带有参数 * 和 * 函数的 Powershell 脚本

Question

我想编写一个接受参数并使用函数的 powershell 脚本。

我试过这个:

param
(
  $arg
)

Func $arg;


function Func($arg)
{
  Write-Output $arg;
}

但我得到了这个:

The term 'Func' is not recognized as the name 
of a cmdlet, function, script file, or operable program. 
Check the spelling of the name, or if a path was included, 
verify that the path is correct and try again.
At func.ps1:6 char:5
+ Func <<<<  $arg;
    + CategoryInfo          : ObjectNotFound: (Func:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

好吧，我想。我会试试这个:

function Func($arg)
{
  Write-Output $arg;
}


param
(
  $arg
)

Func $arg;

但是后来，我得到了这个:

The term 'param' is not recognized as the name 
of a cmdlet, function, script file, or operable program. 
Check the spelling of the name, or if a path was included, 
verify that the path is correct and try again.
At C:\Users\akina\Documents\Work\ADDC\func.ps1:7 char:10
+     param <<<<
    + CategoryInfo          : ObjectNotFound: (param:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

我所要求的可行吗？还是我的要求不合理？

Answer 1

脚本中的 param 块必须是第一个非注释代码。之后，您需要在调用之前定义该函数，例如:

param
(
  $arg
)

function Func($arg)
{
  $arg
}

Func $arg

在您的示例中，Write-Output 是不必要的，因为默认行为是将对象输出到输出流。