$str="Have a nice day."[string]::IsNullOrWhiteSpace($str) Output: False Use the$nullVariable to Check if a String Variable Is Not Null or Empty in PowerShell $nullis one of the automatic variables in PowerShell, which represents NULL. You can use the-eqparameter to check if a string ...
helpGet-Help-ParameterName 說明信息顯示Name參數是位置參數,且在使用時,必須在第一個位置(位置零)指定。 Output -Name <System.String> Gets help about the specified command or concept. Enter the name of a cmdlet, function, provider, script, or workflow, such as `Get-Member`, a conceptual article...
functionTest-MrParameter{param($ComputerName)Write-Output$ComputerName} 以下函数可查询系统中的所有命令,并返回带有特定参数名称的命令编号。 PowerShell functionGet-MrParameterCount{param( [string[]]$ParameterName)foreach($Parameterin$ParameterName) {$Results=Get-Command-ParameterName$Parameter-ErrorActionSil...
类型: SwitchParameter Position: Named 默认值: False 必需: False 接受管道输入: False 接受通配符: False-CaseSensitive指示cmdlet 匹配项区分大小写。 默认情况下,匹配项不区分大小写。 展开表 类型: SwitchParameter Position: Named 默认值: False 必需: False 接受管道输入: False 接受通配符: False-...
Stringify ErrorRecord with empty exception message to empty string (#24949) (Thanks @MatejKafka!) Add completion single/double quote support for -PSEdition parameter for Get-Module (#24971) (Thanks @ArmaanMcleod!) Error when New-Item -Force is passed an invalid directory name (#24936) (Than...
string to System.Management.Automation.ScriptBlock Cannot use Set-Acl properly despite being file owner and being a member of Administrators Group. Cannot validate argument on parameter 'Name'. The argument is null or empty. Provide an argument that is not null or empty, and then try the ...
If you simply remove the[string]type then it will work as expected: function f2 { param ( $x ) return $x } $null -eq (f2 -x $null) There is no value in declaring a parameter as type string because all classes in .Net have to derive from theObjectclass. Therefore every class impl...
[Parameter(Mandatory=$true)] [ValidateNotNullorEmpty()] [System.String]$ServerName, [System.String]$DomainName, [System.String]$CARootName, [System.String]$CAServerFQDN, [System.String]$CertSubject, [System.String]$SMBShare, [Parameter(Mandatory=$true)] [ValidateNotNullorEmpty()] [...
I found the same thing for the-DelegatedOrganizationparameter as well! If you use the Customer Tenant ID you get the same error: Get-Mailbox -ResultSize Unlimited Returns:"Write-ErrorMessage : Expired or Invalid pagination request. Default Expiry time is 00:30:00" ...
Select-String C:\Scripts\Test.txt -pattern "CTP" As you can see, this is a very simple little command: we just call Select-String followed: 1) by the item we want to search (C:\Scripts\Test.txt); and 2) the–patternparameter (used to specify the target text; that is, the value...