$a=12# System.Int32$a="Word"# System.String$a=12,"Word"# array of System.Int32, System.String$a=Get-ChildItemC:\Windows# FileInfo and DirectoryInfo types 您可以使用型別屬性和轉換表示法,確保變數只能包含可以轉換成該類型的特定物件類型或物件。 如果您嘗試指派另一個類型的值,PowerShell 會嘗試...
VariableReferenceNotSupportedInDataSection:无法在受限语言模式下引用或正在引用数据节的变量。 在会话中NoLanguage运行$ExecutionContext.SessionState.LanguageMode命令时,PowerShell 将返回ScriptsNotAllowed错误消息。 ScriptsNotAllowed:此 runspace 不支持语法。 这可能是因为它处于无语言模式。
Write-Host "The value of the `$pshome variable is $pshome." See what we’ve done here? We’ve enclosed the entire string in double quote marks; therefore you’d expect PowerShell to echo back the value of each instance of $pshome. But notice the funny little character (the “...
Set-Variable[-Name] <String[]> [[-Value] <Object>] [-Include <String[]>] [-Exclude <String[]>] [-Description <String>] [-Option <ScopedItemOptions>] [-Force] [-Visibility <SessionStateEntryVisibility>] [-PassThru] [-Scope <String>] [-WhatIf] [-Confirm] [<CommonParameters>] ...
修复命令运行时,以便 StopUpstreamCommandsException 不会填充到 -ErrorVariable 中 (#10840) 将本机命令的输出编码设置为 [Console]::OutputEncoding (#10824) 支持示例中的多行代码块 (#10776)(感谢 @Greg-Smulko!) 将Culture 参数添加到 Select-String cmdlet (#10943)(感谢 @iSazonov!) 修复带有尾随...
Enter a variable that contains the objects, or type a command or expression that gets the objects. Required? true Position? 0 Default value None Accept pipeline input? True (ByValue) Accept wildcard characters? false -Name <String[]> Specifies the service names for the service to be started...
When you're just defining a string with no variables inside, always use single quotes. Single quotes don't try to expand any variables inside and treat the string literally. This is atinybit faster to process, eliminates the possibility of unwanted variable expansion, and is just more intentio...
The function contains two commands. The$PSHelpvariable stores the path to the PowerShell help files.$PSHOMEis the PowerShell installation directory with the subdirectoryen-USthat specifies each*.txtfile in the directory. TheSelect-Stringcommand in the function uses thePathandPatternparameters. ThePa...
此示例演示脚本ConvertFrom-StringData节中使用的DATA命令。 DATA节下面的语句向用户显示该文本。 PowerShell $TextMsgs=DATA{ConvertFrom-StringData@' Text001 = The $Notebook variable contains the name of the user's system notebook. Text002 = The $MyNotebook variable contains the name of the user's...
Thanks to the single quote marks that’s going to return the following string (literal) value: $pshome Needless to say, that’s all great. But what if we wanted to echo back the following: The value of the $pshome variable is C:\WINDOWS\system32\WindowsPowerShell\v1.0. ...