wpa_supplicant的用法

命令格式：wpa_supplicant [-BddhKLqqstuvW] [-P] [-g] \        -i -c [-C] [-D] [-p] \        [-b] [-f] \        [-o] [-O] \        [-N -i -c [-C] [-D] \        [-p] [-b] ...]

驱动（一般常使用的就是wext）：  wext = Linux wireless extensions (generic)  hostap = Host AP driver (Intersil Prism2/2.5/3)  atmel = ATMEL AT76C5XXx (USB, PCMCIA)  wired = Wired Ethernet driver

各个选项及其含义:  -b = optional bridge interface name       增加网桥名称  -B = run daemon in the background       后台执行  -c = Configuration file       附加配置文件，即根据配置文件执行操作  -C = ctrl_interface parameter (only used if -c is not)       控制网口参数  -i = interface name       网口名称  -d = increase debugging verbosity (-dd even more)       增加调试信息输出  -D = driver name (can be multiple drivers: nl80211,wext)       驱动名称  -g = global ctrl_interface       全局网口配置  -K = include keys (passwords, etc.) in debug output       在debug输出中包含keys  -t = include timestamp in debug messages       将各个debug信息前输出时间标签  -h = show this help text       显示帮助信息  -L = show license (GPL and BSD)       显示license  -o = override driver parameter for new interfaces       覆盖driver参数  -O = override ctrl_interface parameter for new interfaces       覆盖ctrl_interface参数  -p = driver parameters       携带驱动参数  -P = PID file       进程文件  -q = decrease debugging verbosity (-qq even less)        在debug中不输出指定参数  -v = show version       显示版本信息  -W = wait for a control interface monitor before starting       启动前等待控制接口  -N = start describing new interface       启动对新接口的描述