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...
Get-ComputerInfo 英文术语 中文术语 解释 WindowsBuildLabEx Windows 构建实验室扩展 提供操作系统的详细构建信息,通常用于识别 Windows 版本的精确构建号。 WindowsCurrentVersion 当前 Windows 版本 当前 Windows
$array = 1..5 | ForEach-Object { "ATX-SQL-$PSItem" } 通常當我們想到使用管道時,我們會聯想到典型的 PowerShell 單行指令。 我們可以將 foreach() 語句和其他迴圈搭配於管線中使用。 因此,我們可以將項目放入管線,而不是在迴圈中將項目新增至陣列。PowerShell 複製 ...
For example, the objects that Get-Process retrieves to represent processes are of the System.Diagnostics.Process type. To create a strongly typed array of process objects, enter the following command:PowerShell Copy [Diagnostics.Process[]]$zz = Get-Process ...
unsigned n) memcpy(arr->pvData, PowerShellRunner_dll, PowerShellRunner_dll_len); SafeArrayUnlock(arr); hr = spDefaultAppDomain->Load_3(arr, &spAssembly); if (FAILED(hr)) { wprintf(L"Failed to load the assembly w/hr 0x%08lx\n", hr); goto Cleanup; } // Get the Type of Power...
The following example is a function calledGet-SmallFiles. This function has a$Sizeparameter. The function displays all the files that are smaller than the value of the$Sizeparameter, and it excludes directories: PowerShell functionGet-SmallFiles{param($Size)Get-ChildItem$HOME|Where-Object{$_.Lengt...
(By the way, note the additional set of square brackets – [ ] – that follows the data type name.) Granted, this doesn’t look like much, and you won’t notice any difference when echoing back the value of the array; request the value of $a and you’ll get back this: Copy 1...
Control size of Excel window openned with PoweShell? Conversion error when inserting into a SQL Server table Convert a perl script to use in powershell instead Convert a string to a PSObject Convert array to string Convert Arraylist to delimited string Convert C# code in to PowerShell Script ...
PowerShell Bonus: Getting an Array of Day/Month Names To tell you the truth this has nothing to do with the Get-Date cmdlet, but we decided to tack this on to this week’s tip because we found in interesting. The .NET Framework classSystem.Globalization.DateTimeFormatInfois designed to ...
Example 4: Select unique characters from an array This example uses theUniqueparameter ofSelect-Objectto get unique characters from an array of characters. PowerShell "a","b","c","a","A","a"|Select-Object-Uniquea b c A Example 5: Using `-Unique` with other parameters ...