#!/bin/bash
grep -v pam_unix /var/log/auth.log | grep -v sudo | grep -E [[:digit:]]\.[[:digit:]]\.[[:digit:]]\.[[:digit:]] > /tmp/short-auth.log
grep -v pam_unix /var/log/auth.log.1 | grep -v sudo | grep -E [[:digit:]]\.[[:digit:]]\.[[:digit:]]\.[[:digit:]] > /tmp/short-auth-old.log
chmod 644 /tmp/short-auth*