系统log过滤

#!/bin/sh
M=`date +"%b %d"`
F=/home/yuzf/a`date +"%Y-%m-%d"`
DAY=`date +"%Y-%m-%d"`
IP=`ifconfig xenbr0 | grep inet | awk '{print $2}' | awk -F ':' '{print $2}'`
sender=""
senderpwd=""
smtp=""
title="xenserver syslog"
receiver=""
#cc=""
cat /var/log/secure | grep "$M" | grep "session opened for user root by" > $F
if [ -s "$F" ];then
sed -i '1i\'$IP'' $F
#echo $IP >> $F
/opt/sendEmail-v1.56/sendEmail -f $sender -t $receiver -s $smtp -u $title -xu $sender -xp $senderpwd -m <$F >> /home/yuzf/aaa 2>&1 && rm -rf $F
else
rm -rf $F


fi