Linux下用Shell模拟进度条

之前用c语言模拟过进度条，学了shell发现同样可以写出 

#!/bin/bash

i=0
bar=''
lable=('|' '/' '-' '\\')
index=0
while [ $i -le 100 ]
do
	printf "[%-100s][%d%%][%c]\r" "$bar" "$i" "${lable[$index]}"
	bar='#'$bar
	let i++
	let index++
	let index%=4
	usleep 100000
done

printf "\n"