check permissions

Now we check for sudo/root privileges before installation.

weby

@@ -11,7 +11,14 @@ if ! [[ $distr == "Ubuntu" && $osver =~ ^(xenial|bionic)$ ]]; then
 	echo "****  This OS is not supported by Webinoly and could not work properly  ****"
 	echo "****************************************************************************"
 	echo "$(tput sgr0)"
-	read -p "Press [Enter] key to continue..."
+	read -p "Press [Enter] key to Continue or [Ctrl+C] to Cancel..."
+fi
+# Check for sudo/root privileges
+if ! groups $USERNAME | grep &>/dev/null '\bsudo\b' | groups $USERNAME | grep &>/dev/null '\broot\b'; then
+	echo "$(tput setaf 1)"
+	echo "****  [ERROR] sudo/root privileges are required to install Webinoly ****"
+	echo "$(tput sgr0)"
+	read -p "Press [Enter] key to Continue or [Ctrl+C] to Cancel..."
 fi
 
 # In case client is just Updating Webinoly and not fresh-installing we need accurate statistics.