PSC:\WINDOWS\system32>$myStr="This variables defined by user"PSC:\WINDOWS\system32>$myStrThis variables defined by userPSC:\WINDOWS\system32>$myStr="user has changed the value of this variables"PSC:\WINDOWS\system32>$myStruser has changed the value of this variables 在定义和使用变量时,可...
有关详细信息、列表和自动变量的说明,请参阅about_Automatic_Variables。 首选项变量:首选项变量存储 PowerShell 的用户首选项。 这些变量由 PowerShell 创建,并使用默认值填充。 用户可以更改这些变量的值。 例如,该$MaximumHistoryCount变量会确定会话历史记录中的最大条目数。
When no data type is specified, PowerShell creates each array as an object array (System.Object[]). To determine the data type of an array, use the GetType() method. For example:PowerShell Copy $A.GetType() To create a strongly typed array, that is, an array that can contain only...
不要将变量名称语法${<name>}与$()子表达式运算符相混淆。 有关详细信息,请参阅about_Variables的“变量名称”部分。 在以下示例中,返回 PropName 的值。 PowerShell $a= @{ PropName =100} ${a}?.PropName Output 100 以下示例将返回 null,而不尝试访问成员名称PropName。
PowerShell defines the following categories of variables: static variables, instance variables, array elements, Hashtable key/value pairs, parameters, ordinary variables, and variables on provider drives. The subsections that follow describe each of these categories. In the following example PowerShell ...
Specifies a set of sqlcmd scripting variables for use in the sqlcmd script, and sets a values for the variables. Use a Windows PowerShell array to specify multiple variables and their values; alternatively, use a Hashtable where the key represent the variable name and the value the variable...
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 ...
It doesn't change the structure of the error object that's stored in the $Error automatic variable. For information about the $Error automatic variable, see about_Automatic_Variables. The following command takes the ErrorRecord object associated with the most recent error in the error array...
Describes variables that store state information for and are created and maintained by PowerShell. Conceptually, most of these variables are considered to be read-only. Even though they can be written to, for backward compatibility they should not be written to. Here is a list of the autom...
Fix formatting of the XML comment for SteppablePipeline.Clean() (#24941) Use Environment.ProcessId in SpecialVariables.PID (#24926) (Thanks @fMichaleczek!) Replace char[] array in CompletionRequiresQuotes with cached SearchValues (#24907) (Thanks @ArmaanMcleod!) Update IndexOfAny calls with...