将文件移动到父文件夹名称匹配的新位置

枚举备份的文件,将源基本路径替换为目标基本路径,然后移动文件。如果只想替换现有文件,请测试目标是否存在:

Get-ChildItem -Path $Path -Filter '*.config' -Recursive | ForEach-Object {
    $dst = $_.FullName.Replace($Path, $destination)
    if (Test-Path -LiteralPath $dst) {
        Copy-Item -Path $_.FullName -Destination $dst -Force
    }
}

如果要还原目标中丢失的文件,请确保首先创建丢失的目录:

Get-ChildItem -Path $Path -Filter '*.config' -Recursive | ForEach-Object {
    $dst = $_.FullName.Replace($Path, $destination)
    $dir = [IO.Path]::GetDirectoryName($dst)
    if (-not (Test-Path -LiteralPath $dir -PathType Container)) {
        New-Item -Type Directory -Path $dir | Out-Null
    }
    Copy-Item -Path $_.FullName -Destination $dst -Force
}

理想情况下,在处理任何项目组(在本例中为网站)时,尝试为项目找到唯一标识符。SiteID非常适合于此。

$Path = C:\Temp\MyBackups\Backup_03-14-2017  #In this directory store the web.config's in directories that match the SiteID of the site they belong to
#For example, if the site id was 5, then the full backup directory would be: C:\Temp\MyBackups\Backup_03-14-2017\5 
$backups = Get-ChildItem -Path $Path -Include *.config -Recurse

foreach ($backup in $backups) 
{
    $backupId = $backup.Directory.Name
    $destination = (Get-Website | where {$_.id -eq $backupId}).physicalPath

    Copy-Item -Path $backup -Destination $destination 
}