CPU Usage Script

#!/bin/bash
#POSITIONAL=()
FILE_PATH="$2"
#echo ${FILE_PATH};

while true
do
        # Read /proc/stat file (for first datapoint)
        read cpu user nice system idle iowait irq softirq steal guest< /proc/stat

        # compute active and total utilizations
        cpu_active_prev=$((user+system+nice+softirq+steal))
        cpu_total_prev=$((user+system+nice+softirq+steal+idle+iowait))

        sleep 5

        # Read /proc/stat file (for second datapoint)
        read cpu user nice system idle iowait irq softirq steal guest< /proc/stat

        # compute active and total utilizations
        cpu_active_cur=$((user+system+nice+softirq+steal))
        cpu_total_cur=$((user+system+nice+softirq+steal+idle+iowait))

        # compute CPU utilization (%)
        cpu_util=$((100*( cpu_active_cur-cpu_active_prev ) / (cpu_total_cur-cpu_total_prev) ))

        #printf " Current CPU Utilization : %s\n" "$cpu_util"
        DATE=`date '+%Y-%m-%d %H:%M:%S'`
        echo  "$DATE Current CPU Utilization : $cpu_util"  >> ${FILE_PATH}
done
#exit 0