原文章:https://blog.csdn.net/qq_23835707/article/details/111629344
1.备份原来的源,将以前的源备份一下,以防以后可以用的。
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
2.打开/etc/apt/sources.list文件,在前面添加如下条目,并保存。
sudo vim /etc/apt/sources.list
3.摁 i 进入插入模式
4.然后摁 键盘的 delete 删除原有的源
5.把下面的清华源复制,然后右键粘贴
#添加清华源
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse multiverse
6.先摁 Esc 退出插入模式,再按住shift键,并连按两次z字符,即可保存刚才的编辑并退出vim编辑状态!!!
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版权声明:本文为CSDN博主「真正的张起灵」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/qq_23835707/article/details/111629344