[System.IO.Directory]::CreateDirectory('full path to directory')

这将在内部检查目录是否存在，如果没有目录，则创建一个。只有一行代码和本地的。net方法可以完美地工作。

我希望能够方便地让用户为PowerShell创建一个默认配置文件来覆盖一些设置，并以以下一行程序结束(多个语句是可以的，但可以粘贴到PowerShell并立即执行，这是主要目标):

cls; [string]$filePath = $profile; [string]$fileContents = '<our standard settings>'; if(!(Test-Path $filePath)){md -Force ([System.IO.Path]::GetDirectoryName($filePath)) | Out-Null; $fileContents | sc $filePath; Write-Host 'File created!'; } else { Write-Warning 'File already exists!' };

为了可读性，以下是我在.ps1文件中如何做的:

cls; # Clear console to better notice the results
[string]$filePath = $profile; # Declared as string, to allow the use of texts without plings and still not fail.
[string]$fileContents = '<our standard settings>'; # Statements can now be written on individual lines, instead of semicolon separated.
if(!(Test-Path $filePath)) {
  New-Item -Force ([System.IO.Path]::GetDirectoryName($filePath)) | Out-Null; # Ignore output of creating directory
  $fileContents | Set-Content $filePath; # Creates a new file with the input
  Write-Host 'File created!';
}
else {
  Write-Warning "File already exists! To remove the file, run the command: Remove-Item $filePath";
};

$mWarningColor = 'Red'

<#
.SYNOPSIS
    Creates a new directory. 
.DESCRIPTION
    Creates a new directory. If the directory already exists, the directory will
    not be overwritten. Instead a warning message that the directory already
    exists will be output.
.OUTPUT
    If the directory already exists, the directory will not be overwritten.
    Instead a warning message that the directory already exists will be output.
.EXAMPLE    
    Sal-New-Directory -DirectoryPath '.\output'
#>
function Sal-New-Directory {
    param(
        [parameter(mandatory=$true)]
        [String]
        $DirectoryPath
    )
    $ErrorActionPreference = "Stop"
    try {
        if (!(Test-Path -Path $DirectoryPath -PathType Container)) {

            # Sal-New-Directory is not designed to take multiple 
            # directories. However, we use foreach to supress the native output
            # and substitute with a custom message.
            New-Item -Path $DirectoryPath -ItemType Container | `
              foreach {'Created ' + $_.FullName}
        } else {
            Write-Host "$DirectoryPath already exists and" `
                        "so will not be (re)created." `
                        -ForegroundColor $mWarningColor
        }
    } finally {
        $ErrorActionPreference = "Continue"
    }
}

“Sal”只是我自己的库的一个任意前缀。你可以移除它，或者用你自己的替换它。

另一个例子(放在这里，否则会破坏stackoverflow语法高亮显示):

Sal-New-Directory -DirectoryPath ($mCARootDir + "private\")

例如，在脚本的文件夹中创建一个“Reports”文件夹。

$ReportsDir = $PSScriptRoot + '\Reports'
$CreateReportsDir = [System.IO.Directory]::CreateDirectory($ReportsDir) 

$path = "C:\temp\NewFolder"
If(!(test-path -PathType container $path))
{
      New-Item -ItemType Directory -Path $path
}

Test-Path -PathType容器检查路径是否存在，是否为目录。如果没有，它将创建一个新目录。如果路径存在但是一个文件，New-Item将引发一个错误(如果您有风险，可以使用-force参数覆盖该文件)。

我也有同样的问题。你可以这样使用:

$local = Get-Location;
$final_local = "C:\Processing";

if(!$local.Equals("C:\"))
{
    cd "C:\";
    if((Test-Path $final_local) -eq 0)
    {
        mkdir $final_local;
        cd $final_local;
        liga;
    }

    ## If path already exists
    ## DB Connect
    elseif ((Test-Path $final_local) -eq 1)
    {
        cd $final_local;
        echo $final_local;
        liga;  (function created by you TODO something)
    }
}