換源
試過很多源，都不靠譜。
這個阿里雲靠譜。
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-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports 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
pip換源
https://blog.csdn.net/qq_14994573/article/details/80934201
提高 Github 下載速度
https://www.jianshu.com/p/9d42a8ca97af
wsl 文件區分大小寫
wsl不支持區分大小寫是windows的問題，我們可以在windows中開啓區分大小寫。
https://www.sysgeek.cn/windows-10-enable-folders-case-sensitive/
訪問wsl下的文件
比如/mnt 之類的地方直接訪問不到。
https://blog.csdn.net/suyues/article/details/98477219