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#!/bin/bash #this script is used to control wpa_supplicant daemon server. #for EAVCapture iMX6 project. #by zhangshaoyan at May 26,2015. WPABIN=wpa_supplicant WIRELESSNAME=wlp5s0 #wlan0 CONFILE=zwpa.conf PIDFILE=/var/run/zwpa.pid DHCLIENT=dhclient #usage: #zwpactl.sh initial:install driver. #zwpactl.sh start: start wpa_supplicant. #zwpactl.sh stop: stop wpa_supplicant. function usage() {         echo "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"         echo "Usage:$0 <commands>."         echo "supported commands:"         echo "initial: install WiFi driver module."         echo "start: start wpa_supplicant daemon server."         echo "stop: stop wpa_supplicant."         echo "by 13522296239"         echo "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@" } #generate .conf file. #here is bug exist,do not keep space or Tab before EOF. function generateConfFile() { cat<<EOF >zwpa.conf ctrl_interface=/var/run/wpa_supplicant network={         ssid="$1"         psk="$2" } EOF } #at least need 1 parameter. if [ $# -lt 1 ];then         usage         exit -1 fi if [ $1 = "initial" ];then         #insmod wifi driver.         #this should be done at the OS starts before GUI starts.         insmod rtl8188.ko elif [ $1 = "start" ];then         if [ $# -lt 3 ];then                 echo "ZSY:need ssid and psk"                 exit -1         fi         #dump out a config file.         generateConfFile $2 $3         #start the daemon server.         ${WPABIN} -i${WIRELESSNAME} -c${CONFILE} -P${PIDFILE} -B         if [ $? -eq 0 ];then                 echo "ZSY:start success"                 #start dhcp client.                 ${DHCLIENT} -v ${WIRELESSNAME}                 if [ $? -ne 0 ];then                         echo "ZSY:dhclient fails"                         exit -1                 fi         else                 echo "ZSY:start failed!"                 exit -1         fi elif [ $1 = "stop" ];then         if [ -x $PIDFILE ];then                 kill `cat $PIDFILE`                 rm -rf $PIDFILE         fi         rm -rf ${CONFILE} else         echo "ZSY:Unknown command"         exit -1 fi #success here. echo "ZSY:wpa ctrl ends with success" exit 0 #the end of file by zhangshaoyan. beijing:/home/shell.albert/imx6/EAVCaptureX86/bin #

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