有时在使用Windows时，您会看到各种各样的名称、缩写和标识符，例如HKLM和HKEY\ U LOCAL\ U MACHINE。HKLM仅仅是HKEY\ U LOCAL\ U MACHINE的别名，还是两者之间有“区别”？今天的超级用户问答帖子回答了一位好奇的读者的问题。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

由wandersick（Flickr）提供的屏幕截图。

问题

超级用户读者Joe Kearney想知道HKLM是否只是HKEY\ U LOCAL\ U机器的别名，或者有时两者之间是否真的存在差异：

HKLM is often used as an abbreviation for HKEY_LOCAL_MACHINE, but unexpectedly, this also appears to be true when I ask the Reg. for a value.

• C:\>reg query “HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion” /v “CurrentVersion” HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion CurrentVersion    REG_SZ    6.1
• C:\>reg query “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion” /v “CurrentVersion” HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion CurrentVersion    REG_SZ    6.1

Are there any references asserting that they are equivalent or that one is an alias for the other? Or are there, in fact, cases where they are not the same thing?

HKLM只是HKEY\ U LOCAL\ U MACHINE的别名，还是两者之间确实存在一些差异？

答案

超级用户贡献者闪烁和约翰史密斯为我们提供了答案。首先，闪烁：

No, although HKLM is an abbreviation for HKEY_LOCAL_MACHINE, there is no official statement from Microsoft that it is always equivalent. In fact, it explicitly states that the availability of these shortcuts depend on the software being used and they are generally referred to as commonly used abbreviati***.

There are cases where abbreviating HKEY_LOCAL_MACHINE to HKLM is not permitted, for instance when defining a policy.

接着是约翰·史密斯的回答：

You also cannot use these abbreviati*** in .reg files, you have to write the full name inside the square scopes there.

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