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 $global:a="one"Get-Variablea |Format-List* ...
functionAdd-Numbers([int]$One, [int]$Two) {$One+$Two} 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 va...
Don't modify the global $ErrorActionPreference variable 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 the Error...
$Env:<variable-name> ="<new-value>" 例如,若要创建环境变量,请执行以下操作Foo: PowerShell复制 $Env:Foo='An example' 由于环境变量始终是字符串,因此可以像使用包含字符串的任何其他变量一样使用它们。 例如: PowerShell复制 "The 'Foo' environment variable is set to:$Env:Foo"$Env:Foo+='!'$E...
功能: Function 脚本: Script 命令: Cmdlet Tips : PowerShell 命令是一个通用术语,通常用于指代 PowerShell 中任何类型的命令,不管是 cmdlet、函数还是别名。 1.在 PS 6 之前 sc 是 Set-Content cmdlet 的别名, 因此若要在 ps6 之前的 PowerShell 版本中运行 sc.exe 命令,必须使用包含文件扩展名 exe的完整...
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 $env:0s="Linux" # 临时赋值变量 设置永久环境变量(.net方式) [environment]::setenvironmentvariable("PATH","D:","User") PowerShell脚本执行策略 get-execut...
function Main { (…) HelperFunction (…) } function HelperFunction { (…) } . Main 3. 如何调用script 路径有空格时需使用&: & "C:Script DirectoryRun-Commands.ps1" Parameters 当前路径:.Run-Commands.ps1 Parameters 4. 理解Function的Scope ...
functionStart-MyService($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 PowerShe...
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-...