“&&"是什么意思在这个批处理文件中做什么? [英] What does "&&" do in this batch file?

问题描述

我从回答了我一个问题的某人那里收到了一行代码，但我很困惑:&&"是什么意思在此批处理文件中执行.

I received a line of code from someone who answered one of my questions, but I am confused: what do the "&&" do in this batch file.

@echo off
set /p Quest="How are you today? "
echo %Quest% > Results.txt
findstr /r /i "not.*good not.*well" Results.txt >nul && echo Sorry && goto pause
findstr /i "good well" Results.txt >nul && echo My day is doing good as well
:pause
pause

推荐答案

&&当第一个命令成功返回或错误级别为0时，在行上运行第二个命令.与&&相反的是||，当第一个命令不成功或错误级别为1时，它将运行第二个命令.

&& runs the second command on the line when the first command comes back successfully, or with an errorlevel of 0. The opposite of && is ||, which runs the second command when the first command is unsuccessful, or with an errorlevel of 1.

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