Remove a specific wifi network SSID from the list of remembered wifi networks

forgetWifiNetwork.sh

#!/bin/bash

for interface in $(networksetup -listnetworkserviceorder | grep Hardware | awk '/Wi-Fi/ { print $NF }' | awk -F ")" '{ print $1 }')
do
  echo "Forgetting non-preferred SSID for $interface"
  networksetup -removepreferredwirelessnetwork $interface <SSID to forget>
done

exit 0