1. 进入Powershell环境 开始--运行--powershell 开始--运行--cmd--powershell 不同系统内置的powershell系统版本是不一样的 查看版本：$psversiontable 2. powershell功能特别强大 使用方便 命令命名方式简单：动词+名词 >get-service 获取系统服务 >get-help get-service 查看命令的帮助信息 面向对象 绑定...
If you already have the.NET Core SDKinstalled, you can install PowerShell as a.NET Global tool. Copy dotnet tool install --global PowerShell The dotnet tool installer adds$HOME\.dotnet\toolsto your$env:PATHenvironment variable. However, the currently running shell doesn't have the updated$env...
MetadataError: The attribute cannot be added because variable TicketIDFromInt with value 43 would no longer be valid. AllowNull 验证属性 AllowNull 属性允许强制参数的值为 $null。 以下示例声明一个可以具有 null 值的哈希表 ComputerInfo 参数。 PowerShell 复制 param( [Parameter(Mandator...
$property # property name is a variable $h1 = @{ FirstName = "James"; LastName = "Anderson"; IDNum = 123 } $h1.FirstName # designates the key FirstName $h1.Keys # gets the collection of keys [int]::MinValue # get static property [double]::PositiveInfinity # get static ...
Windows PowerShell 中的變數名稱一律以貨幣符號 ($) 開頭,而且可以包含字母、數字、符號,甚至空格的混合 (不過若是使用空格,您必須以括號括住變數,例如 ${My Variable} = "Hello")。此範例建立一個名為 $var 的新變數,並為其指派初始值 "Hello"。因為在此範例中的值是一串字元,所以 Windows PowerShell 會...
just because you were able to find the profile doesn’t mean it actually exists. $profile is simply a built-in variable that contains the full path to where the profile will be if there is one; the file doesn’t actually have to exist, and, by default. it doesn’t. If you want a...
# Set mandatory variables for the SQL Server provider Set-Variable -scope Global -name SqlServerMaximumChildItems -Value 0 Set-Variable -scope Global -name SqlServerConnectionTimeout -Value 30 Set-Variable -scope Global -name SqlServerIncludeSystemObjects -Value $false Set-Variable -scope Global -na...
TheWATCHsection allows you to add a watch for any variable or expression. Simply click the+button (highlighted in the following screenshot), and type the variable name or a PowerShell expression: This values will always be evaluated, if possible. Keep in mind that the variables entered as a...
# Set mandatory variables for the SQL Server provider Set-Variable -scope Global -name SqlServerMaximumChildItems -Value 0 Set-Variable -scope Global -name SqlServerConnectionTimeout -Value 30 Set-Variable -scope Global -name SqlServerIncludeSystemObjects -Value $false Set-Variable -scope Global -na...
The runspace allows the hosting application to manipulate the session with calls to theGetVariableandSetVariablemethods of theSessionStateProxyobject for the session. Be aware that this object does not represent a complete session state, but only exposes a few methods that allow the hosting applicati...