PowerShell 複製 $MyVariable = $null 若要刪除變數,請使用 Remove-Variable 或Remove-Item。PowerShell 複製 Remove-Variable -Name MyVariable PowerShell 複製 Remove-Item -Path Variable:\MyVariable 您也可以使用一個語句將值指派給多個變數。下列範例會將相同的值指派給多個變數:...
Hit Variable breakpoint on'C:\ps-test\test.ps1:$scriptName'(Write access) test.ps1:11$scriptName=$MyInvocation.PSCommandPath DBG> 顯示變數的$scriptName目前值,也就是$null。 PowerShell複製
PowerShell 複製 $a = "one", $null, "three" $a.count Output 複製 3 如果您透過管線將 $null 變數傳送至 ForEach-Object Cmdlet,它會產生的值 $null,就像針對其他物件所做的一樣PowerShell 複製 "one", $null, "three" | ForEach-Object { "Hello " + $_} ...
but you can't use wildcard characters to find the names of function help and script help articles. To get help for a script that isn't located in a path that's listed in the `$env:Path` environment variable, type the script's path and file name. If you enter the exact name of ...
Set-PSReadLineOption[-EditMode <EditMode>] [-ContinuationPrompt <string>] [-HistoryNoDuplicates] [-AddToHistoryHandler <Func[string,Object]>] [-CommandValidationHandler <Action[CommandAst]>] [-HistorySearchCursorMovesToEnd] [-MaximumHistoryCount <int>] [-MaximumKillRingCount <int>] [-ShowToolTip...
The characters in the array are joined into a string. The characters are separated by the value of the$OFSpreference variable. For more information, seeabout_Preference_Variables. The order of the characters in the array is determined by the ASCII value of the character. For example, the ASCI...
PropertyReferenceNotSupportedInDataSection:不允许在受限语言模式或数据节中使用属性引用。 VariableReferenceNotSupportedInDataSection:正在引用无法在受限语言模式或数据节中引用的变量。 在会话中NoLanguage访问$ExecutionContext.SessionState.LanguageMode时,PowerShell 返回ScriptsNotAllowed错误消息。
The first example assigns a string object, with the characters in the string contained within quotation marks. There’s one aspect of Windows PowerShell that can confuse newcomers. Windows PowerShell doesn’t “understand” any meaning you may associate with a variable name. A variable like $...
to cause it to count characters. I then directly access theCharactersproperty from the object returned from theMeasure-Objectcmdlet and store the number of characters in the$totalvariable. I then display the headerherestring that I previously stored in the$headervariable. This code ...
A set of PowerShell functions you might use to enhance your own functions and scripts or to facilitate working in the console. Most should work in both Windows PowerShell and PowerShell 7, even cross-platform. Any operating system limitations should be h