PowerShell2.0之Windows排錯(五)查看硬件問題

PowerShell2.0之Windows排錯(五)查看硬件問題

硬件問題並不必定都和硬件有關，只要工做負荷在設計的範圍內，大部分電子設備均可以使用至關長的一段時間。爲了硬件正常工做，須要安裝相應的驅動程序。硬件廠商會爲其驅動程序添加數字簽名，添加數字簽名的驅動都是廠商通過大量測試後經過的，可以使設備高效運轉的驅動；未經簽名的驅動程序多是致使硬件問題的主要緣由。

爲了檢查硬件是否運行廠商認證的驅動程序，建立名爲「CheckSignedDeviceDrivers.ps1」的腳本，其代碼以下：

param(

$computer="localhost",

[switch]$unsigned,

[switch]$full,

[switch]$help

)

function funline ($strIN)

{

$num = $strIN.length

for($i=1 ; $i -le $num ; $i++)

{ $funline += "=" }

Write-Host -ForegroundColor green $strIN

Write-Host -ForegroundColor darkgreen $funline

}

function funHelp()

{

$helpText=@"

DESCRIPTION:

NAME: CheckSignedDeviceDrivers.ps1

Displays a listing of device drivers that are

and whether they are signed or not

PARAMETERS:

-computer the name of the computer

-unsigned lists unsigned drivers

-full lists Description, driverProviderName,

Driverversion,DriverDate, and infName

-help prints help file

SYNTAX:

CheckSignedDeviceDrivers.ps1 -computer munich -unsigned

Displays a listing of all unsigned drivers

on a computer named munich

CheckSignedDeviceDrivers.ps1 -unsigned -full

Displays a listing of all unsigned drivers on local

computer. Lists Description, driverProviderName,

Driverversion,DriverDate, and infName of the driver

CheckSignedDeviceDrivers.ps1 -computer munich -full

Displays a listing of all signed drivers

a computer named munich. Lists Description, driverProviderName,

Driverversion,DriverDate, and infName of the driver

CheckSignedDeviceDrivers.ps1 -help ?

Displays the help topic for the script

"@

$helpText

exit

}

if($help){ "Obtaining help ..." ; funhelp }

if($unsigned)

{ $filter = "isSigned = 'false'" ; $mode = "unsigned" }

ELSE

{ $filter = "isSigned = 'true'" ; $mode = "signed" }

$property = "Description", "driverProviderName", `

"Driverversion","DriverDate","infName"

$wmi = Get-WmiObject -Class Win32_PnPSignedDriver `

-computername $computer -property $property -filter $filter

funline("There are $($wmi.count) $mode drivers isted below:")

if($full)

{

format-list -InputObject $wmi -property `

$property

}

ELSE

{

format-table -inputobject $wmi -Property description

}

其中經過param語句聲明瞭4個參數，-computer用於指定操做的目標計算機；-unsigned是個switch參數，用於返回不曾簽名的驅動的查詢結果；-full參數列出有問題的驅動程序的詳細信息；-help參數用於顯示幫助文件。若是存在$unsigned變量，則將字符串「isSigned='false'」指定給$filter變量，該變量用於爲Get-WmiObject cmdlet提供-filter參數。隨後在$mode變量中保存狀態信息，用於指定WMI查詢的類型；若是不存在$unsigned變量，則檢查帶簽名的驅動程序。

經過數組方式指定相應的屬性名，建立變量$property並傳遞給Get-WmiObject cmdlet查詢Win32_PnPSignedDriver WMI類；另外還使用Count屬性統計符合條件的驅動程序數量。若是沒有簽名的驅動程序，則輸出以前計數器的值爲空，而不是0。該腳本的執行結果如圖8所示。

圖8 執行結果

須要強調的是因爲Windows Vista和Windows Server 2008與Windows XP硬件驅動的WMI管理類存在差異，因此該腳本僅顯示在Windows Vista和Windows Server 2008系統。

做者: 付海軍  
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