WiFi switching script

@Marty @chris.hansen Found it

#!/bin/bash

# Monitor and Manage WiFi Networks                      
# Del Brown                                  
# 11/21/16                                
# delonline@icloud.com                     
#                                                            
# Begin Variable Definitions
#Replace WIFINAME with your school WiFi.  Leaving it empty will disconnect from any network.

WifiWhitelist="WIFINAME"

# End of Variable Definitions

# Begin Function Declarations
connect ()
{

for SchoolNetwork in $WifiWhitelist
    do
        #loop through whitelist and connect to whitelisted network found
        echo " Available Network ""$SchoolNetwork"
        networksetup -setairportnetwork en0 "$SchoolNetwork" &>/dev/null
    done
}

disconnect ()
{
echo "Time to disconnect"
# send disconnect command to en0
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -z
#exit 1
}

onSchoolNetwork ()
{
# test to see if the school network has been joined.  You can either use the networksetup command or the airport utility for this

MyWifi=`networksetup -getairportnetwork en0 | awk '{print $4}'`
#MyWifi=`/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport --getinfo | grep " SSID" | awk '{print $2}'`

# Call the disconnect function if a network outside of school is joined
for AllowedID in $WifiWhitelist
    do
        if [ "$AllowedID" == "$MyWifi" ]
            then # Asset is on the school network
            echo "I am connected to the School Network ""$AllowedID"
            exit 1  
        fi
    done

echo "Device is not connected to School Network so disconnect and reconnect to the school"
disconnect
connect
exit
}


atSchool ()
{
WifiAvailable=`/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -s | awk '{print $1}'`
# test to see if the Asset is at school by scanning for school networks and see if one is the school
for ScannedNetworks in $WifiAvailable
    do
        for SchoolNetwork in $WifiWhitelist
            do
                if [ "$SchoolNetwork" == "$ScannedNetworks" ]
                    then
                        AssetAtSchool="Yes"
                        echo "The Device is at school"
                        return
                fi
            done
    done
AssetAtSchool="No"
echo "asset is not at school so we don't care and we'll exit"
exit
}

# End Function Declarations

#########################

#program starts here
atSchool
onSchoolNetwork