centos 安装yum

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

2、tar xvf yum-3.2.28.tar.gz

3、cd yum-3.2.28  

4、./yummain.py install yum

5、yum check-update  

     yum update  

     yum clean all