遇到问题：长时间未更新ubuntu18.04的软件源，遇到了源没法更新的问题
没法执行
sudo apt-get update报错是
failed to download repository information
解决办法：
update出现的报错的源，把这些源删掉，详细参考这篇文章，写的详细
https://blog.csdn.net/wangweiwells/article/details/88071636
signed
QiShunwang
“诚信为本、客户至上”
signed
QiShunwang
“诚信为本、客户至上”