获取最新文件并将其文件名与其余文件进行比较

Question

我想获取目录中的最新文件并使用其文件名而不带（数数）检查它是否与其余文件具有相同的名称。

如果文件名匹配，将其重命名为 $(Get-Date -Format yyyymmddhhmmss)_$ScreenTitle 并将其移至输出文件夹。

如果没有，什么也不做。

编辑：

这些是来自 Xbox Game Bar 屏幕截图 (Win+Alt+PrtScn) 的默认文件名：

下面的代码工作正常，（感谢@Theo！） 但我发现文件名的时间发生了变化，因此它与正则表达式不匹配。

$ParentFolder = "$env:USERPROFILE\Videos\Captures"
#Set-Location $ParentFolder

# Create an Output Folder wether It's Existing or Not
New-Item $ParentFolder\Output -Force -ItemType Directory | Out-Null
$OutputFolder = ".\Output"

Get-ChildItem -Path $ParentFolder -Filter '*.png' -File | Group-Object {$_.BaseName.Split("(")[0].TrimEnd()} | 
Where-Object { $_.Count -gt 1 } | ForEach-Object {
    # get the latest file
    $newestFile = $_.Group | Sort-Object LastWriteTime -Descending | Select-Object -First 1
    $newestFile

    If ($newestFile.BaseName -match '^(.+)\s+(\d{2}_\d{2}_\d{4}\s+\d{2}_\d{2}_\d{2}\s+[ap]m).*$') {
        $screentitle      = $matches[1]
        $dateFromFileName = $matches[2]  # the date from the filename unaltered like '11_21_2022 10_59_21 AM'
        
        $dateToday = Get-Date -Format "yyyymmddhhmmss"

        # create the new filename
        $NewFileName = '{0}_[{1}]{2}' -f $dateToday, $screenTitle, $newestFile.Extension

        # Move the file with a new name to the destination
        Write-Host "Moving file '$($newestFile.Name)' as '$NewFileName'"
        $newestFile | Move-Item -Destination (Join-Path -Path $OutputFolder -ChildPath $NewFileName)
    }
}

Answer 1

有点不清楚是要使用移动文件中文件名的日期还是当前日期。 在新文件名中使用该日期时，您也没有说明该日期应采用何种格式。

有关日期的替代方案，请参阅下面代码中的 cmets

$ParentFolder = 'Z:WhereTheFilesAre'
$OutputFolder = 'X:TheSestinationFolder'

Get-ChildItem -Path $ParentFolder -Filter '*.png' -File | Group-Object {$_.BaseName.Split("(")[0].TrimEnd()} | 
Where-Object { $_.Count -gt 1 } | ForEach-Object {
    # get the latest file
    $newestFile = $_.Group | Sort-Object LastWriteTime -Descending | Select-Object -First 1
    if ($newestFile.BaseName -match '^(.+)s+(d{2}_d{2}_d{4}s+d{2}_d{2}_d{2}s+[ap]m).*$') {
        $screentitle      = $matches[1]
        $dateFromFileName = $matches[2]  # the date from the filename unaltered like '11_21_2022 10_59_21 AM'

        # if you want the date from the file name formatted like 'yyyy_MM_dd HH-mm-ss'
        # $date = [datetime]::ParseExact($dateFromFileName, 'MM_dd_yyyy h_mm_ss tt', [cultureinfo]::InvariantCulture)
        # $dateFromFileName = '{0:yyyy_MM_dd HH-mm-ss}' -f $date

        # create the new filename
        $NewFileName = '{0}_[{1}]{2}' -f $dateFromFileName, $screenTitle, $newestFile.Extension

        # Move the file with a new name to the destination
        Write-Host "Moving file '$($newestFile.Name)' as '$NewFileName'"
        $newestFile | Move-Item -Destination (Join-Path -Path $OutputFolder -ChildPath $NewFileName)

        # what do you want to do with the rest of the files that were older? Delete them?
        # $_.Group | Sort-Object LastWriteTime -Descending | Select-Object -Skip 1 | Remove-Item
    }
}