shell定时删除tomcat日志和nginx日志信息补充

第一篇：https://blog.youkuaiyun.com/CEVERY/article/details/107672677

脚本完善、监控文件系统磁盘的使用情况进行清理，达到70%，未达到则不清理，直接退出。

补充主要如下：

```powershell
used=`df -h | grep /dev/vda1 | awk '{print $5} |  cut -f 1 -d "%"`

echo "-------------------- 1. start exec the shell ----------------------- "

if [  $used -lt 70 ];
then
    {
        echo "--------- 2. The used of file-system is not arrival to 70% --------- "
        exit 8
    }
fi

echo "--------- 2. The used of file-system have arrival to 70% --------- "
echo "---------------- The next is to clear and restart ---------------- "

echo "--------- 3. to delete the pid f java is $pid ---------------------"

补充shell知识参考