【SHELL】百分比进度指示，原地踏步

百分比进度指示，原地踏步效果实现主要利用退格'\b'，同行'\c'

#!/bin/bash
 
function percentage_progress()
{
  progress=$(($1*100/$2))
 
  if [ $progress -lt 10 ];then
    echo -e "${progress}%\b\b\c"
  elif [ $progress -lt 100 ];then
    echo -e "${progress}%\b\b\b\c"
  else
    echo -e "${progress}%\c"
  fi
}
 
target=5672
start=0
while test $start -le $target
do
  percentage_progress $start $target
  ((start++))
  sleep 0.001
done