Clear-Variable:删除一个或多个变量的值 Remove-Variable:删除一个或多个变量 由于变量是一个项 (§3.3),所以它可以被大多数与项相关的 cmdlet 操作。 表示变量的对象的类型在 §4.5.3中介绍。 变量对象存储在驱动器变量上:(§3.1)。 3.2 工作位置 当前工作位置 是命令指向的默认位置。 如果在调用命令时未提...
PS> $empty = $null PS> $empty[0] Error: Cannot index into a null array. 因此,在尝试访问数组中的元素之前,请确保数组不是 $null。Count数组和其他集合具有计数属性,可告知数组中有多少项。PowerShell 复制 PS> $data.count 4 PowerShell 3.0 向大多数对象添加了计数属性。 你可以使用单个对象,它应该...
To create a strongly typed array, that is, an array that can contain only values of a particular type, cast the variable as an array type, such as string[], long[], or int32[]. To cast an array, precede the variable name with an array type enclosed in brackets. For example:Power...
Positional parameter values are assigned to the $args array variable. The value that follows the function name is assigned to the first position in the $args array, $args[0]. The following Get-Extension function adds the .txt filename extension to a filename that you supply: PowerShell ...
$StringArray = "MYVAR1='String1'", "MYVAR2='String2'" Invoke-Sqlcmd -Query "SELECT `$(MYVAR1) AS Var1, `$(MYVAR2) AS Var2" -Variable $StringArray Var1 Var2 --- --- String1 String2 此命令會使用字元字串數位做為 Variable 參數的輸入。 數位會定義多個 SQLCMD 變數。 在SELECT...
You also can create an array by using the output from a command. For example: PowerShell $users=Get-ADUser-Filter*$files=Get-ChildItemC:\ You can verify whether a variable is an array by using theGetType()method on the variable. TheBaseTypelisted will beSystem.Array. ...
Referencing Variables and Variable Values Removing Items From Arrays The String’s the Thing Three Things You Might Not Know About Windows PowerShell Functions Using Windows PowerShell “Here-Strings” Using the Range Operator in Wildcard Queries What Is (and What Isn’t) in Our Array? Windows ...
Example 3: Invoke a script and pass in variable values from a string PowerShell Copy $StringArray = "MYVAR1='String1'", "MYVAR2='String2'" Invoke-Sqlcmd -Query "SELECT `$(MYVAR1) AS Var1, `$(MYVAR2) AS Var2" -Variable $StringArray Var1 Var2 --- --- String1 String...
Optimize the += operation for a collection when it's an object array (#23901) (Thanks @jborean93!) Allow redirecting to a variable as experimental feature PSRedirectToVariable (#20381) General Cmdlet Updates and Fixes Change type of LineNumber to ulong in Select-String (#24075) (Thanks ...
1、当前文件夹运行命令 进入存放脚本文件的命令，然后执行：.\psl1脚本文件 我的脚本文件存放在F盘的...