我有一些场景中，我需要传递的参数命令行前男友。

I have a number of scenarios in which I need to pass parameters to command line exes.

我已经看到了这些回答在本网站一定程度上，但到目前为止，我还没有看到实，通用如何PowerShell的交易，描述与参数 - 两者都通过了CMD或启动过程。这里有一个简单的例子，它的错误我：

I've seen a number of these answered to some extent on this site, but so far I have not seen solid, general purpose, description of how powershell deals with parameters - both being passed by cmd or start-process. Here's one trivial example which bugs me:

下面是蝙蝠脚本：

CD /D %ProgramFiles(x86)%\Microsoft Visual Studio 10.0\Common7\IDE
devenv /command "File.BatchNewTeamProject C:\stuff\Project51.xml"

我不明白的是什么，是如何PowerShell是分析这些论点。这是什么考虑参数？

What I do not understand, is how powershell is parsing these arguments. What does it consider a "parameter"?

另外，是规则相同的启动过程，因为它们是cmd.exe的？

Also, are the rules the same for start-process as they are for cmd.exe ?

推荐答案

试试这个功能从 PowerShell.com未来 PowerTip它说明调用-Ex的pression 。

Try this function coming from PowerShell.com PowerTip it illustrate the usage of Invoke-Expression.

function Call {
  $command = $Args -join " "
  $command += " 2>&1"
  $result = Invoke-Expression($command)
  $result | 
    %{$e=""}{ if( $_.WriteErrorStream ) {$e += $_ } else {$_} }{Write-Warning $e}
}

这给了：

cd "${env:ProgramFiles(x86)}\Microsoft Visual Studio 10.0\Common7\IDE"
call .\devenv.exe /command "`"File.BatchNewTeamProject C:\stuff\Project51.xml`"

---编辑---

--- Edit ---

有很多事情要在这里说。

There are many things to say here.

第一，你可以找到一个很好的帮助，关于文件试试：

First you can find a good help with "about" files try :

获取帮助约 - *

Get-help about-*

在这个问题你是你有兴趣：

On the subject you are interested you've got:

Get-help about_Quoting_Rules
Get-Help about_Special_Characters
Get-Help about_Escape_Characters
Get-Help about_Parameters

二 CD，DIR，MD 工作，但他们只是别名上的cmdlet这需要不同的参数。

Second CD, DIR, MD works, but they are just aliases on CmdLets which takes different arguments.

第三，以获得环境变量，它不再是的％systemroot％是 $ ENV：SYSTEMROOT 。

Third to get environment variable it's no longer %systemroot% it's $env:systemroot.

第四以从PowerShell中启动一个可执行文件，你可以只输入EXE的名称：

Fourth to start an executable file from powershell you can just type the name of the exe :

PS> notepad c:\temp\test.txt

该命令行是通过PowerShell的PTED所以现在，如果你写的第一间$ P $：

The command line is first interpreted by powerShell so now if you write :

PS> "C:\Windows\System32\notepad.exe"
C:\Windows\System32\notepad.exe

这只是跨preT它作为一个字符串。所以，你可以使用＆放大器;运营商和写

It just interpret it as a string. So you can use the & operator and write

PS> & "C:\Windows\System32\notepad.exe" c:\test.txt

它的工作原理，但：

It works but :

PS> $a = "C:\Windows\System32\notepad.exe c:\test.txt"
PS> & $a

失败，

PS> $a = "C:\Windows\System32\notepad.exe c:\test.txt"
PS> Invoke-Expression $a

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