unset existing variables on script start

setup.sh

@@ -6,7 +6,7 @@
 #######
 
 
-# text formatting ansi codes
+### text formatting ansi codes
 err="\e[1;31m"
 ok="\e[1;32m"
 warn="\e[93m"
@@ -15,13 +15,19 @@ cyan="\e[96m"
 norm="\e[0m"
 
 
-# set variables
+### set variables
+
+unset IP4
+unset useCertbot
+unset CertbotDomain
+unset CertPath
+
 detectedIP=$(ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$/\1/p')
 regexIP4="(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])"
 regexHostname="(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])"
 
 
-# quick intro for the user
+### quick intro for the user
 echo -e "\n${mag}This script will customize the provided NGINX template files for your"
 echo "environment.  You will be prompted for all necessary information.  After that,"
 echo "default error pages will be copied to your webroot and your NGINX configuration"