【CPU】记录当前嵌入式设备CPU 比较最高CPU 并打印出来

1.测试CPU，最高CPU，最低CPU，平均CPU，单个进程如wlan的CPU占比,脚本后面接的第一个参数是要打印cpu的次数，第二个是sleep多久，第三个参数是记录当前数据的路径path

#!/bin/sh
if [ $# !=  ];then
    echo "wrong parameter!"
    exit
fi
checktime=$
check=
allcpu=
logpath=$"/cpu.txt"
echo "" > $logpath
echo "======================CPU==========================" >> $logpath
echo "NO.   date    avg_cpu Sys_cpu apd_Cpu"  >> ./log/cpu.txt
while [ $check -le $checktime ]
do
    docpu=`cpu -c `
    cucpu=`echo $docpu | cut -b - | cut -d \% -f `
    allcpu=`expr $allcpu + $cucpu`
    avcpu=`expr $allcpu / $check`
    hc=`ps -aux | grep hostapd | grep -v grep | awk '{print $3}'`

    echo "$check        `date`  $avcpu% $cucpu% $hc%" >> $logpath
    sleep $
    check=`expr $check + `
done
echo "finish cpu test"