华为云
Error: Failed to download metadata for repo ‘epel’: Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

CentOS 8.1系统：
参考配置Yum源（CentOS 8.1）配置Yum源

备份Yum源。

cd /etc/yum.repos.d
mkdir bak
mv *.repo bak

下载外网Yum源。

wget -O /etc/yum.repos.d/CentOS-Base.repo https://repo.huaweicloud.com/repository/conf/CentOS-8-reg.repo

修改Yum源。

sed -i "s/\$releasever/8-stream/g" /etc/yum.repos.d/CentOS-Base.repo
cat /etc/yum.repos.d/CentOS-Base.repo

使Yum源生效

yum clean all

yum makecache

yum list

参考链接

#下载脚本
wget https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh
# 增加可执行权限
chmod +x Homebrew.sh
./Homebrew.sh

Don’t run this as root!

自己添加一个

adduser sico

切换用户

su sico