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1. 查看操作系统版本 [it@Centos1 ~]# cat /etc/redhat-release CentOS release 6.4 (Final) 2. 让操作系统能够与外网通信 [it@Centos1 ~]# ping www.baidu.com PING www.a.shifen.com (119.75.218.70) 56(84) bytes of data. 64 bytes from 119.75.218.70: icmp_seq=1 ttl=128 time=4.90 ms 64 bytes from 119.75.218.70: icmp_seq=2 ttl=128 time=5.33 ms 3. 配置yum源 [it@Centos1 ~]# vim /etc/yum.repos.d/CentOS-Base.repo [base] name=CentOS-$releasever - Base #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 4. 利用yum升级操作系统版本 [it@Centos1 ~]# yum update Total download size: 121 M Is this ok [y/N]: y 5. 安装完后查看操作系统版本 [it@Centos1 ~]# cat /etc/redhat-release CentOS release 6.6 (Final) (责任编辑：IT) |