ディスク監視システム導入のためのシェルスクリプト

#! /bin/bash
#Author:GaoHongYu
#QQ:1061767621
#Time:2019-12-24 18:43:22
#Name:ncjk.sh
#Version:V1.0
clear
xtip=$(hostname -I)
cprl=$(df -Th |head -2|tail -1|cut -d " " -f 10)
cpky=$(df -Th |head -2|tail -1|cut -d " " -f 12)
cpbfb=$(df -Th |head -2|tail -1|cut -d " " -f 18)
ncrl=$(free -m |head -2|tail -1|cut -d " " -f 13)
ncsy=$(free -m |head -2|tail -1|cut -d " " -f 22) bc=$(echo "scale=2;$ncsy/$ncrl*100" |bc|cut -d ". " -f 1)
i=1
while [ $i -le 60 ];do
  echo -e '\n' 
  echo -e '\n' 
  echo "----- disk monitoring system -----"
  echo "---Author: Mr_GaoHongYu--"
  echo -n "Monitor local IP address:"$xtip
  echo -e '\n'
  echo "----- disk usage -----"
  echo -n "Total system disk capacity:"$cprl
  echo -e '\n'
  echo -n "Current disk free capacity:"$cpky
  echo -e '\n'
  echo -n "Percentage of free capacity: "$cpbfb
  echo -e '\n'
  echo "----- memory usage -----"
  echo -n "Total memory capacity:"$ncrl
  echo -e '\n'
  echo -n "Memory used:"$ncsy
  echo -e '\n'
  echo -n "Percentage of memory used:"
  echo "$BC%"
    sleep 60
  let i++
done