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  | #!/bin/sh 
 |  WIFISSID=$1 
 |  WIFIPWD=$2 
 |  CONF=/tmp/wpa_supplicant.conf 
 |    
 |  cp /etc/wpa_supplicant.conf /tmp/ 
 |  echo "connect to WiFi ssid: $WIFISSID, Passwd: $WIFIPWD" 
 |  sed -i "s/SSID/$WIFISSID/g" $CONF 
 |  sed -i "s/PASSWORD/$WIFIPWD/g" $CONF 
 |  killall wpa_supplicant 
 |  sleep 1 
 |  wpa_supplicant -B -i wlan0 -c $CONF 
 |  
  |