PowerShell Remove-Item不等待 [英] PowerShell Remove-Item not waiting

问题描述

如果有这段代码

if(Test-Path -Path $OUT) 
{ 
    Remove-Item $OUT -Recurse 
}
New-Item -ItemType directory -Path $OUT

有时可以，但是有时New-Item行会产生 PermissionDenied ItemExistsUnauthorizedAccessError 错误.我认为这意味着以前的Remove-Item尚未完全执行，并且无法创建该文件夹，因为该文件夹仍然存在.

Sometimes it works, but sometimes the New-Item line produces a PermissionDenied ItemExistsUnauthorizedAccessError error. Which, I assume, means that the previous Remove-Item was not completely performed yet and the folder cannot be created because it still exists.

如果我在那里睡觉

if(Test-Path -Path $OUT) 
{ 
    Remove-Item $OUT -Recurse 
    Start-Sleep -s 1
}
New-Item -ItemType directory -Path $OUT

然后它总是可以工作. 如何强制Remove-Item以确保文件夹已真正删除? 还是我想念其他东西?

then it works always. How can I force Remove-Item to ensure that the folder is really removed? Or maybe I miss something else?

推荐答案

Remove-Item命令具有尝试以下方法:

if (Test-Path $OUT) 
{ 
    # if exists: empty contents and reuse the directory itself
    Get-ChildItem $OUT -Recurse | Remove-Item -Recurse
}
else
{
    # else: create
    New-Item -ItemType Directory -Path $OUT
}

注意:

• Get-ChildItem命令仅查找非隐藏文件和子目录，因此清空目标目录可能不完整；要也包含隐藏的项目，请添加-Force.

• The Get-ChildItem command only finds non-hidden files and subdirectories, so emptying out the target directory may not be complete; to include hidden items too, add -Force.

类似地，将-Force添加到-RemoveItem以强制删除具有只读属性集的文件.

Similarly, add -Force to -RemoveItem to force removal of files that have the read-only attribute set.

• 没有-Force时，清空可能仍然不完整，但是在这种情况下，您将得到非终止错误.如果要将它们视为终止错误，也请添加-ErrorAction Stop.

• Without -Force, emptying may again be incomplete, but you'll get non-terminating errors in this case; if you want to treat them as terminating errors, add -ErrorAction Stop too.

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