为wsl ubuntu 更换软件源
ubuntu默认的软件园在国外，国内访问就是龟速，严重影响使用！下面说说更换国内软件源的方法。
我们来切换到软件仓库的配置目录：
cd /etc/apt
备份原来的仓库配置
cp sources.list sources.list.back
使用nano文本编辑器打开配置文件：
nano sources.list
把光标放到第一行，按住ctrl加k清空文字；
然后复制新的仓库地址，见闻莫；
在命令窗口内鼠标右键执行粘贴操作，粘贴玩后可以用光标键浏览；
检查无误后按ctrl加x，在输入y回车保存配置文件
然后执行：
apt update
换源工作就完成了。
注：若命令无法执行，可在命令前加sudo或用su切到root账户操作。
地址，从中选一个即可
阿里云
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic- security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic- updates main restricted universe multiverse
deb 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 main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic- security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic- updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic- proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
这是一条分割线
中科大
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic- updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic- updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic- backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic- backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic- security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic- security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic- proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
这是一条分割线
清华
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic- updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic- updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic- backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic- backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic- security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic- security main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic- proposed main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
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