powershell - 如何使用 powershell 检查我的计算机的 Windows 更新是否已过期超过 30 天

Question

我正在测试我的计算机的 Windows 更新是否已超过 30 天，如果超过，则会弹出一条消息警告用户。

有人可以帮我测试一下日期吗，因为无论如何，它似乎都会给我相同的结果:您的 WINDOWS 更新已更新。

我认为我需要更改日期的格式才能根据 Get-Date 结果进行测试？

Get-WmiObject -Class win32_reliabilityRecords -filter "sourcename = 'Microsoft-Windows-WindowsUpdateClient'" -ErrorAction SilentlyContinue | 
    select -first 1 @{LABEL = "date"; EXPRESSION = {$_.ConvertToDateTime($_.timegenerated)}}, @{LABEL = 'Update'; EXPRESSION = {$_.message}} |
    FT -AutoSize -Wrap

$DateTimeNow = Get-Date
$Daysback = "-31" 
$Updatedate = $_.ConvertToDateTime

if ($DateTimeNow.AddDays($Daysback) -lt $Updatedate.InstalledOn.Date) {
    $wshell = New-Object -ComObject Wscript.Shell

    $wshell.Popup("***WARNING***YOUR WINDOWS UPDATES ARE OVER A MONTH OUT OF 
    DATE. PLEASE CONTACT  IT", 0, " Windows Update Check", 0x1)
}
else {
    $wshell = New-Object -ComObject Wscript.Shell

    $wshell.Popup("YOUR WINDOWS UPDATES ARE IN DATE", 0, " Windows 
    Update Check", 0x1)
}

Answer 1

这应该有效:

$LastUpdate = Get-WmiObject -Class win32_reliabilityRecords -filter "sourcename = 
    'Microsoft-Windows-WindowsUpdateClient'" -ErrorAction SilentlyContinue |
    Select -first 1 @{LABEL = "date";EXPRESSION = {$_.ConvertToDateTime($_.timegenerated)}},@{LABEL = 'Update';EXPRESSION = {$_.message}}

$DateTimeNow = Get-Date
$Daysback = -31

if($LastUpdate.Date -lt $DateTimeNow.AddDays($Daysback)){
    $wshell = New-Object -ComObject Wscript.Shell
    $wshell.Popup("***WARNING***YOUR WINDOWS UPDATES ARE OVER A MONTH OUT OF DATE. PLEASE CONTACT  IT",0," Windows Update Check",0x1)
} else {
    $wshell = New-Object -ComObject Wscript.Shell
    $wshell.Popup("YOUR WINDOWS UPDATES ARE IN DATE",0," Windows Update Check",0x1)
}

更改:

• 您没有将 Get-WmiObject 调用的结果返回到变量，然后测试始终为空的 $Updatedate。
• 您的日期逻辑需要颠倒过来。