代码位置：Android/external/iw

查看支持的命令：

console:/ # iw help
Usage:  iw [options] command
Options:
        --debug         enable netlink debugging
        --version       show version (4.1)
Commands:
        help [command]
                Print usage for all or a specific command, e.g.
                "help wowlan" or "help wowlan enable".

        event [-t] [-r] [-f]
                Monitor events from the kernel.
                -t - print timestamp
                -r - print relative timstamp
                -f - print full frame for auth/assoc etc.

        phy <phyname> info
                Show capabilities for the specified wireless device.

        list
                List all wireless devices and their capabilities.

        phy
        commands
                list all kno