Things need to do after minimal CentOS 7 installation. Cent OS 7最小化安装之后要做的几件事.

English version:

Before doing this, you need to know something about vi and vim first.

1. Connect to the network.
vi /etc/sysconfig/network-scripts/ifcfg-enoxxxxxxxx
Change the item ONBOOT=yes, then save and reboot.
Attention, we choose NAT network connection here. If you choose Bridge, you need to configure the IP address and others manually. Later I will talk about this.

2. Install ifconfig command
yum search ifconfig, to find the package related to ifconfig which is net-tools.
yum install net-tools

3. Install vim
yum search vim, to find that the package we need to install is vim-X11 and vim-enhanced.
We can just use this command to install all the vim packages:
yum install -y vim*

4. Disable the alarm bell
4.1 The alarm in command line
vim /etc/inputrc
Delete the commont "#" before "set bell-style none", save and reboot.
4.2 The alarm in vi and vim
vim /etc/vimrc
Add "set vb t_vb = " at the end of file.

5. Connect to the Internet using Bridge
vim /etc/sysconfig/network-scripts/ifcfg-enoxxxxxxxx
Add or change the configuration below:
BOOTPROTO=static
IPADDR=xxx.xxx.xxx.xxx
NETMASK=xxx.xxx.xxx.xxx
GATEWAY=xxx.xxx.xxx.xxx
DNS=xxx.xxx.xxx.xxx
If you have multiple DNS addresses, you can write:
DNS1=xxx.xxx.xxx
DNS2=xxx.xxx.xxx
Save and then restart the network service:

systemctl restart network

Chinese version

在这之前，你要清楚vi、vim最基本的编辑命令。

1、连接网络

vi  /etc/sysconfig/network-scripts/ifcfg-enoxxxxxxxx

把最后一项的ONBOOT = yes，保存。

然后重启，注意，这里的网络连接方式选择为NAT，如果选择为Bridge模式，需要手动配置ip地址，后面会讲到如何配置。

2、安装ifconfig等相关命令

yum search ifconfig，找到需要安装的软件包是net-tools。

yum install net-tools

3、安装vim

yum search vim，找到要安装的软件包，安装vim-X11，vim-enhanced。

用下面命令一步到位：

yum install –y vim*

vim是一个很强大的编辑器，可以给vim加上很多个性化的自定义功能及按键，同时有很多很强大的插件可以使用，有兴趣的可以了解一下vim的配置。

4、删除讨厌的警告音

4.1 按Tab键总是有讨厌的警告音，修改以下文件：

vim /etc/inputrc

将第二行“#set bell-style none”前面的注释“#”去掉，保存，重启之后生效。

4.2 vi、vim中讨厌的警告音

vim /etc/vimrc

在文件最后添加配置“set vb t_vb = ”

5、修改系统时间

CentOS系统默认的系统时区是美国时区，我们把改成中国时区：

cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

6、使用Bridge模式上网，使得外网的电脑能ping通本机

vim  /etc/sysconfig/network-scripts/ifcfg-enoxxxxxxxx

改变或增加以下配置：

BOOTPROTO=static

IPADDR=xxx.xxx.xxx.xxx    #你需要设置的静态ip地址

NETMASK=xxx.xxx.xxx.xxx    # 子网掩码

GATEWAY=XXX.XXX.XXX.xxx    # 网关

DNS=XXX.XXX.XXX.XXX    # DNS地址

如果有多个DNS地址，可以写成：

DNS1=xxx.xxx.xxx.xxx

DNS2=xxx.xxx.xxx.xxx

保存。然后重启网络服务：

systemctl restart network

7、自己的电脑，为了省事，直接关闭了防火墙：
systemctl stop firewalld
关闭开机启动：systemctl disable firewalld