Intuitively, you would assume that the variable named $computer that you set in a function could be accessed in the script when the function is complete. However, that's not the case. Variables have a specific scope and are limited in how they interact between scopes. The ...
function [<scope-modifier>:]<name> {<function-body>} 下列命令不使用範圍修飾詞,會在目前或本機範圍中建立變數: PowerShell $a="one" 若要在全域範圍中建立相同的變數,請使用範圍global:修飾詞: PowerShell $global:a="one"Get-Variablea |Format-List* ...
Don't modify the global$ErrorActionPreferencevariable unless absolutely necessary. If you change it in a local scope, it reverts to the previous value when you exit that scope. If you're using something like .NET directly from within your PowerShell function, you can't specify theErrorAction...
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 $env:0s="Linux" # 临时赋值变量 设置永久环境变量(.net方式) [environment]::setenvironmentvariable("PATH","D:","User") PowerShell脚本执行策略 get-execut...
新创建的变量会在当前作用域中覆盖之前传递的参数,原参数值不变,为改变传递到函数中的参数值,可以使用Get-Variable和Set-Variable在复杂的作用域间更改变量值。下例创建的函数用来交换两个变量值:展开表 PS C:\> function SwapValue($first, $second) >> { >> $firstValue = Get-Variable $first -scope ...
Get-Variable[[-Name] <String[]>] [-ValueOnly] [-Include <String[]>] [-Exclude <String[]>] [-Scope <String>] [<CommonParameters>] 说明 Get-Variablecmdlet 获取当前控制台中的 PowerShell 变量。 通过指定ValueOnly参数可以只检索这些变量的值,还可以按名称筛选返回的变量。
functionStart-MyService($Context){...}$status="standby"functionMock-TestPeerWorkMode{returnGet-Variable-Namestatus-Scopescript}Set-Alias-NameTest-PeerWorkMode-ValueMock-TestPeerWorkModeStart-MyService$mockContext 熟悉UNIX shell (比如 bash)的朋友可能会觉得这没什么,Bash 也有很好用的别名。但是 PowerS...
test-path variable:num1 # 返回的是布尔值 删除变量名 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("...
For PowerShell to see a file extension as executable in the current session, you must add the extension to the $env:PATHEXT environment variable. See also - about_Aliases - about_Functions - about_Path_Syntax - Alias-Provider - Function-Provider - Get-Command - Import-Module - Import-...
Improve variable type inference (#19830) (Thanks @MartinGC94!) Fix parameter completion when script requirements fail (#17687) (Thanks @MartinGC94!) Improve the completion for attribute arguments (#25129) (Thanks @MartinGC94!) Fix completion that relies on pseudobinding in script blocks (#251...