批处理 - 回声或变量不工作

Question

I have this little batch script: 我有这个小批量脚本：

SET @var = "GREG"
ECHO %@var%
PAUSE

When I run it, it prints: 当我运行它时，它打印：

H:\Dynamics>SET @var = "GREG"

H:\Dynamics>ECHO
ECHO is on.

H:\Dynamics>PAUSE
Press any key to continue . . .

Why won't it print the contents of @var? 为什么不打印@var的内容？ How do I know if @var is even being set? 我怎么知道@var是否被设置？

Answer 1

Dont use spaces: 不要使用空格：

SET @var="GREG"
::instead of SET @var = "GREG"
ECHO %@var%
PAUSE

Answer 2

Try the following (note that there should not be a space between the VAR , = , and GREG ). 请尝试以下操作（请注意， VAR ， =和GREG之间不应有空格）。

SET VAR=GREG
ECHO %VAR%
PAUSE