100.sleep 1 101.#################################102.cp -p /etc/yum.repos.d/rhel-source.repo{,.bak} //配置yum仓库 103.cat >/etc/yum.repos.d/rhel-source.repo <<endf 104.[rhel-source-beta] 105.name=RHEL6U3-ISO 106.baseurl=file:///media/cdr