运行if语句时,PowerShell 会将<test1>条件表达式计算为 true 或 false。 如果<test1>为 true,<statement list 1>则运行,PowerShell 退出 语句if。 如果<test1>为 false,则 PowerShell 将计算条件语句指定的<test2>条件。 有关布尔计算的详细信息,请参阅about_Booleans。
Also, by default Powershell already includes the Boolean variables $True and $False to represent True and False. You can use them in any session or script. Evan7191(Evan7191)July 17, 2017, 1:09pm9 Example: If (condition is true) { return $True } If (negative condition is true) { r...
PowerShell 複製 PS> [int]$number = $null PS> $number 0 PS> [bool]$boolean = $null PS> $boolean False PS> [string]$string = $null PS> $string -eq '' True 有些類型沒有從 $null的有效轉換。 這些類型會產生 Cannot convert null to type 錯誤。PowerShell 複製 ...
Boolean\' required by parameter 'Enabled' Cannot convert system.object to the type system collection idictionary Cannot convert the "System.Collections.ArrayList" Cannot convert the value of type "System.TimeSpan" to type "System.DateTime". Cannot convert value to type System.Xml.XmlDocument Cannot...
powershell 值为False，条件为if语句中的-eq $true，并且通过评估函数，此刻你只是检查它是否存在，尝试...
PS> cmd /c echo"a|b"'b'is not recognized as an internal or external command, operable program or batch file. PS> cmd /c --% echo"a|b""a|b" 备注 使用PowerShell cmdlet 时不需要停止分析令牌。 但是,将参数传递给 PowerShell 函数可能很有用,该函数旨在使用这些参数调用本机命令...
The if() statement highlights what I said in my previous post which is that the value held in the string, $Stat, is not implicitly converted to its Boolean equivalent. Rather, PowerShell sees some random old string and performs an existence - or "not null" - check. ...
问Path变量上的If语句- powershell - true/false测试EN基本上，我想检查目录是否存在，如果不存在，则...
The if() statement highlights what I said in my previous post which is that the value held in the string, $Stat, is not implicitly converted to its Boolean equivalent. Rather, PowerShell sees some random old string and performs an existence - or "not null" - check. ...
Workfl... WriteLocked Property System.Boolean Write ... Zone Property Microsoft.SharePoint.Admini... 重要 不要错过使用管道将 Get-SP<名词> cmdlet 输送到Get-Member cmdlet 的机会。有时,对象能够检索的信息惊讶。 实际环境:运行 Windows PowerShell 命令时的性能问题 如果要在服务场中查找所有...