= Not equal <> Not equal < Less than > Greater than <= Less than or equal >= Greater than or equal LIKE Wildcard match IS Evaluates null ISNOT Evaluates not null ISA Evaluates a member of a WMI class 还有其他运算符,但这些运算符用于进行比较。 例如,以下查询从 Win32_Process 类中进程...
通过将值传递给 numberToReturn 参数,可以限制返回的项数。PowerShell 复制 # Retrieve the first set of numbers less than or equal to 10. (1..50).Where({$_ -gt 10}, 'Until') # This would perform the same operation. (1..50).Where({$_ -le 10}) ...
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 the Get-SmallFiles example: PowerShell Copy function Get-SmallFiles ($Size = 100) { Get-ChildItem $HOME | Where-Object { $_.Length -lt $Size ...
!!! powershell script to add a word in the beginning of the text file - URGENT !!! 'A positional parameter cannot be found that accepts argument '$null'. 'Name' Attribute cannot be modified - owned by the system 'set-acl.exe' not recognized as the name of a cmdlet, 'Set-ExecutionP...
The ArchiveQuota value must be greater than or equal to the ArchiveWarningQuota value. Expand table Type: Unlimited Position: Named Default value: None Required: False Accept pipeline input: False Accept wildcard characters: False Applies to: Exchange Server 2010, Exchange Server 2013, Exchange ...
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...
The value of this parameter must be less than or equal to the value of the RecoverableItemsQuota parameter. This setting applies to all mailboxes in the database that don't have their own calendar logging quota configured. Expand table Type: Unlimited Position: Named Default value: None Requ...
!!! powershell script to add a word in the beginning of the text file - URGENT !!! 'A positional parameter cannot be found that accepts argument '$null'. 'Name' Attribute cannot be modified - owned by the system 'set-acl.exe' not recognized as the name of a cmdlet, 'Set-ExecutionP...
database types, you may get back a[dbnull]::Valuewhich is equivalent to$nullwithin the database, but in PowerShell, this was not equal to$nullso you can’t compare it directly. This change fromJoel Sallowallows you to compare both[dbnull]::Valueand[nullstring]::Valueto$nulland get$...
I store my string in a variable, and I call theToCharArraymethod. I then pipe the characters to theForeach-Objectcmdlet (%is an alias), and I use the letters from the word to perform a look up in the$ltrFirsthash table. The result outputs an array of numbers equal to the ASCII val...