batch-file - Windows批处理文件错误: ( was unexpected at this time

Question

这个问题已经有答案了:

setting environmental variable in windows using cmd (1 个回答)

已关闭 4 年前。

这是我的 run.bat 文件:

set var1 = %1
IF %var1%=="Yes" (
    Echo deleting filename.txt
 ) ELSE ( 
    Echo The file was not found.
 )

我运行它的方式如下:run.bat -h 我收到此错误:

C:\Users\admin\Desktop\test>run.bat -h

C:\Users\admin\Desktop\test>set var1 = -h
( was unexpected at this time.

C:\Users\admin\Desktop\test>IF =="Yes" (

Answer 1

您在没有 %1 参数的情况下运行了它。

在命令行中运行:

run.bat something

不仅仅是

run.bat

为了避免这种情况，您必须对 %var1% 使用引号，以使 IF 正常工作:

set "var1=%1"
IF "%var1%"=="Yes" (
    Echo deleting filename.txt
 ) ELSE ( 
    Echo The file was not found.
 )

然后你就可以在没有参数的情况下运行它，它不会提示。