Wifi connect under command

1. Install wifi driver module   

insmod xxx.ko

2. Turn up the wifi

ip link set wlan0 up

3. Use iwlist to scan

iwlist scanning

4. Push wpa_supplicant.conf to /data

network={ssid="TestName"psk="12345678"key_mgmt=WPA-PSKpriority=1}

5. Connect the Ap

wpa_supplicant -Dwext -iwlan0 -c/data/wpa_supplicant.conf

6. Obtain ip

dhcpd wlan0

Other: https://wiki.archlinux.org/index.php/WPA_Supplicant