Powershell小技巧之使用WMI工具
投稿：hebedich
WMI是一个强大的技术：只需要简单的指定一个WMI类名就能返回它类的所有实例：
PS> Get-WmiObject -Class Win32_BIOS
SMBIOSBIOSVersion : 76CN27WW
Manufacturer : LENOVO
Name : 76CN27WW
SerialNumber : 1006250300406
Version : LENOVO - 1
你如何知道它有哪些类呢？这里有一款查找工具：
function Find-WMIClass
{
param
(
[Parameter(Mandatory=$true)]
$SearchTerm = 'Resolution'
)
Get-WmiObject -Class * -List |
Where-Object { $_.Properties.Count -ge 3 } |
Where-Object { $_.Name -notlike 'Win32_Perf*' } |
Where-Object {
$ListOfNames = $_.Properties | Select-Object -ExpandProperty Name
($ListOfNames -like "*$SearchTerm*") -ne $null
} |
Sort-Object -Property Name
}
设置搜索条件后，代码将搜索出包含指定属性名的类（还可以通过通配符扩大搜索范围）
下面将找出所有包含“resolution”结尾的WMI类：
PS> Find-WMIClass -SearchTerm *resolution
NameSpace: ROOT\cimv2
Name Methods Properties
---- ------- ----------
CIM_CacheMemory {SetPowerState, R... {Access, AdditionalErr...
CIM_CurrentSensor {SetPowerState, R... {Accuracy, Availabilit...
CIM_FlatPanel {SetPowerState, R... {Availability, Caption...
CIM_Memory {SetPowerState, R... {Access, AdditionalErr...
CIM_MonitorResolution {} {Caption, Description,...
CIM_NonVolatileStorage {SetPowerState, R... {Access, AdditionalErr...
CIM_NumericSensor {SetPowerState, R... {Accuracy, Availabilit...
CIM_PCVideoController {SetPowerState, R... {AcceleratorCapabiliti...
CIM_PointingDevice {SetPowerState, R... {Availability, Caption...
CIM_Printer {SetPowerState, R... {Availability, Availab...
CIM_Tachometer {SetPowerState, R... {Accuracy, Availabilit...
CIM_TemperatureSensor {SetPowerState, R... {Accuracy, Availabilit...
CIM_VideoController {SetPowerState, R... {AcceleratorCapabiliti...
CIM_VideoControllerResolution {} {Caption, Description,...
CIM_VolatileStorage {SetPowerState, R... {Access, AdditionalErr...
CIM_VoltageSensor {SetPowerState, R... {Accuracy, Availabilit...
Win32_CacheMemory {SetPowerState, R... {Access, AdditionalErr...
Win32_CurrentProbe {SetPowerState, R... {Accuracy, Availabilit...
Win32_DisplayControllerConfigura... {} {BitsPerPixel, Caption...
Win32_MemoryArray {SetPowerState, R... {Access, AdditionalErr...
Win32_MemoryDevice {SetPowerState, R... {Access, AdditionalErr...
Win32_NetworkAdapterConfiguration {EnableDHCP, Rene... {ArpAlwaysSourceRoute,...
Win32_PointingDevice {SetPowerState, R... {Availability, Caption...
Win32_Printer {SetPowerState, R... {Attributes, Availabil...
Win32_PrinterConfiguration {} {BitsPerPel, Caption, ...
Win32_SMBIOSMemory {SetPowerState, R... {Access, AdditionalErr...
Win32_TemperatureProbe {SetPowerState, R... {Accuracy, Availabilit...
Win32_VideoConfiguration {} {ActualColorResolution...
Win32_VideoController {SetPowerState, R... {AcceleratorCapabiliti...
Win32_VoltageProbe {SetPowerState, R... {Accuracy, Availabilit...
接着，就可以使用类名查看它的有效数据啦：
PS> Get-WmiObject -Class CIM_CacheMemory | Select-Object -Property *
心得：
其实有个类似功能的图形工具比这段代码更方便更直观，它叫ScriptomaticV2。
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