PowerShell

Question

我正在尝试创建一个 PowerShell 脚本，该脚本将运行每天早上一次（通过任务计划程序）并提醒某人（通过直接发送（我知道如何执行此操作，稍后将实现所述功能） ) 如果文件不是在前一天的每个小时内创建的，以便不再需要手动执行此操作或出现问题时。文件名，如 $FilePattern 中所示，都包含它们的创建日期和时间。显然，我的 Foreach 循环中的逻辑是有缺陷的，因为 $Time 总是以 $Hours 为单位，但我一直在摸不着头脑，一直无法弄清楚我应该怎么做。我以为我可以比较两个数组，但我现在不太确定。我还运行跨越 Compare-Object ，这看起来很有希望，但我不太明白。我为混乱道歉。我现在的代码如下。

[CmdletBinding()]

param(

    [Parameter(Mandatory=$false)]
    [ValidateScript({ Test-Path $_ -PathType Container })]
    [string]
    $Path = "C:\Users\<username>\Desktop\Archive",
    $Year = [DateTime]::Today.AddDays(-1).Year,
    $Month = [DateTime]::Today.AddDays(-1).Month,
    $Day = ([DateTime]::Today.AddDays(-1).Day),
    $strMonth = ([String]$Month).PadLeft(2,'0'),
    $strDay = ([String]$Day).PadLeft(2,'0'),
    $Date = "$Year" + "$strMonth" + "$strDay",
    $FilePattern = @("850_" + $Date + "*.txt"),
    $Files = (Get-ChildItem -Path $Path -Include $FilePattern -Recurse | 
        Select-Object -ExpandProperty CreationTime | Get-Date -f "yyyyMMdd"),
    $Time = (Get-ChildItem -Path $Path -Include $FilePattern -Recurse |
        Select-Object -ExpandProperty CreationTime | Get-Date -f "hh"),
    $Hours = @(0..23)

)

Foreach ($File in $Files) {

    #if (-Not (Test-Path "$Path$FilePattern")) {
    #    Write-Host "Warning: The file path doesn't exist!"
    #} else {
    #    Write-Host "The file path exists..."
    #}

    if ($Hours -notin $Time) {
        Write-Host "There's no file present for $Time o'clock for $Date."
    } else {
        Write-Host "There's at least one file per hour for $Date."
    }

}

Answer 1

我仍然需要重构和更改一些东西，但这似乎有效。

[CmdletBinding()]

param(

    $Path = "C:\Users\<username>\Desktop\Archive",
    $Year = [DateTime]::Today.AddDays(-1).Year,
    $Month = [DateTime]::Today.AddDays(-1).Month,
    $strMonth = ([String]$Month).PadLeft(2,'0'),
    $Day = ([DateTime]::Today.AddDays(-1).Day),
    $strDay = ([String]$Day).PadLeft(2,'0'),
    $Date = "$Year" + "$strMonth" + "$strDay",
    $Hours = @(
        "00", "01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11",
        "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23"
    ),
    $strHours = $Hours.ToString().PadLeft(2,'0'),
    $FilePattern = @("850_" + $Date + "*.txt"),
    $Files = (Get-ChildItem -Path $Path -Include $FilePattern -Recurse | 
        Select-Object -ExpandProperty CreationTime | Get-Date -f "HH")

)

ForEach ($Hour in $Hours) {

    if ($Hour -notin $Files) {

        Write-Host "There's no file present for $Hour o'clock for $Date."

    } else {

        Write-Host "There's at least one file for $Hour o'clock for $Date."

    }

}

Answer 2

这是一个更短且可能更易读的实现：

$Path = "C:\Users\<username>\Desktop\Archive\*"
$Date = (Get-Date).AddDays(-1).ToString('yyyyMMdd')
$Hours = Get-ChildItem -Path $Path -Include "850_$($Date)*.txt" | ForEach-Object {(Get-Date $_.CreationTime).Hour} | Sort-Object | Get-Unique
for ($Hour = 0; $Hour -lt 24; $Hour++) {
    if ($Hour -in $Hours) {
        Write-Host "There's at least one file for $Hour o'clock for $Date." -ForegroundColor Green
    } else {
        Write-Host "There's no file present for $Hour o'clock for $Date." -ForegroundColor Red
    }
}

所以我改变了什么：

我删除了 params 块，因为我认为您只是用它来初始化变量，但它旨在定义要传递给函数的参数。看起来您不想向该脚本传递任何内容。纠正我，如果我错了。
我在您的路径中添加了一个星号 (*) 以使 -Include 参数起作用（参见 docs）。我认为您添加了 -Recurse 以使其工作。仅当您的日志位于子目录中时才使用 -Recurse。
我添加了一种更具可读性和更易于理解的方法来创建您想要的时间戳。
我提取了小时数，您正在寻找数字，因此您可以将它们与数字进行比较，而不必创建一个由两位数字符串化的小时数组成的数组。
我在输出中添加了颜色，以便在缺少任何文件时获得更快的概览。

PowerShell - 是否为每小时创建一个文件？

PowerShell - Was A File Created For Each Hour?

arrays

compareobject