Don't modify the global $ErrorActionPreference variable unless absolutely necessary. If you change it in a local scope, it reverts to the previous value when you exit that scope. If you're using something like .NET directly from within your PowerShell function, you can't specify the Error...
若要在不同的范围内运行脚本,可以指定一个范围,例如 Global 或 Local,也可以点源该脚本。 点溯源功能允许在当前范围而不是脚本范围内运行脚本。 运行 dot sourced 的脚本时,脚本中的命令将像在命令提示符处键入一样运行。 脚本创建的函数、变量、别名和驱动器是在你工作的范围中创建的。 脚本运行后,可以使用创建...
functionglobal:Get-DependentSvs{Get-Service|Where-Object{$_.DependentServices} } 当函数在全局范围内时,可以在脚本、函数和命令行中使用该函数。 函数创建新的范围。 在函数中创建的项(如变量)仅存在于函数范围内。 有关详细信息,请参阅about_Scopes。
与Get-Variable不同,Get-Command不支持作用域参数。一旦在当前作用域中覆盖,则无法从父作用域中得到函数。另外,可以在函数名前使用global、script、local或private作用域标识符。下例在global和local作用域中声明同名函数,然后用命名空间前缀区别二者:展开表
/How to call a function in another PowerShell script #TYPE System.Data.DataRow Is 1st line of SSMS To CSV %username% variable in Powershell + CategoryInfo : NotSpecified: (:String) [], RemoteException <' operator is reserved for future use $_ '-msDS-cloudExtensionAttribute1' attribute not...
Set-Variable -scope Global -name SqlServerIncludeSystemObjects -Value $false Set-Variable -scope Global -name SqlServerMaximumTabCompletion -Value 1000 # Load the snapins, type data, format data Push-Location cd $sqlpsPath Add-PSSnapin SqlServerCmdletSnapin100 ...
#Option 1: Using a global scope $global:DatastoreName = $null # declared at top and used anywhere in your script function GetDatastore { $Datastore = Get-Datastore $global:DatastoreName = $Datastore.name } Option 2: return the value of the desired variable outside the function...
This variable specifies the file path for the log file where the script will write the operation details. # Set the initial timeout value$timeout= 5 The script sets an initial timeout value of 5 seconds. This timeout will be increased in case of a timeout er...
When either type of error occurs during execution, it is logged to a global variable called $error. This variable is a collection of PowerShell Error Objects with the most recent error at index 0. On a freshly initialized PowerShell instance (no errors have occurred yet) the $error variable...
function global:ADD-LOGFILE{ [CmdletBinding()] PARAM( [STRING[]]$Folder=”C:\PowerShell”, [STRING[]]$Preface=”Logfile”, [STRING[]]$Extension=”.log” ) Cmdlet binding will bind the parameters in the same fashion as compiled cmdlets. This means parameters that by default are available ...