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如何从centos5.3升级到centos5.4

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首先下载centos5.4版本发布文件

i386平台：

wget http://mirrors.kernel.org/centos/5.4/os/i386/CentOS/centos-release-5-4.el5.centos.1.i386.rpm
rpm -Uvh centos-release-5-4.el5.centos.1.i386.rpm
yum -y update

x86_64平台：

 wget http://mirrors.kernel.org/centos/5.4/os/x86_64/CentOS/centos-release-5-4.el5.centos.1.x86_64.rpm
 rpm -Uvh centos-release-5-4.el5.centos.1.x86_64.rpm
 yum -y update