如何使用Windows批处理修改数字变量值 [英] How to modify a numeric variable value with Windows batch

问题描述

我有一个脚本文件script_A.cmd，其中包含许多命令，包括以下命令:

I have a script file script_A.cmd containing a lot of commands, including the following:

set NUMBER_RUN=1

此脚本调用另一个名为stript_B.cmd的脚本. 在运行script_B.cmd的过程中，我想更新script_A.cmd并将NUMBER_RUN值的值增加1.换句话说，在第一次运行后，应更改script_A中的 text .cmd到

This script calls another script called stript_B.cmd. During the run of script_B.cmd, I want to update the script_A.cmd and increment the value of the NUMBER_RUN value by 1. In other words, after the first run, it should change that text in script_A.cmd to

set NUMBER_RUN=2

，以此类推以进行后续运行.因此，这需要批处理算法和某种搜索/替换来相应地更改script_A.cmd中的实际文本.

and so on for subsequent runs. So this requires both batch arithmetic and some kind of search/replace to change the actual text in script_A.cmd accordingly.

如何做到这一点，而无需使用从Internet下载的任何工具，而仅使用Windows本机批处理?

How do I do that, without using any tools downloaded from the internet, just Windows native batch?

推荐答案

自动更改代码是个坏主意.最好使用文件来存储值，例如:

Automatic change of code is a bad idea. Better use a file to store values, like:

script_B.cmd

<count.txt set /p Number_Run=
set /a Number_Run +=1
>count.txt echo %Number_Run%

第一行从文件中读取计数器，第二行将其加一，第三行再次将其重写到文件中.

First line reads the counter from a file, second line increases it by one, and the third line rewrites it to the file again.

script_A.cmd

<count.txt set /p Number_Run=
echo %Number_Run%

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