％PATH％在Windows 2008 Server实际上不工作 [英] %PATH% on Windows 2008 Server actually not working

问题描述

如下所示，在系统Path变量中添加％AppData％\\\
pm 。我也试过将它添加到用户路径变量。文件 grunt.cmd 存在于目录中，但只有在我使用绝对路径指定它时才有效。 AKA，路径不工作。

As you can see below, %AppData%\npm is added in the system Path variable. I've also tried adding it to the User Path variable. The file grunt.cmd exists in the directory, but only works if I specify it with an absolute path. AKA, path does not work.

C:\Users\TeamCity>echo %path%
%AppData%\npm;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows
\System32\WindowsPowerShell\v1.0\;c:\Program Files (x86)\Microsoft SQL Server\10
0\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\Tools\Binn\;c:\Program F
iles\Microsoft SQL Server\100\DTS\Binn\;c:\Program Files (x86)\Microsoft SQL Ser
ver\100\Tools\Binn\VSShell\Common7\IDE\;c:\Program Files (x86)\Microsoft SQL Ser
ver\100\DTS\Binn\;C:\Program Files\Microsoft\Web Platform Installer\;C:\Program
Files\nodejs\

C:\Users\TeamCity>dir %appdata%\npm
 Volume in drive C has no label.
 Volume Serial Number is B845-1135

 Directory of C:\Users\TeamCity\AppData\Roaming\npm

05/29/2013  03:14 AM    <DIR>          .
05/29/2013  03:14 AM    <DIR>          ..
05/29/2013  03:14 AM               298 grunt
05/29/2013  03:14 AM               159 grunt.cmd
05/29/2013  03:13 AM    <DIR>          node_modules
               2 File(s)            457 bytes
               3 Dir(s)  23,690,498,048 bytes free

C:\Users\TeamCity>grunt
'grunt' is not recognized as an internal or external command,
operable program or batch file.

C:\Users\TeamCity>%appdata%\npm\grunt
grunt-cli: The grunt command line interface. (v0.1.9)

运行时：

• Windows Server 2008 R2 Datacenter


• Service Pack 1


• 64位

推荐答案

我不认为你可以推迟变量扩展的路径。路径中的是按原样使用的，它在搜索期间不会被重新解释。

I don't think you can defer variable expansion in the path. What's in the path is used as is, it doesn't get re-interpreted during a search.

事实上，你必须努力工作， ％AppData％，因为您需要执行以下操作：

In fact, you must have worked really hard to get that in as %AppData% since you would need to do something like:

path=^%AppData^%\npm;%path%

如果你只是使用： / p>

If you were to just use:

path=%AppData%\npm;%path%

你会发现实际路径会被替换，所以路径变成：

you'd find the actual path would be substituted, so that the path becomes:

C:\Users\TeamCity\AppData\Roaming\npm;C:\Windows\system32; ...

这篇关于％PATH％在Windows 2008 Server实际上不工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！