检查 Compress-Archive 是否可以根据文件归档的成功生成 true/false

Question

我有以下代码：

$items = Get-ChildItem -Path 'D:\Myoutput\'
$items | ForEach-Object 
{
  $lastWrite = ($_).LastWriteTime
  $timespan = New-Timespan -days 3 -hours 0 -Minutes 0
  if(((get-date) - $lastWrite) -gt $timespan) {
    $name = $_.Name
    $isDir = $_.PSIsContainer
    if(!$isDir) {
      $_ | Compress-Archive -DestinationPath "D:\Myoutput\Archive$name.zip"
      if (**above_line** is success) {
       echo "$name is zipped"
       $_ | Remove-Item
      }
    }
  }
}

请帮忙，我怎样才能知道'$_ | Compress-Archive -DestinationPath "D:\Myoutput\Archive$name.zip"' 是否成功。

Answer 1

Compress-Archive 如果失败已经抛出错误，您可以在删除原始文件之前捕获它。例如，我使用 continue 跳过其余命令。您还可以使用 Get-ChildItem -File:

跳过检查文件夹

Foreach ($file in (Get-Item C:\temp\ -File)) {
  Try { $file | Compress-Archive -DestinationPath C:\BadPath\test.zip }
  Catch { Write-Warning ("Skipping file due to error: " + $file.FullName); continue }
  Remove-Item $file
}

下面是我使用上面的错误路径时的输出：

WARNING: Skipping file due to error: C:\temp\test1.txt
WARNING: Skipping file due to error: C:\temp\test2.txt

而且这些文件不会被删除。

Answer 2

Compress-Archive will throw exceptions if something goes wrong, and it will delete partially created archives (source)。所以，你可以做两件事来确保成功：

捕获异常
测试存档是否存在

示例：

$items = Get-ChildItem -Path 'D:\Myoutput\'
$items | ForEach-Object 
{
  $lastWrite = ($_).LastWriteTime
  $timespan = New-Timespan -days 3 -hours 0 -Minutes 0
  if(((get-date) - $lastWrite) -gt $timespan) {
    $name = $_.Name
    $isDir = $_.PSIsContainer
    if(!$isDir) {
      try {
        $_ | Compress-Archive -DestinationPath "D:\Myoutput\Archive$name.zip"
        if (Test-Path -Path "D:\Myoutput\Archive$name.zip") {
          Write-Host "$name is zipped"
          $_ | Remove-Item
        } else {
          Write-Host "$name is NOT zipped" -ForegroundColor Red
        }
      } catch {
        Write-Host "$name is NOT zipped" -ForegroundColor Red
      }
    }
  }
}

检查 Compress-Archive 是否可以根据文件归档的成功生成 true/false

checking if Compress-Archive can produce a true/false based on success of the archival of a file

powershell

compress-archive