warn of unsupported os

setup/so-whiptail

@@ -1426,6 +1426,27 @@ whiptail_ubuntu_warning() {
 	whiptail --title "$whiptail_title"  --msgbox "$message" 14 75
 
 }
+
+whiptail_unsupported_os_warning() {
+
+	[ -n "$TESTING" ] && return
+
+	read -r -d '' unsupported_os_continue <<- EOM
+	
+	WARNING: An unsupported operating system has been detected. 
+	Security Onion may not install or operate as expected. 
+
+	Would you like to continue the install?
+
+	EOM
+	whiptail --title "$whiptail_title" \
+		--yesno "$unsupported_os_continue" 14 75 --defaultno
+
+	local exitstatus=$?
+	return $exitstatus
+
+}
+
 whiptail_uppercase_warning() {
 
 	[ -n "$TESTING" ] && return