如何将参数或变量从一个Powershell脚本传递给另一个? [英] How do I pass arguments or variables from one powershell script to another?

问题描述

在cmd中，我可以通过在声明要运行的bat文件之后列出它们来将参数从一个蝙蝠传递到另一个蝙蝠.然后，即将运行的蝙蝠以％1，％2，％3等接收它们.可以在Powershell中完成吗?

In cmd I could pass arguments from one bat to another by listing them after the to-be-run bat file was stated. Then the to-be-run bat received them as %1, %2, %3, etc. Can this be done in Powershell?

我有一个ps1脚本script1，它提示用户输入位置.该脚本已处理完毕.该位置存储为变量； $ loc.在第一个脚本中，有一点是用户可以选择一个选项，该选项将运行另一个具有更多选项的ps1脚本script2.我想将$ loc从script1传递到script2.

I have one ps1 script,script1, that prompts the user for a location. That script has been taken care of. That location is stored as a variable; $loc. In the first script, there is a point that the user can choose an option that will run another ps1 script, script2, that has itself more options. I want to pass $loc to the script2 from script1.

在script1中，我尝试了以下操作:

In script1 I have tried the following:

param ($loc)
start-process "\script2.ps1" -ArgumentList $loc
start-process "\script2.ps1" -$loc
start-process "\script2.ps1"

然后是脚本2

args[0]
$loc

我知道我可能只是不了解传递的参数.问题是另一个选择称为蝙蝠脚本.我使用的是-ArgumentList $ loc，它可以通过.我在蝙蝠脚本中使用"Set loc =％1"来获取该参数

I know I'm probably just not understanding passing arguments. Thing is that another options calls a bat script. That one I use -ArgumentList $loc and it passes that fine. I pick that argument up in the bat script using "Set loc = %1"

推荐答案

您无需Start-Process即可从另一个PowerShell脚本运行一个PowerShell脚本.只需使用所需的任何参数调用第二个脚本即可:

You don't need Start-Process to run one PowerShell script from another PowerShell script. Simply call the second script with whatever parameters you want:

# script1.ps1

$loc = Read-Host 'Enter location'

C:\path\to\script2.ps1 $loc 'other parameter'

在第二个脚本中，例如可以通过$args数组访问参数列表:

In the second script the argument list can be accessed for instance via the $args array:

# script2.ps1

Write-Host $args[0]
Write-Host $args[1]

您还可以这样定义命名参数:

You could also define named parameters like this:

# script2.ps1

Param($Location, $Foo)

Write-Host $Location
Write-Host $Foo

或更像这样(更完整):

or (more complete) like this:

# script2.ps1

[CmdletBinding()]
Param(
  [Parameter(Mandatory=$true)]
  [string]$Location,
  [Parameter(Mandatory=$false)]
  [string]$Foo
)

Write-Host $Location
Write-Host $Foo

定义命名参数使您可以传递参数而不必担心它们的顺序:

Defining named parameters allows you to pass arguments without having to worry about their order:

C:\path\to\script2.ps1 -Foo 'other parameter' -Location $loc

或自动具有参数

or to have parameters automatically validated without having to implement the checks in the function body:

# script2.ps1

Param(
  [ValidateSet('a', 'b', 'c')]
  [string]$Location,
  [ValidatePattern('^[a-z]+$')]
  [string]$Foo
)

Write-Host $Location
Write-Host $Foo

如果传递的参数比定义的命名参数多，则这些附加参数将存储在$args数组中:

If more arguments are passed than named parameters were defined those additional arguments are stored in the $args array:

PS C:\> cat test.ps1
Param($Foo)

Write-Host $Foo
Write-Host $args[0]
PS C:\> .\test.ps1 'foo' 'bar'
foo
bar

有关更多信息，请参见 Get-Help about_Functions_Advanced_Parameters .

For more information see Get-Help about_Functions_Advanced_Parameters.

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