命令行：(ap不需要验证密码)
iwlist wlan0 scan //搜索ap
iwconfig wlan0 essid “linksys” //连接ap
udhcpc –i wlan0 //获得动态IP
ifconfig wlan0 190.168.0.101 //此处IP为上一条命令获得的IP
命令行：(ap需要验证密码)
iwlist wlan0 scan //搜索ap
iwconfig wlan0 key xxxxxxxxxx // 输入验证密码 wap2的密码不能用
iwconfig wlan0 key open //密码验证功能打开
iwconfig wlan0 essid “linksys” //连接ap
udhcpc –i wlan0 //获得动态IP
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