定时清除 /var/log/massage 下的信息脚本文件

定时清除 /var/log/massage 下的信息脚本

#!/bin/sh
#Date:    0:07
#Author:  Xiaodong
#Mail:    990974238@qq.com
#Punction:This scripts function is clean log massage
LOG_DIR=/var/log
ROOT_UID=0
if [ "$UID" -ne "$ROOT_UID" ]
 then
   echo "Must be root to run this script ."
   exit 1
fi
cd $LOG_DIR ||{
   echo "Cannot change to necessary directory."
   exit 1
}
cat /dev/null>messages && {
   echo "Logs cleaned up."
   exit 0
}
echo "Logs cleaned up fail."
exit 1