PowerShell 複製 param( [ValidateDrive("C", "D", "Variable", "Function")] [string]$Path ) ValidateUserDrive 驗證屬性ValidateUserDrive 屬性會指定參數值必須在磁碟驅動器中User表示。 如果路徑參考不同的磁碟驅動器,PowerShell 會產生錯誤。 驗證屬性只會測試路徑的磁碟驅動器前置詞是否存在。
# Define the types to export with type accelerators. $ExportableTypes =@( [DefinedTypeName] ) # Get the internal TypeAccelerators class to use its static methods. $TypeAcceleratorsClass = [psobject].Assembly.GetType( 'System.Management.Automation.TypeAccelerators' ) # Ensure none of the types wo...
Enter a variable that contains a TypeData object or a command that gets a TypeData object, such as a Get-TypeData command. You can also pipe a TypeData object to Update-TypeData. This parameter was introduced in Windows PowerShell 3.0. Expand table Type: TypeData[] Position: 0 Default...
Para revisar as variáveis contidas na memória examinando o conteúdo da unidade do PowerShell chamada Variable, use o seguinte comando:PowerShell Copiar Get-ChildItem Variable: Você também pode revisar as variáveis na memória usando o cmdlet Get-Variable :PowerShell Copiar ...
Inside my function, I've retrieved the Win32_OperatingSystem information and stored it in the variable $wmi. Using that information is as simple as referring to properties of $wmi. For example, to get the BuildNumber property, I would use this:...
A cast can also be performed when a variable is assigned to usingcast notation. Comma operator, As a binary operator, the comma creates an array or appends to the array being created. In expression mode, as a unary operator, the comma creates an array with just one member. Place the com...
Now, I need to define thenumberOfDoorsproperty. It could be 2, 4, 5, or more. So I also cast it as an[int]. But because the value could be a lot of different things, I do not make it static. This is shown here: [int]$numberOfDoors ...
The answer is to define a variable to hold the argument value, and just use that in the place you used to write the command argument: $filename = "c:\path\to\other\file.txt" attrib +R $filename You can use the same technique when you call a PowerShell cmdlet, script, or function...
I’ll only see my original Windows PowerShell process. The extra Windows PowerShell process appeared because a standard background job spawns a new, separate Windows PowerShell process in which it runs the script block. That’s why the variable we defined couldn’t be found when we ran the...
To make it easier, when you import the module it will create a global variable that is a hash table of common special characters. Because it is a hashtable you can add ones you also use. The names are the same as used in CharMap.exe. Don't let the naming confuse you. It may say...