#!bin/bash                                                                                      
#author:jonychen

DATE=$(date +%Y-%m-%d)
echo start ${DATE} task
aa=`df -h | awk '{print$5}'|sed -n "2, 1p"`
bb=`echo ${aa%\%*}`
cc=70
echo ${bb}

if [ ${bb} -ge ${cc} ]
then
    echo start delete big file
    mubiao=(`ls /opt/log/*.log* /opt/log/resin-log/*.log*`)
    for i in ${mubiao[*]}
    do
        echo "" > ${i}
        rm -rf ${i}
    done
    #find /opt/log/ -size +50M -exec rm {} \;
    #find /opt/log/resin-log/ -size +50M -exec rm {} \;
    echo end delete
else
    echo no file need to delete
fi
echo end ${DATE} task

#!/bin/bash
#author：jonychen

disk_sda2=df -h |sed -n '2p'|awk '{print $5}' |cut -f 1 -d '%'
if
    ((disk_sda2>80));
then
    echo "this is error"
    echo date"192.168.40.1061 this is over 80%" |mail -s "disk over 80%,script: sh /home/script/free_space.sh" 1232332@qq.com
else
    echo "this is ok"
fi