PS> $empty = $null PS> $empty[0] Error: Cannot index into a null array. 因此,在尝试访问数组中的元素之前,请确保数组不是 $null。Count数组和其他集合具有计数属性,可告知数组中有多少项。PowerShell 复制 PS> $data.count 4 PowerShell 3.0 向大多数对象添加了计数属性。 你可以使用单个对象,它应该...
[<CommonParameters>] DESCRIPTION > This cmdlet is only available on the Windows platform. The `Get-HotFix` cmdlet uses the Win32_QuickFixEngineering WMI class to list hotfixes that are installed on the local computer or specified remote computers. RELATED LINKS Online Version: https://learn....
It refers to the first, last, and second-to-last elements in the array.You can use the plus operator (+) to combine a ranges with a list of elements in an array. For example, to display the elements at index positions 0, 2, and 4 through 6, type:PowerShell Copy ...
PSCredential -ArgumentList $Username,$pass $iparray = @('172.21.66.32','172.21.65.41','172.21.65.162') for($i=0;$i -lt $iparray.Length;$i++){ "`$iparray["+$i+"]="+$iparray[$i]+"`n" Invoke-Command -ComputerName $iparray[$i] -Credential $Cred -ScriptBlock { Get-Windows...
在list 中添加一项,如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 { "guid": "{be8c6241-aafb-437f-8d7c-a7142adf7f54}", "name": "PowerShell Core", "commandline": "D:\\Program Files\\PowerShell\\7\\pwsh.exe", "icon": "D:\\Program Files\\PowerShell\\7\\assets\\ps...
The statement list contains one or more statements that run each time the loop is entered or repeated. The condition portion of the statement resolves to true or false. For more information about how booleans are evaluated, seeabout_Booleans. ...
You can see what’s going on here: we’re taking our array ($arrColors) and “piping” it to the Sort-Object cmdlet. After Sort-Object sorts the items in the array, we then assign this new, sorted list back to $arrColors. So now what is $arrColors equal to? This:...
括号中的foreach语句部分表示要循环访问的变量和集合。 PowerShell 在$<item>循环运行时自动创建变量foreach。 每次迭代开始时,foreach会将项变量设置为集合中的下一个值。{<statement list>}块包含针对每次迭代执行的命令。 示例 例如,以下示例中的foreach循环显示$letterArray数组中的值。
A PowerShell function is similar to a PowerShell cmdlet, with several slight differences. In simplest terms, afunction involves a list of PowerShell statementsorganized under a single function name or label. The function is invoked by simply typing the function name, and the list of statements ...
PS C:\PowerShell> [System.Enum]::GetNames([System.Security.AccessControl.FileSystemRights]) ListDirectory ReadData WriteData CreateFiles CreateDirectories AppendData ReadExtendedAttributes WriteExtendedAttributes Traverse ExecuteFile DeleteSubdirectoriesAndFiles ReadAttributes WriteAttributes Write Delete ReadPermi...