linux 在命令行中管理 Wifi 连接

pacman -S   dialog   wifi-menu

wifi-menu


























查看网卡信息：
# iwconfig

无线网卡一般是wlan0
# ifconfig wlan0 up #启用无线网卡

查看附近可用的无线接入点（AP）
# iwlist wlan0 scan

让无线网卡接入WEP无线网络：

# iwconfig wlan0 ESSID "linkname" KEY "password" open

WPA/WPA2无线网络 :

vim /etc/network/interfaces
===================

auto wlan0 

iface wlan0 inet dhcp

     #if it's a hidden wifi,add 2 lines below

     #wpa-ap-scan   1

     #wpa-scan-ssid 1

     wpa-ssid       x

     wpa-psk        zhaohuandabaojian!

Wifi Hotspot :

# apt-get install hostapd

Edit /etc/default/hostapd, enter:
# vi /etc/default/hostapd
Add a line :

DAEMON_CONF="/etc/hostapd/hostapd.conf"

Next create a text file called /etc/hostapd/hostapd.conf, enter:
Set interface name:

### Wireless network name ### interface=wlan0   ### Set your bridge name ### bridge=br0

Set driver name:

driver=nl80211

Set country name code in ISO/IEC 3166-1 format. This is used to set regulatory domain. Set as needed to indicate country in which device is operating. This can limit available channels and transmit power.

### (IN == INDIA, UK == United Kingdom, US == United Stats and so on ) ### country_code=IN

Set your SSID:

ssid=nixcraft

Set operation mode (a = IEEE 802.11a, b = IEEE 802.11b, g = IEEE 802.11g)
hw_mode=g
Set channel number (some driver will only use 0 as value)

channel=6

Set wpa mode to 2:

wpa=2

Set your passphrase (WiFi password):

wpa_passphrase=MyWiFiPassword

Set key and auth optionsmanagement for WPA2:

## Key management algorithms ## wpa_key_mgmt=WPA-PSK   ## Set cipher suites (encryption algorithms) ## ## TKIP = Temporal Key Integrity Protocol ## CCMP = AES in Counter mode with CBC-MAC wpa_pairwise=TKIP rsn_pairwise=CCMP   ## Shared Key Authentication ## auth_algs=1   ## Accept all MAC address ### macaddr_acl=0

Save and close the file.

How Do I start / stop / restart AP?

Use the following commands:
# /etc/init.d/hostapd start
# /etc/init.d/hostapd stop
# /etc/init.d/hostapd restart