下载包 : wget http://yum.baseurl.org/download/2.0/yum-2.0.8-1.src.rpm 固然也能够选择别的版本:http://yum.baseurl.org/download/2.0/ 进入目录进行安装 : rpmbuild --rebuild yum-2.0.8-1.src.rpm cd /usr/src/redhat/RPMS/noarch/ rpm -ivh yum-2.0.8-1.noarch.rpm若是报错 使用：rpm -ivh –nodeps –replacefiles –force *.rpm 配置yum更新地址 vi /etc/yum.conf 删除原文件内容，添加如下内容： [main] cachedir=/var/cache/yum debuglevel=2 logfile=/var/log/yum.log pkgpolicy=newest distroverpkg=redhat-release tolerant=1 exactarch=1 [base] #name=Red Hat Linux $releasever - $basearch - Base #baseurl=http://mirror.dulug.duke.edu/pub/yum-repository/redhat/$releasever/$basearch/ name=Red Hat Linux $releasever - $basearch - Base baseurl= http://centos.ustc.edu.cn/centos/4/os/i386/ #[updates] #name=Red Hat Linux $releasever - Updates #baseurl=http://mirror.dulug.duke.edu/pub/yum-repository/redhat/updates/$releasever/ name=Red Hat Linux $releasever - Updates baseurl= http://mirror.centos.org/centos/4/updates/i386/ [base] #name=Red Hat Linux $releasever - $basearch - Base #baseurl=http://mirror.dulug.duke.edu/pub/yum-repository/redhat/$releasever/$basearch/ name=Red Hat Linux $releasever - $basearch - Base baseurl= http://centos.ustc.edu.cn/centos/4/os/i386/ 更新yum： yum update 等待更新完成就可使用yum了。