#!/bin/bash

echo "Enter the domain name to check if it is on this server[ENTER]"
read domain
listdomains=`cat /etc/trueuserdomains | awk '{ print $1}' | sed s/:// | grep $domain`
if [ $domain = "$listdomains" ]; then
        echo "$domain is a valid domain on this server"
        exit
fi
if [ $domain != "$listdomains" ]; then
        echo "$domain is not on this server"
        exit
fi