Foreach循环输出DateTime对象加上其他细节。

问题描述

我无法获取Powershell Foreach 循环输出 [DateTime] 对象，所以我可以比较在另一个对象重新启动之后。

I'm having trouble getting a Powershell Foreach loop to output a [DateTime] object so I can compare it with another object after rebooting.

下面的示例脚本，我正在寻找创建一个哈希表来存储Computername +上次重新启动时间，然后添加当前的重新启动时间，以便重新启动次数可以比较。

Example script below, I'm looking to create a hashtable to store the Computername + Last reboot time then add a current reboot time so the reboot times can be compared.

$servers = GC D:\Scripts\list1.txt

foreach($server in $servers){

 Try{
  $operatingSystem = Get-WmiObject Win32_OperatingSystem -ComputerName $server
  $current = [Management.ManagementDateTimeConverter]::ToDateTime($operatingSystem.LastBootUpTime)

  "$server last rebooted $current"
 }#end try

 Catch{
  $err = $_.Exception.GetType().FullName
  Write-Warning "$err on $($server)"}#end catch

}#End foreach

-Edit，上述脚本以字符串形式输出以下内容。我试图收集一个 TypeName：System.DateTime 对象的集合。

-Edit, the above script outputs the below as a string. I'm trying to get a collection of TypeName: System.DateTime objects.

Server1 last rebooted 10/24/2015 11:39:34
Server2 last rebooted 10/22/2015 01:34:33

所以我戳了更多，得到这一行，本质上该脚本变成重新启动计算机，直到一切都是最新的。

So I poked around more and got this line, essentially the script becomes "Reboot the computers until everything is current."

IF($current -gt ((Get-Date).AddHours(-6)))
{"Server reboot is current for $server"}ELSE{"Please check $server"}

推荐答案

不能同时使用！

$servers = Get-Content "D:\Scripts\list1.txt"

$servers | ForEach-Object{
    $props = @{}
    $props.Server = $_
    Try{
        $operatingSystem = Get-WmiObject Win32_OperatingSystem -ComputerName $props.Server
        $props.LastBootTime = [Management.ManagementDateTimeConverter]::ToDateTime($operatingSystem.LastBootUpTime)
    } Catch {
      $err = $_.Exception.GetType().FullName
      $props.LastBootTime = $null
      Write-Warning "$err on $($props.Server)"
    }#end catch

    New-Object -TypeName psobject -Property $props
}#End foreach

更改循环结构，因为输出更容易如果需要的话。为try / catch块后转换成对象的每个循环遍建立散列表。未测试，但它应该工作。

Change the loop structure as it is easier for output to be piped if need be. Build a hashtable for each loop pass that is converted into an object after the try/catch block. Untested but it should work.

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