使用powershell 2删除一行文本和接下来的0到5行 [英] Remove a line of text and the next 0 to 5 lines with powershell 2

问题描述

我正在使用 powershell，想根据匹配删除一行文本，然后在匹配行之后删除一定数量的行.我有以下代码将删除具有匹配项的当前行.如何删除下一行?

I am using powershell and would like to delete a line of text based on a match and then a certain number of lines after the line with the match. I have the following code which will delete the current line with a match. How do I remove the next line(s)?

获取内容 $filePath |?{$_ -notmatch "`f"} |设置内容 $outPath

Get-Content $filePath | ? {$_ -notmatch "`f"} | Set-Content $outPath

推荐答案

即使这更长，但如果您有更复杂的规则"来确定要删除哪一行，它可能是一个有用的基础.(不过我更喜欢@mjolinor 的回答)

Even though this is longer, it may be a useful base if you have more complex "rules" to determine which line to remove. (I prefer @mjolinor's answer though)

[CmdletBinding()]
Param(
    [Parameter(Mandatory=$true)]
    [String]$Source,

    [Parameter(Mandatory=$true)]
    [String]$Target,

    [Parameter(Mandatory=$true)]
    [Int32]$Lines
)

$LinesLeftToRemove = 0
$TargetContent = @()

(Get-Content $Source) | % {
    If($_ -notmatch "`f") {
        $LinesLeftToRemove = $Lines + 1
    }

    If($LinesLeftToRemove -GT 0) {
        $LinesLeftToRemove--
    } Else {
        $TargetContent += $_
    }
}

Set-Content $Target $TargetContent

请注意，这应该放在 SomeScript.ps1 文件中并像这样使用:

Note that this should be put in a SomeScript.ps1 file and used like this:

.\SomeScript.ps1 -Source .\Source.txt -Target .\Target.txt -Lines 5

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