#! /bin/bash

# Add local.none if not already present in order not to log in /var/log/messages
if ! grep -F '/var/log/messages' /etc/rsyslog.conf | grep -qF local0.none; then
    perl -pi.bak -e 's#(\s+)\/var\/log\/messages#;local0.none$1/var/log/messages#' /etc/rsyslog.conf 
    service rsyslog restart
fi