1.下载yum安装包并解压

wget http://yum.baseurl.org/download/3.2/yum-3.2.28.tar.gz
tar xvf yum-3.2.28.tar.gz

2.进入yum-3.2.28文件夹中进行安装，执行安装指令

cd yum-3.2.28
sudo apt install yum

3.更新版本

yum check-update
yum update
yum clean all

linux安装yum