PowerShell 复制 Get-Item -Path .\LineNumbers.txt | Get-Content -Tail 1 This is Line 100 此示例使用 Get-Item cmdlet 来演示如何通过管道将文件传递给 Get-Content。 Tail 参数获取文件的最后一行。 此方法比检索变量中的所有行并使用 [-1] 索引表示法更快。示例...
if (PathIsDrive(path)) { foreach (DatabaseTableInfo table in GetTables()) { WriteItemObject(table.Name, path, true); } // foreach (DatabaseTableInfo... } // if (PathIsDrive... else { // Get type, table name and row num...
$first10 = (ps | sort ws -Descending | select -first 10)$first10 | foreach -Process {$i++; $objWorksheet.Cells.Item($i,1) = $_.name; $objWorksheet.Cells.Item($i,2) = $_.ws} $otherMem = (ps | measure ws -s).Sum - ($first10 | measure ws -s).Sum $objWorksheet.Cells...
PSItem in Begin is: PSItem in Process is: 1 PSItem in Process is: 2 PSItem in Process is: 3 PSItem in End is: Result is: 2 3 4 Where-Object FilterScript Командлет Where-Objectпредназначендляфильтрацииобъектоввконвейе...
trap { Write-Log $PSItem.ToString() } throw [System.Exception]::new('first') throw [System.Exception]::new('second') throw [System.Exception]::new('third') 我个人从未用过这种方法,但我可以在记录任何和所有异常的管理员或控制器脚本中看到该值,然后仍继续执行。结束...
1、第一行是通过Get-Item把D盘Powershell_test文件夹下的test.xlsx这个对象赋给$file_excel这个变量。 2、第二行是新建一个Excel对象,并将值赋给$Excel变量 3、第三行是如果希望屏幕上显示Excel图形界面,设值为$true,否则为$false,或者直接不写这行代码。
Wait参数Select-Object阻止 PowerShell 在获取前五个只读文本文件后停止Get-ChildItemcmdlet。 如果没有此参数,将仅重命名前五个只读文件。 PowerShell Get-ChildItem*.txt-ReadOnly|Rename-Item-NewName{$_.BaseName +"-ro.txt"}-PassThru|Select-Object-First5-Wait ...
$Uri = 'https://api.contoso.com/v2/profile' $Form = @{ firstName = 'John' lastName = 'Doe' email = 'john.doe@contoso.com' avatar = Get-Item -Path 'C:\Pictures\jdoe.png' birthday = '1980-10-15' hobbies = 'Hiking','Fishing','Jogging' } $Result = Invoke-RestMethod -Uri $...
functionSwitch-Item{param([switch]$On)if($On) {"Switch on"}else{"Switch off"} } When you type theOnswitch parameter after the function name, the function displaysSwitch on. Without the switch parameter, it displaysSwitch off. PowerShell ...
PS> (Get-Item*.txt).Count-gt10True Piping grouped expressions When used as the first segment of a pipeline, wrapping a command or expression in parentheses invariably causesenumerationof the expression result. If the parentheses wrap acommand, it's run to completion with all outputcollected in...