1、需要先安裝 yum -y install wpa_supplicant

2、配置wpa_supplicant接口和驅動，執行：vi /etc/sysconfig/wpa_supplicant，按a進入插入模式，編輯如下：

|# Use the flag "-i" before each of your interfaces, like so:

|# INTERFACES="-ieth1 -iwlan0"

|INTERFACES="-iwlan0" |

|# Use the flag "-D" before each driver, like so:

|# DRIVERS="-Dwext"

|DRIVERS="-Dwext"

3、將wifi信息加入到配置文件：wpa_passphrase {wifiSSIDhere} {pwhere} >> /etc/wpa_supplicant/wpa_supplicant.conf，後面增加新的wifi也是如此

4、配置wpa_supplicant

wpa_supplicant -B w -i wlan0 -l /etc/wpa_supplicant/suplicant.conf 或者 /wpa_supplicant.conf 目錄下有兩個，看哪個裏面有內容

ifup wlan0

5、加入到系統啟動內，開機自動連接

vim /etc/rc.d/rc.local

CentOS6.9開啟自動連wifi命令記錄