$Env:<variable-name> = "<new-value>" 例如,若要建立 Foo 環境變數: PowerShell 複製 $Env:Foo = 'An example' 因為環境變數一律是字串,所以您可以使用它們,就像包含字元串的任何其他變數一樣。 例如: PowerShell 複製 "The 'Foo' environment variable is set
例如,若要建立名為 this{value}is 類型的變數: PowerShell 複製 ${this`{value`}is} = "This variable name uses braces and backticks." ${this`{value`}is} Output 複製 This variable name uses braces and backticks. 變數和範圍 根據預設,變數只能在建立變數的範圍中使用。 例如,您在函式中...
2.帮助参数 (?):在任何 cmdlet 上指定 -? 参数时,PowerShell 将显示该 cmdlet 的帮助。 Get-Service -? 3.通用参数: 参数由 PowerShell 引擎控制, 通用参数的行为方式始终相同。 通用参数: WhatIf、Confirm、Verbose、Debug、Warn、ErrorAction、ErrorVariable、OutVariable 和 OutBuffer 4.建议的参数名称:Power...
TypeName: System.String PowerShell 帮助文档说明,通过管道将字符串传输到Stop-Service时,它会按值绑定到Name参数。 进行实际测试以查看此操作:通过管道将字符串w32time传递给Stop-Service。 此示例演示如何Stop-Service将字符串w32time作为要停止的服务的名称进行处理。 执行以下命令,观察此绑定和命令的执行过程。
Remove-Variable num1 PowerShell自动化变量 常用的变量 $pid $home PowerShell环境变量 ls env: # 查看当前环境变量 $env:os # 输出某个键的值 $env:0s="Linux" # 临时赋值变量 设置永久环境变量(.net方式) [environment]::setenvironmentvariable("PATH","D:","User") PowerShell脚本执行策略 get-execut...
New-[-Description <String>] [-Scope <String>] [-Credential <PSCredential>] [-Verbose] [-Debug ] [-ErrorAction <ActionPreference>] [-ErrorVariable <String>] [-OutVariable <St ring>] [-OutBuffer <Int32>] [-WhatIf] [-Confirm]
Checking if a string is NULL or EMPTY is very common requirement in Powershell script. If we don’t do that we will end up with run time errors if we try to perform some operation on that string variable which is empty or null. So the question now is, how to check it?
New-Variable 参考 模块: Microsoft.PowerShell.Utility 创建新变量。 语法 PowerShell复制 New-Variable[-Name] <String> [[-Value] <Object>] [-Description <String>] [-Option <ScopedItemOptions>] [-Visibility <SessionStateEntryVisibility>] [-Force] [-PassThru] [-Scope <String>] [-WhatIf] [-...
While the first method is preferred, there's no difference between these two methods. When you run the function, the value you supply for a parameter is assigned to a variable that contains the parameter name. The value of that variable can be used in the function. ...
此示例演示如何使用管道运算符(|)将字符串发送到ConvertFrom-StringData。$Here变量的值被传递到ConvertFrom-StringData,而结果存储在$Hash变量中。 PowerShell $Here=@' Msg1 = The string parameter is required. Msg2 = Credentials are required for this command. Msg3 = The specified variable doesn't exist...