ubuntu切换源

source/_posts/ubuntu20-04切换阿里源.md

@@ -0,0 +1,109 @@
+---
+title: ubuntu20.04切换阿里源
+author: xxzuo
+date: 2022-07-14 00:57:22
+tags:
+- ubuntu
+categories:
+- 配置相关
+---
+
+
+
+### ubuntu20.04 切换阿里源
+
+执行
+
+> sudo apt install libopencv-dev libeigen3-dev
+
+报错
+
+> Err:1 http://archive.ubuntu.com/ubuntu focal/universe amd64 libfyba0 amd64 4.1.1-6build1
+>   Connection failed [IP: 185.125.190.39 80]
+> Err:2 http://archive.ubuntu.com/ubuntu focal/universe amd64 libfreexl1 amd64 1.0.5-3
+>   Connection failed [IP: 185.125.190.36 80]
+> E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/universe/f/fyba/libfyba0_4.1.1-6build1_amd64.deb  Connection failed [IP: 185.125.190.39 80]
+> E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/universe/f/freexl/libfreexl1_1.0.5-3_amd64.deb  Connection failed [IP: 185.125.190.36 80]
+> E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
+
+
+
+怀疑可能是源的问题，因此考虑换成阿里源再试试
+
+```bash
+# 首先进入目录 备份相关文件
+cd /etc/apt
+
+cp sources.list sources.list.bak
+
+```
+
+开始准备换源
+
+```bash
+# 查看系统信息
+lsb_release -a |grep Codename
+# 结果如下
+# No LSB modules are available.
+# Codename:       focal
+```
+
+
+
+> 注意: Codename  :  focal 
+
+
+
+阿里源配置模板
+
+```shell
+deb http://mirrors.aliyun.com/ubuntu/ $Codename main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ $Codename main restricted universe multiverse
+
+deb http://mirrors.aliyun.com/ubuntu/ $Codename-security main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-security main restricted universe multiverse
+
+deb http://mirrors.aliyun.com/ubuntu/ $Codename-updates main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-updates main restricted universe multiverse
+
+deb http://mirrors.aliyun.com/ubuntu/ $Codename-proposed main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-proposed main restricted universe multiverse
+
+deb http://mirrors.aliyun.com/ubuntu/ $Codename-backports main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ $Codename-backports main restricted universe multiverse
+```
+
+我们需要将 **$Codename** 替换为上面的 focal
+
+替换后如下
+
+```shell
+deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
+
+deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
+
+deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
+
+deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
+
+deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
+deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
+```
+
+
+
+替换完成后
+
+>  sudo apt-get update
+
+
+
+再执行
+
+> sudo apt install libopencv-dev libeigen3-dev
+
+成功安装