检测CPU剩余百分比

#!/bin/bash
#Inspect CPU
#Sun Jul 31 17:25:41 CST 2016

PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/wl/bin
export PATH

TERM=linux
export TERM

CpuResult=$(top -bn 1 | grep "Cpu" | awk '{print $5}' | sed 's/\\..*$//g')

if [[ $CpuResult < 20 ]];then
    echo "CPU WARNING : $CpuResult" > /service/script/.cpu_in.txt
    top -bn 1 >> /service/script./cpu_in.txt
    mail -s "Inspcet CPU" wl < /service/script/.cpu_in.txt
fi