if( (Get-Process)-and(Get-Service) ) 檢查$null 在if語句中,沒有任何結果或$null值會評估為$false。 檢查$null時,最佳做法是將$null放在左邊。 PowerShell if($null-eq$value) 在PowerShell 中處理$null值時,有相當多的細微差別。 如果您對深入潛水感興趣,我有一篇關於您
if($a-gt2) {Write-Host"The value$ais greater than 2."}elseif($a-eq2) {Write-Host"The value$ais equal to 2."}else{Write-Host("The value$ais less than 2 or"+" was not created or initialized.") } 使用三元运算符语法 PowerShell 7.0 引入了使用三元运算符的新语法。 它遵循 C# 三元...
所在位置行:1字符:12+[fruit]$en=banana+~~~+CategoryInfo:ObjectNotFound:(banana:String)[],CommandNotFoundException+FullyQualifiedErrorId:CommandNotFoundException#当尝试使用非枚举值进行赋值时PSD:/>[fruit]$en=[fruit]::peach由于枚举值无效,无法将Null转换为类型“fruit”。请指定以下枚举值之一,然后重试。...
$a=5, 6, 7, 8, 9 Write-Output "Test collection:" $a Write-Output "`nMembers greater than 7" $a -gt 7 Write-Output "`nMembers greater than or equal to 7" $a -ge 7 Write-Output "`nMembers smaller than 7" $a -lt 7 Write-Output "`nMembers smaller than or equal t...
SetValueInvocationException: Line | 1 | $project.Size = 32 | ~~~ | Exception setting "Size": "The 32 argument is greater than the | maximum allowed range of 16. Supply an argument that is less than | or equal to 16 and then try the command again." SetValueInvocationException: Line...
使用excel或powershell将一长串数字转换为存在范围的范围组这也可以使用Windows Excel 2010+和Excel 365（...
To define a default value for a parameter, type an equal sign and the value after the parameter name, as shown in the following variation of theGet-SmallFilesexample: PowerShell functionGet-SmallFiles($Size=100) {Get-ChildItem$HOME|Where-Object{$_.Length-lt$Size-and!$_.PSIsContainer } } ...
Use comparison operators (-eq,-ne,-gt,-lt,-le,-ge) to compare values and test conditions. For example, you can compare two string values to determine whether they're equal. The comparison operators also include operators that find or replace patterns in text. The (-match,-notmatch,-repla...
If the ErrorLevel parameter is also specified, this cmdlet returns 1 only if the error message severity is also equal to or higher than the value specified for ErrorLevel. Type:SwitchParameter Position:Named Default value:None Required:False ...
# if the user has a license that is not equal to the new license switch it out if (!$skipUser) { $NewLicenseExc = $O365LicenseType $ErrHandle = "" Try { $userObject=Get-MsolUser -UserPrincipalName $UPN -erroraction stop if (!$userObject.isLic...