硬件问题并不一定都和硬件有关,只要工作负荷在设计的范围内,大部分电子设备都可以使用相当长的一段时间。为了硬件正常工作,需要安装相应的驱动程序。硬件厂商会为其驱动程序添加数字签名,添加数字签名的驱动都是厂商经过大量测试后通过的,可使设备高效运转的驱动;未经签名的驱动程序可能是导致硬件问题的主要原因。
为了检查硬件是否运行厂商认证的驱动程序,创建名为“CheckSignedDeviceDrivers.ps1”的脚本,其代码如下:
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 $wmi -Property description
}
其中通过param语句声明了4个参数,-computer用于指定操作的目标计算机;-unsigned是个switch参数,用于返回未曾签名的驱动的查询结果;-full参数列出有问题的驱动程序的详细信息;-help参数用于显示帮助文件。如果存在$unsigned变量,则将字符串“isSigned='false'”指定给$filter变量,该变量用于为Get-WmiObject cmdlet提供-filter参数。随后在$mode变量中保存状态信息,用于指定WMI查询的类型;如果不存在$unsigned变量,则检查带签名的驱动程序。
通过数组方式指定相应的属性名,创建变量$property并传递给Get-WmiObject cmdlet查询Win32_PnPSignedDriver WMI类;另外还使用Count属性统计符合条件的驱动程序数量。如果没有签名的驱动程序,则输出之前计数器的值为空,而不是0。该脚本的执行结果如图8所示。
图8 执行结果
需要强调的是由于Windows Vista和Windows Server 2008与Windows XP硬件驱动的WMI管理类存在差别,所以该脚本仅显示在Windows Vista和Windows Server 2008系统。
作者: 付海军
出处:http://fuhj02.cnblogs.com
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