shell实现带颜色输出的进度条

1、基础版

#!/bin/bash
b=''
for ((i=;$i<=;i+=))
do
        printf "执行进度 :[%-50s]%d%%\r" $b $i
        sleep 0.001
        b=#$b
done
echo -e "\n"

2、普通版

#!/bin/bash
processBar()
{
    now=$
    all=$
    percent=`awk BEGIN'{printf "%f", ('$now'/'$all')}'`
    len=`awk BEGIN'{printf "%d", (100*'$percent')}'`
    bar='>'
    for((i=;i<len-;i++))
    do
        bar="#"$bar
    done
    printf "[%-100s][%03d/%03d]\r" $bar $len
}

whole=
process=
while [ $process -lt $whole ]
do
    let process++
    processBar $process $whole
    sleep 0.01
done
printf "\n"

3、进阶版

#!/bin/bash
i=;
str=""
arr=("|" "/" "-" "\\")
while [ $i -le  ]
do
  let index=i%
  let indexcolor=i%
  let color=+indexcolor
  printf "\e[0;$color;1m[%-100s][%d%%]%c\r" "$str" "$i" "${arr[$index]}"
  sleep 0.05
  let i++
 str+='#'
done
printf "\n"

4、高级版

#!/bin/bash
i=
str=""
arry=("\\" "|" "/" "-")
while [ $i -le  ]
do
  let index=i%
  if  [ $i -le  ]
    then
    let color=
    let bg=
  elif [ $i -le  ]
    then
    let color=
     let bg=
  elif [ $i -le  ]
     then
     let color=
     let bg=
  else
     let color=
     let bg=
#根据功能需求还可以更改
  fi
  printf "\033[${color};${bg}m%-s\033[0m %d %c\r" "$str" "$i" "${arry[$index]}"
  usleep
  let i=i+
  str+="#"
done
printf "\n"