shell实现带颜色输出的进度条

1、基础版

#!/bin/bash
b=''
for ((i=0;$i<=100;i+=2))
do
        printf "执行进度 :[%-50s]%d%%
" $b $i
        sleep 0.001
        b=#$b  
done
echo -e "
"

2、普通版

#!/bin/bash
processBar()
{
    now=$1
    all=$2
    percent=`awk BEGIN'{printf "%f", ('$now'/'$all')}'`
    len=`awk BEGIN'{printf "%d", (100*'$percent')}'`
    bar='>'
    for((i=0;i<len-1;i++))
    do
        bar="#"$bar
    done
    printf "[%-100s][%03d/%03d]
" $bar $len 100
}

whole=100
process=0
while [ $process -lt $whole ] 
do
    let process++
    processBar $process $whole
    sleep 0.01
done
printf "
"

3、进阶版

#!/bin/bash
i=0;
str=""
arr=("|" "/" "-" "\")
while [ $i -le 100 ]
do
  let index=i%4
  let indexcolor=i%8
  let color=30+indexcolor
  printf "e[0;$color;1m[%-100s][%d%%]%c
" "$str" "$i" "${arr[$index]}"
  sleep 0.05
  let i++
 str+='#'
done
printf "
"

4、高级版

#!/bin/bash
i=0
str=""
arry=("\" "|" "/" "-")
while [ $i -le 100 ]
do
  let index=i%4
  if  [ $i -le 20 ]
    then
    let color=44
    let bg=34
  elif [ $i -le 45 ]
    then
    let color=43
     let bg=33
  elif [ $i -le 75 ]
     then
     let color=41
     let bg=31
  else
     let color=42
     let bg=32
#根据功能需求还可以更改
  fi
  printf "33[${color};${bg}m%-s33[0m %d %c
" "$str" "$i" "${arry[$index]}"
  usleep 3000
  let i=i+1
  str+="#"
done
printf "
"