一、查看网络

# ip a

1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
     inet 127.0.0.1/8 scope host lo
        valid_lft forever preferred_lft forever
     inet6 ::1/128 scope host 
        valid_lft forever preferred_lft forever
 2: enp0s25:  mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
     link/ether 68:f7:28:f2:9b:64 brd ff:ff:ff:ff:ff:ff
     inet 192.168.5.105/24 brd 192.168.5.255 scope global noprefixroute enp0s25
        valid_lft forever preferred_lft forever
     inet6 fe80::5504:87c:be7f:1d92/64 scope link tentative noprefixroute 
        valid_lft forever preferred_lft forever
 3: wlp3s0:  mtu 1500 qdisc mq state UP group default qlen 1000
     link/ether 5c:e0:c5:85:be:de brd ff:ff:ff:ff:ff:ff
     inet 192.168.5.105/24 brd 192.168.5.255 scope global dynamic wlp3s0
        valid_lft 430650sec preferred_lft 430650sec
     inet6 fe80::5ee0:c5ff:fe85:bede/64 scope link 
        valid_lft forever preferred_lft forever

通常无线网卡是以 wlp开头的 上面是wlp3s0

# ip link set wlp3s0 up // 打开无线网的驱动

# ip link show wlp3s0 // 查看该网络接口的状态

3: wlp3s0:  mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
     link/ether 5c:e0:c5:85:be:de brd ff:ff:ff:ff:ff:ff

连接命令：wpa_supplicant -B -i wlp3s0 -c <(wpa_passphrase “网络的名字” “网络的密码”)
注：wpa_supplicant不支持所有驱动，如不成功可尝试使用wireless-tools，具体使用方法自行百度。如图所示，则表示成功。

# wpa_supplicant -B -i wlp3s0 -c <(wpa_passphrase “网络的名字” “网络的密码”);

为wlp3s0自动分配ip地址（正常情况很快可以获取到ip）

# dhclient wlp3s0

设置NetworkManager自动启动
# chkconfig NetworkManager on

安装NetworkManager-wifi
# yum -y install NetworkManager-wifi

开启WiFi
# nmcli r wifi on 

查看所有的连接

# nmcli c = nmcli con  = nmcli con show = nmcli connect (这4个命令相等)
 NAME               UUID                                  TYPE      DEVICE 
 OrayBox-2.4G-ZHZH  b7fe1bfd-0f60-4895-9671-5b2433fb2e4c  wifi      wlp3s0 
 enp0s25            1b113034-6939-402c-83c9-8d8c95a1f63d  ethernet  -- 

查看无线网络设备(网卡):

nmcli d  = nmcli dev status
 DEVICE   TYPE      STATE   CONNECTION 
 enp0s25  ethernet  连接的  enp0s25    
 lo       loopback  未托管  --         
 wlp3s0   wifi      未托管  -- 

扫描信号（查找所有可用网络）

# nmcli d wifi = nmcli dev wifi
IN-USE  SSID                MODE   CHAN  RATE        SIGNAL  BARS  SECURITY  
        HUAWEI-5FQVAY       Infra  1     270 Mbit/s  94      ▂▄▆█  WPA1 WPA2 
*       OrayBox-2.4G-ZHZH   Infra  8     130 Mbit/s  92      ▂▄▆█  WPA2      
        ChinaNet-aRce       Infra  4     130 Mbit/s  85      ▂▄▆█  WPA1 WPA2 
        ChinaNet-ucyv       Infra  4     130 Mbit/s  80      ▂▄▆_  WPA1 WPA2 
        HUAWEI-5FQVAY_5G    Infra  149   270 Mbit/s  50      ▂▄__  WPA1 WPA2 
        ChinaNet---ZDZS     Infra  6     130 Mbit/s  45      ▂▄__  WPA1 WPA2 
        ChinaNet---ZDZS     Infra  2     130 Mbit/s  44      ▂▄__  WPA1 WPA2 
        ZHS                 Infra  11    270 Mbit/s  44      ▂▄__  WPA1 WPA2 
        OrayBox-5G-ZHZH     Infra  161   270 Mbit/s  44      ▂▄__  WPA2      
        ChinaNet-kVQY       Infra  9     130 Mbit/s  42      ▂▄__  WPA1 WPA2 
        yundo2.4            Infra  1     130 Mbit/s  40      ▂▄__  WPA1 WPA2 
        扬越机电            Infra  6     130 Mbit/s  27      ▂___  WPA1 WPA2 
        TP-LINK_ZH-PIAO     Infra  1     405 Mbit/s  25      ▂___  WPA1 WPA2 
        --                  Infra  6     270 Mbit/s  24      ▂___  WPA2      
        txlooo              Infra  12    270 Mbit/s  20      ▂___  WPA1 WPA2 
        ChinaNet---ZDZS_5G  Infra  40    270 Mbit/s  19      ▂___  WPA1 WPA2 
        FAST_DF98           Infra  13    270 Mbit/s  17      ▂___  WPA1 WPA2

连接(无线网ssid，密码psk) (本人测试过是没有效的??)

//语法：nmcli d wifi connect "ssid" password "psk" wlp3s0
# nmcli d wifi connect "OrayBox-2.4G-ZHZH" password "caron123456789%" wlp3s0

重启，至此基本完成

# service NetworkManager restart
# reboot 

其他 路由

# route

add：添加一条新路由。
del：删除一条路由。
-net：目标地址是一个网络。
-host：目标地址是一个主机。
netmask：当添加一个网络路由时，需要使用网络掩码。
gw：路由数据包通过网关。注意，你指定的网关必须能够达到。
metric：设置路由跳数。