[Banana] turn off the wifi

Banana Pro使用在有線的情況下，如果要把Wifi關掉，怎麼做？
很簡單，用這個指令：

sudo ifconfig wlan2 down

如果要在系統startup的時候就執行這個指令，就在直接在 /etc/rc.local加入這一行。

sudo nano /etc/rc.local

#!/bin/sh -e

#

# rc.local

#

# This script is executed at the end of each multiuser runlevel.

# Make sure that the script will "exit 0" on success or any other

# value on error.

#

# In order to enable or disable this script just change the execution

# bits.

#

# By default this script does nothing.

#turn off the wifi

ifconfig wlan2 down