debian.org/bullseye/all/libgomp1-arm64-cross/download</p><br><br>
来源：https://www.cnblogs.com/Mike2019/p/11888164.html
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