“@"是什么意思?在 Windows 批处理脚本中的意思 [英] What does "@" mean in Windows batch scripts

问题描述

我看到 @ 用在这样的上下文中:

I saw @ is used in such contexts:

@echo off

@echo start eclipse.exe

@ 在这里是什么意思?

推荐答案

表示不输出相应的命令.比较以下两个批处理文件:

It means not to output the respective command. Compare the following two batch files:

@echo foo

和

echo foo

前者只有 foo 作为输出，而后者打印

The former has only foo as output while the latter prints

H:Stuff>echo foo 
foo

(至少在这里).可以看出，运行的命令也是可见的.

(here, at least). As can be seen the command that is run is visible, too.

echo off 将为完整的批处理文件关闭此功能.但是，echo off 调用本身仍然可见.这就是为什么您会在批处理文件的开头看到 @echo off.关闭命令回显和不要回显关闭它的命令.

echo off will turn this off for the complete batch file. However, the echo off call itself would still be visible. Which is why you see @echo off in the beginning of batch files. Turn off command echoing and don't echo the command turning it off.

在更复杂的批处理文件中删除该行(或将其注释掉)通常是一个有用的调试工具，因为您可以在错误消息之前查看运行的内容.

Removing that line (or commenting it out) is often a helpful debugging tool in more complex batch files as you can see what is run prior to an error message.

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