全部。

我卡住了。我有一个 PowerShell 脚本，它会在特定文件夹中查找自上次修改日期起超过 30 天的文件(此外，如果该文件夹不存在，它将创建该文件夹)。它创建了文件夹，它给了我所有的文件，它会在测试查询中列出所有文件，但它实际上不会计算 30 天以上的旧文件的数量。我已经尝试了几种方法来获取此计数(一些方法源自其他解决方案以从该站点删除旧文件)，但 PowerShell 就是不想这样做。

到目前为止，这是我的代码...

$HomePath = $env:USERPROFILE
$CompanyFolder = "\Company"
$TimeSensativeFolder = "\TimeSensative"
$TimeSensativePath = $HomePath+$CompanyFolder+$TimeSensativeFolder
$OldFilesAmount = 0
$TotalFilesAmount = 0
$TimeLimit = (Get-Date).AddDays(-30)
$StatusOK = "No old files were found in the time sensative folder."
$StatusCreated = "The time sensative folder was created."
$StatusError1 = "There were old files found in the time sensative folder!"
$StatusError2 = "Unable to create the time sensative folder!"

function MakeTimeSensativeFolder ($TimeSensativePath) {
    try {
        md $TimeSensativePath -Force -ErrorAction Stop
        Write-Host $StatusCreated
    }
    catch {
        Write-Host $StatusError2
    }
}

function CountOldFiles () {
    $OldFilesAmount = $OldFilesAmount + 1
}

if(!(Test-Path $TimeSensativePath -PathType Container)) {
    MakePHIFolder $TimeSensativePath
}
else {

}

try {
    $TotalFilesAmount = (Get-ChildItem $PHIPath -Recurse -File | Measure-Object).Count

    # I've tried this...
    Get-Item $PHIPath | Foreach {$_.LastWriteTime} -ErrorAction Stop
        if (Get-Content $_.LastWriteTime | Where-Object {$_ -gt $TimeLimit}) {
              CountOldFiles
        }

    # And I've tried this...
    Get-ChildItem -Path $PHIPath -Recurse -File | Foreach-Object {
        if (Get-Content $_.LastWriteTime | Where-Object {$_ -gt $TimeLimit}) {
           CountOldFiles
       }
    }

    # I've even tried this...
    Get-ChildItem $PHIPath -Recurse -File | ? {
       -not $_.PSIsContainer -and $_.LastWriteTime -lt $TimeLimit
    } | CountOldFiles

    # And this, as well...
    Get-ChildItem -Path $PHIPath -Recurse -File | Where-Object {$_.LastWriteTime -gt $TimeLimit} | CountOldFiles

}
catch {
    MakeTimeSensativeFolder $TimeSensativePath
}

# Used for testing.
<#
Get-ChildItem $TimeSensativePath -Recurse -File
Write-Host "TimeSensative folder exists:" $TimeSensativePathExists
Write-Host "Home TimeSensative path:" $TimeSensativePath
Write-Host "Old files found:" $OldFilesAmount
Write-Host "Total files found:" $TotalFilesAmount
Exit
#>

# Determining proper grammar for status message based on old file count.
if ($OldFilesAmount -eq 1) {
    $StatusError1 = "There was "+$OldFilesAmount+" old file of "+$TotalFilesAmount+" total found in the PHI folder!"
}
if ($OldFilesAmount -gt 1) {
    $StatusError1 = "There were "+$OldFilesAmount+" old files of "+$TotalFilesAmount+" total found in the PHI folder!"
}

# Give statuses.
if ($OldFilesAmount -gt 0) {
    Write-Host $StatusError1
}
else {
    Write-Host $StatusOK
}

根据我的尝试，我可能得不到任何结果，或者我会得到类似这样的结果:

Get-Content : Cannot find drive. A drive with the name '12/22/2016 17' does not exist.
At C:\Users\nobody\Scripts\PS1\ts_file_age.ps1:54 char:14
+          if (Get-Content $_.LastWriteTime | Where-Object {$_ -gt $Tim ...
+              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : ObjectNotFound: (12/22/2016 17:String) [Get-Content], DriveNotFoundException
        + FullyQualifiedErrorId : DriveNotFound,Microsoft.PowerShell.Commands.GetContentCommand

无论如何，没有我努力要求的旧文件计数。

这有点让人头疼。有什么建议吗？

提前致谢!

最佳答案

使用上次写入时间过滤文件非常简单。像这样，

$allFiles = gci 
$d = (Get-Date).adddays(-30)
$newFiles = @()
$oldFiles = @()
$allFiles | % { if ($_.lastwritetime -ge $d) { $newFiles +=$_ } else { $oldFiles += $_ } }

这里所做的是首先将所有文件设置在一个集合中。这不是强制性的，但可以浏览该集合以检查它是否已正确填充。这在具有复杂路径或排除过滤器的情况下很有用。

第二步只是获取一个DateTime，用于稍后将文件分为新旧文件。就像样本一样，所以这里没有什么有趣的。其实，还有一件小事。日期为 -30 天，但小时、分钟和秒均基于当前时间。因此，如果真的有严格的限制，请考虑使用午夜时间 ([datetime]::Today).AddDays(-30)

第三步是为新文件和旧文件声明两个空集合。

最后一步是遍历 $allFiles 并检查最后写入时间。如果它大于或等于切割点，则将其添加到 $newFiles，否则添加到 $OldFiles。

在最后一步之后，进一步的处理应该足够简单。

关于windows - PowerShell:脚本不会计算自上次修改日期起超过 30 年的文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43463984/