作法:bash中的进度列 [英] How to: Progress bar in bash

问题描述

我想在bash操作期间以特定格式显示进度条，类似于以下内容:

I want to show a progress bar during a bash operation in a specific format something similar to the following:

[###########](40%)

更新后应该变成

[###############](50%)

，然后类似地达到100%

有什么办法可以实现这一目标

Is there any way to achieve this

我编写了以下bash程序，但我不知道如何在同一行中显示百分比:

I wrote the following bash program but i don't know how to show the percentage in this on same line:

#!/bin/bash
{
    echo -n "["
    for ((i = 0 ; i <= 100 ; i+=6)); do
        sleep 0.05
        echo -n "###"
    done
    echo -n "]"
    echo
}

让我们假设某个循环中正在执行一定数量的操作，并且在完成每个操作之后，我想报告一些进度.我不想安装pv或默认Ubuntu 12.04安装未附带的任何其他实用程序.

Let's assume that a certain number of operations are being performed in a loop and after the completion of each operation, I want to report some progress. I don't want to install pv or any other utilities that does not come with default Ubuntu 12.04 installation.

推荐答案

让我们使用echo -n '...' $'\r'打印回车符:

Let's use echo -n '...' $'\r' to print a carriage return:

for ((k = 0; k <= 10 ; k++))
do
    echo -n "[ "
    for ((i = 0 ; i <= k; i++)); do echo -n "###"; done
    for ((j = i ; j <= 10 ; j++)); do echo -n "   "; done
    v=$((k * 10))
    echo -n " ] "
    echo -n "$v %" $'\r'
    sleep 0.05
done
echo

它使光标移动到行的开头以继续打印.

It makes the cursor move to the beginning of the line to keep printing.

输出如下，始终在同一行:

Output is as follows, always in the same line:

[ ##################                ] 50 % 

.../...

[ ################################# ] 100 % 

这篇关于作法:bash中的进度列的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！