RedHat6.3 set after 64-bit Installation

RedHat6.3 after 64-bit installation, set to add the current user to the Management Group echo 'jedrek ALL = (ALL) ALL '>/etc/sudoers modify to CentOS yumrpm-aq | grep yum view rhel yum www.2cto.com uninstall these packages rpm-aq | grep yum | xargs rpm-e -- nodeps www.2cto.com and then to replace the package with CentOS open the http://mirrors.163.com/centos/6.3/ OS /x86_64/Packages/ to find the corresponding package download, also dependent on the yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm package, By the way also download down 1yum-rhn-plugin-0.9.1-40.el6.noarch // This package can not be found, it seems to be unique to the Red Hat, whether it installs yumsudo rpm-ivh *. rpm downloads the CentOS repo file and first backs up the system's original repo file cd/etc/yum. repo. d sudo mv rhel-s ource. repo rhel-source.repo.bak sudo wget http://mirrors.163.com/.help/CentOS6-Base-163.repo sudo gedit CentOS-Base-163.repo change $ releasever in url to 6.3 sudo yum makecache generate cache sudo yum update System