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删除文本文件中的前三行

tag-icon • tag-icon windows-10 script powershell-5.0
删除文本文件中的前三行

该脚本生成一个音乐列表，这些音乐的 LUFS 值将被标准化，但是，首先我需要从该列表中删除标题。标题包含三行：第一行是空白的，第二行包含 Music 和 LUFS 列，第三行包含破折号。

我尝试使用此链接中的命令：
删除文本文件的顶行

列出txt文件内容：


Music                                                                    LUFS
------                                                                   ----
05 - Earth Wind and Fire - September (The Reflex Revision).mp3          -9,6

脚本：

# Receive parameter sent by batch file
Param(
   [decimal]$_vLUF
)
[decimal]$vLUFps = $_vLUF

$files = "C:\Users\$env:username\Desktop\Logs_LUFS\List Music for normalization.txt"
$fileSelect = "C:\Users\$env:username\Desktop\Logs_LUFS\Selection List.txt"

# Read log files and generate the file List Music for normalization.txt 
$logMatches = Select-String -Path "C:\Users\$env:username\Desktop\Logs_LUFS\*.*" -Pattern '(?<I>^ +I:) +(?<LUFS>.+)|(?<I>^Input Integrated:) +(?<LUFS>.+)' -List | Select-Object -Property FileName -ExpandProperty Matches
    $results = foreach ($log in $logMatches) {
        $pos = $log.Filename.IndexOf("_")
        $leftPart = $log.Filename.Substring(0, $pos)
        $rightPart = $log.Filename.Substring($pos+1)
        $LUFS = $log.Groups | Where-Object { $_.Name -eq "LUFS" }
        [PSCustomObject]@{
            Música = $rightPart
            LUFS = [decimal]$($LUFS.Value -replace " .*")
        }
    }
$vLUFpsLess= ($vLUFps)+ (-0.9)
$vLUFpsGreat= ($vLUFps)+ (-0.5)
$results | Where-Object {($_.LUFS -lt $vLUFpsLess) -or ($_.LUFS -gt $vLUFpsGreat) } | Out-file $files

# Get content from $files to $fileSelect
Set-Content $fileSelect -Value (Get-Content $files)

# Removes blank line, column titles and dashes in $fileSelect
get-content $fileSelect |
  select -Skip 3 |
  set-content "$fileSelect-temp"
  move "$fileSelect-temp" $fileSelect -Force

向此脚本发送参数的批处理文件中的命令：

powershell -NoProfile -ExecutionPolicy Bypass -Command "Start-Process -Verb RunAs powershell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File \"D:\z_Batchs e Scripts\Batchs\Normaliza_LUFS\ArqsNorms_LUFS_pass.ps1\" -_vLUF %_vLUF%'"

当我运行命令删除前三行时，它说Selection List.txt-temp找不到该文件，因为它不存在。如果文件Selection List.txt-temp刚刚创建，怎么会发生这种情况？

错误信息：

move : Unable to find the path 'C:\Users\CMG\Desktop\Logs_LUFS\Selection List.txt-temp' because he doesn't exist.
No D:\z_Batchs e Scripts\Batchs\Normaliza_LUFS\ArqsNorms_LUFS_pass.ps1:45 character:1
+ move "$fileSelect-temp" $fileSelect -Force
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

是否有其他命令可以用来删除文本文件的前三行？

答案1

工作原理如下：

Get-ChildItem $fileSelect | ForEach-Object {
Set-Content (Get-Content $_ | Select-Object -Skip 3) -Path $_
}

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